Relative velocity feedback is a method that is used to improve the low-frequency characteristics of a standard vibration table. Under limited mechanical conditions, the distortion of the low-frequency band of the vibration table is greatly reduced by using relative velocity feedback. However, there is a resonance peak in the passband of the vibration table system. When the resonance peak is too large, the vibration table generates a self-excited oscillation, which affects the expansion of the frequency characteristics of the vibration table. This paper presents a simplified circuit model and theoretical derivation for such vibration table. The relationship between the resonance peak and the parts of vibration table is given by theoretical derivation and verified by a simulation and an experiment. Then, a method for reducing the resonance peak is also provided and verified.

相对速度反馈是一种用于改善标准振动台的低频特性的方法。在有限的机械条件下，通过使用相对速度反馈可以大大降低振动台低频频带的失真。但是，振动台系统的通带中有一个共振峰。当共振峰太大时，振动台会产生自激振荡，这会影响振动台频率特性的扩展。本文给出了这种振动台的简化电路模型和理论推导。通过理论推导给出共振峰与振动台部分之间的关​​系，并通过仿真和实验进行验证。然后，