基于自适应方法的轴系纵振主动控制研究  

Shaft longitudinal vibration active control based on the adaptive method

作　　者：郑洪波 胡芳[2] 黄志伟[3] 张志谊 ZHENG Hongbo;HU Fang;HUANG Zhiwei;ZHANG Zhiyi(Collaborative Innovation Center for Advanced Ship and Deep-sea Exploration,Shanghai Jiao Tong University,Shanghai 200240,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]高新船舶与深海开发装备协同创新中心,上海200240 [2]武汉理工大学材料科学与工程学院,武汉430070 [3]中国舰船研究设计中心,武汉430064

出　　处：《振动与冲击》2018年第4期203-207,218,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(11672180;51609226)

摘　　要：推力轴承基座是螺旋桨纵向激励向船体传递的主要路径。针对推进轴系纵振控制问题,建立螺旋桨-轴系-推力轴承基座耦合振动模型,采用四端参数法求解模型干扰通道与控制通道的频响函数,并通过数值仿真分析主动控制效果。结果表明,在推力轴承基座上施加纵向控制力,自适应控制策略能使推力轴承基座纵向振动得到有效控制。将作动器对称安装于推力轴承基座,通过作动器输出力抵消干扰激励的影响。实验结果表明,控制方法能有效抑制推力轴承基座的纵向振动,100 Hz内的功率谱峰值下降90%左右。The thrust bearing pedestal in a propulsion shafting is the main path for longitudinal vibration to transmit from the propeller to the hull.A propeller-shaft-thrust bearing pedestal vibration model was established to study the active longitudinal vibration control,and the four-pole-parameter method was adopted to derive the frequency response functions of the disturbance and control channels,and the analysis of active control effect was performed through numerical simulation.The simulation results show that the adaptive control strategy can reduce longitudinal vibration of the thrust bearing pedestal effectively when the longitudinal control force is exerted on the thrust bearing pedestal.To verify the control method,with research object of the shafting system,actuators were mounted on the thrust bearing housing symmetrically,which responded to the controller to cancel the effects of the disturbance.Experimental results demonstrate that the control method can suppress the longitudinal vibration of the thrust bearing pedestal effectively,and the peak of power spectrum decreases by about 90%within the 100 Hz.

关 键 词：轴系纵振 四端参数法 主动控制 自适应算法 

分 类 号：TB535[理学—物理] O327[理学—声学]