Robust finite-time adaptive control for high performance voice coil motor-actuated fast steering mirror

doi:10.1063/5.0124203

CIOMP OpenIR

	Robust finite-time adaptive control for high performance voice coil motor-actuated fast steering mirror
	L. Wang; Z. Wang; F. Wang; G. Shi and R. Xu
	2022
发表期刊	Review of Scientific Instruments
ISSN	346748
卷号	93 期号:12
摘要	Fast steering mirror (FSM) is an efficient and reliable mechanical device in aerial optical image systems for controlling the beam direction with high precision. With the advantages of compact size, high speed, simple structure, and long linear stroke, voice coil motors are ideal actuators for FSM systems. However, model uncertainty can lead to poor performance or even system divergence, especially in environments with temperature variations, electromagnetic environment changes, etc. This paper proposes a novel finite-time adaptive control (FAC) algorithm for an FSM system to obtain high performance, i.e., positioning accuracy, dynamic performance, and robustness. In addition, the finite-time convergence of the controller is analyzed. In the experiments, the controller is implemented in a DSP-based microprocessor. The step response results show that the proposed algorithm has a shorter setting time, smaller overshoot, and smaller steady-state error compared to classical sliding mode control (SMC). The sinusoidal signal tracking accuracy of FAC + SMC has been improved by 19.8%. In addition, as the model uncertainty increases 10%, the root mean square errors (RMSEs) are 1.73 and 1.18 for SMC and FAC + SMC, respectively. With 20% model uncertainty, the RMSEs increase to 2.56 and 1.85, respectively. Extensive experiments demonstrate the general effectiveness of the proposed algorithm. 2022 Author(s).
DOI	10.1063/5.0124203
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67068
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	L. Wang,Z. Wang,F. Wang,et al. Robust finite-time adaptive control for high performance voice coil motor-actuated fast steering mirror[J]. Review of Scientific Instruments,2022,93(12).
APA	L. Wang,Z. Wang,F. Wang,&G. Shi and R. Xu.(2022).Robust finite-time adaptive control for high performance voice coil motor-actuated fast steering mirror.Review of Scientific Instruments,93(12).
MLA	L. Wang,et al."Robust finite-time adaptive control for high performance voice coil motor-actuated fast steering mirror".Review of Scientific Instruments 93.12(2022).

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