关键词: 电液位置伺服系统, 振动抑制, 轨迹跟踪, 模糊控制

Abstract:

This paper presented an investigation into development of trajectory planning strategies for an electro-hydraulic position servo system with a flexible load;the final aim was to eliminate the residual vibration of the flexible load.The motion trajectory was obtained by superimposing cubic polynomials onto a ramp,
a cycloid,and a simple harmonic function.The coefficients of the equations were determined by initial and final conditions of rigid load movement and the constraint condition that the free vibration amplitude of flexible load was zero.A fuzzy controlling strategy was used to the electro-hydraulic system for tracking presented desired optimizing trajectory.The numerical simulations were carried out to demonstrate the control performance of the proposed approach. 

Key words: electro-hydraulic position system, vibration reduction, trajectory planning, fuzzy control