Method for automatically identifying equally-spaced sections in motor rotor surface roundness test

Abstract

The invention discloses a method for automatically identifying equally-spaced sections in motor rotor surface roundness test. The method includes a dynamic low-pass digital filtering algorithm, a section edge feature extraction algorithm, a section equal spacing determination extraction algorithm, and a section and edge burr removal algorithm. The dynamic low-pass digital filtering algorithm includes a dynamic Gaussian low-pass digital filtering algorithm, a dynamic zero-phase-shift low-pass digital filtering algorithm, a Gaussian low-pass digital filter coefficient generation algorithm and adynamic zero-phase-shift low-pass digital filtering coefficient generation algorithm. The method for automatically identifying equally-spaced sections in motor rotor surface roundness test is reasonable in design, and has the advantages of higher efficiency, high precision, small error, good repeatability and high reliability compared with the traditional artificial data removal method. Moreover,the manual workload is greatly reduced.

Description

technical field [0001] The invention relates to the field of automatic testing and measurement, in particular to an automatic identification method for equidistant sections of motor rotor surface roundness testing. Background technique [0002] In the production process of the rotors of brushed motors and stepping motors, due to the lack of timely cleaning and maintenance of the finishing equipment on the assembly line, various processing defects often occur during the turning process of the installed rotors. At present, conventional roundness meters or deflection meters are generally used to conduct spot checks on the commutators on the assembly line to ensure the production quality of the rotors in the turning process. Since there are equally spaced cross-sectional gaps on the arc surface of the rotor of the brushed motor and stepping motor, the entire arc surface is discontinuous, so how to avoid the commutation gap area to measure the roundness data of the real arc part ...

AI Technical Summary

Problems solved by technology

Conventional roundness meter testing usually requires manual removal of the data of these commutation gaps. Manual removal not only has a large workload and low accuracy, but also reduces the efficiency of the test.

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