工作在低温环境的液压伺服系统的控制器应具有自适应特征。本文通过对阀控非对称液压缸建模,给出了自适应PID调节器对控制参数调节模式。系统可以根据外部环境的变化改变控制策略,以达到改善系统在恶劣环境中工作性能的目的。 The controller of a hydraulic servo system that operates in a cryogenic environment should have an adaptive feature. In this paper, valve-controlled asymmetric hydraulic cylinder modeling, adaptive PID regulator is given on the control parameter adjustment mode. The system can change the control strategy according to the change of the external environment so as to achieve the goal of improving the system performance in the harsh environment.