同步发电机整流带反电动势负载时，当系统参数不匹配，在一定工况下，可能出现低频振荡。
For some operating conditions, a synchronous generator with a rectifier and back-EMF load maybe exhibit low-frequency oscillations when the system parameters do not match.
分析表明，由于连接电缆两端产生的反射现象导致SPD和负载上的电压振荡。
The reflection phenomena on the cables between an external SPD and the protected equipment lead to the oscillations of the voltages on the SPD and on the load.
输入整形技术采用频域的零点配置方法设计多峰鲁棒输入整形器用来进一步减小负载的瞬时振荡，保障安全作业；
The transient vibration is reduced further for safety problems by the input shaping technique which utilizes zero placement method in the frequency domain to design multi-hump robust input shapers.
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