The winch adopted valve-controlled proportional speed regulation hydraulic drive and PLC control to realize stepless speed change of the winch drum and coordinating control of the cable layer.
管线绞车采用阀控比例调速液压驱动、LC控制，实现了卷筒的无级变速和排缆器的协调控制。
2
The controller is applied to the overheat steam temperature system of drum boiler. The validity, the high-speed and the robustness of the control system are demonstrated by simulation results.