振动打桩机, 复合式同步控制策略, 模糊PID控制, 单片机

To improve the efficiency of pile driving and achieve stepless frequency and torque online regulation, a scheme of synchronized control was used in the control of vibratory pile drivers. In view of nonlinear and time varying characteristics of the electro-hydraulic servo system, an intelligent synchronized control system with fuzzy PID parameters was developed, taking calculational advantages of single-chip microcomputer（SCM） and compromising composite synchronization control scheme and fuzzy control theories. Experimental results indicate that the fuzzy PID controller can improve the dynamic characteristics and its control effect is better than that of conventional PID controller.