基于前馈-反馈混合FxLMS算法的主动悬置控制

doi:10.13229/j.cnki.jdxbgxb.20231372

摘要/Abstract

摘要：

针对悬置车身端存在的窄带及宽带振动问题，采用前馈-反馈混合FxLMS算法对振荡线圈作动器式主动液阻悬置进行控制。在前期主动悬置力学模型、数学模型及全参数识别的基础上，使用MATLAB/Simulink进行主动悬置控制系统离线仿真。结果表明，相较于前馈FxLMS算法，混合算法能够更好地抑制车身端的振动。开发了控制器原理样机，并进行了全实物台架实验，测试混合算法的振动控制性能。结果表明，混合算法能够将车身端的振动总体降低11~23 dB。混合算法融合了前馈与反馈FxLMS算法的优点，能有效减小振动造成的不利影响。

关键词: 车辆工程, 动力总成主动悬置, 振荡线圈作动器, 混合算法, 振动主动控制

Abstract:

In this paper，the feedforward-feedback hybrid FxLMS（Filtered-x Least Mean Square） algorithm is employed to control the active hydraulic mount with oscillating coil actuator for the narrowband and broadband vibration issues at the autobody end of the mount. Based on the preliminary work of mechanical model， mathematical model and all parameters identification of the active mount， MATLAB/Simulink is used to perform offline simulation of the active mount control system. The result shows that the hybrid algorithm can suppress vibrations at the autobody end more effectively compared to the feedforward FxLMS algorithm. A controller prototype is developed and full object bench experiment is carried out to test the vibration control performance of the hybrid algorithm. The result shows that the hybrid algorithm can reduce the overall vibrations at the autobody end by 11 dB to 23 dB. By combining the advantages of both feedforward and feedback FxLMS algorithm， the hybrid algorithm effectively reduces the adverse impacts of vibrations.

Key words: vehicle engineering, powertrain active mount, oscillating coil actuator, hybrid algorithm, active vibration control

中图分类号:

TB123

范让林,未波. 基于前馈-反馈混合FxLMS算法的主动悬置控制[J]. 吉林大学学报(工学版), 2025, 55(10): 3100-3107.

Rang-lin FAN,Bo WEI. Active mount control based on feedforward-feedback hybrid FxLMS algorithm[J]. Journal of Jilin University(Engineering and Technology Edition), 2025, 55(10): 3100-3107.

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参考文献 11

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参数	定义	数值
m₁/kg	橡胶主簧端的等效集中质量	60.00
A₁/mm²	橡胶主簧泵液活塞面积	3 584.40
k₁/（N?mm^-1）	橡胶主簧储能动刚度	522.04
K₁/（GN·m^-5）	橡胶主簧动态体积刚度	121.53
c₁/（N?s?m^-1）	橡胶主簧阻尼系数	17.90
A₂/mm²	惯性通道横截面积	92.50
m₃/g	动子质量	113.93
A₃/mm²	解耦膜泵液活塞面积	1 320.03
k₃/（N?mm^-1）	解耦膜动刚度	61.95
K₃/（GN·m^-5）	解耦膜动态体积刚度	35.55
c₃/（N?s?m^-1）	解耦膜阻尼系数	44.40
R/Ω	振荡线圈的电阻	3.70
L/mH	振荡线圈的电感	3.50
k_M/（T?m）	音圈常数	14.00