Design of a hydraulic cylinder test rig, designed their controlsystem.
设计了一台液压缸试验台，设计了其控制系统。
2
Based on an analysis of the composition of drilling rig, characteristics of drilling process, and human features, a reliability model of man-machine controlsystem for drilling process is established.
在全面分析钻井机械的组成、钻进过程的特点和人的特性的基础上，建立钻机钻进过程人机系统可靠性模型。
3
Hu Zhijian. Research on Load Self-adaptive Hydraulic ControlSystemof Drill Rig [d]. Changchun: Jilin University, 2007.