摘 要本文详尽阐述了电液比例控制系统构成、分类和特点，结合对液压伺服控制系统的控制结构及其特点和基本要求的论述，分析了两种控制系统目前的发展状况。回顾电液控制系统发展历史，展望电液控制系统的发展趋势。关键词：比例控制 伺服控制 发展趋势Abstract The paper expounded the composition, classification and the characteristics of the electro-hydraulic proportional control system. Combined with the discussion of the control structure, basic requirements and the characteristics of hydraulic servo control system, the paper analyzed the state of the development of the two kinds of control systems. Rev
