Study on the precise time-grating displacement sensor

Wei Yang; Donglin Peng; Xiaokang Liu; Xinghong Zhang

doi:10.1117/12.715275

13 October 2006 Study on the precise time-grating displacement sensor

Wei Yang, Donglin Peng, Xiaokang Liu, Xinghong Zhang

Proceedings Volume 6280, Third International Symposium on Precision Mechanical Measurements; 62800B (2006) https://doi.org/10.1117/12.715275
Event: Third International Symposium on Precision Mechanical Measurements, 2006, Urumqi, China

Abstract

This paper analyzes the mechanism of the traditional grating structure sensor and lists some disadvantages such as low resolution and weak anti-interfere. Aiming at these disadvantages, one innovative thought of "measuring space by time" is proposed. In this thought the displacement can be expressed by the time, and the time can be obtained by the method of high frequency pulse interpolation. The time measurement is very precise, so the displacement measurement would has high precision. The single tooth time grating displacement sensor is designed based on the thought. The single tooth time grating initially realizes the thought, but the effectiveness is not very ideal. Another design project, which is based on the rotary magnetic field in the motor, is presented. The sample for field type time grating has been designed. The experimental results coming out from applications confirm the validity of the proposed method.

Citation Download Citation

Wei Yang, Donglin Peng, Xiaokang Liu, and Xinghong Zhang "Study on the precise time-grating displacement sensor", Proc. SPIE 6280, Third International Symposium on Precision Mechanical Measurements, 62800B (13 October 2006); https://doi.org/10.1117/12.715275

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