Abstract: this paper mainly on small sized excavator hydraulic system design is discussed in this paper.
摘要：本文主要对小型挖掘机液压系统的设计进行了阐述。
This paper provided a remote fault diagnosis system for excavator hydraulic system based on network and virtual instrument technology.
研究了挖掘机液压系统远程故障诊断的实现技术；提出了基于虚拟仪器的故障诊断系统的网络化实现方案。
It has been proved in experiments that these methods not only improve the efficiency of the hydraulic system, but also the controllability of excavator.
试验证明，这些措施的采用，不仅提高了液压系统效率，而且使挖掘机的操纵性得到明显提高。
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