Angle measurement precision detection apparatus of encoder and detection method thereof

Abstract

The invention relates to the precision shaft angle measuring instrument precision detection filed, more particularly to an angle measurement precision detection apparatus of an encoder and a detection method thereof. The apparatus comprises a coupling assembly, a precision main shaft, a motor, a precision encoder, a connection base, a rotary table, a workbench, and a computer system. The precision encoder is employed as a reference and is connected with the precision main shaft coaxially. The precision main shaft is driven by the motor; and an output shaft of the precision main shaft is connected with a detected encoder. The computer controls the rotating speed and the position of the motor as well as simultaneously collects angle measurement data of the precision encoder and the detected encoder; and an error value representing deviation of the position output of the detected encoder from the position output of a reference precision encoder is obtained in rotation angles from 0 degree to 360 degrees of the precision main shaft. And processing is carried out by the computer to provide various measurement errors of the detected encoder and error frequency spectrums. According to the invention, beneficial effects are as follows: there are lots of measurement points and measurement can be carried out continuously, so that various errors of a detected encoder can be reflected; a frequency spectrum analysis on an error source can be carried out; automatic measurement is carried out, the measuring period is short and efficiency is high; and electronization of data processing is realized as well as detection data are filed.

Description

technical field [0001] The invention relates to the technical field of accuracy detection of precision shaft angle measuring instruments, in particular to an encoder angle measurement accuracy detection device and method. Background technique [0002] At present, the accuracy detection method of the encoder is: the polyhedron is connected coaxially with the encoder to be tested, and the position data of the encoder to be tested is read out through the self-alignment of the light pipe on each surface of the polyhedron, and then the code to be tested is measured. device error. The existing encoder accuracy detection method has the following defects: 1. In the whole process, the encoder to be tested has a limited number of measurement points (within 36 points), which is only the number of faces of the polyhedron, which cannot reflect all errors of the encoder to be tested; 2. , The measurement process is manual operation, the measurement cycle is long, and the random error is ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of few measurement points, long measurement cycle, large measurement error, and time-consuming and labor-consuming existing encoder accuracy detection methods, the present invention provides an encoder angle measurement accuracy detection device and method

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