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工程设计学报  2024, Vol. 31 Issue (4): 428-437    DOI: 10.3785/j.issn.1006-754X.2024.03.210
可靠性与保质设计     
考虑质量分布的雨蚀叶片横向振动分析与自抗扰解耦控制
方春龙1(),王梦君2,周鹤1,李松梅1()
1.青岛科技大学 机电工程学院,山东 青岛 266061
2.山东万通液压股份有限公司,山东 日照 262399
Transverse vibration analysis and active disturbance rejection decoupling control of rain erosion blades considering mass distribution
Chunlong FANG1(),Mengjun WANG2,He ZHOU1,Songmei LI1()
1.College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
2.Shandong Wantong Hydraulic Co. , Ltd. , Rizhao 262399, China
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摘要:

为提升高速耐雨蚀测试装置运行的稳定性与安全性,以其转子-雨蚀叶片系统为研究对象,开展雨蚀叶片的横向振动特性分析。首先,综合考虑雨蚀叶片振动、旋叶连接盘质量偏心及转子不平衡磁拉力的影响,建立转子-雨蚀叶片系统的四自由度横向振动模型。然后,基于Lagrange方程建立转子-雨蚀叶片系统的运动微分方程,并利用Runge-Kutta算法对方程进行数值求解,以观察转子及雨蚀叶片的轴心轨迹与振幅的分布规律。考虑到转子与雨蚀叶片的非线性强耦合关系,采用自抗扰解耦控制方法来抑制雨蚀叶片的横向振动,其中扩张状态观测器的参数采用极点配置和带宽进行调节。最后,通过搭建实验平台来分析采用自抗扰解耦控制前后雨蚀叶片的振动特性,并与数值分析结果进行对比。结果表明,在采用自抗扰解耦控制前转子-雨蚀叶片系统存在振动超标现象,而采用自抗扰解耦控制后雨蚀叶片的横向振动得到了有效抑制,验证了该控制方法的可行性和有效性。研究结果可为后续高速耐雨蚀测试装置的结构优化提供理论参考。

关键词: 转子-雨蚀叶片系统横向振动数值分析自抗扰解耦控制    
Abstract:

In order to improve the stability and safety of the high-speed rain erosion resistance test device, the transverse vibration characteristics of rain erosion blades were analyzed with the rotor-rain erosion blade system as the research object. Firstly, a four-degree-of-freedom transverse vibration model of rotor-rain erosion blade system was established considering the effects of rain erosion blade vibration, mass eccentricity of rotary-blade connecting disc and unbalanced magnetic pull force of rotor. Then, the motion differential equation of rotor-rain erosion blade system was established based on Lagrange equation, and the Runge-Kutta algorithm was used to solve the equation numerically, in order to observe the distribution law of axis trajectory and vibration amplitude of rotor and rain erosion blade. Considering the nonlinear strong coupling relationship between rotor and rain erosion blade, an active disturbance rejection decoupling control method was adopted to suppress the transverse vibration of rain erosion blade, and the parameters of the extended state observer were adjusted by pole assignment and bandwidth. Finally, an experimental platform was set up to analyze the vibration characteristics of the rain erosion blade before and after adopting active disturbance rejection decoupling control, and the results were compared with the numerical analysis results. The results showed that the vibration of rotor-rain erosion blade system exceeded the standard before the active disturbance rejection decoupling control was adopted, but the transverse vibration of rain erosion blade could be effectively suppressed after the active disturbance rejection decoupling control was adopted, which verified the feasibility and effectiveness of the control method. The research results can provide theoretical reference for the structural optimization of high-speed rain erosion resistance test device.

Key words: rotor-rain erosion blade system    transverse vibration    numerical analysis    active disturbance rejection    decoupling control
收稿日期: 2023-10-23 出版日期: 2024-08-26
CLC:  TH 113  
基金资助: 国家自然科学基金资助项目(51972186);山东省自然科学基金资助项目(ZR2020ME114)
通讯作者: 李松梅     E-mail: fang_chun_long@163.com;lisongmei1025@163.com
作者简介: 方春龙(1999—),男,山东济宁人,硕士生,从事机械传动设计与方法研究,E-mail: fang_chun_long@163.com
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引用本文:

方春龙,王梦君,周鹤,李松梅. 考虑质量分布的雨蚀叶片横向振动分析与自抗扰解耦控制[J]. 工程设计学报, 2024, 31(4): 428-437.

Chunlong FANG,Mengjun WANG,He ZHOU,Songmei LI. Transverse vibration analysis and active disturbance rejection decoupling control of rain erosion blades considering mass distribution[J]. Chinese Journal of Engineering Design, 2024, 31(4): 428-437.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2024.03.210        https://www.zjujournals.com/gcsjxb/CN/Y2024/V31/I4/428

图1  转子-雨蚀叶片系统振动模型
图2  转子-雨蚀叶片系统二维结构示意
参数单位数值
转子质量m1kg20
旋叶连接盘质量m2kg20
雨蚀叶片质量ma1kg10
雨蚀叶片质心到旋叶连接盘形心的距离l1m0.6
转子偏心距e1m1×10-4
旋叶连接盘偏心距e2m1×10-3
转子阻尼系数c1N·s/m2×102
旋叶连接盘阻尼系数c2N·s/m2×102
深沟球轴承Ⅰ刚度k1N/m1×108
深沟球轴承Ⅱ刚度k2N/m1×108
表1  转子-雨蚀叶片系统参数
图3  ω=150 rad/s时转子和雨蚀叶片的轴心轨迹、振动位移时域图和Poincaré截面
图4  ω=350 rad/s时转子和雨蚀叶片的轴心轨迹、振动位移时域图和Poincaré截面
图5  转子-雨蚀叶片系统的自抗扰控制结构
图6  转子-雨蚀叶片系统的自抗扰解耦控制过程
图7  自抗扰解耦控制下转子-雨蚀叶片系统的振动位移
图8  自抗扰解耦控制下转子-雨蚀叶片系统的控制量和扰动估计
图9  高速耐雨蚀测试装置结构
图10  采用自抗扰解耦控制前雨蚀叶片的振动位移时域图
图11  采用自抗扰解耦控制后雨蚀叶片的振动位移时域图
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