A Method for Improving Light Intensity Stability of a Total Reflection Prism Laser Gyro Based on Series Correction and Feedforward Compensation
| Autor: | Yanhua Yuan, Shiming Liu, Jiangtao Zheng, Sihai Li, Qiangwen Fu, Yuanbo Tao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
General Computer Science Total reflection prism laser gyro PID controller 02 engineering and technology 01 natural sciences Compensation (engineering) Longitudinal mode series correction 020901 industrial engineering & automation Control theory Ring laser gyroscope dynamic and steady-state performance General Materials Science light intensity stability Physics feedforward compensation bias stability 010401 analytical chemistry General Engineering Feed forward Scale factor 0104 chemical sciences Light intensity Prism lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:TK1-9971 |
| Zdroj: | IEEE Access, Vol 8, Pp 13651-13660 (2020) |
| ISSN: | 2169-3536 |
| Popis: | The instability of scale factor and null shift are closely related to the change of the light intensity of a total reflection prism laser gyro (TRPLG). To improve the light intensity stability, the light intensity stabilization principle of TRPLG was analyzed, and a mathematical model of light intensity stabilization system was established. Aiming at the problem that original system has a long adjustment time, a series correction method of adding a proportional integral differential (PID) link in the forward channel was adopted. According to the third-order optimal design, the original I-type third-order overdamped system was optimized to the new II-type third-order underdamped system, which ultimately improved the system's dynamic and steady-state performance. Feedforward compensation was used to introduce the light intensity disturbance during the longitudinal mode hopping into the closed-loop system, which realized the full compensation of the light intensity error and improved the light intensity characteristics during the longitudinal mode hopping. Combined with the above two methods, experimental results showed that the new system with feedforward compensation improved the light intensity stability by 32% at constant temperature and by 40% at variable temperature, with the TRPLG's bias stability improved by more than 16% at constant temperature and by 22% at variable temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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