本文针对船舶设备基座变频激励振动响应问题，提出基于箕舌线变步长自适应算法的船舶设备振动主动控制方法，旨在解决船舶设备激励频率变化时的基座振动主动控制问题。首先介绍基于箕舌线函数的改进变步长FxLMS自适应算法基本原理，然后建立船舶设备-基座系统的振动微分方程，推导振动主动控制系统中的初级和次级通道传递函数，再结合基于箕舌线函数的改进变步长FxLMS自适应算法，建立船舶设备-基座系统的变频激励自适应主动振动控制模型，基于该模型开展恒定频率及变频激励下的振动主动控制仿真分析。结果显示，变频多线谱激励下，50 Hz线谱减振达到78%，80 Hz线谱减振达到80%，说明本文的控制策略可靠有效，能够有效降低多线谱变频激励下设备-基座振动响应，可为船舶设备主动隔振提供新技术。
In order to solve the problem of frequency conversion excitation vibration response of ship equipment base, this paper proposes an active control method of ship equipment vibration based on the adaptive algorithm of tongue line variable step size, which aims to solve the problem of active control of base vibration when the excitation frequency of ship equipment changes. In this paper, the fundamental principle of the improved variable step-size FxLMS adaptive algorithm based on the tongue-like curve function is firstly introduced. Then, the vibration differential equation of the ship equipment-base system is established, the transfer functions of the primary and secondary channels in the vibration active control system are derived, and then combined with the improved variable step size FxLMS adaptive algorithm based on the tongue-like curve function, the adaptive active vibration control model of the variable frequency excitation of the ship equipment-base system is established, and the simulation and analysis of the vibration active control under constant frequency and frequency conversion excitation are carried out based on the model. The results show that the vibration reduction of 50 Hz line spectrum reaches 78%, and that of 80 Hz line spectrum reaches 80% under the excitation of frequency conversion multi-line spectrum. indicating that the control strategy proposed in this paper is reliable and effective, which can effectively reduce the vibration response of equipment-base under multi-line spectrum frequency conversion excitation, and the control method can provide a new technology for the active vibration isolation of ship equipment.
2025,47(10): 144-149 收稿日期：2024-7-16
DOI：10.3404/j.issn.1672-7649.2025.10.024
分类号：O328
基金项目：国家自然科学基金青年基金项目（52401369）；水声技术全国重点实验室基金项目（2023JCJQLB07206）；中央高校基本科研业务费-新兴方向培育专项计划项目（3072024XX0503）
作者简介：黄叙（2001-）男，本科在读，研究方向为电子信息工程
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