拾振器的恒流校准技术与恒压校准技术对比研究

Comparative Study on Constant Current Calibration Technology and Constant Voltage Calibration Technology of Vibration Pickup

阐述了一种基于恒流激励的拾振器校准技术,在此理论基础上,构架了一套利用恒流源校准拾振器的理论系统,并着重分析了校准无源伺服反馈的拾振器时的系统特点和原理。此外,还构建了采用恒流方式与恒压方式激励系统模型,分析两种方法校准误差产生的原因及误差模型,得出了恒流激励校准技术更适用的结论。

This paper describes a calibration technology of vibration pick-up based on constant current excitation.On the basis of this theory,a theoretical system of calibrating vibration pick-up using constant current source is constructed,and the system characteristics and principle of calibrating passive servo feedback vibration pick-up are emphatically analyzed.In addition,the excitation system models of constant current and constant voltage are constructed,and the causes and error models of the calibration errors of the two methods are analyzed.It is concluded that the constant current excitation calibration technology is more suitable.