Research on Online Measurement Techniques of Optical Encoder
|Keywords||Optical encoder Moiré fringe Virtual instrument Duty cycle|
With the development of the cause of industrial automation , optical encoder applications continue to expand, the principle of the new structure of the new technology emerging optical encoder on the market . Line detection in the production process of the optical encoders , the optical encoder analytical instruments is essential , it is related to the control of the quality of the optical encoder , we can analyze the electrical performance of the optical encoder , indispensable in the production and application process . This paper systematically introduces the working principle of the optical encoder , successfully completed the optical encoder electrical performance testing and evaluation instrument system design and application of a series of research work on the basis of a comprehensive and profound understanding of the optical encoder . The instrument provides the linear range of the number of motor revolutions of 150 rev / min to 8000 rev / min , the highest single-channel sampling rate of 1.25 MS / s . The instrument can simultaneously display the waveforms of the three channels , and to achieve a superposition of the channel . The retardation of the incremental optical encoder can be read directly A / B / Z of each channel signal , the amplitude range , the duty ratio of the size, frequency, and phase parameters and its dynamic characteristics , the count of the output pulses of the optical encoder functionality , comprehensive assessment of the electrical properties of the optical encoder . The development work for the production of incremental optical encoder parameter adjustment , performance testing and quality control of high-performance means . Article also through online testing instruments of the electrical characteristics of the optical encoder debug experiment , the impact experiment , high and low speed compared experimental code disc fallout experimental series of experiments , testing the impact of various factors on the performance of an optical encoder , the article also in combination with optical the encoder operating principle , discuss in the manufacturing and application process , what factors have an important influence on the optical encoder performance , the research of this article the manufacture and application of optical encoder is not only of academic interest , but also has significant economic value .