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引言应用电液伺服机械的早期,航空工业曾是这些发展的推动力。液压伺服驱动及执行器用在自动驾驶仪和增稳系统上,亦用于现代飞机的遥控自动驾驶系统上。近15年来,液压伺服元件又日益广泛地用于机床、加工工业和试验机等。电液伺服机构给出输入与输出间的比例关系和其他预定的关系,特别强调精度和响应,从而消除干扰的影响。输入和输出以及各级所处理的信号均是模拟量。这种机构在尺寸、功率与重量比、对驱动系统的适应性、响应、精度、维修性及其他方面几乎能满足所有的技术要求。
Introduction The early days of the application of electro-hydraulic servo machinery were the driving forces behind these developments. Hydraulic servo drives and actuators are used in autopilots and stabilizing systems as well as in remotely piloted autopilot systems for modern aircraft. Nearly 15 years, hydraulic servo components are increasingly used in machine tools, processing industries and testing machines. The electro-hydraulic servo gives a proportional relationship between input and output and other predetermined relationships with special emphasis on accuracy and response, eliminating the effects of interference. Inputs and outputs, as well as signals processed at all levels, are analog. Such a mechanism meets almost all of the technical requirements in terms of size, power and weight ratio, adaptability, responsiveness, accuracy, maintainability and other aspects of the drive system.