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.
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.
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.
两个发动机驱动的电控液压泵（排量可变），四个大型和四个小型的液压控制马达（排量可变）。
The systems comprise two engine-driven, electrically controlled, variable displacement hydraulic pumps and four large and four small hydraulically controlled, variable displacement hydraulic motors.
第一章介绍了微机械电子系统这一大背景的研究现状，分析了电水动力驱动的微泵、微马达研究现状，阐明了电水动力微马达的研究目标及研究内容。
In chapter 1, the back ground of MEMS was introduced, and research status of micro pumps and micro motors was analyzed, and the targets and contents of our work were described.
第一章介绍了微机械电子系统这一大背景的研究现状，分析了电水动力驱动的微泵、微马达研究现状，阐明了电水动力微马达的研究目标及研究内容。
In chapter 1, the back ground of MEMS was introduced, and research status of micro pumps and micro motors was analyzed, and the targets and contents of our work were described.
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