全自动液压伺服压力机控制系统的研制

本文针对某一型号砂轮压机的性能要求，对其电液伺服控制系统进行了设计。为使系统具有动态相应快、稳态精度高的特点，采用混合型模糊PID控制器。当系统的偏差较大时，采用模糊控制，加快系统的响应过程，当系统的偏差小于某一值时，在模糊控制的基础上加入积分控制保证系统的精度。实测结果表明，本文所采用的控制方式完全能够满足砂轮压机的要求。

Design of Hydraulic Servo System in Hydraulic Presser

This paper presents a kind of control method of hydraulic servo system in hydraulic presser according to its demands for the hydraulic servo system. A hybrid controller via fuzzy control and local PI control is used in this paper. When the deviation between input and output is larger, fuzzy controller is alone used to speed up the dynamic process. The PI controller is then added in order to achieve high accuracy when the deviation is smaller than a given value. The experiment results show that the proposed approach is suitable for the control of the electrohydraulic servosystem in presser.