抄録
Adaptive feedforward control, self-organizing fuzzy control and proportional control are comparatively implemented to a 3-axial electrohydraulic control system. Its typical implementations include 3-axial vibrating system and space-tracking system. Although parameters of this system are time-variant and space dependent, adaptive feedforward control and self-organizing fuzzy control have the capabilities of on-line modifying the control law, and they have similar robustness. Proportional control requires plenty of trial and error to determine optimal gains. Experimental results indicate that adaptive feedforward control has excellent tracking performance and almost no phase lag. Proportional control and self-organizing fuzzy control have similar magnitude response ; however, proportional control has serious phase lags problem, which degrade the tracking performance.
