Low frequency angle vibration table

Abstract

An angular vibration table of low frequency is prepared as using control system to control mechanical vibration table to generate sine vibration according to property of calibrated transducer, sending one path of grating output signal to control system for carrying out closed loop control and another path to data collection system being used to simultaneously collect output signals of grating and calibrated transducer, obtaining relation curve of time and movement amount after said signals are processed by data processing unit then calculating out phase-shift and magnitude sensitivity of calibrated transducer.

Description

technical field [0001] The invention relates to a low-frequency angular vibrating table used for calibrating a motion parameter sensor. Background technique [0002] The motion parameter sensor needs to be calibrated before measurement, and the linear vibration standard and angular vibration standard are used to calibrate the above sensor. There are mainly two methods for tracing the motion parameters in calibration. One is the absolute method, which uses laser interferometry to trace the motion parameters to time, length or angle, with high accuracy; the other is the comparative method, which uses calibrated The standard sensor measures the motion value, which has the advantages of low cost and simple method, but the accuracy is low. The specific method can refer to the article "Measurement (Measurement) 2000 Volume 28" "Laser Interferometry Vibration and Shock Measurement Traceability" (H.-J.v.Martens, A.Tubner, W.Wabinski, A.Link, H.-J. Schlaak, "Traceability of vibrat...

AI Technical Summary

Problems solved by technology

The measurement accuracy and resolution are low, and the frequency response range is narrow, which cannot meet the needs

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