分析了在直接频率调制下，激光二极管中的光反馈效应，探讨了振动微小位移和速度的理论模型。
By analyzing the direct frequency modulation and optical feedback effect of laser diode, a theoretical model for measuring small vibration displacement and velocity is discussed.
在数控机床测控系统中， 反馈位移和速度的检测元件通常易发生故障。
The speed and place of the feedback have been breakdown frequently while checking components are used in numerically-controlled machine .
建议低速磁浮车辆采用磁铁横向错位布置和横向位移与速度反馈主动导向方式。
It is suggested that the low-speed maglev vehicle should adopt the lateral-offset magnets and the active guidance mode using the lateral displacement and velocity feedback.
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