Calibration device of absolute type shaft angle encoder

Abstract

The invention discloses a calibration device of an absolute type shaft angle encoder, and belongs to the technical field of test. The calibration device of the absolute type shaft angle encoder consists of a self-collimation instrument and a 23-surface body, so that an inherent error of the absolute type shaft angle encoder can be obtained; errors such as an assembly eccentric error, a scribing error and the like of the absolute type shaft angle encoder can be calibrated; and moreover, due to the acquired calibration data and actual output data of the absolute type shaft angle encoder, the error of the actual output data of the absolute type shaft angle encoder can be corrected, and the detection precision of the absolute type shaft angle encoder is improved. The calibration device comprises a self-collimation instrument platform 1, the 23-surface body 2, a leveling rotary device 3, a tested absolute type shaft angle encoder 4, a fine adjustment device 5, a lamp bar 6 and the like; the tested absolute type shaft angle encoder 4 and the 23-surface body 2 are coaxially arranged through the leveling rotary device 3; the 23-surface body 2 is leveled by the leveling rotary device 3; and the self-collimation instrument determines angle data of each measurement surface of the 23-surface body 2 so as to determine the calibration data of each position.

Description

technical field [0001] The invention relates to a calibration device of a precision absolute shaft angle encoder. The calibration device using the absolute shaft-angle encoder can calibrate the errors such as installation eccentricity and marking error of the absolute shaft-angle encoder, and can perform error correction accordingly. The calibration device of the absolute shaft angle encoder is used for the calibration of the error of the sensor device for measuring physical quantities such as rotation angle, linear displacement, and rotational speed in the field of automation, and improves the measurement accuracy on this basis, which belongs to the field of testing technology. technical background [0002] Absolute shaft encoders are widely used in high-precision measurement of rotation angle, linear displacement, rotational speed, etc. Absolute shaft encoder coding includes coarse code and fine code. The coarse code is corrected by the fine code, so the accuracy of the c...

AI Technical Summary

Problems solved by technology

At present, there is no relevant literature reporting the calibration of absolute shaft-angle encoders. It can be seen that the accuracy of absolute shaft-angle encoders is only a theoretical result, and it is impossible to know the errors caused by actual installation, let alone fundamentally. Correct the error of the precision code reading accuracy caused by the installation eccentricity and marking error

Images