船舶动力推进轴系纵向低频振动精准控制仿真  

Simulation of Accurate Control of Longitudinal Low Frequency Vibration of Ship Power Propulsion Shafting

作　　者：陈洁 曾励[2] CHEN Jie;ZENG Li(School of Electrical and Energy Engineering,Nantong Institute of Technology,Nantong Jiangsu 226002,China;School of Mechanical Engineering,Yangzhou University,Yangzhou Jiangsu 225127,China)

机构地区：[1]南通理工学院电气与能源工程学院,江苏南通226002 [2]扬州大学机械工程学院,江苏扬州225127

出　　处：《计算机仿真》2024年第10期296-300,共5页Computer Simulation

基　　金：南通市科技计划项目(JCZ20189);南通理工学院中青年骨干教师培养(科学研究)专项(202127)。

摘　　要：为提高船舶航行舒适性,降低振动引起的噪声影响,研究一种船舶动力推进轴系的纵向振动控制方法。建立纵向振动简化模型,分析纵向振动产生条件。在稳态响应条件下计算振动幅值,搭建频率响应函数,明确振动动态特性。计算轴体的自由边界条件,通过轴体分布点的位移变化和简谐激励频率,得出二阶线性常微分方程式。在推进轴系上安装对应的主振型吸振器,考虑轴系低频振动情况,通过一阶模态的轴系响应参数调整变化完成最佳振动控制。经仿真证明所提方法降低了轴系纵向振动,控制误差小,精度高。In order to improve the comfort of ship navigation and reduce the noise impact caused by vibration,a longitudinal vibration control method of the ship power propulsion shaft system is studied.A simplified longitudinal vibration model is established to analyze the longitudinal vibration conditions.The vibration amplitude is calculated under the steady state response condition,the frequency response function is built,and the dynamic characteristics of vibration are clarified.The free boundary conditions of the shaft are calculated,and the second-order linear ordinary differential equations are derived from the displacement changes of the distributed points of the shaft and the simple harmonic excitation frequency.The corresponding main vibration absorber is installed on the propulsion shaft system,and the optimal vibration control is accomplished by adjusting the response parameters of the shaft system through the first-order modes,taking into account the low-frequency vibration of the shaft system.The simulation experiment proves that the proposed method reduces the longitudinal vibration of the shaft system,and the control error is small and theaccuracy is high.

关 键 词：动力推进轴系 纵向振动 振动控制 螺旋桨 吸振器 轴系纵振 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]