Journal articles: 'Machine'

1

M. Brandao, Iago, and Cesar da Costa. "FAULT DIAGNOSIS OF ROTARY MACHINES USING MACHINE LEARNING." Eletrônica de Potência 27, no. 03 (September 22, 2022): 1–8. http://dx.doi.org/10.18618/rep.2022.3.0013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Sabeti, Behnam, Hossein Abedi Firouzjaee, Reza Fahmi, Saeid Safavi, Wenwu Wang, and Mark D. Plumbley. "Credit Risk Rating Using State Machines and Machine Learning." International Journal of Trade, Economics and Finance 11, no. 6 (December 2020): 163–68. http://dx.doi.org/10.18178/ijtef.2020.11.6.683.

Full text

Abstract:

Credit risk is the possibility of a loss resulting from a borrower’s failure to repay a loan or meet contractual obligations. With the growing number of customers and expansion of businesses, it’s not possible or at least feasible for banks to assess each customer individually in order to minimize this risk. Machine learning can leverage available user data to model a behavior and automatically estimate a credit score for each customer. In this research, we propose a novel approach based on state machines to model this problem into a classical supervised machine learning task. The proposed state machine is used to convert historical user data to a credit score which generates a data-set for training supervised models. We have explored several classification models in our experiments and illustrated the effectiveness of our modeling approach.

APA, Harvard, Vancouver, ISO, and other styles

3

Nekhaev, Andrey. "Machine Wars: Machina Humeana." Sotsiologicheskoe Obozrenie / Russian Sociological Review 14, no. 3 (2015): 9–47. http://dx.doi.org/10.17323/1728-192x-2015-3-9-47.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Fischer, Peer. "A machine from machines." Nature Physics 14, no. 11 (July 23, 2018): 1072–73. http://dx.doi.org/10.1038/s41567-018-0247-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Caye, Pierre. "La machine des machines." Le Visiteur N° 27, no. 1 (March 1, 2022): 19–24. http://dx.doi.org/10.3917/visit.027.0020.

Full text

Abstract:

La ville est la grande affaire de notre temps. Depuis 2008, plus de la moitié de la population mondiale vit en ville. Et nous serons probablement près de 60 % en 2030. L’attraction démographique de la ville est renforcée par son dynamisme économique. Elle est devenue le lieu central de la production et de l’innovation, le cœur du système productif et de son organisation économique. La ville contemporaine apparaît d’abord comme un mégasystème technique, le système des systèmes, l’infrastructure qui rassemble à la fois les superstructures et les autres infrastructures ou, mieux encore, la machine des machines qui interconnecte les différents réseaux structurant la vie urbaine. Mais la machine des machines n’est pas un moyen de production comme un autre, du même ordre que les machines qu’elle coordonne. La ville donne un autre sens à la notion de machine, et c’est pourquoi elle est appelée à jouer un rôle fondamental dans la transformation productive, à partir du moment du moins où est prise en compte la spécificité de sa conception et de son intelligence.

APA, Harvard, Vancouver, ISO, and other styles

6

Levi, Federico. "A machine to help machines." Nature Physics 15, no. 12 (December 2019): 1210. http://dx.doi.org/10.1038/s41567-019-0753-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Trott, David. "Deceiving Machines: Sabotaging Machine Learning." CHANCE 33, no. 2 (April 2, 2020): 20–24. http://dx.doi.org/10.1080/09332480.2020.1754067.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Engster, Frank. "Measure, machine, money." Capital & Class 44, no. 2 (February 17, 2020): 261–72. http://dx.doi.org/10.1177/0309816820904030.

Full text

Abstract:

The aim of the text is to clarify why machines are economically productive only in capitalism and therefore in our society are capitalistic machines. They are capitalist not only because they increase the productive power of the capitalist valorisation, but this valorisation first of all is producing these machines, or at least it produces their productivity and hence ‘the machinic’ of machines. To understand this production of the machinic, we must understand them, as, for example, Heidegger, Simondon or Deleuze and Guattari have shown, from their context: from their non-technical essence, from their connection with other machines and from the social essence of the machinic. But in this context, first of all and in the last instance, we have to understand with Marx their entanglement with the capitalist valorisation. This can be shown for three different types of machines: the physical machine, the calculation machine and the social machine: money. What all three have in common and almost defines them as machines is that all three naturalise relations by quantifying them. The classical physical machine quantifies the relation of nature, the calculation machine quantifies information and meaning, and the money machine quantifies the relations of our society. I will concentrate on the physical and the money machine only. The technique to quantify is for both the same: measurement. This quantification and naturalisation by measurement is why both are – although or especially because they are opposed types of machines – interfaces to the capitalist valorisation process, and in this functioning as interfaces, we have to search their non-technical essence.

APA, Harvard, Vancouver, ISO, and other styles

9

Sayapin, S. N., O. O. Bryyndina, and P. G. Vanina. "New Approach to Three-Coordinate Milling of Large-Sized Surfaces of Second Order." Proceedings of Higher Educational Institutions. Маchine Building, no. 12 (741) (December 2021): 19–28. http://dx.doi.org/10.18698/0536-1044-2021-12-19-28.

Full text

Abstract:

The study introduces a new approach to precision machining of large-sized surfaces of second order on a three-coordinate horizontal milling machine. The new technology does not require the use of unique large-size boring lathes or five-axis milling machines. Three-axis horizontal milling machines do not need to be equipped with additional equipment that provides the workpiece with the missing rotational and translational movements relative to the machine table. The proposed technology is based on the use of a new approach that combines the geometric parameters of the second-order machined surface, the spherical surface of the cutting tool, i.e. cutter, and their position relative to the working table. The use of the developed technology will improve the efficiency and accuracy of machining the surface of second order, as well as simplify the control program and technological support due to the absence of movable equipment. The study gives an example of practical implementation and shows the possibility of independent control of the machined parabolic surface geometry using a three-coordinate horizontal milling machine.

APA, Harvard, Vancouver, ISO, and other styles

10

Phimpisan, Phaireepinas, and Chatchapol Chungchoo. "A Best Practice Guideline for Inspecting Precision Machined Parts by Using Several Coordinate Measuring Machines (CMMs)." Applied Mechanics and Materials 894 (September 2019): 90–95. http://dx.doi.org/10.4028/www.scientific.net/amm.894.90.

Full text

Abstract:

Currently in Thailand, original equipment manufacturers (OEM) who produce precision-machined parts face a serious problem about product rejection from customers. This is because measuring results from the OEM supplier differ from the measuring results from the OEM buyer. Normally, for precision-machined parts, OEM suppliers and OEM buyers use CMM machines as an inspection tool. One major cause of the difference in measurements is that suppliers and buyers use different CMM machine, operators and measuring methods. In order to mitigate the difference in measurements, the standard guideline for measuring precision-machined parts by CMM machines needs to be improved. In this research, the guideline was developed by studying the best practices of five successful companies, who could minimize rejection due to the differences in the CMM machine operators and measuring methods. Validation results indicated that when manufacturers who had precision problems used this guideline, the product rejection could decreased significantly.

APA, Harvard, Vancouver, ISO, and other styles

11

Kristinawati, Eti. "PERANCANGAN TATA LETAK MESIN DENGAN MENGGUNAKAN KONSEP GROUP TECHNOLOGY SEBAGAI UPAYA MINIMASI JARAK DAN BIAYA MATERIAL HANDLING." Jurnal Teknik Industri 1, no. 1 (April 29, 2010): 71. http://dx.doi.org/10.22219/jtiumm.vol1.no1.71-79.

Full text

Abstract:

PT. BerlinaT bk Pandaanis a companyth at producea lreadyu sep lasticp roductp ackage.Some of its product are Nivea bottle, Lux shower bottle, packaging of sheats and the other formvariation.T he processintgo makei t, needa t leastt wice a processo f machineA. 11t hosep roductthroughs omeo perationw hich happeneda long way materialh andlingf rom one machinet oanother.A s main productf acility is throught he the machinel ayout can be seent hat machineplacement still arbitrarily, and it will cause product current longer so that cost and distance formateriahi andlinga lsob igger.To solvet his problem,w e havet o studya theoryg roup technologyM. ajor point f thistheory is machine grouping become machine cell also product grouping become part family sothat, later, each machine cell will produce a certain of part family according certain criteria. Withthe computepr rogam calledg tlaypc.exep,a rt family andm achinec ell canb e know andu sei 1f orplanninga machinela yout.The resulto f machinela youtp lanningu singg roupt echnologyis total distance2 7853,5mper day and 18978m per day smallerl rom the earliere xitingm achinela yout so that the costo fmaterialh andlingp lan Rp. 35109,3p er day more smaller.P lanningt he machinela youtw ith thegroupt echnologyc anm inimalizeo fcost andd istancem ateriahl andling

APA, Harvard, Vancouver, ISO, and other styles

12

Soylu, Ufuk, and Michael L. Oelze. "Machine-to-machine transfer function: Transferring deep learning models between ultrasound machines." Journal of the Acoustical Society of America 153, no. 3_supplement (March 1, 2023): A350. http://dx.doi.org/10.1121/10.0019120.

Full text

Abstract:

In our previous work, we proposed a calibration method for deep learning (DL) to mitigate the effects of acquisition-related data mismatches in the context of tissue characterization. We showed that the “setting” transfer function can transfer deep learning models between imaging settings. We now extend the calibration method to transfer deep learning models between ultrasound machines. This can lead to reduced cost of model development and also improved understanding of the issues related to the security of deep learning based algorithms in biomedical ultrasound imaging. We gathered four datasets from three different scanners: (i) a SonixOne Machine with an L9-4 transducer, (ii) a Verasonics Vantage 128 Ultrasound Machine with an L9-4 transducer using line by line acquisition, (iii) a Verasonics Vantage 128 Ultrasound Machine with an L9-4 transducer using plane wave compounding, and (iv) a Siemens Antares Ultrasound Machine with an VF10-5 transducer. We used the first dataset as training data and the other datasets as testing data. The DL algorithm learned how to classify two tissue mimicking phantoms. The classification accuracy jumped to 90% from 50% for the second dataset, 70% from 50% for the third dataset, and 61% from 56% for the fourth dataset after incorporating the calibration method. Therefore, the results confirm that a transfer function approach can be used to transfer learning models between scanners for the purpose of classifying materials based on ultrasonic backscatter.

APA, Harvard, Vancouver, ISO, and other styles

13

Tsuji, Hidekazu, Jun Sawamoto, Katsuhiko Seo, and Shinji Kitagami. "M2M (Machine-to-Machine) Technology Trend." IEEJ Transactions on Electronics, Information and Systems 133, no. 3 (2013): 520–31. http://dx.doi.org/10.1541/ieejeiss.133.520.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Walker, Yolanda. "Machine Functionalism: Brains as Computing Machines." International Journal of Undergraduate Research and Creative Activities 4, no. 1 (June 19, 2013): 5. http://dx.doi.org/10.7710/2155-4838.1073.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Magné, Bernard. "Machines à écrire, machine à lire." Études françaises 36, no. 2 (February 11, 2008): 119–28. http://dx.doi.org/10.7202/005258ar.

Full text

Abstract:

Résumé Cet article décrit la structure et le fonctionnement du CD-ROM Machines à écrire, réalisé par Antoine Denize et Bernard Magné. Mettant en scène (en écran) deux textes combinatoires de Raymond Queneau (« Un conte à votre façon », « Cent mille milliards de poèmes ») et un de Georges Perec (« Deux cent quarante-trois cartes postales ») et permettant l'exploration de la littérature combinatoire des grands rhétoriqueurs à nos jours, Machines à écrire offre à la fois un nouveau mode d'approche des textes et l'occasion de réhabiliter une littérature trop souvent ignorée ou méprisée.

APA, Harvard, Vancouver, ISO, and other styles

16

Naeini, Ehsan Zabihi, and Kenton Prindle. "Machine learning and learning from machines." Leading Edge 37, no. 12 (December 2018): 886–93. http://dx.doi.org/10.1190/tle37120886.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Hwang, H. C., and S. Y. Chang. "Parallel machines scheduling with machine shutdowns." Computers & Mathematics with Applications 36, no. 3 (August 1998): 21–31. http://dx.doi.org/10.1016/s0898-1221(98)00126-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Jiang, Yiwei, Zhiyi Tan, and Yong He. "Preemptive Machine Covering on Parallel Machines." Journal of Combinatorial Optimization 10, no. 4 (December 2005): 345–63. http://dx.doi.org/10.1007/s10878-005-4923-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Prepin, Ken, and Arnaud Revel. "Human–machine interaction as a model of machine–machine interaction: how to make machines interact as humans do." Advanced Robotics 21, no. 15 (January 2007): 1709–23. http://dx.doi.org/10.1163/156855307782506192.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Van Thuy, Tran, and Huu Loc Nguyen. "Investigation on influence of cutting parameters on spindle vibration of CNC wood milling machine." MATEC Web of Conferences 213 (2018): 01007. http://dx.doi.org/10.1051/matecconf/201821301007.

Full text

Abstract:

In machining operation, the cutting parameters greatly influences on the spindle vibration of a CNC wood milling machine. The paper presents the effect of the cutting parameters such as feed rate, cutting speed, and cutting depth on the vibration amplitude of the spindle when machined on CNC milling machine using Box-Hunter method of experimentation. The lowest natural frequency of this machine is 250 Hz. Experimental results have established a second-order regression equation that demonstrates the effect of three parameters such as feed rate, cutting speed, and cutting depth on the vibration amplitude of the spindle. From that base, determine the most reasonable cutting parameters when machining on CNC wood milling machines so that the spindle vibration amplitudes is minimal. In addition, The comparison results show that the spindle head vibration amplitude of the machine using the bolt joint is larger than the spindle head vibration amplitude of the machine using the weld joint.

APA, Harvard, Vancouver, ISO, and other styles

21

Mahendra, Surya, and Akhmad Ahfas. "Polar Machine Maintenance." Procedia of Engineering and Life Science 7 (March 14, 2024): 432–37. http://dx.doi.org/10.21070/pels.v7i0.1498.

Full text

Abstract:

Polar Mohr machines are a well-known brand in the printing industry known for its quality paper cutting machines and printing materials. The method used is descriptive research method focused on the problem. The discussion of the polar mohr machine is starting from the position button, length button, reverse button, forward button, reset button and start button. The results of the mohr polar machine are from the polar machine planning to PLC assembly and installation. The conclusion of the polar machine is very helpful for smooth running in the industrial world because it simplifies the process of cutting paper. One of the characteristics of the Polar Mohr machine is its ability to make the cuts we want.Keywords – polar mohr; paper machine panels; panel wiring

APA, Harvard, Vancouver, ISO, and other styles

22

Elvira, Carlos, Mario Terol-Sanchis, María José Gomis-Gomis, and Concepción Suárez-Llorca. "New Deconstruct Elliptical sports machine and Elliptical machine." Scientific Journal of Sport and Performance 2, no. 2 (March 22, 2023): 186–97. http://dx.doi.org/10.55860/zwdl2353.

Full text

Abstract:

The objective of this article was to compare different cardiovascular training machines and their effects on the body, as well as to determine their suitability for people with low intensity or high intensity training needs. A total of 8 physically active and healthy male subjects (mean ± standard deviation; age: 28.45 ± 1.75 years; height: 1.84 ± 0.07 m; body weight 76.42 ± 8.62 kg; body mass index: 25.5 ± 2.6) were evaluated through of an incremental exercise test at different intensities on two different machines: Elliptical Domyos 680 (BED) and Deconstruct Elliptical 331-EF (DEC). To compare both machines against the two mentioned training needs, two different protocols were carried out: Low Intensity Protocol (LIP) and High Intensity Protocol (HIP). In addition, a thermographic analysis was carried out in order to determine the temperature differences reached in the musculature. No significant differences were found in HR and EE (p < .05) between the two machines. However, a greater and more progressive activation of the muscles of the upper extremities was observed in the DEC machine. In the HIP, HR and EE were measured, obtaining significant differences (p < .05) higher in the DEC machine. Therefore, in our comparison, the Deconstruct Elliptical machine produced more appropriate results for both low and high intensity training compared to the Elliptical machine. These results and the novel nature of the Deconstruct Elliptical raise the need for further studies to better understand this machine.

APA, Harvard, Vancouver, ISO, and other styles

23

Reddy, G. Mahendra. "OPC UA DRIVEN AUTONOMOU DECISION MAKING IN INDUSTRIAL IOT." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 03 (March 18, 2024): 1–5. http://dx.doi.org/10.55041/ijsrem29287.

Full text

Abstract:

The creation of autonomous and intelligent devices for manufacturing firms has been made possible by the Industrial Internet of Things and the progress made in machine-to-machine communication. These autonomous machines are able to collect data from various sensing devices and other related machine systems by using communication protocols such as OPC UA. Here we perform machine to machine communication through an Arduino microcontroller. Any board or computer with a full-size USB A host connector can be connected to the Arduino with the help of a USB-A to USB-B cable. The communication takes place over the serial port (USART/UART). Machines can currently send and receive enough data to enable independent decision-making. Existing low-level machine-to-machine communication only involves data processing, and higher-level decision-making processes are limited to a single machine system rather than communications amongst networked machines. The goal of this effort is to employ OPC UA protocols to improve these limitations in machine-to-machine communication. This could mean deciding how to respond to receiving information and directing both horizontally (same level machines) and vertically (higher level machines) connected equipment. Proactive machine-to-machine communication improves factory intelligence in this way. Keywords: M2M,OPC UA,IIOT

APA, Harvard, Vancouver, ISO, and other styles

24

Martin, Karen J. "Machine Safety." AAOHN Journal 40, no. 6 (June 1992): 279–83. http://dx.doi.org/10.1177/216507999204000603.

Full text

Abstract:

Machine operators are at increased risk for certain machine injuries, including amputation. OSHA provides standards of safety for machine guarding during operation and machine lockout during maintenance. The role of the occupational health nurse in machine safety is to conduct worksite analyses to identify proper safeguarding and to communicate deficiencies to appropriate personnel; to train workers in safe work practices and observe compliance in the use of machine guards; to provide care for workers injured by machines, especially in managing amputations; and to reinforce safe work practices among machine operators.

APA, Harvard, Vancouver, ISO, and other styles

25

Morimoto, Yoshitaka, Keisuke Nakato, and Motoshi Gontani. "Accuracy Evaluation of 5-Axis Machining Center Based on Measurements of Machined Workpiece – Evaluation of Accuracy of 5-Axis Controlled Machining Center –." International Journal of Automation Technology 6, no. 5 (September 5, 2012): 675–81. http://dx.doi.org/10.20965/ijat.2012.p0675.

Full text

Abstract:

A new method for evaluating the geometrical accuracy of a 5-axis Machining Center (MC) based on the measurement results of the machined workpiece has been developed. The strategy behind our method is to utilize, because of its accuracy, a Coordinates Measuring Machine (CMM) as a master gauge. Thus, the machine operator machines the workpiece and a technologist of precise measurement takes the measurements. In our study, non-rotational machining is utilized to copy and trace the machine trajectory on the workpiece, minimizing the machining error. The profiles of the machined workpiece are measured and evaluated by a CMM, and the geometric errors of the machining center are extracted. Themeasurement results are sufficiently accurate compared to those taken using the square master gauge calibrated by CMM previously. In this report, the machining setup, including workpiece design, tool design, and cutting conditions, is proposed, and the experimental procedures and results of the evaluation are given.

APA, Harvard, Vancouver, ISO, and other styles

26

McKee, Keith E. "Machine tool technology: an extended view." Robotica 5, no. 2 (April 1987): 167–72. http://dx.doi.org/10.1017/s0263574700015344.

Full text

Abstract:

SUMMARYMany of the evolving technologies related to machining will expand the traditional concept of the machine tool industry. Preprocessing of materials into net or near-net shapes will reduce or even eliminate the need for machining operations. Conversion of particles into parts is one generic approach which, when automated, could be integrated into a machining center. Similarly diecasting or squeeze casting could become an integrated part of the machining center for volume production. The machine tool industry could automate die manufacturing so that dies could be made in real time and could justify net shape production for small quantities and rush jobs.Much and often most of the time and costs within a “machining” operation are generated by secondary operations such as heat treating, plating, and welding–operations done in different parts of or even at different plants. The concept of extending the machining center to include these secondary operations has been considered for several years and to a limited extent, has occurred. Laser extended machining centers provide one possibility for integrating several of the secondary operations with machines at a single site.Post processing of machined parts at the site of the machining center can result in parts oriented and appropriately presented or packaged for subsequent operations. When several machined parts subsequently become an assembly or subassembly, the concept of machining could be extended to include the assembly.When machining is considered in this broader context, the technology futures of the machine tool industry are considerably broadened. Smarter machine tools, improved support structures, and high speed machining are important, but competitors are looking at the same opportunities and the competitive advantage is likely to be limited. “Leap frog” improvement depends on some of the less conventional technologies considered in this paper. Broadening of the machine tool horizons is likely to offer the technology path for revitalization and growth of the machine tool industry.

APA, Harvard, Vancouver, ISO, and other styles

27

Woody, Bethany A., K. Scott Smith, Robert J. Hocken, and Jimmie A. Miller. "A Technique for Enhancing Machine Tool Accuracy by Transferring the Metrology Reference From the Machine Tool to the Workpiece." Journal of Manufacturing Science and Engineering 129, no. 3 (October 9, 2006): 636–43. http://dx.doi.org/10.1115/1.2716718.

Full text

Abstract:

High-speed machining (HSM) has had a large impact on the design and fabrication of aerospace parts and HSM techniques have been used to improve the quality of conventionally machined parts as well. Initially, the trend toward HSM of monolithic parts was focused on small parts, where existing machine tools have sufficient precision to machine the required features. But, as the technology continues to progress, the scale of monolithic parts has continued to grow. However, the growth of such parts has become limited by the inability of existing machines to achieve the tolerances required for assembly due to the long-range accuracy and the thermal environment of most machine tools. Increasing part size without decreasing the tolerances using existing technology requires very large and very accurate machines in a tightly controlled thermal environment. As a result, new techniques are needed to precisely and accurately manufacture large scale monolithic components. Previous work has established the fiducial calibration system (FCS), a technique, which, for the first time provides a method that allows for the accuracy of a coordinate measuring machine (CMM) to be transferred to the shop floor. This paper addresses the range of applicability of the FCS, and provides a method to answer two fundamental questions. First, given a set of machines and fiducials, how much improvement in precision of the finished part can be expected? And second, given a desired precision of the finished part, what machines and fiducials are required? The achievable improvement in precision using the FCS depends on a number of factors including, but not limited to: the type of fiducial, the probing system on the machine and CMM, the time required to make a measurement, and the frequency of measurement. In this paper, the sensitivity of the method to such items is evaluated through an uncertainty analysis, and examples are given indicating how this analysis can be used in a variety of cases.

APA, Harvard, Vancouver, ISO, and other styles

28

Hussein Mohammed Al-Almoodi, Hamzah, Norsinnira Zainul Azlan, Ifrah Shahdad, and Norhaslinda Kamarudzaman. "Continuous Passive Motion Machine for Elbow Rehabilitation." International Journal of Robotics and Control Systems 1, no. 3 (October 22, 2021): 402–15. http://dx.doi.org/10.31763/ijrcs.v1i3.446.

Full text

Abstract:

Continuous Passive Machines (CPM) facilitate patients in eliminating joint stiffness after surgery and lead to a faster and more efficient recovery. However, many previous CPM machined are mechanically complicated, expensive, and lack a user interface. This paper presents a new CPM machine for elbow flexion-extension and forearm pronation-supination. The machine is simple, low-cost, and equipped with Graphical User Interface (GUI). Its mechanism is designed so that it can be used on the left or right arms interchangeably. It is developed using aluminum, perspex, and steel rods. The electrical part of the machine consists of Arduino Uno to drive the motors and a potentiometer to measure the patients’ Range of Motion (ROM). The GUI for setting the exercise parameters and monitoring the patients’ progress has been developed using MATLAB software. The experimental results show that the machine has successfully provided the repetitive desired motions. The machine realizes elbow flexion-extension and forearm pronation-supination movements with 0ᵒ-135ᵒ and 0ᵒ-90ᵒ ranges of motion (ROM), respectively. The machine is also capable of increasing the elbow joint’s ROM by 5ᵒ increments for the therapy. The results show that the machine has the potential to be used in hospitals and rehabilitation centers.

APA, Harvard, Vancouver, ISO, and other styles

29

Barylski, Adam, and Mariusz Deja. "Finishing of Ceramics in a Single-Disk Lapping Machine Configuration." Solid State Phenomena 165 (June 2010): 237–43. http://dx.doi.org/10.4028/www.scientific.net/ssp.165.237.

Full text

Abstract:

Lapping of plane surfaces is the technology which allows achieving high surface quality. Kinematics of lapping has the main effect on the flatness of active plane of the lapping tools as well as on the quality and flatness of the machined surface. Lapping machines can be used for grinding without the chuck-related problems as encountered in conventional surface grinding. The configuration of a conventional single-disk lapping machine was modified and the rotational velocity of a workpiece holder can be precisely controlled by a stepper motor. Two types of tools were used for experiments on a modified machine. The first tool was equipped with grinding inserts made of resin and synthetic diamond micrograins (grit size 3/2 m). In the second stage of experiments the single-layer electroplated diamond tool (D107 – grit size 106/90 m) was applied. Ceramic workpieces (Al2O3) were machined on the modified single-disc lapping machine with the use of both tools and with additional loose abrasive. Experimental results of removal rates, technological parameters and kinematical analysis are the subject of the presented paper.

APA, Harvard, Vancouver, ISO, and other styles

30

Nikhil Yadav, Golla. "Lightweight Machine - To - Machine Communication Solution on Android Platform." International Journal of Science and Research (IJSR) 12, no. 6 (June 5, 2023): 2846–49. http://dx.doi.org/10.21275/sr23628110656.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Huang, Kwei-Long, Jakey Blue, Hao-Chen Weng, and Shu-Han Liu. "Single machine scheduling with consideration of preventive maintenance and machine health." MATEC Web of Conferences 192 (2018): 01009. http://dx.doi.org/10.1051/matecconf/201819201009.

Full text

Abstract:

Because of Industry 4.0 and Internet of Things, it is easier to collect data from machines through sensors that are embedded inside machines. Once the status change of a machine is detected, production on that machine may need to be adjusted accordingly. In this research, we focus on single machine scheduling with considering the Preventive Maintenance (PM) and machine health index. Machine health index is categorized into three states: good, fair, and breakdown. When the machine moves from one state to another, the processing time of jobs will change as well as the machine failure rate. We develop a model to determine an optimal interval of performing PM and production sequence of jobs. A two-phase heuristic method is proposed to solve a large-size problem. Through different parameter settings, such as the machine failure rate, number of jobs, repair and maintenance cost, we show that the two-phase heuristic can obtain a solution with high quality.

APA, Harvard, Vancouver, ISO, and other styles

32

ROBINSON, RAPHAEL M. "MINSKY'S SMALL UNIVERSAL TURING MACHINE." International Journal of Mathematics 02, no. 05 (October 1991): 551–62. http://dx.doi.org/10.1142/s0129167x91000302.

Full text

Abstract:

Marvin L. Minsky constructed a 4-symbol 7-state universal Turing machine in 1962. It was first announced in a postscript to [2] and is also described in [3, Sec. 14.8]. This paper contains everything that is needed for an understanding of his machine, including a complete description of its operation. Minsky's machine remains one of the minimal known universal Turing machines. That is, there is no known such machine which decreases one parameter without increasing the other. However, Rogozhin [6], [7] has constructed seven universal machines with the following parameters: [Formula: see text] His 4-symbol 7-state machine is somewhat different from Minsky's, but all of his machines use a construction similar to that used by Minsky. The following corrections should be noted: First machine, for q 6 00Lq 1 read q 6 00Lq 7; second machine, for q 4 11Rq 4 read q 4 11Rq 10; last machine, for q 2 b 2 bLq 2 read [Formula: see text]. A generalized Turing machine with 4 symbols and 7 states, closely related to Minsky's, was constructed and used in [5].

APA, Harvard, Vancouver, ISO, and other styles

33

Álvarez, Álvaro, Amaia Calleja, Mikel Arizmendi, Haizea González, and Luis Lopez de Lacalle. "Spiral Bevel Gears Face Roughness Prediction Produced by CNC End Milling Centers." Materials 11, no. 8 (July 27, 2018): 1301. http://dx.doi.org/10.3390/ma11081301.

Full text

Abstract:

The emergence of multitasking machines in the machine tool sector presents new opportunities for the machining of large size gears and short production series in these machines. However, the possibility of using standard tools in conventional machines for gears machining represents a technological challenge from the point of view of workpiece quality. Machining conditions in order to achieve both dimensional and surface quality requirements need to be determined. With these considerations in mind, computer numerical control (CNC) methods to provide useful tools for gear processing are studied. Thus, a model for the prediction of surface roughness obtained on the teeth surface of a machined spiral bevel gear in a multiprocess machine is presented. Machining strategies and optimal machining parameters were studied, and the roughness model is validated for 3 + 2 axes and 5 continuous axes machining strategies.

APA, Harvard, Vancouver, ISO, and other styles

34

Et. al., Mathew Chacko,. "Cyber-Physical Quality Systems in Manufacturing." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (April 11, 2021): 2006–18. http://dx.doi.org/10.17762/turcomat.v12i2.1805.

Full text

Abstract:

Digital Twin-based Cyber-Physical Quality System (DT-CPQS) concept involves automated quality checking, simulation, and prediction of manufacturing operations to improve production efficiency and flexibility as part of Industrie4.0 initiatives. DT-CPQS will provide the basis for the manufacturing process to march towards an autonomous quality platform for zero defect manufacturing in the future. Analysing sensor data from the CNC machine and vision monitoring system it was concluded that there was enough signal data to detect quality issues in a part being machined in advance using statistical/mathematical models (Smart PLS) and using machine learning algorithms. This allows the operator to take corrective actions before the resultant part ends in a quality failure and reduces the inspection time. The proposed approach forms the basis in expanding this concept to a large machine shop wherein by monitoring various parameters of the machines and state variables of the tools we can detect quality issues and develop an automated quality system using machine learning techniques.

APA, Harvard, Vancouver, ISO, and other styles

35

Yasar, Sekip Sadiye, Osman Komut, Mehmet Yasar, and Muhammed Said Fidan. "Noise as a physical risk factor in furniture industry machines." BioResources 19, no. 2 (February 5, 2024): 2017–28. http://dx.doi.org/10.15376/biores.19.2.2017-2028.

Full text

Abstract:

This study aimed to determine the risk level of noise, which is an important physical risk, in small and medium-sized furniture industry enterprises. The noise levels of the circular sawing machines, edge banding machines, and mitre cutting machines, which are among the main processing machines of the sector, were measured. The study was carried out in 32 furniture businesses. The possible risks of noise on the operators of the machines in question and other employees were evaluated. Noise level measurements were made with the help of TESTO 815 measuring device. Dunnett’s T3 test was used to detect differences in noise levels for machine operators and other employees. It was determined that the edge banding machine does not pose an occupational health and safety risk in terms of noise risk factors. However, the mitre cutting machine and the circular sawing machine pose a risk for the machine operator in active production by creating noise above the established exposure limit value. The mitre cutting machine carries the same risk for the machine operator when it is in operation but in passive production. The results revealed the need for personal protective equipment for machine operators for mitre cutting and circular sawing machine.

APA, Harvard, Vancouver, ISO, and other styles

36

Wang, Zhong Ren, and Yan Hua Wu. "On-Machine Illumination Technique in Industry Machine Vision." Advanced Materials Research 201-203 (February 2011): 1582–85. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.1582.

Full text

Abstract:

On-machine illumination is a key technology in industry machine vision. In this paper, two on-machine illuminant schemes were introduced. Firstly, for vision measurement of large-scale workpiece, an adjustable LED lighting source was established on the worktable of NC milling machine. High-quality image sequence was acquired to guarantee the effect of image mosaicing. Secondly, for texture classification of machined surface, a kind of dome LED illuminant was set up on the lathe. Experiment results show that red light is appropriate selection for on-machine illumination. Moreover, the size and the shape of illuminant should suit for the situation of the machine tool and workpiece.

APA, Harvard, Vancouver, ISO, and other styles

37

ShangGuan, Chun Xia, Jun Tao Li, and Rui Feng Shi. "Rescheduling of Parallel Machines under Machine Failures." Advanced Materials Research 443-444 (January 2012): 724–30. http://dx.doi.org/10.4028/www.scientific.net/amr.443-444.724.

Full text

Abstract:

In this study, we address a rescheduling problem in parallel machine environments under machines failures. To make a balance between efficiency and stability of the reschedules, we consider the total number of tardy jobs as efficiency measure and the number of jobs processed on different machines in the initial and revised schedules as a stability measure. Then a heuristic algorithm which synthesizes beam search (BS) and repair-based constraint satisfaction algorithm is developed. Numerical experiments are processed to evaluate the performance and efficiency of the proposed algorithm. The experimental results show that the proposed algorithm improves the results significantly.

APA, Harvard, Vancouver, ISO, and other styles

38

Gupta, Manoj, and Shivakumar Raman. "Machine vision assisted characterization of machined surfaces." International Journal of Production Research 39, no. 4 (January 2001): 759–84. http://dx.doi.org/10.1080/00207540010011045.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Chuang, Ming-Chou, Ching-Jong Liao, and Chien-Wen Chao. "Parallel machine scheduling with preference of machines." International Journal of Production Research 48, no. 14 (June 12, 2009): 4139–52. http://dx.doi.org/10.1080/00207540902991674.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Matsuda, Michiko, and Fumihiko Kimura. "Configuration of the Digital Eco-Factory for Green Production." International Journal of Automation Technology 6, no. 3 (May 5, 2012): 289–95. http://dx.doi.org/10.20965/ijat.2012.p0289.

Full text

Abstract:

This paper proposes a construction method for the digital eco-factory to support promotion and implementation of green production. The digital eco-factory is configured on the digital factory. The digital factory is constructed by applying multi agent technology. In the digital factory, all factory elements such as machine tools and assembly machines are configured as software agents. The digital factory mirrors the structure of the actual factory. The shop floor is modeled as a virtual shop floor by machine agents. In addition to machine agents, machined workpieces and assembled parts are also configured as software agents. The workpiece agent selects machines to complete itself as a part. The part agent also leads the assembly processes for making the complete product. The operator can set up the initial shop floor configuration through the user interface. The operator also controls the production scenario by means of inputting a production order with candidate production plans. When constructing the digital eco-factory using this digital factory, the calculation function for indices of environmental burdens such as CO2 and energy consumption are installed in each machine agent. The workpiece/part agent monitors them. The proposed configuration is applied to the printed board production line for verification of the proposal.

APA, Harvard, Vancouver, ISO, and other styles

41

Munadi, M., Aulia Syukri, Joga Dharma Setiawan, and Mochammad Ariyanto. "Rancang-bangun prototipe mesin CNC laser engraving dua sumbu menggunakan diode laser." Jurnal Teknik Mesin Indonesia 13, no. 1 (April 8, 2018): 32. http://dx.doi.org/10.36289/jtmi.v13i1.88.

Full text

Abstract:

The development of industrial technology can help the manufacturing industry for producing quality products. One tool that can help produce such quality products is CNC machines. As we know that the price of CNC machines is not cheap. Therefore, in this article, the researchers suggest how to design a prototype CNC laser engraving machine for the acrylic workpiece. The machine is designed as cheaply as possible but provide great benefits. The machine frame is designed using aluminum extrusion, the laser uses a laser diode type, the actuators of axis uses the stepper motor, and the control software uses a USB CNC controller. The dimension of workpiece that can be machined is 600 mm x 300 mm x 2 mm. The optimization of the stepper motor movement system is chosen 1/8 micro stepping after testing full-step method, half-step, 1/8 micro stepping, and 1/16 micro stepping. Using a 2.5 watt diode laser module, the radiant heat received by the acrylic workpiece during the engraving process is 558.8 x 10-5 cal/sec.

APA, Harvard, Vancouver, ISO, and other styles

42

Sellam, Abdelkrim, Boubakeur Dehiba, Mohamed B. Benabdallah, Mohamed Abid, Nacéra Bachir Bouiadjra, Boubakeur Bensaid, and Mustapha Djouhri. "Vectorial Formalism of Polyphase Synchronous Machine With Permanents Magnets." Aceh International Journal of Science and Technology 2, no. 1 (April 1, 2013): 1–7. http://dx.doi.org/10.13170/aijst.2.1.482.

Full text

Abstract:

Abstract- This paper presents a mathematical model that transforms the real machine to fictitious machines and our goal is to simulate these and see the behavior of these machines in load. The polyphase machines are developed mainly in the field of variable speed drives of high power because increasing the number of phases on the one hand allows to reduce the dimensions of the components in power modulators energy and secondly to improve the operating safety. By a vector approach (vector space), it is possible to find a set of single-phase machine and / or two-phase fictitious equivalent to polyphase synchronous machine. These fictitious machines are coupled electrically and mechanically but decoupled magnetically. This approach leads to introduce the concept of the equivalent machine (multimachine multiconverter system MMS) which aims to analyze systems composed of multiple machines (or multiple converters) in electric drives. A first classification multimachine multiconverter system follows naturally from MMS formalism. We present an example of a pentaphase (polyphase) synchronous machine for a simulation and study the behavior of the machine load. Keywords: Polyphase machines, multimachine concept, vector space, eigenvectors, eigenvalues, pentaphase machine.

APA, Harvard, Vancouver, ISO, and other styles

43

Palka, Ryszard, Kamil Cierzniewski, Marcin Wardach, and Pawel Prajzendanc. "Research on Innovative Hybrid Excited Synchronous Machine." Energies 16, no. 18 (September 13, 2023): 6600. http://dx.doi.org/10.3390/en16186600.

Full text

Abstract:

This paper presents research on an unconventional electric machine. It is a hybrid excited machine which includes the features of three types of machines: the Permanent Magnet Synchronous Machine, the Synchronous Machine, and the Synchronous Reluctance Machine. Therefore, a broad literature review related to the above-mentioned types of machines was constructed. The well-known Permanent Magnet assisted Synchronous Reluctance Machine joins features of Permanent Magnet Synchronous Machine and Synchronous Reluctance Machine topologies. This paper shows the results of the innovative design of the Hybrid Excited Permanent Magnet assisted Synchronous Reluctance Machine, which additionally has advantages of the Synchronous Machine. In the article the basic methods of electromagnetic flux control and the designs using them are also presented. Finally, the results of simulation studies of the effect of the stator skew on the machine performance are described.

APA, Harvard, Vancouver, ISO, and other styles

44

Chiara, Maria Luisa Dalla, Roberto Giuntini, Giuseppe Sergioli, and Roberto Leporini. "Abstract quantum computing machines and quantum computational logics." International Journal of Quantum Information 14, no. 04 (June 2016): 1640019. http://dx.doi.org/10.1142/s0219749916400190.

Full text

Abstract:

Classical and quantum parallelism are deeply different, although it is sometimes claimed that quantum Turing machines are nothing but special examples of classical probabilistic machines. We introduce the concepts of deterministic state machine, classical probabilistic state machine and quantum state machine. On this basis, we discuss the question: To what extent can quantum state machines be simulated by classical probabilistic state machines? Each state machine is devoted to a single task determined by its program. Real computers, however, behave differently, being able to solve different kinds of problems. This capacity can be modeled, in the quantum case, by the mathematical notion of abstract quantum computing machine, whose different programs determine different quantum state machines. The computations of abstract quantum computing machines can be linguistically described by the formulas of a particular form of quantum logic, termed quantum computational logic.

APA, Harvard, Vancouver, ISO, and other styles

45

Deshpande,, Omkar, Sughosh Pande, Anusha Sure, and Sakshi Yelwande. "Smart Vending Machine." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (May 31, 2022): 4477–78. http://dx.doi.org/10.22214/ijraset.2022.43433.

Full text

Abstract:

Abstract: Now-a-days vending machines are becoming very popular in western countries because of their ease, less wastage of time and effort, availability near doorstep and variety of products. But in India, vending machines are still not so popular according to the customer's requirement. In this paper, a model of vending machine is proposed which dispenses liquid products by accepting the coin. The model of vending machine is customer friendly with a feature of fake coin detection. This machine is implemented using AVR ATmega16 microcontroller. Various modules of the machine are interfaced with the microcontroller. Coin recognition through CS-616 coin acceptor and IR sensor makes this model simple and inexpensive as compared to the previous work where either currency or tokens were used or difficult techniques like image recognition for detection of coin. Keywords: Atmega16,IR sensor, CS-616 Coin acceptor

APA, Harvard, Vancouver, ISO, and other styles

46

Wang, Y., Z.-J. Wang, O. Yilmaz, and N. Gindy. "Interactive fixture and tool space design considering tool movement, machine, and inspection for five-axis grinding." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 224, no. 4 (October 26, 2009): 543–52. http://dx.doi.org/10.1243/09544054jem1546.

Full text

Abstract:

This paper proposes a novel method of collision-free fixture and tool space design for five-axis grinding, considering tool movement, machine degrees of freedom, the machine envelope, inspection, and related features. The fixture space is designed in three steps. First, the fixture space is generated as the remaining space after cutting out the tooling space (i.e. the sweeping space of the grinding wheel along the profile of the machined features). In this way, the fixture space is naturally collision-free with respect to tool movement. Second, the fixture space is further modified based on the constraints imposed by the grinding machine centre, which include over-travel distance, the positions of coolant nozzle and wheel dresser, and so on. Third, the fixture space is modified again according to measurements conducted by coordinate measuring machines and in-cycle machine probes. Interactions of fixture space with tool space, machine, and inspection are considered. The fixture space design for holding aerofoil blades on a five-axis machining centre Makino A55 for grinding operations is used as a case study, and the results of this study have been verified by computer-aided manufacture (CAM) simulation software Vericut and physical experiments using dummy wheels.

APA, Harvard, Vancouver, ISO, and other styles

47

Аникеева, Олеся, and Olesya Anikeeva. "METHODOLOGICAL FUNDMENTALS IN PARAMETERS STANDARDIZATION OF MACHINE-TOOLS GEOMETRICAL ACCURACY." Bulletin of Bryansk state technical university 2016, no. 3 (September 30, 2016): 202–9. http://dx.doi.org/10.12737/22098.

Full text

Abstract:

Machinetools belong to the basic technological equipment in mechanical engineering ensuring the creation of other machines with high accuracy and productivity unattainable in coming decades on the basis of additive techniques. Machining accuracy on machinetools is an integral index of quality and despite the diversity of approaches to the identification of correla-tions, computations and estimates of machining accuracy, the value of a general error seems to be as a sum of partial errors. A significant part in the formation of a general error of machining cause machinetools them-selves. Besides, a significant role in assurance of guaranties for machinetools users (operators) the standards for their geometrical accuracy play. A significant problem having scientific and practical meaning is the absence of a single approach substantiated scientifically to the formation of a system of such standards both for machine-tools of new types, and for the revision of the system with actual standards on geometrical accuracy of machinetools. In the paper there are offered methodological fundamentals for the parameters standardization of machine-tools geometrical accuracy on the basis of revealed interrelations between accuracy of units and parts surfaces machined at the use of a variational method for the computation of machines accuracy. The practical use of the approach offered requires both the development of the variational method itself for the computation of machines accuracy in the field of obtaining corresponding estimates of accuracy of various surfaces machined, for example, deviations from parallelism of two faces and others, and thorough investigations of the structure of relationship equations themselves.

APA, Harvard, Vancouver, ISO, and other styles

48

Xu, Junhao. "Study on Shield Machine Technology." Highlights in Science, Engineering and Technology 75 (December 28, 2023): 282–86. http://dx.doi.org/10.54097/vth1qb53.

Full text

Abstract:

The shield machine is a specialized construction equipment used for excavating tunnels, particularly in underground construction projects. The shield machine plays a pivotal role in modern engineering and construction, minimizing surface disruption and environmental impact. Shield machines can adapt to different geological conditions and project requirements, and efficiently excavate tunnels in various ground conditions, reducing construction time and costs. Shield machines improve worker safety by reducing risks associated with manual tunneling, and digging tunnels with high precision, crucial for projects like subways. In essence, shield machines are essential tools in modern tunnel construction, offering efficiency, safety, and precision in building underground infrastructure for various purposes, including transportation, utilities, and more. This paper summarizes the development history of the shield machine and its basic structure, discusses its limitations and challenges, and makes a certain analysis of the application of the shield machine while discussing the innovations and methods of the hydraulic propulsion mechanism of the shield machine. This paper may offer a reference for the development of shield machine.

APA, Harvard, Vancouver, ISO, and other styles

49

Li, Jie, Gongde Yang, and Fei Rao. "Analysis and Design of Novel Axial Field Flux-Modulation Permanent Magnet Machines for Direct Drive Application." Machines 10, no. 7 (June 21, 2022): 495. http://dx.doi.org/10.3390/machines10070495.

Full text

Abstract:

Axial field flux-modulation permanent magnet (AF-FMPM) machines have been developed for direct drive applications such as wind power generation, HEVs, and railway traction. However, the existing studies on AF-FMPM machines are limited to the PM rotor structure, and less research has been carried out on AF-FMPM machines with PM stator structure. This paper studies two axial field flux-modulation permanent magnet (AF-FMPM) machines, i.e., NS or NN type, which all consist of the same stator and rotor structures but the dual identical outer surface-mounted PM stators face each other in different position. A comprehensive theoretical analysis and global optimization of the AF-FMPM machine based on ANSYS Maxwell 3-D FEA is presented. The performance comparisons between the AF-FMPM machine (NS) and AF-FMPM machine (NN) are presented, including the influence of the critical structural dimensions on the machine performance, phase flux linkage, phase back EMF, cogging torque, and average torque performance. The results show that the phase back EMF and average torque of the AF-FMPM machine (NS) are more sinusoidal and higher than that of the AF-FMPM machine (NN). Furthermore, the NS type machine shows the non-saliency characteristics, while the NN type machine is the salient machine.

APA, Harvard, Vancouver, ISO, and other styles

50

Qadri, Muhammad Owais, and Hamidreza Namazi. "Fractal-Based Analysis of the Relation Between Surface Finish and Machine Vibration in Milling Operation." Fluctuation and Noise Letters 19, no. 01 (June 28, 2019): 2050006. http://dx.doi.org/10.1142/s0219477520500066.

Full text

Abstract:

Analysis of surface quality of machined workpiece is an important issue in machining of materials. For this purpose, scientists analyze how the texture of machined surface changes due to different conditions. Machine vibration is one of the factors that highly affects the surface quality of machined surface. In this research, we analyze the relation between machine vibration and surface quality of machined workpiece. For this purpose, we employ fractal theory and analyze how the complex structure of machined surface changes with the complex structure of machine vibration signal in case of variations of machining parameters, namely, depth of cut, feed rate and spindle speed, in milling operation. Based on the results, variations of surface quality of machined workpiece are related with the variations of complexity of machine vibration signal. The method of analysis employed in this research can be applied to other machining operations in order to find the relation between machine vibration and surface quality of machined workpiece.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Machine'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles