Design of pressure control system for grinding machine of precision ball

ZHAO Wenhong, LOU Yibing, ZHAO Rong, YANG Bibo
(Ministry of Education & Zhejiang Province Key Laboratory of E&M,
Zhejiang University of Technology, Hangzhou 310014, China)

Abstract: In order to solve the problems that based on the traditional adaptive pressure control system and PID theory in eccentric and dualrotation lapping machine for precision ball, such as long response time, low control accuracy, large system vibration, etc., the fuzzy control strategy was investigated. After the analysis of blurring input variables(E,EC)and output variable(SV), the relationship of three variables was established. A method of fuzzy pressure control system was presented based on DSP chip. The fuzzy control system was evaluated on the Simulink platform of Matlab, the lapping machine for precision ball with fuzzy control system was tested. The experimental results show that the design can shorten response time, reduce system vibration and improve control accuracy and machine efficiency.
Key words: system design; fuzzy control; Simulink