海浪扰动下电液3-UPS/S舰船并联稳定平台振动特性分析  

Analysis of Vibration Characteristics of Electro-Hydraulic 3-UPS/S Ship Parallel Stabilized Platform Under Sea Wave Disturbance

作　　者：袁晓明[1] 王维锜 张睿聪 周如林 张立杰[1] YUAN Xiao-ming;WANG Wei-qi;ZHANG Rui-cong;ZHOU Ru-lin;ZHANG Li-jie(Hebei Provincial Heavy Machinery Fluid Power Transmission and Control Laboratory,Yanshan University,Qinhuangdao,Hebei 066004;Beijing Tianma Intelligent Control Technology Co.,Ltd.,Beijing 101399)

机构地区：[1]燕山大学河北省重型机械流体动力传输与控制实验室,河北秦皇岛066004 [2]北京天玛智控科技股份有限公司,北京101399

出　　处：《液压与气动》2023年第10期1-14,共14页Chinese Hydraulics & Pneumatics

基　　金：国家重点研发计划(2019YFB2005303);国家自然科学基金面上基金(52175066);河北省自然科学基金面上项目(E2020203090);河北省高等学校科学技术重点项目(ZD2022052)。

摘　　要：针对电液驱动的舰船并联稳定平台在实际工况下的振动问题,以电液3-UPS/S舰船并联稳定平台为研究对象,在考虑铰链刚度的基础上应用虚功原理建立稳定平台的动力学模型;通过海浪谱函数,计算了随机海浪激励下船舶的运动响应,进而得到稳定平台跟踪舰船运动的响应规律;分析了稳定平台在随机海浪激励条件下和初始工作空间内的固有频率变化特性;最后,为验证动力学模型的正确性,采用脉冲激励法对稳定平台样机进行模态试验,固有频率理论值与试验值的最大误差为4.66%,可以验证动力学模型的正确性。Aiming at the vibration problem of the electro-hydraulic ship parallel stabilized plaform under actual working conditions,taking the electro-hydraulic 3-UPS/S ship parallel stabilized platform as the research object,the dynamic model of the stabilized platform is established based on the virtual work principle considering the hinge stifness.The ship's motion response under the random wave excitation is calculated based on the wave spectrum function.Then the trajectory curve of the stable platform tracking the ship movement is obtained.Furthermore,the natural frequency variation law of the stabilized platform under the condition of random wave excitation and in the initial workspace is analyzed.Finally,to verify the correctness of the dynamic model,the modal test on the stabilized platform prototype is carry out by using the pulse excitation method.The maximum error between the theoretical value of natural frequency and the experimental value is 4.66%,which can verify the correctness of the dynamic model.

关 键 词：电液3-UPS/S舰船并联稳定平台 海浪模拟 动力学方程 振动特性 模态试验 

分 类 号：TH137[机械工程—机械制造及自动化]