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

Volume

2

fYear

2010

fDate

11-12 May 2010

Firstpage

935

Lastpage

938

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICICTA.2010.322

Filename

5522774