以电磁作动器式主动液阻悬置为研究对象，建立机−电−磁−液多物理场耦合的力学及数学模型，并推导次级通道传递特性，旨在分析和评估其在抑制车辆振动方面的性能。采用基于电压控制形式的次级通道传递特性的窄带复数滤波最小均方N-C-FxLMS (narrowband complex filtered-x least mean square)算法对系统进行仿真，并且基于dSPACE半实物仿真平台和inova振动试验台进行实验验证。仿真结果表明，在25 Hz至200 Hz的频段内，所提出的控制策略能够显著改善系统的减振性能。实验结果表明，主动控制能将传递至车身端的振动减小17 dB到27 dB，验证了模型的准确性和控制策略的有效性，为主动悬置系统的设计和优化提供了有价值的理论依据和实验支持。
Abstract
In order to analyze and evaluate its performance in suppressing vehicle vibration, a mechanical and mathematical model of mechanical-electric-magnetic-liquid multi-field coupling is established for active hydraulic mount with electromagnetic actuator, and the transmission characteristic of secondary path is deduced. N-C-FxLMS (narrowband complex filtered-x least mean square) algorithm based on secondary path transmission characteristic in the form of voltage control is used to simulate the system. The experiment is verified based on dSPACE semi-physical simulation platform and inova vibration test bench. The simulation result shows that the proposed control strategy can significantly improve the vibration damping performance of the system in the frequency band from 25 Hz to 200 Hz. The experimental result shows that the active control can reduce the vibration transmitted to the autobody end by 17 dB to 27 dB, which verifies the accuracy of the model and the effectiveness of the control strategy, and provides a valuable theoretical basis and experimental support for the design and optimization of the active mount system.
关键词
旋转机械 /
主动减振 /
主动液阻悬置 /
次级通道 /
快速控制原型
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Key words
rotating machinery /
active vibration control /
active hydraulic mount /
secondary path /
rapid control prototype
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参考文献
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