Development of Auto-Correct System towards Circle Precise Carbon-Film Potentiometer

Abstract:

Circle film carbon potentiometer, as a kind of position feedback device, is widely used in the servo feedback system in the field of aviation and aerospace technology. In the processes of making circle potentiometer, the process of correction on the linearity is an important factor which affects the pass rate of precise carbon-film potentiometer. Now people usually correct the linearity of potentiometer manually, with a lowefficiency and bad effect. Accordingly, in this work we develop a set of correct system on the linearity correction of circle precise carbon-film potentiometer by some research on the correct crafts of some circle potentiometer. The system mainly consists of circuit test part, mechanical correction part and PC control part. This system realizes the auto-correction of the linearity of circle potentiometer by measuring the resistance before correcting, substituting it to predetermined algorithm to make a target value and correcting the linearity. When using this system in the experiment, the corrected linearity of circle potentiometer is below 0.5%, which meets the develop target and using requirement.

• Periodical: Key Engineering Materials (Volume 621)
• Pages: 687-692
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.621.687
• Online since: August 2014
• Authors: Hua Guo, Hao Yan Wang
• Keywords: Auto Correction, Circle Potentiometer, Constant Current Source, Feedback

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