Thematische Bibliographien / Signal designer

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Auswahl der wissenschaftlichen Literatur zum Thema „Signal designer“

Autor: Grafiati

Veröffentlicht am 24. Juni 2021

Zuletzt aktualisiert am 6. Februar 2022

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Zeitschriftenartikel zum Thema "Signal designer"

Jones, E. Yvonne. „Designer protein delivers signal of choice“. Nature 565, Nr. 7738 (Januar 2019): 165–66. http://dx.doi.org/10.1038/d41586-018-07883-z.

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Bradley, Robert W., und Baojun Wang. „Designer cell signal processing circuits for biotechnology“. New Biotechnology 32, Nr. 6 (Dezember 2015): 635–43. http://dx.doi.org/10.1016/j.nbt.2014.12.009.

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Taneva, Ina. „Information Design“. American Economic Journal: Microeconomics 11, Nr. 4 (01.11.2019): 151–85. http://dx.doi.org/10.1257/mic.20170351.

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A designer commits to a signal distribution that is informative about a payoff-relevant state. Conditional upon the privately observed signals, agents take actions that affect their payoffs as well as those of the designer. We show how to derive the (designer) optimal information structure in static finite environments. We fully characterize it in a symmetric binary setting for a parameterized game. In this environment, conditionally independent private signals are never strictly optimal. (JEL C72, D78, D82, D83)

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Thiel, Gerald, Anke Kaufmann und Oliver G. Rössler. „G-protein-coupled designer receptors – new chemical-genetic tools for signal transduction research“. Biological Chemistry 394, Nr. 12 (01.12.2013): 1615–22. http://dx.doi.org/10.1515/hsz-2013-0164.

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Abstract G-protein-coupled receptors (GPCRs) are the largest group of plasma membrane receptors in nature and are activated by a variety of different ligands. The biological outcome of GPCR stimulation is complex, as a plethora of signaling pathways are activated upon stimulation. These complexity and diversity of GPCR signaling make it difficult to manipulate the signaling pathway of a specific GPCR by natural ligands. To reduce the complexity in experimental settings, specific pharmacological ligands that preferentially activate one signaling pathway have been developed. In addition, G-protein-coupled designer receptors that are unresponsive to endogenous ligands but can be activated by otherwise pharmacologically inert compounds have been designed. These receptors have been termed designer receptors exclusively activated by designer drugs. The lack of constitutive activity of these designer receptors allows their use for in vitro and in vivo studies of GPCR-mediated signal transduction. The analysis of recently generated transgenic mice showed that the expression of G-protein-coupled designer receptors represents a powerful chemical-genetic tool to investigate GPCR signaling and function.

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Rawski, Mariusz, Bogdan Falkowski und Tadeusz Łuba. „Digital signal processing designing for FPGA architectures“. Facta universitatis - series: Electronics and Energetics 20, Nr. 3 (2007): 437–59. http://dx.doi.org/10.2298/fuee0703437r.

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This paper presents the discussion on efficiency of different implementation methodologies of DSP algorithms targeted for modern FPGA architectures. Modern programmable structures are equipped with specialized DSP embedded blocks that allow implementing digital signal processing algorithms with use of the methodology known from digital signal processors. On the first place however, programmable architectures give the designer the possibility to increase efficiency of designed system by exploitation of parallelism of implemented algorithms. Moreover, it is possible to apply special techniques such as distributed arithmetic (DA) that will boost the performance of designed processing systems. Additionally, application of the functional decomposition based methods, known to be best suited for FPGA structures allows utilizing possibilities of programmable technology in very high degree. The paper presents results of comparison of different design approaches in this area.

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Pei, Ying, Sarah C. Rogan, Feng Yan und Bryan L. Roth. „Engineered GPCRs as Tools to Modulate Signal Transduction“. Physiology 23, Nr. 6 (Dezember 2008): 313–21. http://dx.doi.org/10.1152/physiol.00025.2008.

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Different families of G-protein-coupled receptors (GPCRs) have been engineered to provide exclusive control over the activation of these receptors and thus to understand better the consequences of their signaling in vitro and in vivo. These engineered receptors, named RASSLs (receptors activated solely by synthetic ligands) and DREADDs (designer receptors exclusively activated by designer drugs), are insensitive to their endogenous ligands but can be activated by synthetic drug-like compounds. Currently, the existing RASSLs and DREADDs cover the Gi, Gq, and Gs signaling pathways. These modified GPCRs can be utilized as ideal tools to study GPCR functions selectively in specific cellular populations.

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Jarrah, Amin, und Mohsin M. Jamali. „Reconfigurable FPGA/GPU-Based Architecture of Block Compressive Sampling Matching Pursuit Algorithm“. Journal of Circuits, Systems and Computers 24, Nr. 04 (04.03.2015): 1550055. http://dx.doi.org/10.1142/s0218126615500553.

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The signals in reality are sparse signal where a few numbers of samples are non-zero. So, a compression technique must be applied to reduce the overhead of processing, storing, and transmission. Blocking compressive sampling matching pursuit (BCoSaMP) algorithm is a recursive algorithm which provides an accurate reconstruction of sparse signal from a small number of noisy samples. It doesn't assume that the noise is Gaussian or bounded but it uses information about the noise magnitude for stopping criterion. However, BCoSaMP is a computationally intensive algorithm. So, BCoSaMP algorithm has been implemented on both field-programmable gate array (FPGA) and graphic processing units (GPU) by exploiting parallel and pipelining approaches. A new software tool called radar signal processing tool (RSPT) is also presented. It allows the designer to auto-generate fully optimized VHDL representation of BCoSaMP by specifying many user input parameters through graphical user interface (GUI). Moreover, it provides the designer a feedback on various performance parameters. This offer the designer the ability to make any adjustments to the BCoSaMP component until gets the desired performance of the overall system-on-chip (SoC). Our simulation results indicate that the achieved speed-up of FPGA and GPU over the sequential one is improved by up to 14 and 10.7, respectively.

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Yu, Sunkyu, Xianji Piao, Jiho Hong und Namkyoo Park. „Metadisorder for designer light in random systems“. Science Advances 2, Nr. 10 (Oktober 2016): e1501851. http://dx.doi.org/10.1126/sciadv.1501851.

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Disorder plays a critical role in signal transport by controlling the correlation of a system, as demonstrated in various complex networks. In wave physics, disordered potentials suppress wave transport, because of their localized eigenstates, from the interference between multiple scattering paths. Although the variation of localization with tunable disorder has been intensively studied as a bridge between ordered and disordered media, the general trend of disorder-enhanced localization has remained unchanged, and the existence of complete delocalization in highly disordered potentials has not been explored. We propose the concept of “metadisorder”: randomly coupled optical systems in which eigenstates can be engineered to achieve unusual localization. We demonstrate that one of the eigenstates in a randomly coupled system can always be arbitrarily molded, regardless of the degree of disorder, by adjusting the self-energy of each element. Ordered waves with the desired form are then achieved in randomly coupled systems, including plane waves and globally collective resonances. We also devise counterintuitive functionalities in disordered systems, such as “small-world–like” transport from non–Anderson-type localization, phase-conserving disorder, and phase-controlled beam steering.

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Aseeri, Mohammed, Waleed Alomar, Hamad Alotaibi und Abdulrahman Aljurbua. „Retrodirective Transceiver Utilizing Phased Array and Direction Finder“. Applied Computational Electromagnetics Society 35, Nr. 9 (04.11.2020): 1073–79. http://dx.doi.org/10.47037/2020.aces.j.350914.

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Retrodirectivity have several important applications in communication and in wireless power transfer. In this paper, frequency sensitive retrodirective transceiver is proposed. It receives a signal and infers its direction from its frequency spectrum, then it can transmit a new signal back to the same or other direction at the designer wish. To determine the direction of the coming signal, a 0.85-1.15GHz frequency scanning phased array antenna is used so that the received signal would have a distorted spectrum with the maximum amplitude frequency component linked to the direction of the signal. Based on the frequency scanning, the retrodirectivity system can be used for wireless power transfer or for reactive jamming. Special circuit is designed to receive the signal with strongest power and to isolate the frequency component with maximum amplitude. Phase-locked loop (PLL) circuit is used to link such frequency to specific phase shift that is introduced to the transmitter array antenna to send a new signal to the same direction of the received signal. ADS simulation is performed to demonstrate the performance of each block.

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ANDJELKOVIĆ, BOJAN, VANCO LITOVSKI und VOLKER ZERBE. „MISSION LEVEL MODELING AND SIMULATION LANGUAGE FOR MIXED-SIGNAL SYSTEM-ON-CHIP DESIGN“. Journal of Circuits, Systems and Computers 16, Nr. 01 (Februar 2007): 15–28. http://dx.doi.org/10.1142/s0218126607003435.

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Modern complex system design demands modeling on a high level of abstraction together with the system environment components. Such model enables mission level system simulation in the context of its operational conditions. Mission level design using hardware description language AleC++ is presented in this paper. It provides mission and system level verification of a mixed-signal system-on-chip. After validation at mission and system level, this language enables designers to replace some of the components with implementation level models to test and validate the system implementation at mission level. Also, the language provides modeling capabilities that give the designer an opportunity to analyze the influence of low-level technological and environmental parameters to the complete system behavior. In this way a uniform design framework is achieved from mission/system down to implementation level. The application of the language both for mission/system and implementation level modeling is illustrated by an example of the electronic compass.

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Dissertationen zum Thema "Signal designer"

Langelaar, Johannes, Mattsson Adam Strömme und Filip Natvig. „Development of real time audio equalizer application using MATLAB App Designer“. Thesis, Uppsala universitet, Signaler och System, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388577.

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This paper outlines the design of a high-precision graphic audio equalizer with digital filters in parallel, along with its implementation in MATLAB App Designer. The equalizer is comprised of 31 bands separated with a one-third octave frequency ratio, and its frequency response is controlled by 63 filters. Furthermore, the application can process audio signals, in real time, recorded by microphone and from audio files. While processing, it displays an FFT plot of the output sound, also in real time, equipped with a knob by which the refreshing pace can be adjusted. The actual frequency response proved to match the desired one accurately, but the matching is computationally demanding for the computer. An even higher accuracy would entail a computational complexity beyond the power of ordinary computers, and was thus concluded to be inappropriate. As a result, the final application manages to provide most laptops with both high precision and proper functionality.

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Singh, Simranjit, und Iliass Temsamani. „Analys av åtgärder mot kvalitetsbrister inom signalprojektering“. Thesis, KTH, Hållbar produktionsutveckling (ML), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297913.

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Signalprojekteringen konstruerar och skapar de förutsättningar som krävs för att en signalbygghandling ska färdigställas. Vid förändringar som exempelvis upprustningar, projekteras de signalställverk som finns placerade längs Sveriges järnvägar för att sedan byggas av entreprenader. Projekteringen är en grund för att skapa rätt förutsättningar för att genomföra ett kvalitativt bygge. Trafikverket har märkt av kvalitetsbrister inom signalprojekteringen, som har flertal orsaker men mycket pekar mot en brist på kompetens. Trafikverket har sedan 2019 infört nya kompetenskrav för sina upphandlingar med konsulter, som ska säkerställa att arbetet genomförs med rätt teknisk kompetens. Uppgiften är att undersöka om Trafikverkets nya kompetenskrav används, följs upp och om de åstadkommit en effekt samt om kravskrivningen bör justeras och åtgärder för främja kompetens, framföras. Examensarbetet genomförande bygger främst på datainsamling genom intervjuer och enkäter. Resultatet av detta projekt fastställde att kompetenskraven inte gett någon tydlig effekt i kvalitetsnivån. Mycket beror på att det är för tidigt för en utvärdering, då järnvägsprojekt har långa ledtider men också på andra faktorer. Kompetenskraven uppskattas men kravskrivning bör justeras för att bli tydligare. De åtgärder som ansågs mest lämpliga var återkoppling till projektör, eget forum för projektörer, anläggningsspecifika kurser och mentormöjligheter till oerfarna projektörer. En åtgärd som kan motverka mycket med kvalitetsbrister som nämns i projektet är mervärdesupphandlingar. Mervärdesupphandling medför möjligheter som att kravställa mjuka kriterier som exempelvis erfarenhet och utbildningar och motverkar de negativa effekter men den nuvarande upphandlingsformen på lägst pris.
Signal designing means construction and modelling of railway signal facilities. Changes within the railway leads to modelling being made where the adequate prerequisites for a functioning facility are drawn by using CAD or BIM. Trafikverket have noticed various of quality deficiencies within the modelling phase of their facilities. It is mainly due to a lack of technical competence for the signal designers. Since 2019, Trafikverket have implemented new requirements for competence during their negotiations with consulting firms that conduct the designs, as a countermeasure for these quality deficiencies within competence. However, the effect of these countermeasures is still unknown. The objective for this project is to examine if the new requirements are used in the projects, if they are followed-up and if there are any effects from them. Moreover, to conclude if the requirements should be adjusted and if there are valid measures to increase the development of competence for signal designers. The methodology of the project is mostly based on interviews with specialists and analyses of the results. The result concluded that there is no definite effect of the competence requirements, mostly due to the length (time) of railway related projects. Furthermore, the competence requirements are appreciated by Trafikverkets employees however, it should be adjusted to be more definite. The best countermeasures are feedback to signal designers and followed by other countermeasure such as an own forum, more specific facility courses (education) and mentors for signal designers. A new form of negotiation which is called the “More value negotiation” is also a method of countering quality deficiencies.

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Khomentrakarn, Chusak. „Testability analysis of asynchronous circuits designed from signal transition graphs“. Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22657.

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This work investigates testability of asynchronous circuits and its relation with signal transition graphs (STGs), using a state based approach on non-scan asynchronous circuits. In addition to the testability characteristics studied, this work suggests some test generation techniques for asynchronous circuits designed from STGS.
An event fault, interpreted as either a stimulating fault or an inhibiting fault of a transition, is used to cover the stuck-at-fault (SAF) behavior of an asynchronous circuit. An advantage of such analysis is that test vectors for an inhibiting fault can be obtained from operations on a signal transition graph (STG) or a state graph (SG) rather than simulation at the circuit level. A test vector for a test state is represented in an STG by a test marking for each event fault.
The lock relation of signals is a property proposed for hazard-free asynchronous circuit's synthesis. However, it is found that there is a special case of the lock relation that can prohibit the testing of some faults, the introduction of which cannot be avoided by the circuit level mapping. Some independent undetectable faults due to uncontrollable test states however can be detected if the reset state is the test state.
Using a minimized two-level sum-of-products representation, each literal in a cube of the sum-of-products form is found to have its own function corresponding to the STG. Consequently, four types of literals are defined and their relations with the SAF behavior over the stimulating/inhibiting fault are analyzed. Although factorization of a logic equation binded to a C-element or a set-reset (SR) flip-flop is not always possible, a correct implementation on a set-dominant SR flip-flop is guaranteed. (Abstract shortened by UMI.)

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Tarnoff, David. „Episode 1.3 – Anatomy of a Binary Signal“. Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/computer-organization-design-oer/5.

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In this episode, we define the components of a single binary signal as its value changes over time. This will provide us with a starting point for the terminology we will be using throughout the rest of the series.

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Rajroop, Peter J. „Fast pulse interactions on a transmission system : a novel EMP measuring technique using new designed loop probes“. Thesis, City University London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307875.

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Awad, E. T. A. „Identification of competencies for sign designers in Jordan“. Thesis, Coventry University, 2012. http://curve.coventry.ac.uk/open/items/b27d73c7-71a7-4c87-9e65-ae3a074ddd63/1.

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The aim of this research is to propose ways in which graphic designers can improve the design of commercial signage in Amman, Jordan. A survey of the effectiveness of recent signage regulation in the type and placement of commercial signage has led to the conclusion that regulations alone will not lead to improved quality in the production and siting of commercial signage without multi-stakeholder involvement and the dedicated training of those working in this field. There is a need for practitioners to develop specialised skills and knowledge in sign design, as opposed to applying only generalised graphic design techniques to sign production. Such skills include problem-solving, visual communication methods and competency in the application of the latest multi-media technology. It is proposed that by developing and incorporating sign-design competencies within the graphic design curriculum, practitioners will be better able to work effectively in this field. Following the investigation of the situation in Amman with respect to commercial signage, four related investigations were undertaken in order to formulate a list of recommendations which could be incorporated into an improved curriculum for teaching sign design. The first study investigated the problems caused by poorly designed and situated commercial signage in Amman. The second and third studies investigated urban signage solutions adopted by companies in other parts of the world, namely the global marketing of the McDonald’s brand and the corporate signage of Coventry University UK. The final study was a comparative investigation of graphic design education (with respect to sign design) in Jordan and the UK. Following these investigations, the Delphi technique was employed to elicit a set of 25 competencies for sign design learners, recommended by an expert panel of sign industry professionals and design academics. It is anticipated that the incorporation of such competencies will contribute to the improvements within the sign industry, as designers become better equipped for the task of sign design. Therefore it is anticipated that this research will contribute to the furthering of design practice by identifying the additional knowledge and competencies that graphic designers need to create appropriate commercial signs.

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Shariat, Yazdi Ramin. „Mixed signal design flow, a mixed signal PLL case study“. Thesis, University of Waterloo, 2001. http://hdl.handle.net/10012/916.

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Mixed-signal designs are becoming more and more complex every day. In order to adapt to the new market requirements, a formal process for design and verification of mixed signal systems i. e. top-down design and bottom-up verification methodology is required. This methodology has already been established for digital design. The goal of this research is to propose a new design methodology for mixed signal systems. In the first two chapters of this thesis, the need for a mixed signal design flow based on top-down design methodology will be discussed. The proposed design flow is based on behavioral modeling of the mixed signal system using one of the mixed signal behavioral modeling languages. These models can be used for design and verification through different steps of the design from system level modeling to final physical design. The other advantage of the proposed flow is analog and digital co-design. In the remaining chapters of this thesis, the proposed design flow was verified by designing an 800 MHz mixed signal PLL. The PLL uses a charge pump phase frequency detector, a single capacitor loop filter, and a feed forward error correction architecture using an active damping control circuit instead of passive resistor in loop filter. The design was done in 0. 18- µ m CMOS process technology.

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Tarnoff, David. „Episode 2.7 – The Effect of Sampling Rates on Digital Signals“. Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/computer-organization-design-oer/13.

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Converting an analog signal to digital involves more than just digitizing some measurements. Consequences result from sampling an analog signal and care has to be taken to capture all the desired frequencies and avoid creating new ones.

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Spalding, Scott A. Jr. „Adaptive OFDM Radar Signal Design“. Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1335728143.

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Srivastava, Y. „Large signal modelling of coupled-cavity travelling wave tubes“. Thesis, Lancaster University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379740.

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Bücher zum Thema "Signal designer"

Shukla, Vikas. Signal integrity for PCB designers. Attleboro, MA: Reference Designer Inc., 2009.

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Sign designer's sketchbook. Cincinnati, Ohio: ST Publications, 1988.

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CMOS: Mixed signal circuit design. 2. Aufl. Piscataway, NJ: IEEE Press, 2009.

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CMOS: Mixed signal circuit design. New York: Wiley, 2002.

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Baker, R. Jacob. CMOS: Mixed signal circuit design. 2. Aufl. Hoboken, NJ: John Wiley & Sons, 2009.

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Baker, R. Jacob. CMOS: Mixed signal circuit design. 2. Aufl. Piscataway, NJ: IEEE Press, 2009.

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Small signal audio design. Oxford: Focal Press, 2010.

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H, Currie Edward, und SpringerLink (Online service), Hrsg. Introduction to Mixed-Signal, Embedded Design. New York, NY: Springer Science+Business Media, LLC, 2011.

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Lin, Chieh. Mixed-signal layout generation concepts. Boston, MA: Kluwer Academic Publishers, 2004.

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Electronics, noise, and signal recovery. London: Academic Press, 1993.

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Buchteile zum Thema "Signal designer"

Javid, Farakh, Stéphanie Youssef, Ramy Iskander und Marie-Minerve Louërat. „A Designer-Assisted Analog Synthesis Flow“. In Analog/RF and Mixed-Signal Circuit Systematic Design, 123–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36329-0_6.

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Dey, Sounak, Dibyanshu Jaiswal, Himadri Sekhar Paul und Arijit Mukherjee. „A Semantic Algorithm Repository and Workflow Designer Tool: Signal Processing Use Case“. In Internet of Things. IoT Infrastructures, 53–61. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-47075-7_7.

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Wang, K. C. „Signals and Signal Processing“. In Design and Implementation of the MTX Operating System, 257–71. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17575-1_9.

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Self, Douglas. „Signal Switching“. In Small Signal Audio Design, 575–609. Third edition. | Abingdon, Oxon ; New York, NY : Routledge, 2020.: Focal Press, 2020. http://dx.doi.org/10.4324/9781003031833-21.

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Vidrih, Zlatko, und Eric Vezzoli. „Electrovibration Signal Design“. In Haptics: Perception, Devices, Control, and Applications, 304–14. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42324-1_30.

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Brokaw, A. Paul. „Sensor Signal Normalization“. In Analog Circuit Design, 97–116. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4757-2310-6_7.

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Russ, Samuel H. „EMI/EMC: Design and Susceptibility“. In Signal Integrity, 137–47. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29758-3_11.

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Saggese, E., und S. Tirró. „Signals“. In Satellite Communication Systems Design, 11–39. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3006-0_2.

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Saggese, E. „Baseband Signal Processing“. In Satellite Communication Systems Design, 75–120. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3006-0_4.

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Hill, Geoff. „Small Signal Model“. In Loudspeaker Modelling and Design, 37–42. New York, NY: Routledge, [2019]: Routledge, 2018. http://dx.doi.org/10.4324/9781351116428-10.

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Konferenzberichte zum Thema "Signal designer"

Praisler, Mirela, und Stefanut Ciochina. „Intelligent screening for designer drugs: A signal analysis“. In 2013 17th International Conference on System Theory, Control and Computing (ICSTCC). IEEE, 2013. http://dx.doi.org/10.1109/icstcc.2013.6688996.

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Jezek, Petr, und Lukas Vareka. „Workflow Designer - A web Application for Visually Designing EEG Signal Processing Pipelines“. In 2019 IEEE 19th International Conference on Bioinformatics and Bioengineering (BIBE). IEEE, 2019. http://dx.doi.org/10.1109/bibe.2019.00072.

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„How much analog does a designer need to know for successful mixed-signal design? (panel)“. In the 35th annual conference, chair Stephan Ohr. New York, New York, USA: ACM Press, 1998. http://dx.doi.org/10.1145/277044.277112.

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Cheng, Y. Q., M. Zhu und W. Ge. „Signal integrity simulation design of image processor PCB combined with electromagnetic compatibility analyses based on Altium Designer 6“. In 2009 4th IEEE Conference on Industrial Electronics and Applications (ICIEA). IEEE, 2009. http://dx.doi.org/10.1109/iciea.2009.5138304.

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Seeram, Siva Satya Sri Ganesh, Shanmukha Naga Naidu Polireddi, Geethu Remadevi Somanathan und Ramesh Bhakthavatchalu. „Synthesis of Synchronous Gray Code Counters by Combining Mentor Graphics HDL Designer and Xilinx VIVADO FPGA Flow“. In 2020 International Conference on Communication and Signal Processing (ICCSP). IEEE, 2020. http://dx.doi.org/10.1109/iccsp48568.2020.9182333.

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Münzer, Clemens, und Kristina Shea. „An Integrated Approach to Automated Synthesis, Simulation and Optimization of Energy and Signal-Based Design Concepts“. In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59816.

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Computers have the capability to support human designers in a variety of tasks including releasing the human designer from routine tasks via design automation as well as sparking and supporting innovation and creativity. To support the concept phase effectively, a wide range of possible concepts, which are quantitatively evaluated, should be considered to enable designers to explore the solution space and choose advantageous concepts. To enable automated solution space exploration and evaluation, this research presents a method that uses automated model transformations based on a graph-based object-oriented knowledge representation. The approach combines previous research with automated generation of variable assignments for generated concepts and optimization using simulated annealing. The variable assignments are generated by automatically setting up and solving constraint satisfaction problems and evaluated using automatically generated simulation models. The main contributions of this research are an integrated and fully automated approach starting with task definition and ending with a solution space of optimized product concepts and generic model transformations that enable automated use of Boolean satisfiability, constraint satisfaction and bond graph-based simulation methods. The method is validated on the case studies of automotive powertrains.

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Boulahbal, D., M. F. Golnaraghi und F. Ismail. „Gear Crack Detection With the Wavelet Transform“. In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-4009.

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Abstract The wavelet transform has the ability to extract global information as well as localized small features from a given signal. This property makes it very well suited to the study of time-varying vibration signals generated by the operation of faulty gears. For a healthy and properly designed gear set, the vibration signal consists mainly of the gear meshing frequency component and its harmonics. Developing fatigue cracks introduce short-time transients that modulate both the amplitude and phase of the otherwise steady vibration signal. These transients are often difficult to detect with the traditional time-only or frequency-only techniques. Being a joint time-frequency distribution, the Wavelet transform allows one to look at the evolution in time of a signal’s frequency content. It thus appears to be the ideal tool to detect the localized transients. In this study, we use both the amplitude and phase maps of the wavelet transform to assess the condition of an instrumented gear test rig. With the proposed technique, simulated cracks as small as 20% of the tooth width at the root are easily detectable.

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Hou, Chin-Che, und Min-Chun Pan. „Feature Extraction Based on Teager-Kaiser Energy Operation and Envelope Spectra for Fault Detection of a Reciprocating Compressor“. In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24550.

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Abstract In this paper, signal analysis techniques based on Teager-Kaiser energy operation and envelope spectra for fault detection of the discharge valve of a reciprocating compressor is proposed. The method can accurately identify the existing fault of vibration signal features that it simulated by the synthetic signals. A two-phase study was designed to explore the signals simulation and the experimental validation. Signals simulation, which is based on the operation of a reciprocating compressor, and experiment design, which uses three conditions. The first stage is to simulate the operation of the reciprocating compressor, which is to simulate a synthetic signal for the cycle and impact. The synthetic signal is composed of a noise, square wave, and pulse wave. In this study, the synthetic signal is signal-processed by the Teager-Kaiser energy operator and the envelope spectrum that they can effectively extract feature signal and the noise almost is eliminated. The second stage is applied to the signal processing technique proposed in the first stage. Experimental verification of experiment design by the different operating conditions of reciprocating compressor valves. Through the above analysis technology, it is proved that the synthetic signal can be eliminated the background noise to obtain the feature signal. The feasibility of the proposed approach is verified by simulation results, the experiment is to validate with the measurement signals from a six-cylinder reciprocating compressor under different valve conditions. Simulations and experimental results support the proposed technology positively.

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Tse, Peter W., und Wei Guo. „An Ensemble Empirical Mode Decomposition-Based Lossy Signal Compression Method for a Remote and Wireless Bearing Condition Monitoring System“. In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70495.

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Rolling bearings are one of the most widely used and most likely to fail components in the vast majority of rotating machines. A remote and wireless bearing condition system allows the bearings to be inspected in remote or hazardous environments and increases the machine reliability. To minimize the transmission loads of enormous vibration data for accurate bearing fault diagnosis, a lossy compression method based on ensemble empirical mode decomposition (EEMD) method was proposed for bearing vibration signals in this paper. The EEMD method inherits the advantage of the popular empirical mode decomposition (EMD) method and can adaptively decompose a multi-component signal into a number of different frequency bands of signal components called intrinsic mode functions (IMFs). After applying the EEMD method to the vibration signal, the impulsive signal component related to the faulty bearing is extracted. The noise and irrelevant signal components that are often embedded in the collected vibration signals were removed. In the bearing signal, the distribution for most of the extremes is around zero. Almost all meaningful extremes related to the defect are concentrated in a small fraction of the samples. Hence, this signal compression provides high compression ratio for the bearing vibration signal. To verify the effectiveness of this method, raw vibration signals were collected from an experimental motor and a real traction motor. The proposed lossy signal compression method was applied to these vibration signals to extract the bearing signals and compress them. A comparison of this compression method with the popular wavelet compression method was also conducted. Wirelessly transmitting these compressed data demonstrates that the proposed signal compression method provides high compression performance for bearing vibration signals. Furthermore, the fault diagnosis using the reconstructed signal indicates that most of the impulses relating to the bearing fault are retained, including their periodicity and amplitudes, which are vital for accurate bearing fault diagnosis. Therefore, the compression of the bearing vibration signal contributes not only on the decreases of the file size and the transmission time, but also on the extraction of faulty bearing features to improve the accuracy in signal analysis. With the help of this method, wireless data communication for the remote and wireless bearing condition monitoring system becomes highly efficient, even in a limited bandwidth environment and maintains accurate bearing fault detection without loss of features and the need of transmitting a large amount of vibration data.

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Ashtari, Ali, Gabriel Thomas, Hector Garces und Benjamin C. Flores. „Radar signal design using chaotic signals“. In 2007 International Waveform Diversity and Design Conference. IEEE, 2007. http://dx.doi.org/10.1109/wddc.2007.4339442.

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Berichte der Organisationen zum Thema "Signal designer"

Arasu, K. T. Signal Designs via Combinatorial Designs. Fort Belvoir, VA: Defense Technical Information Center, Februar 2012. http://dx.doi.org/10.21236/ada565744.

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Betz, John W., Charles R. Cahn, Philip A. Dafesh, Christopher J. Hegarty, Kenneth W. Hudnut, Amanda J. Jones, Richard Keegan, Karl Kovach, Lawrence S. Lenahan und Howard H. Ma. L1C Signal Design Options. Fort Belvoir, VA: Defense Technical Information Center, Januar 2006. http://dx.doi.org/10.21236/ada456355.

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Regan, Lynne. Signal Transduction by Designed Metal-Binding Proteins. Fort Belvoir, VA: Defense Technical Information Center, August 2003. http://dx.doi.org/10.21236/ada416956.

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Nafakh, Abdullah Jalal, Yunchang Zhang, Sarah Hubbard und Jon D. Fricker. Assessment of a Displaced Pedestrian Crossing for Multilane Arterials. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317318.

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This research explores the benefits of a pedestrian crosswalk that is physically displaced from the intersection, using simulation software to estimate the benefits in terms of delay and pedestrian travel time. In many cases, the displaced pedestrian crossing may provide benefits such as reduced vehicle delay, reduced crossing distance, increased opportunity for signal progression, and reduced conflicts with turning vehicles. The concurrent pedestrian service that is traditionally used presents potential conflicts between pedestrians and three vehicular movements: right turns, permissive left turns, and right turns on red. The findings of this research suggest that a displaced pedestrian crossing should be considered as an option by designers when serving pedestrians crossing multi-lane arterials. In addition to reduced delay, pedestrian safety may be improved due to the shorter crossing distance, the elimination of conflicts with turning vehicles, and the potential for high driver compliance rates associated with signals, such as pedestrian hybrid beacons.

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Lee, Edward A. Design of Parallel Systems for Signal Processing. Fort Belvoir, VA: Defense Technical Information Center, September 1993. http://dx.doi.org/10.21236/ada275490.

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Larsen, Cory A. Signal conditioning circuitry design for instrumentation systems. Office of Scientific and Technical Information (OSTI), Januar 2012. http://dx.doi.org/10.2172/1034887.

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Lee, Edward A. System-Level Design Methodology for Embedded Signal Processors. Fort Belvoir, VA: Defense Technical Information Center, August 1997. http://dx.doi.org/10.21236/ada342899.

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Pileggi, Lawrence. Analysis of Design of Mixed-Signal Electronic Packaging. Fort Belvoir, VA: Defense Technical Information Center, November 1999. http://dx.doi.org/10.21236/ada377820.

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Applegate, D., G. T. Mulholland und G. Trotter. Feedthrough Signal Board to Cryostat Seal Design, Testing. Office of Scientific and Technical Information (OSTI), April 1990. http://dx.doi.org/10.2172/1031849.

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Harris, J. H. Signal Processing Studies Program VLSI Designs for Unary Functions. Fort Belvoir, VA: Defense Technical Information Center, September 1987. http://dx.doi.org/10.21236/ada188053.

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