因此对工程机械行走驱动泵控马达闭式回路系统及关键液压元件开展研究将有重大意义。

Therefore the research of pump-control-motor closed-circuit for mobile hydraulics driving system and key hydraulic components will have great significance.

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工程车辆液压驱动系统由发动机、液压泵、液压马达、行走机构组成，这四个部分之间相互联系和影响。

Construction vehicle's hydraulic pressure drive system is composed of diesel, hydraulic pump, hydraulic motor and working system, they interact each other.

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如果压缩机(12)或真空泵(10)非常强烈地振动，那么因此能够简单地修改驱动马达(14)的转动频率以防止共振效应。

If the compressor (12) or the vacuum pump (10) vibrate too strongly, the rotative frequency of the drive motor (14) can thus be simply modified to prevent resonance effects.

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