Laser & Optoelectronics Progress, Volume. 58, Issue 13, 1314004(2021)
Research on Beam Jitter Control Technology Base on Hybrid Adaptive Filter
In the beam transmission system, there are usually wide-band disturbances with energy inversely proportional to the frequency caused by the transmission medium and narrow-band disturbances at a specific frequency caused by platform vibration, which causes the beam to jitter or drift and lead to the decrease of the spot energy. In order to solve the beam jitter caused by large amplitude, high frequency narrow-band disturbance and wide-band disturbance in the beam transmission system, this paper designs a beam jitter control method based on a hybrid adaptive filter with high-speed tilting mirror resonance compensation. The method adopts the control structure of the least mean square (LMS) adaptive filter and the classic proportional integral controller working in parallel. The LMS adaptive filter is used to suppress high frequency and large narrow-band disturbances, and the proportional integral controller is used to suppress the wide-band disturbance, so as to realize the simultaneous suppression of the large amplitude, high frequency narrow-band disturbance and wide-band disturbance. Experimental results show that the system structure and control method proposed in this paper can effectively suppress the beam jitter in the beam transmission system.
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Rui Zhou, Qiang Zhang, Yong Liao, Yongdong Gan, Feng Shen, Xinyang Li. Research on Beam Jitter Control Technology Base on Hybrid Adaptive Filter[J]. Laser & Optoelectronics Progress, 2021, 58(13): 1314004
Category: Lasers and Laser Optics
Received: Sep. 29, 2020
Accepted: Oct. 29, 2020
Published Online: Jul. 14, 2021
The Author Email: Zhang Qiang (zhangqiang_ioe@126.com)