This paper puts forward a new method for solving hysteresis loop and stick-slip Phenomenon in large torque, high load and low speed conditions, i. e. PWMtype NC proportional directional control.

本文针对大惯量、大负荷、低速工况的滞环及爬行现象，提出了一种新型的解决方法——脉宽调制（PWM）型数控比例方向阀控制。

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And also puts forward improving measures for reducing hydraulic loss in suction piping and installing low speed prime pump in suction system.

在合理确定吸入系统的装置方面，提出了减少吸入管路的水力损失和在吸入系统安装低速前置泵的改进措施。

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A high pressurized design method of slipper pairs of a new type camshaft connecting-rod low speed high torque motor was put forward.

介绍了一种采用静压支承的曲轴连杆式低速大转矩液压马达滑靴副的高压化设计方法。

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