Title :
Research on the control scheme of direct drive electro-hydraulic position servo system
Author :
Geqiang Li ; Hanjie Wang ; Xiaodong Huang ; Hongyan Yang
Author_Institution :
Sch. of Mechatron. Eng., Henan Univ. of Sci. & Technol., Luoyang, China
Abstract :
A compound control scheme that is easy to realize and effective to project was put forward to control direct drive electro-hydraulic position servo system. Using differential feed forward control increases response of the system,. Using the pressure feedback improves damping ratio of the system. Using PID control in frontal channel, the control method restrains parameter time-variance and model uncertainty. The simulation and experiment showed this compound control scheme can effectively improve the system dynamic performance, prove the amplitude-phase tracking accuracy, widen the bandwidth.
Keywords :
electrohydraulic control equipment; feedback; feedforward; position control; servomechanisms; three-term control; PID control; amplitude-phase tracking accuracy; compound control scheme; damping ratio; differential feedforward control; direct drive electrohydraulic position servo system control; frontal channel; model uncertainty; parameter time-variance; pressure feedback; system dynamic performance; Cavity resonators; Damping; Equations; Mathematical model; Servomotors; Valves; Compound control scheme; Direct drive; Dynamic performance; Electro-hydraulic position servo system;
Conference_Titel :
Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on
Conference_Location :
Harbin, Heilongjiang, China
Print_ISBN :
978-1-61284-087-1
DOI :
10.1109/EMEIT.2011.6023771
