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通过交流变频调速改变电机的转速来调节液压泵的输出流量．控制液压执行元件的运动速度。分析研究这一新的容积调速回路的优越性和可行性。
Through the exchange of variable frequency speed control motor speed to adjust the output of the hydraulic pump flow. Control the hydraulic actuator speed. Analyze the superiority and feasibility of this new volumetric speed control loop.