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讨论了液压挖掘机工作装置的比例阀控制方法，通过采用比例阀，可实现挖掘过程的振动切削。对于平整场地及高精度作业，可实现自动化控制。
The control method of proportional valve of working device of hydraulic excavator is discussed. Vibration cutting of excavation process can be realized by using proportional valve. For the formation of high-precision site operations and can achieve automation and control.