液压伺服系统热特性研究综述

Review on Thermal Characteristics of Hydraulic Servo Systems

液压伺服系统具有响应速度快、负载刚度大、功率体积比大的优点,然而液压伺服系统对温度变化较为敏感,温度的升高会使泄漏量增大,导致液压伺服系统性能降低,影响着伺服系统元件的使用寿命。液压伺服系统的发热机理及热特性建模的理论研究,对于相应的温度控制措施的使用具有重要的理论指导意义。综述了近年来国内外有关液压伺服系统发热机理、热特性建模及仿真方法、降温措施等方面的研究方法和成果。

Hydraulic servo systems have the advantages of fast response, high load rigidity and output power. However,the leakage of the hydraulic servo system increases significantly with the increasing of the temperature, and it has an adverse effect on the performance of hydraulic servo systems and the longevity of hydraulic components. Theoretical researches on heating mechanism and thermal modelling of hydraulic servo systems will lay a foundation for the application of related measures in their temperature control. This paper reviews the research methods and results on heating mechanism, modelling and simulation and temperature control methods of hydraulic servo systems at home and abroad in recent years.