DocumentCode :
3156933
Title :
Fuzzy PID control for direct drive electro-hydraulic position servo system
Author :
Lin-ke, Yu ; Jian-ming, Zheng ; Qi-long, Yuan ; Ji-ming, Xiao ; Yan, Li
Author_Institution :
Sch. of Mech. & Precision Instrum. Eng., Xi´´an Univ. of Technol., Xi´´an, China
fYear :
2011
fDate :
16-18 April 2011
Firstpage :
370
Lastpage :
373
Abstract :
In considering the saturation and dead zone nonlinearity as well as the time-variability and the time lag existed in direct drive volume control system, the traditional PID controller has the problems of parameter tuning difficulty and poor adaptability. This paper sets up a fuzzy PID control algorithm by pulling in fuzzy control theory, which realizes self-tuning PID parameters and effectively weaken the system saturation, dead zone, the time delay and other disadvantages, the accuracy and stability of hydraulic position servo system are improved. The unit step, square wave and cosine input signals are simulated with PID control and fuzzy PID control. The results show that: compared with the traditional PID control, fuzzy PID control that uses the strategy of adaptive PID control parameters, which effectively reduced the impact of dead zone serious nonlinear and time delay. Response speed, control accuracy and robust capability of the system have been greatly improved.
Keywords :
adaptive control; control nonlinearities; delays; electrohydraulic control equipment; fuzzy control; hydraulic drives; nonlinear control systems; position control; self-adjusting systems; servomechanisms; stability; three-term control; time-varying systems; volume control; adaptive PID control; cosine input signal; dead zone nonlinearity; direct drive electrohydraulic position servo system; direct drive volume control system; fuzzy PID control; hydraulic position servo system stability; self-tuning PID parameter; square wave signal; time delay; time lag; time-variability; unit step signal; Accuracy; Pistons; Reluctance motors; Servomotors; Valves; Direct drive electro-hydraulic position servo system; Fuzzy PID control; PID control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on
Conference_Location :
XianNing
Print_ISBN :
978-1-61284-458-9
Type :
conf
DOI :
10.1109/CECNET.2011.5768670
Filename :
5768670
Link To Document :
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