Title :
Principle of Weight Dynamic Change Fuzzy-PID Integrated Control for the Displacement Ratio of Multi-range HMCVT
Author :
Mingzhu, Zhang ; Zhili, Zhou ; Liyou, Xu
Author_Institution :
Sch. of Mechatron. Eng., Henan Univ. of Sci. & Technol., Luoyang, China
Abstract :
A weight dynamic change fuzzy-PID integrated control principle for the displacement ratio of multi-range hydro-mechanical continuously variable transmission (HMCVT) is presented, which enhances the control precision of transmission ratio by improves the dynamic characteristics of displacement ratio of variable pump-motor system. The weight dynamic change Fuzzy-PID integrated controller automatically adjusts the weight value according to the error of displacement ratio. When the error is larger, the fuzzy control is strengthened to improve the response speed; when the error is smaller, the PID control is strengthened to decrease the steady-state error. Bench test showed that this control method can improve the rapidity and accuracy, decrease dynamic tracking error for the control of transmission ratio of HMCVT.
Keywords :
fuzzy control; nonlinear control systems; power transmission (mechanical); pumps; three-term control; weight control; bench testing; control precision; displacement ratio error; dynamic tracking error; hydromechanical continuously variable transmission; multirange HMCVT; steady state error; variable pump-motor system; weight dynamic change fuzzy-PID integrated control; Automatic control; Centralized control; Control systems; Displacement control; Error correction; Fuzzy control; Mechanical power transmission; Steady-state; Testing; Three-term control; Fuzzy control; PID control; displacement ratio; hydro-mechanical CVT; integrated controller;
Conference_Titel :
Intelligent Computation Technology and Automation (ICICTA), 2010 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-4244-7279-6
Electronic_ISBN :
978-1-4244-7280-2
DOI :
10.1109/ICICTA.2010.322
