基于FxRLS自适应逆补偿的振动控制策略研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (23) : 215-222.

论文

王敏 1,2,廖松泉 1，钟雨轩 1,3

作者信息 +

Vibration control strategy based on FxRLS adaptive inverse compensation

WANG Min1,2,LIAO Songquan1,ZHONG Yuxuan1,3

Author information +

文章历史 +

摘要

为满足航天器中搭载的高精度设备对振动环境要求的不断提高，提出将滤波-x最小均方（Filtered-X Recursive Least Square，FxRLS）自适应算法与逆补偿方法结合应用于隔振系统中。首先从系统动力学模型和自适应逆补偿算法两方面展开了理论分析，通过FxRLS自适应控制对系统响应进行精确跟踪，利用逆补偿控制对系统振动进行主动消除。为验证控制策略的有效性，在Simulink和实验环境中，搭建了验证系统。结果表明：对不同激励信号下的跟踪性能及振动消除效果进行仿真分析，自适应逆补偿输出的控制信号能够有效跟踪负载端振动信号，跟踪率最高可达99.97%。相比滤波-x最小递归二乘（Filtered-X Least Mean Square，FxLMS），FxRLS在跟踪速度和跟踪精度两方面的综合性能更优。应用FxRLS自适应逆补偿控制后，实验显示随机扰动隔振率达到了66.7%。实验与仿真结果都证明了本文控制策略的有效性。
关键词：振动隔离；自适应算法；逆补偿控制。

Abstract

To meet the increasing requirement of ultra-precision equipment carried in spacecraft for environmental vibration, the combination of Filtered-X Recursive Least Square (FxRLS) adaptive algorithm and inverse compensation method was proposed. Firstly, theoretical analysis was carried out from the dynamics model of isolator and adaptive inverse compensation. FxRLS was used to accurately track the response, and the inverse compensation was used to actively eliminate the vibration. To verify the effectiveness of this control strategy, verification systems were built in Simulink and experiment respectively. The results show that the control output can effectively track the vibration signal of payload under different excitations, and the tracking ratio can reach up to 99.97%. Compared with Filtered-X Least Mean Square (FxLMS), FxRLS has better comprehensive performance in tracking speed and tracking accuracy. In the experiment, the isolation ratio of random disturbance reaches 66.7% after applying FxRLS adaptive inverse compensation. Experimental and simulation results both prove the effectiveness of this control strategy.

导出引用

王敏 1,2,廖松泉 1，钟雨轩 1,3. 基于FxRLS自适应逆补偿的振动控制策略研究[J]. 振动与冲击, 2023, 42(23): 215-222

WANG Min1,2,LIAO Songquan1,ZHONG Yuxuan1,3. Vibration control strategy based on FxRLS adaptive inverse compensation[J]. Journal of Vibration and Shock, 2023, 42(23): 215-222

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