Relevant bibliographies by topics / Servo and regulatory control

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Servo and regulatory control'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Servo and regulatory control"

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Ahmad, A., and A. Wahid. "APPLICATION OF MODEL PREDICTIVE CONTROL (MPC) TUNING STRATEGY IN MULTIVARIABLE CONTROL OF DISTILLATION COLUMN." Reaktor 11, no. 2 (2007): 66. http://dx.doi.org/10.14710/reaktor.11.2.66-70.

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A model predictive control strategy is proposed for multivariable nonlinear control problem in a distillation column. The aim is to provide a solution to nonlinear control problem that is favorable in terms of industrial implementation. The scheme utilizes multiple linear models to cover wider range of operating conditions. Depending on the operating conditions, suitable model is used in control computations. Servo and regulatory controls of the system are examined. Comparisons are made to conventional controllers. The results confirmed the potentials of the proposed strategy.
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Zeng, Meng Xiong, and Wen Ouyang. "CNC Servo System Base on PMSM." Applied Mechanics and Materials 331 (July 2013): 267–70. http://dx.doi.org/10.4028/www.scientific.net/amm.331.267.

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The paper study object is the CNC servo system, and it presented three closed-loops control strategy based on PMSM. Through dynamic mathematical model of current loop, rotational speed loop and position loop were established and simplified. The closed-loop regulator was designed. The system was corrected by the controller. The simulation, tuning and calculation of the closed-loop were carried in MATLAB/SIMULINK. The results indicated that the system design was correct, and the desired effect of control was achieved.
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Ngadengon, R., Y. M. Sam, J. H. S. Osman, and R. Tomari. "Discrete Integral Sliding Mode Control for Motion Servo System." Applied Mechanics and Materials 793 (September 2015): 595–99. http://dx.doi.org/10.4028/www.scientific.net/amm.793.595.

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This paper presents a discrete integral sliding mode control (DISMC) to control motion servo system. In DISMC, the order of the motion equation is equal to the order of original system. The past value of the disturbance is taken as the estimate of its present value. The controller is designed to be capable to achieve tracking even for the uncertain system. The designed controller will be compared with Linear Quadratic Regulator (LQR) and discrete Proportional Integral derivative (PID) controller to observe the capability for controlling the system. Simulations demonstrate that the DISMC is highly robust to control although exist uncertainties in the system.
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Kuang, Zhi Quan. "Study on Spindle Servo Control of Four-Axis Vertical CNC Machining Center." Advanced Materials Research 317-319 (August 2011): 83–87. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.83.

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This paper studies swinging rule of the fourth spindle in Four-axis vertical CNC machining center relying on the vertical axis head. Through current regulator, the speed regulator and improved single neuron PID speed controller the servo control system model is realized. Test results show that good performance is reached according to design of servo control system. The best is to read these instructions and follow the outline of this text.
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Kano, Manabu, Shinji Hasebe, Iori Hashimoto, and Hiromu Ohno. "Extension of Model Predictive Control for Solving Servo and Regulator Problems." KAGAKU KOGAKU RONBUNSHU 23, no. 3 (1997): 421–27. http://dx.doi.org/10.1252/kakoronbunshu.23.421.

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Leonardi, Fabrizio, José Jaime Da Cruz, and Anselmo Bittar. "Multivarible Robust Control with Time-domain Specifications: Servo and Regulator Problems." Electrical Engineering 89, no. 6 (2006): 461–67. http://dx.doi.org/10.1007/s00202-006-0026-2.

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Govindan, Petchinathan. "Evolutionary algorithms based tuning of PID controller for an AVR system." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 3 (2020): 3047. http://dx.doi.org/10.11591/ijece.v10i3.pp3047-3056.

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In this paper, an evolutionary algorithm based optimization algorithm is proposed with new objective function to design a PID controller for the automatic voltage regulator (AVR) system. The new objective function is proposed to improve the transient response of the AVR control system and to obtain the optimal values of controller gain. In this paper, particle swarm optimization (PSO) and cuckoo search (CS) algorithms are proposed to tune the parameters of a PID controller for the control of AVR system. Simulation results are capable and illustrate the effectiveness of the proposed method. Numerical and simulation results based on the proposed tuning approach on PID control of an AVR system for servo and regulatory control show the excellent performance of PSO and CS optimization algorithms.
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Vijayalakshmi, S., and D. Manamalli. "LPV Modeling and Performance Analysis of Boiler Drum Using IMC-PI Controller." Applied Mechanics and Materials 415 (September 2013): 117–21. http://dx.doi.org/10.4028/www.scientific.net/amm.415.117.

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This paper presents the development of linear parameter varying model and control strategy for Industrial boiler drum. The Boiler drum is modeled using the fundamental mass and energy balance equations and data collected from the real time plant. Based on the open loop response of the Boiler drum, the whole non-linear process is split into 4 approximate linear regions and their respective transfer function models are formed from the input-output data. Since the process is nonlinear in nature, linear transfer function models are developed in each operating regions and they are interpolated to obtain the linear parameter varying model. The LPV model is validated using the real time data. Since a single PI controller for whole process does not satisfy both servo and regulatory performance, a multi-model approach with four PI controllers is implemented for the process. Internal Model Control ( IMC)-PI controller is designed to analysis the servo and regulatory performance of the developed LPV model.
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Matiskova, Darina, and Milan Balara. "Upgrade of the Function Quality of the Machine Tools by the Oscillations Compensation." Applied Mechanics and Materials 718 (December 2014): 116–21. http://dx.doi.org/10.4028/www.scientific.net/amm.718.116.

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The paper deals with the improvement of quality control system harmonic drive with servo applying the method of compensation torque oscillations. The method consists of applying the rejection block. Post documents the oscillatory nature of the system servo-harmonic transmission. Described the reduction block connected to this system suppresses the oscillation of torque, speed and position of the harmonic drive output shaft thereby improving the quality of the regulatory process.The papers solves the problem of torque oscillations of the system which consist of servomotor and harmonic drive. Described rejection filter connected to the input of the system damps oscillations and increases the quality of control.
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Prabhaker Reddy, Ginuga, G. Radhika, and K. Anil. "Control of Continuous Stirred Tank Reactor Using Artificial Neural Networks Based Predictive Control." Advanced Materials Research 550-553 (July 2012): 2908–12. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.2908.

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In this work, a Neural network based predictive controller is analyzed to a non linear continuous stirred tank reactor (CSTR) carrying out series and parallel reactions: A→B→C and 2A→D. In the first step, the neural network model of continuous stirred tank reactor is obtained by Levenburg- Marquard training. The data for the training the network is generated using state space model of continuous stirred tank reactor. The neural network model of continuous stirred tank reactor is used in model predictive controller design. The performance of present neural network based model predictive controller (NNMPC) is evaluated through simulations for servo & regulatory problems of CSTR. The performance of neural network based predictive controller is found to be superior than conventional PI controller for setpoint tracking problems.
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Dissertations / Theses on the topic "Servo and regulatory control"

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Åberg, Emil. "Optimering av styrsystem för DC-servo." Thesis, Uppsala universitet, Signaler och System, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-346489.

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Automatic control is used to operate all kinds of processes: everything from temperature in houses to the control of robots. The course in automatic control in Uppsala University includes laboratory experiments where students conduct tests on a wheel controlled by a, so called, PID-controller which is one of the most widely used control mechanisms. This is a prime opportunity for students to get practical experience of working with PID-regulators and test how different parameters influence results. That system has been improved in this project as there were previously several issues with the system. The system was buggy and one of the tasks where the students are to test the systems’ reaction to oscillating input signals was cancelled because that feature had not been implemented yet. These issues were successfully fixed in this project and all tasks are now doable. Another problem was (and is still to some degree) that a lot of measurement noise occurs when measuring speed. This in turn causes the part of the controller that is sensitive to noise (the derivative part, for those familiar with PID-controllers) to function poorly. Some improvement has been made to this by using low-pass filtering for control purposes and the least square method for display purposes, but the signal is still noisy. The key to solving this issue lies in implementing an algorithm that can precisely estimate the speed without distorting any other information, or alternatively buy sensors with higher precision.
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Alcántara, Cano Salvador. "Analytical design of feedback compensators based on Robustness/Performance and Servo/Regulator trade-offs. Utility in PID control applications." Doctoral thesis, Universitat Autònoma de Barcelona, 2011. http://hdl.handle.net/10803/81120.

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Tot i la seva senzillesa, la idea de la realimentació negativa (o "feedback" en anglès) és extremadament poderosa i ha tingut un gran impacte en la societat des de la revolució industrial ençà. En l'actualitat, els sistemes de control estan a tot arreu. A la indústria de processos, per exemple, s'encarreguen de mantenir les variables d'interès aprop dels valors de consigna. Encara més, els sistemes de control han de garantir aquests objectius tot i la presència d'incertesa en el procés i l'existència de pertorbacions. En aquest sentit, la realimentació representa un mecanisme essencial alhora de millorar tant la qualitat com l'eficiència energètica en molts processos de fabricació. El tema cabdal d'aquesta tesi consisteix en el disseny analític de compensadors (també anomenats controladors) fent servir l'esquema convencial en realimentació unitària. El marc adoptat és del control lineal i invariant en el temps (LTI). Encara que la realitat és de naturalesa no lineal, la simplificació al cas lineal no suposa una restricció greu ja que, localment, sempre podem considerar l'aproximació lineal del procés sota control. Posteriorment, el rang d'operació del compensador es pot extendre fent servir algun procediment de control adaptatiu. Des del punt de vista del disseny del controlador, l'escenari considerat planteja, entre d’altres, dos compromisos fonamentals. D'una banda, el controlador haurà de sel·leccionar-se per tal d'assolir un bon balanç entre rendiment i robustesa de modelat. D'altra banda, existeix també un conflicte entre el rendiment tipus "regulatori" (rebuig de pertorbacions) i el rendiment tipus "servo" (seguiment de la consigna), essent de vegades convenient trobar-ne un equilibri entre aquests dos modes de funcionament. L'objectiu d'aquesta tesi és proporcionar procediments de disseny analítics basats en un model de la planta i els compromisos de robustesa/rendiment i servo/regulació. A diferència d'altres mètodes, els procediments presentats eximeixen el dissenyador d'haver de pensar pesos o models de referència adients. A més, els paràmetres de sintonia tenen un significat intuitiu per tal de simplificar l'ajustament dels paràmetres del controlador. Com que els controladors de tipus Proporcional-Integral-Derivatiu (PID) continuen sent els més emprats en la pràctica, s'ha considerat l'aplicació a aquest tipus particular de controlador. Per últim, val a dir que l'apropament analític d'aquesta tesi permet determinar, de manera explícita, com els diferents compromisos considerats afecten l'el·lecció final del controlador. Aquesta característica, creiem, és també valuosa des del punt de vista docent.<br>La idea de la realimentación negativa (o "feedback" en inglés), si bien sencilla, es extremadamente poderosa y ha tenido un gran impacto en la sociedad desde la revolución industrial. En la actualidad, los sistemas de control están en todas partes. En la industria de procesos, por ejemplo, son los encargados de mantener las variables de interés próximas a los valores de consigna, todo ello pese a la incerteza en el proceso y las perturbaciones externas. En este sentido, la realimentación es la única manera de estabilizar una planta inestable, y se presenta así como un mecanismo esencial en procesos de fabricación con el fin de mejorar la calidad del producto final y la eficiencia energética. El tema central de esta tesis es el diseño analítico de compensadores (también llamados controladores) en realimentación. El marco de control adoptado es del control lineal e invariante en el tiempo (LTI). Aunque la realidad raramente es de naturaleza lineal, la restricción al caso LTI obedece a su simplicidad y al hecho de que, localmente, es siempre posible aproximar un proceso no lineal por otro lineal. Desde este punto de vista, el rango de operación del compensador puede extenderse posteriormente mediante planificación de ganancia o control adaptable. Respecto a la configuración de control, esta tesis considera el esquema convencional en realimentación unitaria. En el escenario considerado, tenemos por un lado que el controlador debe diseñarse para proporcionar un buen compromiso entre el rendimiento y la robustez ante incerteza en el proceso. Por otro lado, también existe un conflicto entre el rendimiento tipo "servo" (seguimiento de la referencia o consigna) y el rendimiento tipo "regulatorio" (rechazo de las perturbaciones), siendo a veces deseable encontrar un equilibrio entre ambos modos de funcionamiento. El objetivo de esta tesis es proporcionar procedimientos de diseño analíticos basados en un modelo del proceso y los compromisos de robustez/rendimiento y servo/regulación. En los métodos propuestos no es necesario que el diseñador seleccione pesos o modelos de referencia como pasa con otros enfoques. Además, los parámetros de sintonía tienen un significado intuitivo con el fin de simplificar el ajuste de los parámetros del controlador. Debido a que los controladores de tipo Proporcional-Integral-Derivativo (PID) son ampliamente utilizados en la industria, se ha considerado la aplicación a este tipo de controladores. Por último, mencionar que el enfoque analítico de la tesis permite plasmar, de forma explícita, cómo los diferentes compromisos considerados influyen en la elección final del compensador. Esta característica es también valiosa desde el punto de vista de la docencia del control automático.<br>The concept of (negative) feedback, albeit simple, is extremely powerful, and has since the Industrial Revolution changed our world dramatically. Nowadays, control systems are everywhere. In process industry, for example, they keep the manipulated variables close to the set-points in spite of disturbances and changes in the plant. Moreover, feedback provides the only means to stabilize unstable processes. This way, the feedback mechanism reveals essential for improving product quality and energy efficiency, which yields better (sustainable) economy. The theme of this thesis is on analytical design of feedback compensators through linear control theory. The restriction to the Linear Time Invariant (LTI) case is not severe in the sense that most processes are well modeled locally by LTI systems. The operating range of the controller can then be extended using gain scheduling or adaptation. Within this work, the standard single-loop feedback configuration is assumed. Among the control objectives, stability and robustness are important considerations because of the presence of uncertainty in practice. Apart from that, the controller faces servo (set-point tracking) and regulation (disturbance rejection) objectives. In the considered scenario, it is well-known that there is an inherent compromise between robustness and performance. In general, the servo and regulation objectives are also conflicting and sometimes a balance is desirable. An example is in cascade configurations: the inner loop should be tuned based on tracking as it receives the set-points from the master loop. However, the inner loop may also need acceptable load disturbance suppression capabilities. Another good example is found in Model Predictive Control (MPC) applications due to frequent changes of set-points by the server. Finally, there may be a trade-off between the response to disturbances entering at the input and at the output of the plant, which can be understood as a servo/regulator trade-off too. The goal of this thesis is to provide model-based design procedures in terms of the Robustness/Performance and Servo/Regulator trade-offs, and give insight into how the tuning depends on the process parameters. In the presented methods, the designer is not required to choose weighting functions nor reference models as in other approaches, and the involved parameters have a clear meaning to facilitate the tuning process. Because PID controllers are prevalent in industry, application to PID tuning is considered most of the times. Although numerical methods for controller derivation may yield superior performance than analytical ones, the latter category has been preferred for several reasons. First, analytical procedures help understand the problem at hand. Second, when applied to low-order models, well-motivated tuning rules which are simple and easy to memorize can be obtained. These features are very desirable from the operator's point of view as well as for teaching purposes.
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Eriksson, Per. "Design and implementation of a servo system by Sensor Field Oriented Control of a BLDC motor." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-236875.

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A servo system intended to steer antennas on board ships is designed, built and tested. It uses a Brushless Direct Current (BLDC) motor with an encoder to keep track of its position, and Field Oriented Control (FOC) implemented on Toshibas microprocessor TMPM373 in order to control the current flowing to the motor. The servo system will be connected in cascade to another already existing servo system and controlled with two input signals. The first signal determines if the antenna axis should rotate clockwise or counter clockwise. The second signal is a stream of pulses, where each pulse means that the motor should move one encoder point. A printed circuit board is designed and built to complete these tasks. A proportional-integral regulator is used to control the position of the motor, using the position error as the controller input. The servo system is tested. The performance of the resulting servo system is sufficient to satisfy the required position error limit of 0.5 degrees. In order to reduce the periodic disturbances presented in the system in experiments, Iterative Learning Control (ILC) is implemented. It is shown that using ILC further decreases the position error.
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Nevole, Josef. "Dvouosý pohon s EC motory Maxon." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217619.

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The content of this master´s thesis is compact complex piece of knowledge from semestral projects 1 and 2. These semestral projects deal with analysis two-axle servo - drive, most common methods design regulators, design regulators and their simulation. Further was analysed quality regulation integral criteria, whereupon connect simulation circular and linear interpolation. Simulation was effected by force of Matlab Simulink. In one’s chapter was tested effect feedforwards to regulation. In closing parts is acquaint with control section position EPOS, and programming environment Open PCS company Maxon. In this environment was biaxial drive with EC motors Maxon and control section EPOS P 24/5 programmed. Results was discusseds with simulation.
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Abou-Zayed, Usama Rashed. "Advanced Control of Electomechanical Servo Systems." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492760.

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This thesis concerns the exploitation of the site isolation concept in cascade sequences that facilitate rapid construction of complex polycyclic molecules. Site isolation is the anchoring of mutually destructive reagents onto solid supports to prevent their mutual deactivation.
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Thomas, Michael Brian. "Advanced servo control of a pneumatic actuator." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1070373448.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xix, 222 p.; also includes graphics (some col.) Includes bibliographical references (p. 215-222). Available online via OhioLINK's ETD Center
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Gu, Jun. "Intelligent servo control of a robot excavator." Thesis, Lancaster University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423896.

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Hinton, Christopher Eric. "Control of servo-hydraulic materials-testing machines." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282326.

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李耀輝 and Yiu-fai Vincent Li. "Microprocessor based fuzzy control for servo system." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31209336.

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Li, Yiu-fai Vincent. "Microprocessor based fuzzy control for servo system /." [Hong Kong : University of Hong Kong], 1990. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12758036.

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Books on the topic "Servo and regulatory control"

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Nakamura, Masatoshi, Nobuhiro Kyura, and Satoru Goto, eds. Mechatronic Servo System Control. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/b95853.

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Faillot, J. L., ed. Vibration Control of Flexible Servo Mechanisms. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-77899-5.

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Firoozian, Riazollah. Servo Motors and Industrial Control Theory. Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-85460-1.

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Firoozian, Riazollah. Servo Motors and Industrial Control Theory. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07275-3.

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Firoozian, Riazollah. Servo Motors and Industrial Control Theory. Springer US, 2009.

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Faillot, J. L. Vibration Control of Flexible Servo Mechanisms. Springer Berlin Heidelberg, 1993.

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Kelmar, Laura. Manipulator servo level world modeling. U.S. Dept. of Commerce, National Institute of Standards and Technology, 1989.

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Industrial servo control systems: Fundamentals and applications. 2nd ed. Marcel Dekker, 2003.

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Industrial servo control systems: Fundamentals and applications. M. Dekker, 1996.

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Andreas, Kroll, ed. Hydraulic Servo-systems: Modelling, Identification and Control. Springer London, 2003.

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Book chapters on the topic "Servo and regulatory control"

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Varshney, Aarti, Puneet Mishra, and Vishal Goyal. "Analysis of Parallel Control Structure for Efficient Servo and Regulatory Actions." In Intelligent Communication and Computational Technologies. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5523-2_33.

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Jelali, Mohieddine, and Andreas Kroll. "Hydraulic Control Systems Design." In Hydraulic Servo-systems. Springer London, 2003. http://dx.doi.org/10.1007/978-1-4471-0099-7_6.

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Tan, Kok Kiong, and Andi Sudjana Putra. "Overview of Servo Control." In Drives and Control for Industrial Automation. Springer London, 2011. http://dx.doi.org/10.1007/978-1-84882-425-6_1.

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Hu, Guoqiang, Nicholas Gans, and Warren E. Dixon. "Adaptive Visual Servo Control." In Encyclopedia of Complexity and Systems Science. Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-30440-3_3.

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Hoskins, Alan, Mark Ayres, and Kevin Curtis. "Servo and Drive Control." In Holographic Data Storage. John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470666531.ch14.

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Chen, Ben M., Tong H. Lee, and Venkatakrishnan Venkataramanan. "Linear Control Techniques." In Hard Disk Drive Servo Systems. Springer London, 2002. http://dx.doi.org/10.1007/978-1-4471-3712-2_4.

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Chen, Ben M., Tong H. Lee, and Venkatakrishnan Venkataramanan. "Nonlinear Control Techniques." In Hard Disk Drive Servo Systems. Springer London, 2002. http://dx.doi.org/10.1007/978-1-4471-3712-2_5.

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Tan, Kok Kiong, and Andi Sudjana Putra. "Control System in Servo Drives." In Drives and Control for Industrial Automation. Springer London, 2011. http://dx.doi.org/10.1007/978-1-84882-425-6_5.

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Walȩcki, Michał, and Cezary Zieliński. "Prediction-Based Visual Servo Control." In Challenges in Automation, Robotics and Measurement Techniques. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29357-8_60.

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Camm, Marc, and Christopher Fox. "The Regulatory Environment." In Under Control. Apress, 2010. http://dx.doi.org/10.1007/978-1-4302-1593-6_9.

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Conference papers on the topic "Servo and regulatory control"

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Kumar V., Joshi, and Vinodh Kumar E. "Internal Model Control for Regulatory and Reference Tracking of Servo Motor." In 2019 Innovations in Power and Advanced Computing Technologies (i-PACT). IEEE, 2019. http://dx.doi.org/10.1109/i-pact44901.2019.8960195.

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Alfaro, V. M., R. Vilanova, V. Mendez, and J. Lafuente. "Performance/robustness tradeoff analysis of PI/PID servo and regulatory control systems." In 2010 IEEE International Conference on Industrial Technology (ICIT 2010). IEEE, 2010. http://dx.doi.org/10.1109/icit.2010.5472662.

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Alcantara, S., C. Pedret, R. Vilanova, and W. D. Zhang. "Unified Servo/Regulator design for robust PID tuning." In Control (MSC). IEEE, 2010. http://dx.doi.org/10.1109/cca.2010.5611203.

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Sun, Bo, Wei Zhang, Weidong Zhang, and Jiang Hong. "Optimal controller design based on synthesis servo/regulator performance criterion." In 2014 33rd Chinese Control Conference (CCC). IEEE, 2014. http://dx.doi.org/10.1109/chicc.2014.6895553.

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Li, Xiang, Zhenwei Wei, and Xiaoyu Zhang. "Research on robust servo-regulator used in inverse control of the inverted pendulum system." In 2010 2nd International Asia Conference on Informatics in Control, Automation and Robotics (CAR 2010). IEEE, 2010. http://dx.doi.org/10.1109/car.2010.5456672.

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Moradmand, P. Anahita, and Hamid Khaloozadeh. "An experimental study of modeling and self-tuning regulator design for an electro-hydro servo-system." In 2017 5th International Conference on Control, Instrumentation, and Automation (ICCIA). IEEE, 2017. http://dx.doi.org/10.1109/icciautom.2017.8258665.

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Nishimura, Hidekazu, Osamu Ohnuki, Kenzo Nonami, and Takayoshi Totani. "Stabilizing and Positioning Control of Inverted Flexible Pendulum by Means of H∞ Servo Control With Partial-State Feedback." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0614.

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Abstract In this study we formulate H∞ servo compensator where displacement signals are used as the controlled variables and their time derivatives are used as partial-state feedback signals for stabilizing and positioning control of a cart and inverted flexible pendulum system. The feedback loop of the part of the state variables except the controlled variables is added to the feedback loop of the controlled variables in the design of the H∞ compensator. Through this formulation the order of the designed compensator is reduced by the order of the weighting functions for the time derivative signals. By numerical calculations and experiments, we investigate the settling characteristics and the robust stability against a disturbance to the pendulum with two kinds of controllers, the output feedback controller by the displacement feedback and the output feedback controller adding the cart velocity feedback. It is shown that although the displacement-output feedback controller has a big overshoot in the step response and the positioning of the cart is difficult, by means of the partial-state feedback controller with a cart velocity feedback the overshoot can be reduced and stable positioning control of the cart is possible. Also it is verified that the servo compensator is superior to the regulator-based compensator in the settling characteristics.
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Kato, Tomonori, Tetsuma Hirakawa, Mitsuhiro Nakao, Takashi Oowaku, Hirohisa Sakuma, and Toshiharu Kagawa. "Feed-Forward Control of an Arbitrary Pressure Pulsation Generator and its Application to Testing an Orifice-Type Flow Meter." In ASME/BATH 2014 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fpmc2014-7858.

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This paper presents a compact arbitrary pressure pulsation generator for assessing the characteristics of flow meters and sensors, particularly around their zero points. In this study, a compact arbitrary pressure pulsation generator was created using some pneumatic components, such as a high-precision quick-response pneumatic pressure regulator (HPR) and a spool-type servo-valve. The feed-forward compensation of the controller provided the desired pressure pulse to the tested flow meter by controlling the spool-type servo valve; 30 Hz was achieved. In order to validate the effectiveness of the developed generator, we evaluated the dynamic characteristics around the zero point of an orifice-type flow meter in the range from 1 Hz through 30 Hz.
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Wu, Shuai, Richard Burton, Zongxia Jiao, Juntao Yu, and Rongjie Kang. "Feasibility Study on the Use of a Voice Coil Motor Direct Drive Flow Rate Control Valve." In ASME 2009 Dynamic Systems and Control Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/dscc2009-2631.

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This paper considers the feasibility of a new type of voice coil motor direct drive flow control servo valve. The proposed servo valve controls the flow rate using only a direct measurement of the spool position. A neural network is used to estimate the flow rate based on the spool position, velocity and coil current. The estimated flow rate is fed back to a closed loop controller. The feasibility of the concept is established using simulation techniques only at this point. All results are validated by computer co-simulation using AMESim and Simulink. A simulated model of a VCM-DDV (Voice Coil Motor-Direct Drive Valve) and hydraulic test circuit are built in an AMESim environment. A virtual digital controller is developed in a Simulink environment in which the feedback signals are received from the AMESim model; the controller outputs are sent to the VCM-DDV model in AMESim (by interfacing between these two simulation packages). A LQR (Linear Quadratic Regulator) state feedback and nonlinear compensator controller for spool position tracking is considered as this is the first step for flow control. A flow rate control loop is subsequently included via a neural network flow rate estimator. Simulation results show that this method could control the flow rate to an acceptable degree of precision, but only at low frequencies. This kind of valve can find usage in open loop hydraulic velocity control in many industrial applications.
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Borrás Pinilla, Carlos, José Luis Sarmiento, and Rubén Darío Guiza. "Modelling, System Identification and Position Control Based on LQR Formulation for an Electro-Hydraulic Servo System." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11505.

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Abstract This study presents the mathematical modelling, system identification using grey-box model estimation and position-tracking control for an electro-hydraulic servo system (EHSS) using four control strategies based on LQR formulation: Linear quadratic regulator (LQR) approach for servo systems, linear quadratic integral (LQI), linear quadratic tracking (LQT) and a variation of LQT named here LQTβ. First, the nonlinear model of the electro-hydraulic servo system was obtained using differential equations based on hydraulic theory and physical laws. The model was then linearized and its parameters were estimated using grey-box method when the open-loop system was excited with a chirp signal from 0 to 30 [Hz]. The estimated model was verified with experimental data of the open-loop system response for square wave and continuous step inputs of different amplitudes and frequencies. For the position-tracking four control strategies based on LQR formulation were proposed. The main difference among them is the conception of the cost function that is minimized: the LQR includes all the system’s states and the control signal, the LQI includes all system’s states, the tracking error and the control signal, the LQT includes only the tracking error and the LQTβ the tracking error and its derivative. The four control strategies were simulated in MATLAB Simulink and initially tuned using Bryson’s rule, then were implemented in the real system and finely tuned by trial and error until the best performance is achieved. They all were tested using step, square wave and sine wave inputs, and were analyzed in terms of settling time, rising time, peak time, overshoot margin, steady-state error, energy consumption and repeatability against a conventional PID controller. The experimental results showed better tracking, better repeatability and less energy consumption using the LQR based techniques than using the PID control, specifically the LQR and the LQTβ showed the fastest response and smallest steady-state error among the LQR based strategies. This study was carried out with the electro-hydraulic servo system (EHSS) of the seismic shaker table of the Dynamics and Structural Control Lab at Universidad Industrial de Santander. The seismic shaker table is composed of a Parker double rod dynamic hydraulic cylinder commanded by an MTS 252.24G-04 servo valve and powered by an MTS 505.11 hydraulic power unit. Cylinder’s position was measured using an integrated Trans-Teck LVDT. The control system was build and implemented in MATLAB Simulink using Quanser Q8-USB card.
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Reports on the topic "Servo and regulatory control"

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Chen, J., D. M. Dason, W. E. Dixon, and V. K. Chitrakaran. Navigation Function Based Visual Servo Control. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada465679.

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Bae, Dae-Yun, and David Dennis Mascarenas. Control of Delta Robot and Development of Servo Hook using Python Programming. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1242927.

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Kaneko, Yutaka, Kazutaka Adachi, Kimio Kanai, and Yoshimasa Ochi. Design of a Gear Ratio Servo Control System for Toroidal Continuously Variable Transmission. SAE International, 2005. http://dx.doi.org/10.4271/2005-08-0040.

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Chen, J., W. E. Dixon, D. M. Dawson, and V. K. Chitrakaran. Visual Servo Tracking Control of a Wheeled Mobile Robot with a Monocular Fixed Camera. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada465705.

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Tatlicioglu, Enver, Darren M. Dawson, and Bin Xian. Adaptive Visual Servo Regulation Control for Camera-in-Hand Configuration with a Fixed-Camera Extension. Defense Technical Information Center, 2007. http://dx.doi.org/10.21236/ada465581.

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Tomlin, C. J., J. D. Axelrod, and S. S. Sastry. Hybrid Control Models and Tools for Biological Regulatory Networks. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada460925.

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Abdel-Aziz, Waleed, and Linda Milkas. Regulatory Control of Breast Tumor Cell Poly (ADP-Ribose) Polymerase. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada435540.

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Han, Suhua, and Linda Malkas. Regulatory Control of Breast Tumor Cell Poly (ADP-Ribose) Polymerase. Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada396830.

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Cosgrove, D. (Rapid regulatory control of plant cell expansion and wall relaxation). Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/5080397.

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Abdel-Aziz, Waleed, and Linda Milkas. Regulatory Control of Breast Tumor Cell Poly (ADP-Ribose) Polymerase. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada410880.

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