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Готові списки джерел за темами / Automatic balancing (self-balancing)

Добірка наукової літератури з теми "Automatic balancing (self-balancing)"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Automatic balancing (self-balancing)"

1

Royzman, Vilen, Algimantas Bubulis, and Ilona Drach. "System Analysis of Automatic Balancing (Self-Balancing) Machine Rotors with Liquid Working Bodies." Solid State Phenomena 147-149 (January 2009): 374–79. http://dx.doi.org/10.4028/www.scientific.net/ssp.147-149.374.

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Анотація:

This article deals with automatic balancing (self-equalizing) of rotors with vertical axis of rotation by means of liquid. There used to be a statement claiming that automatic balancing was possible only after first critical (above resonance) rotation zone of rotors. However in 1995 the phenomenon of automatic balancing with liquid in both below resonance zone of rotor rotation and in the resonance itself was registered using the method of high speed video shooting. The paper suggests theoretical explanation of the phenomenon stated by means of carried out experiments.

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2

Sperling, Lutz, Falk Merten, and Henner Duckstein. "Self-synchronization and Automatic Balancing in Rotor Dynamics." International Journal of Rotating Machinery 6, no. 4 (2000): 275–85. http://dx.doi.org/10.1155/s1023621x00000269.

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Synchronous elimination as one of the possible methods of cancelling any harmful vibration resulting from the unbalance of rotary machines is considered. This method, introduced by Fesca and Thearle, involves the placement of unbalanced elements (e.g. ring, pendulum, ball balancers) on the rotor axis, which can occupy any angular position in relation to the rotor. Under defined conditions in the postcritical frequency range, there is a spontaneous placement of the corection elements such that they balance the rotor unbalance. Hedaya and Sharp generalized this method by combining two force balancers to compensate the unbalanced moment as well as the unbalanced force of a rigid rotor.In the present work this generalization is analysed in detail. The existence and the stability conditions of compensating phasing are developed by the method of direct motion separation, the dependence of these conditions on the polar inertia is investigated, and the validity of Blekhman's principle of self-balancing is discussed.The results are confirmed by computer simulation. Moreover, computer simulation is used to investigate transient motions induced by initial conditions.

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3

Bogdevicius, Marijonas, and Jolanta Janutėnienė. "Influence of Dynamic Viscosity on Automatic Dynamic Balance." Solid State Phenomena 164 (June 2010): 127–32. http://dx.doi.org/10.4028/www.scientific.net/ssp.164.127.

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Анотація:

The paper deals with analysis of dynamic stability and behavior of automatic dynamic balance (ADB) by applying theoretical approach. Differential equations of the considered system were established using Lagrange equation. Numerical analysis of the dynamic equations was performed and influence of dynamic viscosity coefficient on self-balancing process was estimated. It is demonstrated that the balancing time decreases in non-linear character. The optimal value of dynamic viscosity for achieving minimal balancing time can be determined for the analyzed system.

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4

Tsai, Kun-Lin, Yen-Jen Chang, and Yu-Cheng Cheng. "Automatic Charge Balancing Content Addressable Memory With Self-control Mechanism." IEEE Transactions on Circuits and Systems I: Regular Papers 61, no. 10 (October 2014): 2834–41. http://dx.doi.org/10.1109/tcsi.2014.2335651.

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5

DRACH, Ilona, Vilen ROYZMAN, Algimantas BUBULIS, and Kazimieras JUZĖNAS. "Passive Balancing of the Rotor with an Auto-Balancing Device with a Viscous Incompressible Liquid." Mechanics 27, no. 1 (February 24, 2021): 45–51. http://dx.doi.org/10.5755/j02.mech.23789.

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Анотація:

The use of liquid auto-balancers to compensate the operational changes in the imbalance of rotary systems without stopping them is of interest because of the relative structural simplicity of these devices, which are passive direct-acting regulators that do not require power supply and control systems to move correction masses. The experience of the study of passive auto-balancing devices (SBD) indicates that the existing theory (statements) of passive automatic balancing of the fluid is idealized and inaccurately describes the processes that occur with the working bodies during their operation. In particular, the lack of studies on the effect of liquid viscosity on the efficiency of self-balancing and the reasonableness of the selection of liquid during the development of fluid SBD demanded to analyse the operation of liquid SBD in the real system, taking into account the influence of liquid properties on the efficiency of the vertical rotor balancing process. It is shown that the efficiency of balancing increases with the approach of the angular velocity to the critical one and with the increase of the external resistance. The massive forces of the working fluid have less effect on the balancing efficiency than the viscosity for liquid SBDs.

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6

Zhang, Hong, Yong Tao Zhang, and Ren Zhong Zhou. "Research on the Automatic Walking-Type Launching System Applied in Jiubao Bridge Construction." Advanced Materials Research 538-541 (June 2012): 3299–303. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.3299.

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Анотація:

In Long-span bridge construction by incremental launching method, due to its quiet heavy launching weight, long cantilever and complex structural stress. The dragging-type launching equipment commonly used at present no longer applies. Based on Jiubao bridge project, a new launching system of Automatic Walking-type Launching System (AWLS) was developed. This AWLS is a self-balancing launching system that integrates with functions of lifting, pushing and rectifying. It features highly automation, safety and reliability in operation. By using this system, Jiubao Bridge was successfully erected by incremental launching method for the first time as a three-span beam-arch composite bridge at home and abroad.

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7

Jose, Dr Deepa, P. Suganya, and Dr Palanichamy Nirmal Kumar. "Content Addressable Memory Using Automatic Charge Balancing with Self-Control Mechanism and Master-Slave Match Line Design." Circuits and Systems 07, no. 06 (2016): 597–611. http://dx.doi.org/10.4236/cs.2016.76051.

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8

Hou, Quanshan, Yanan Zhang, Shuai Zhao, Yunhao Hu, and Yongwang Shen. "Tracking Control of Intelligent Vehicle Lane Change Based on RLMPC." E3S Web of Conferences 233 (2021): 04019. http://dx.doi.org/10.1051/e3sconf/202123304019.

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Autonomous lane changing, as a key module to realize high-level automatic driving, has important practical significance for improving the driving safety, comfort and commuting efficiency of vehicles. Traditional controllers have disadvantages such as weak scene adaptability and difficulty in balancing multi-objective optimization. In this paper, combined with the excellent self-learning ability of reinforcement learning, an interactive model predictive control algorithm is designed to realize the tracking control of the lane change trajectory. At the same time, two typical scenarios are verified by PreScan and Simulink, and the results show that the control algorithm can significantly improve the tracking accuracy and stability of the lane change trajectory.

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9

Pashkov, E. N., Nikita Martyushev, and Pavel G. Yurovsky. "Stationary Rotation of the Partially Liquid-Filled Unbalanced Rotor under External Friction Force Action." Advanced Materials Research 1040 (September 2014): 903–6. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.903.

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Анотація:

Rotor rotation with liquid layer on the chamber wall under viscoelastic action of the shaft within a planar model is examined in the article. The solution to the problem of determining the deflection of a rotating shaft with liquid filled chamber is given, which is important when designing an automatic balancing device. The issue of the cooperative motion of a solid body and liquid is considered in mathematical research. The set task is performed by applying D'Alembert's principle. The modeling results indicate that an increase in liquid’s mass in a rotor decreases its critical rotation speed; at the same time, the external friction accelerates the system’s self-centering. The developed mathematical models enable us to select the design parameters of a liquid-type autobalancer which operates within the set range of rotor’s angular velocity.

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10

Hoffman, Mark, and Charles Cash. "Understanding Impacts of Technology, Process Changes, and Organizational Controls to Improve the Cost of Cash in Retail Stores." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 51, no. 16 (October 2007): 977–80. http://dx.doi.org/10.1177/154193120705101603.

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Анотація:

The emergence of self checkout systems and transaction kiosks present an opportunity for retailers to redesign the cash management process and identify more efficient and automated solutions to improve performances within each step of the system. International and domestic retail companies from various industry segments are taking different views of opportunities to reduce the cost of cash. A socio-technical systems approach provides a foundation for anchoring predictions in process improvements and task automation and a context to identify impacts of step improvements in the Cash Flow Process. This paper provides an overview of a framework, findings from cash office operations studies of domestic and international retailers, and performance benchmarks for repetitive tasks of till balancing and till re-sets to help evaluate proposed changes in store cash office operations.

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Більше джерел

Частини книг з теми "Automatic balancing (self-balancing)"

1

Wang, Zihan, and Minxing Fan. "Simulation of Automatic Control System of Self-Balancing Robot Based on MATLAB." In Advanced Intelligent Technologies for Industry, 299–305. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9735-7_29.

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2

Li, Qiong, Wangling Yu, and H. Henry Zhang. "Modeling, Model Reduction, and Control of a Hands-Free Two-Wheeled Self-Balancing Scooter." In Advanced Robotics and Intelligent Automation in Manufacturing, 185–202. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1382-8.ch007.

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Анотація:

Designing a two-wheeled self-balancing scooter involves in the synergistic approach of multidisciplinary engineering fields with mutual relationships of power transmission, mass transmission, and information transmission. The scooter consists of several subsystems and forms a large-scale system. The mathematical models are in the complex algebraic and differential equations in the form of high dimension. The complexity of its controller renders difficulties in its realization due to the limit of iteration period of real time control. Routh model reduction technique is employed to convert the original high-dimensional mathematical model into a simplified lower dimensional form. The modeling is derived using a unified variational method for both mechanical and electrical subsystems of the scooter, and for the electronic components equivalent circuit method is adopted. Simulations of the system response are based on the reduced model and its control design. A prototype is developed and realized with Matlab-Labview simulation and control environment.

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Тези доповідей конференцій з теми "Automatic balancing (self-balancing)"

1

Horvath, Roland, George T. Flowers, and Jerry Fausz. "Influence of Nonideaities on the Performance of a Self-Balancing Rotor System." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82279.

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An analytical, numerical and experimental investigation of the dynamic behavior of a four degree of freedom passive balancing system using pendulum balancers is presented. This work is an extension of previous studies which considered such automatic balancing systems and devices. It has previously been demonstrated analytically that a 4-DOF pendulum self-balancing system is capable, under idealized conditions, of exact radial balancing [10]. However, imperfections in the fabrication and assembly of such a system tend to compromise a number of the ideal modeling assumptions that were used to provide this result. The present research study examines the effects of a variety of such imperfections and their influence on the functional capability of the self-balancing system. Both analytical/simulation results and experimental validation are provided and discussed.

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2

Tank, Dilesh Bipin, Riady Siswoyo Jo, and Hudyjaya Siswoyo Jo. "Dynamic Modelling and Control of Self-Balancing One-Legged Robot." In 2018 IEEE International Conference on Automatic Control and Intelligent Systems (I2CACIS). IEEE, 2018. http://dx.doi.org/10.1109/i2cacis.2018.8603694.

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3

Fan, Hongwei, Minqing Jing, Jingjuan Zhi, Heng Liu, and Wenhui Xin. "An Online Automatic Balancing System to Actively Reduce Vibration of Machine Tool Motorized Spindle." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36242.

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Анотація:

Mass imbalance is one of main vibration sources for rotating machine tool spindle, which has many negative effects on spindle bearing and work-piece surface. In order to reduce these harmful effects, an online automatic balancing system is investigated in this paper. The system proposed is composed of sensor, electromagnetic ring balancer and active controller. The electromagnetic ring balancer uses an annular coil to generate the pulsing drive magnetic field and uses the counterweight plate to obtain the required correction mass. When the spindle rotates, if unbalance occurs the proposed balancer will be driven to reach the predetermined angular position under the electromagnetic field to then realize balance, the balanced position can be determined according to the measured signals and the adaptive influence coefficient method. The new single-plane self-balancing motorized spindle and DSP-based controller were developed to validate design of the proposed online active balancing system. The experimental results show that the developed balancing system is effective for vibration suppression of rigid spindle.

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4

Ontiveros-Guerrero, Ruben, and Francisco Jurado. "Simple Direct MRAC of a Self-Balancing Robot mounted on a Ball." In 2019 16th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE). IEEE, 2019. http://dx.doi.org/10.1109/iceee.2019.8884589.

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5

Jmel, Ines, Habib Dimassi, Salim Hadj-Said, and Faouzi Msahli. "High gain controller with state feedback for two wheeled self-balancing robot." In 2019 19th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA). IEEE, 2019. http://dx.doi.org/10.1109/sta.2019.8717294.

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6

Luo Yongbiao. "Design of fault self-diagnosis in vertical automatic drilling and milling dynamic balancing machine." In 2011 International Conference on System Science, Engineering Design and Manufacturing Informatization (ICSEM). IEEE, 2011. http://dx.doi.org/10.1109/icssem.2011.6081204.

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7

Jmel, Ines, Habib Dimassi, Salim Hadj-Said, and Faouzi Msahli. "An adaptive observer for two wheeled self-balancing robot with a varying center of mass." In 2019 19th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA). IEEE, 2019. http://dx.doi.org/10.1109/sta.2019.8717303.

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8

Thompson-Salinas, Alfonso, Martin Ortega-Bren˜a, Manuel H. De la Torre-Ibarra, Bernardino Barrientos-Garci´a, and Victor J. Gonzalez-Villela. "Hydraulic Balance Ring Study and Design Using Optical Techniques." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63260.

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Анотація:

A new approach to understand factors that affect self-balancing devices is proposed. Experimentation was conducted to determine the influence of different factors on the performance of an automatic washing machine hydraulic balance ring fluid during transient and steady states. Two different optical techniques were used: one for visualization (high-speed photography) and another for velocity field measurement (Particle Image Velocimetry, PIV). Results were used to build a new balancer design and compared with previous findings. Important factors in balancer design were deducted.

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9

Stanley, Ian, and Stefan Schmitz. "Advances in Filtration in Automatic Lube Oil Filters." In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6135.

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Анотація:

In 2006 an automatic lube oil filtration system with an automatic backflushing filter and a centrifuge for diesel locomotives was presented at the ASME Spring Technical Conference [1]. The filter cleans itself continuously and the system can be used instead of conventional disposable paper filters to reduce servicing requirements, improve oil cleanliness and reduce the oil system’s exposure to contaminants. In 2015 at the ASME Fall Technical Conference, a development of the system was presented that introduced an electric pump to boost both centrifuge and automatic filter performance at lower engine speeds, as seen during locomotive idling or coasting. The next development addresses the automatic filter mesh, something that has not improved substantially over the last 20 years. The main challenge with improving the mesh for a backflushing filter has been balancing the filtration grade with self-cleaning performance. By going to a finer mesh that catches ever smaller particles, the filter element tends to become more difficult to backflush. For a given wire diameter the free flow area also decreases when the openings become smaller, reducing the maximum mesh loading. Reducing the diameter of the wire used increases the free flow area, but makes the mesh more fragile and difficult to weld. A recent advancement in the mesh design now allows the automatic filter to filter the oil to a much finer degree than was previously possible while maintaining high self-cleaning performance. The filtration performance was evaluated by using the multi-pass method according to ISO 16889, while the backflushing performance was evaluated on our in-house test stand. Currently these elements are being field tested. Being able to filter and separate much smaller particles is expected to reduce long term engine wear and, in certain cases, improve oil life.

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10

Chen, Zhigang, Xiaogang Ruan, Yuan Li, Yingliang Bai, and Xiaoqing Zhu. "Dynamic modeling of a self-balancing cubical robot balancing on its edge." In 2017 2nd International Conference on Robotics and Automation Engineering (ICRAE). IEEE, 2017. http://dx.doi.org/10.1109/icrae.2017.8291344.

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