基于分数阶FxLMS的浮筏-圆柱壳主动控制方法

程伟鹏; 吴文伟; 乌德木; 尹志勇

doi:10.11993/j.issn.2096-3920.2026-0020

基于分数阶FxLMS的浮筏-圆柱壳主动控制方法

doi: 10.11993/j.issn.2096-3920.2026-0020

1.
中国船舶科学研究中心, 江苏无锡, 214082
2.
深海技术科学太湖实验室, 江苏无锡, 214082

基金项目: 中国船舶科学研究中心项目资助(WDZC70202020301).

详细信息

作者简介:
程伟鹏(2001-), 男, 在读硕士, 主要研究方向为振动噪声主动控制

中图分类号: TJ630; U661.44
计量
- 文章访问数: 88
- HTML全文浏览量: 55
- PDF下载量: 69
- 被引次数: 0
出版历程
- 收稿日期: 2026-01-19
- 修回日期: 2026-03-02
- 录用日期: 2026-03-04
- 网络出版日期: 2026-03-31

Research on Active Control Method of Floating Raft and Cylindrical Shell Systems Based on Fractional-Order FxLMS

1.
China Ship Scientific Research Center, Wuxi 214082, China
2.
Taihu Laboratory of Deepsea Technological Science, Wuxi 214082, China

摘要

摘要: 针对水下航行器主辅机等机械设备低频线谱振动难以抑制的问题, 文中提出了一种基于分数阶梯度下降法的双通道耦合分数阶滤波-x最小均方(FxLMS)算法。通过仿真对比分析了不同分数阶阶数对控制性能的影响。搭建了浮筏-圆柱壳结构的主动振动控制试验平台, 开展不同工况对比试验。试验结果表明: 相较于单通道控制策略, 所提出的双通道协同控制方案在浮筏-圆柱壳系统的整体振动抑制方面具有显著优势, 能够有效避免局部振动放大现象; 在双频线谱激励下, 该方法仍展现出良好的控制效能与工程实用性。研究可为舰船及水下航行器的低频振动主动控制提供参考与技术支撑。
- 水下航行器 /
- 低频线谱 /
- 分数阶 /
- 主动振动控制 /
- FxLMS算法
Abstract: To suppress low-frequency line-spectrum vibrations in mechanical equipment such as the main and auxiliary machinery of undersea vehicles, this paper proposed a dual-channel fractional-order filtered-x least mean square(FxLMS) algorithm based on the fractional-order gradient descent method. The control performance of algorithms with different fractional orders was analyzed and compared through simulations. An experimental platform for active vibration control based on a floating raft and cylindrical shell structure was established. Comparative experiments under various operating conditions demonstrate that compared with single-channel control strategies, the proposed dual-channel collaborative control scheme exhibits significant advantages in suppressing the overall vibration of the floating raft and cylindrical shell system. It can effectively avoid the phenomenon of local vibration amplification. Under dual-frequency line spectrum excitation, this method still demonstrates good control effectiveness and engineering practicability. This study can provide reference and technical support for the active control of low-frequency vibration in ships and undersea vehicles.
- undersea vehicle /
- low-frequency line spectrum /
- fractional order /
- active vibration control /
- FxLMS algorithm

HTML全文

图 1 FOFxLMS算法框图

Figure 1. Block diagram of the FOFxLMS algorithm

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图 2 DFOFxLMS算法框图

Figure 2. Block diagram of the DFOFxLMS algorithm

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图 3 浮筏-圆柱壳主动控制系统

Figure 3. Active control system of the floating raft and cylindrical shell structure

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图 4 分数阶阶数对算法性能的影响

Figure 4. Influence of fractional orders on algorithm performance

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图 5 加速度传感器位置

Figure 5. Location diagram of acceleration sensors

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图 6 双通道主动控制试验硬件

Figure 6. Dual-channel active control experiment hardware

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图 7 单通道误差信号控制前后时频域对比

Figure 7. Time- and frequency-domain comparison of single-channel error signal before and after control

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图 8 各测点单通道控制减振效果

Figure 8. Vibration reduction effect of single-channel control at each measuring point

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图 9 双通道误差信号控制前后时频域对比

Figure 9. Time- and frequency-domain comparison of dual-channel error signals before and after control

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图 10 单通道和双通道控制减振效果对比

Figure 10. Comparison of vibration reduction effects between single-channel and dual-channel control

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图 11 双频双通道误差信号控制前后时频域对比

Figure 11. Time- and frequency-domain comparison of dual-frequency dual-channel error signal before and after control

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图 12 双频双通道各测点减振效果

Figure 12. Vibration reduction effect of dual-frequency dual-channel control at each measuring point

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表 1 算法计算量对比

Table 1. Comparison of computational workload between two algorithms

运算类型 DFOFxLMS DFxLMS

加/减运算 4M+4L−2 4M+4L−2

乘/除运算 4M+8L+4 4M+6L+2

其他运算(伽玛函数/绝对值/指数) 6 0

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