TY - GEN
T1 - On application of proportional valve-controlled hydraulic cylinder position servo system
AU - Liu, Fei
AU - Peng, Xiwei
N1 - Publisher Copyright:
© 2015 Technical Committee on Control Theory, Chinese Association of Automation.
PY - 2015/9/11
Y1 - 2015/9/11
N2 - Proportional valve-controlled hydraulic cylinder position servo system is a nonlinear, time-varying system which has a variable flow dead zone and flow gain. Using traditional control strategy is difficult to achieve satisfactory control effect. The self-regulating dynamic compensation method of dead zone has been raised to abate the hysteresis effect caused by the dead zone of electro-hydraulic proportional valve. At the same time, self-adapting fuzzy-PD control strategy has been put forward to solve the problem of variable flow gain. Finally, the track effects on sinusoidal signals were compared between self-adapting fuzzy-PD control system and PD control system through experiments in the case of different frequencies and loads. The results show that self-adapting fuzzy-PD controller can solve the contradictions between the speed and stability that the PD controller can't do, while improving tracking precision by the use of self-regulating dynamic compensation method.
AB - Proportional valve-controlled hydraulic cylinder position servo system is a nonlinear, time-varying system which has a variable flow dead zone and flow gain. Using traditional control strategy is difficult to achieve satisfactory control effect. The self-regulating dynamic compensation method of dead zone has been raised to abate the hysteresis effect caused by the dead zone of electro-hydraulic proportional valve. At the same time, self-adapting fuzzy-PD control strategy has been put forward to solve the problem of variable flow gain. Finally, the track effects on sinusoidal signals were compared between self-adapting fuzzy-PD control system and PD control system through experiments in the case of different frequencies and loads. The results show that self-adapting fuzzy-PD controller can solve the contradictions between the speed and stability that the PD controller can't do, while improving tracking precision by the use of self-regulating dynamic compensation method.
KW - Position servo
KW - Proportional valve controlled hydraulic cylinder
KW - Self-adapting fuzzy-PD
KW - Self-regulating dynamic compensation
KW - Sinusoidal trajectory tracking
UR - http://www.scopus.com/inward/record.url?scp=84946573066&partnerID=8YFLogxK
U2 - 10.1109/ChiCC.2015.7260202
DO - 10.1109/ChiCC.2015.7260202
M3 - Conference contribution
AN - SCOPUS:84946573066
T3 - Chinese Control Conference, CCC
SP - 3642
EP - 3647
BT - Proceedings of the 34th Chinese Control Conference, CCC 2015
A2 - Zhao, Qianchuan
A2 - Liu, Shirong
PB - IEEE Computer Society
T2 - 34th Chinese Control Conference, CCC 2015
Y2 - 28 July 2015 through 30 July 2015
ER -