Results 191 to 200 of about 10,681 (234)
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Modelling of an electro-hydraulic servo-system
2023Many theoretical models have been developed to simulate the performance of hydraulic Control components and systems, but all are limited by the assumptions involved and uncertain factors associated with practical hydraulic systems. Authors warn that seal compressibility, inertia of oil in lines, mounting compliance, structural damping, friction and ...
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Iterative Learning Control of Double Servo Valve Controlled Electro Hydraulic Servo System
2011 Seventh International Conference on Computational Intelligence and Security, 2011Aimed at electro-hydraulic servo force control system, according to the nonlinear of electric-hydraulic servo valve, to improve the speed of equivalent valve response, we propose the double electric-hydraulic servo valve parallel control, and two servo valve are controlled by their respective controller, the same signal inputs two controller, every ...
Yu Shaojuan, Song Junjun
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Electro-Hydraulic Servo Loading System for the Pumping Unit
Applied Mechanics and Materials, 2015Loading system of pumping unit simulates the working condition of pumping unit. It can repeat all kind of the real force and motion on pumping unit and detect the quality of pumping unit. Through analyzing the indicator diagram of pumping unit, we design a elecro-hydraulic servo loading system of pumping unit which uses the method of displacement and ...
Li Ping Xu, Song Yao
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Output feedback tracking control of electro-hydraulic servo systems
Proceedings of 35th IEEE Conference on Decision and Control, 2002This paper presents a model-free robust/adaptive control scheme for tracking control of electrohydraulic servo systems using output feedback only. The Taylor expansion theory is used to enable the proposed controller to identify and feedback linearize the dynamics of a system online, and to compensate parameter variation and various disturbances in ...
null Zhenying Zhao, null Lilong Cai
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Research of Electro-hydraulic Servo System Model and Reduction
2010 International Conference on Electrical and Control Engineering, 2010In this paper it sets up the mathematical model of electro-hydraulic servo control system, and analyses it by MATLAB, then gives a model reduction method and use it to reduce the mathematical model, and compares the responses of step signal of the two systems. At last we prove that this reduction method is available and it has some advantages.
Jing Binghua, Song Liwu, Zhou Qingguo
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Fuzzy internal model control for electro-hydraulic servo systems
2008 27th Chinese Control Conference, 2008Electro-hydraulic servo systems have been frequently used in the position servo system in industry and other relative field, because of their high power capability, fast response characteristics and good positioning capability. Hydraulic servo systems, however, inherently have many uncertainties, time varying and highly nonlinear characteristics due to
null Li Hong, null Xiong Shibo
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Parameter-dependent controller design for electro-hydraulic servo system
2010 International Conference on Intelligent Control and Information Processing, 2010This paper is concerned with the problem of robust controller design for electro-hydraulic servo systems driven by double-rod hydraulic actuators. Firstly, by introducing a linear varying parameter, an electro hydraulic servo system is described as a linear parameter varying(LPV) model.
Falu Weng, Weijie Mao, Bo Liang
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Iterative learning control of electro-hydraulic position servo system
2012 International Conference on Systems and Informatics (ICSAI2012), 2012This paper designed a feedback-feedforward iterative learning controller aim at the model of flight simulator six degrees of freedom motion platform, the controller combined iterative learning control arithmetic with traditional PID control arithmetic, the feedforward part of which was used to improve control precision and the feedback part was used to
Yongliang Wang +3 more
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Adaptive Control of the Electro‐Hydraulic Servo‐System with External Disturbances
Asian Journal of Control, 2012AbstractThe paper deals with the structure of the adaptive control electro‐hydraulic servo‐system (EHSS) with external load disturbances, practical verification of the identification, and control algorithms. The electro‐hydraulic servo system composed of a servo‐cylinder controlled with a servo‐valve is discussed. It is a strongly nonlinear object with
Wos, Piotr, Dindorf, Ryszard
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Robust Control of Electro-Hydraulic Servo System
2022 International Conference Automatics and Informatics (ICAI), 2022Georgi Mihalev +4 more
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