【摘要】 变转速液压容积调速系统是一种新型容积调速回路,所采用的控制结构有四种:恒压频比(U/f)开环控制、矢量小闭环控制、负载压力补偿控制和速度大闭环反馈补偿控制。本文简述了这四种控制结构,并针对大惯性变转速液压容积调速系统的特点,提出了三种新的复合补偿控制结构:反馈与负载前馈相结合的复合补偿控制结构、反馈与输入前馈相结合的复合补偿控制结构、反馈与输入前馈和负载前馈相结合的复合补偿控制结构,对于提高大惯性变转速液压容积调速系统的控制特性具有较大意义。更多还原

【Abstract】 Four control structures,constant voltage-frequency ratio ( U/f ) open loop control, vector closed loop control,load pressure compensation control and speed feedback compensation control,were summarized.To the great inertia variable rotational speed hydraulic system,three new compounded compensation control structures,feedback combined with load feedforward,feedback combined with input feedforward,feedback combined with load feedward and input feedforward were put forward.These compounded compensation control can enhance the control characteristics of the great inertia variable rotational speed hydraulic system.更多还原