HYDRAULIC SERVO control SYSTEM

Zou Jun  Fu Xin  Yang Huayong

(State Key Laboratory of Fluid Power Transmission and Control, ZhejiangUniversity, Hangzhou 310027)

Zhang Jianmin

(Bao Steel Technology Center, Shanghai 201901)

Abstract: The immune response, whose self-conditioned characteristic can be referred by controller design, is an important method to maintain the immune balance inside body. Based on immune feedback and classical PID controlling theory, an immune PID controller, using adaline network as antibody-suppressed function to improve the self-adapting capability, is developed. The good performance of immune PID is verified by the application of hydraulic edger screwdown system in Baosteel 2050 rough mill. The results show that the immune PID controller achieves better performance than the classic one, especially, in the circumstance of foreign disturbance and working condition variation.

Key words: Immune PID controller  Hydraulic servo system  Hot rolling  Hydraulic edger screwdown

CLC No: TH137
国家自然科学基金资助项目(50175097). Received 20040330, received in revised form 20040828