The open loop time constant of the main generator influence the overshooting evidently. The important factor is the rising speed of the output DC voltage.
主发电机的开环时间常数会对建压过冲产生影响，而输出直流电压的上升速度也是一个重要因素。
At the same time, constant engine speed stabilizes output displacement of hydraulic pump and then stabilizes travel speed and vibratory frequency in turn, so that compaction quality is increased.
同时，发动机转速的恒定也使液压泵输出排量稳定，进而保证了行走速度和振动频率的稳定，提高了压实质量。
At the same time, constant power control of flow compensating feedback is adopted in the design of control circuit. Work principle and output characteristics of the system are analyzed.
同时在控制电路设计上引入流量补偿反馈的恒功率控制，并分析了系统的工作原理及输出特性。
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