Detection apparatus and method for swing frequency error and swing zeroing error of rotary table

Abstract

The invention relates to a detection apparatus and method for the swing frequency error and swing zeroing error of a rotary table, belonging to the technical field of testing of inertial devices. According to the invention, magnetic steel is fixedly mounted on a detected rotation frame or side end face of the rotary table; a Hall sensor and a processing circuit are fixedly arranged on an immovable foundation; once the magnetic steel faces an induction surface of the Hall sensor, a TTL level induction signal is generated; a rotary-table calibrating device acquires TTL level induction signals and calculates the cycle length of adjacent TTL level induction signals so as to obtain the error of the swing frequency of the rotary table; a digital level meter is arranged on the reference surface of the detected frame of the rotary table; a photoelectric autocollimator collimates the center of a reflective mirror on the rotary table; and the digital level meter and the photoelectric autocollimator test the states of the rotary table before and after swing test and then data processing is carried out so as to obtain the swing zeroing error. The detection apparatus and method provided by the invention can detect the swing frequency errors and swing zeroing errors of rotary tables of different types, and has the characteristics of good applicability, high accuracy, convenience and rapidness.

Description

technical field [0001] The invention belongs to the technical field of inertial device testing, and in particular relates to a detection device and method for a swing frequency error and a swing zero error of a turntable. Background technique [0002] The turntable is used as the inertial device test equipment, the realization of the swing function and the judgment of the relative error and zero error of the swing frequency play an increasingly important role in the performance of the inertial device. With the continuous improvement of the technical indicators of inertial devices, higher requirements are put forward for the determination of the swing frequency and zero swing index of the turntable system. [0003] At present, the swing function of the turntable mainly focuses on the acceleration index. Through the limitation of the highest swing frequency and the acceleration index, the maximum motion amplitude corresponding to the swing frequency can be calculated. During ...

AI Technical Summary

Problems solved by technology

However, there is a lack of effective methods and detection devices for the detection of swing frequency and swing return to zero.

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