对于输入信号光和直流光功率，存在一个最佳功率值，使得波长转换的Q值最高。
There is an optimal value for pump signal power which can achieve the maximum Q value of wavelength conversion.
在此基础上，根据电梯起停频繁的特点，利用直流母线电压变化率推导出起动时刻理想初始参数和在输入功率变化时的前馈调节量，提高了系统的快速性。
On this foundation, in view of features that the elevator starts and stops frequently, the ideal starting time parameter and the value of feed forward adjustment when input power .
依据输入滤波器输出阻抗极大值最小原则对基于阻尼补偿的直流发电机带恒功率负载系统输入滤波器参数进行了最优设计，给出了设计方法和流程。
Optimal design for input filter parameters in the system is accomplished to obtain the minimization of peak output impedance, and the design process is discussed in detail.
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