... step-down transformer 降压变压器 stepless speed control 无级调速 stepped grate （立窑的）塔式（卸料）篦子 ...
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The machine is controlled by PLC program. Frequency stepless speed control. Electrical parts are imported.
整机由程序控制，变频器无级调速，电器控制部分采用进口元器件。
The analysis on the simulation results in stepless speed regulating system of automotive air-conditioning fan shows that the fuzzy PI control is better than the conventional PI control.
通过对汽车空调风机的无级调速系统仿真结果的分析，表明模糊pi控制优于传统的PI控制，证明了该无级调速系统仿真模型的正确性。
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。
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