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中南大学学报(自然科学版)

Journal of Central South University

第50卷    第4期    总第296期    2019年4月

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文章编号:1672-7207(2019)04-0854-10
多轴车辆轮桥加载试验台的解耦控制实验研究
王慧1, 2,赵国超1,金鑫1

(1. 辽宁工程技术大学 机械工程学院,辽宁 阜新,123000;
2. 哈尔滨工业大学 机电工程学院, 黑龙江 哈尔滨, 150001
)

摘 要: 为研究多轴车辆轮边和传动桥的工作特性和可靠性,模拟四轴车辆的实际工况,基于二次调节技术试制轮桥模拟加载试验台。针对轮桥试验台驱动转速和输出转矩存在的耦合干扰问题,建立系统传递函数并求解出传递函数之间的对角矩阵,利用对角矩阵对系统进行解耦控制,通过轮桥模拟加载试验台进行耦合干扰实验及解耦控制实验。研究结果表明:通过对角矩阵对试验台进行解耦控制,能有效解决驱动转速和输出转矩之间的耦合干扰问题,本实验中驱动转速误差减小78%,二次输出转矩误差减小67%,轮边输出转矩误差减小29%,解耦后提高了试验台可控性,可使试验台满足车辆轮桥的动态模拟加载实验的需求,研究结果可为此类轮桥试验台的设计及模拟加载实验提供一定的实验基础。

 

关键字: 多轴车辆;传动桥;试验台;解耦控制;模拟加载

Experimental study on decoupling control for wheel-bridge simulated test bench of multiaxial vehicles
WANG Hui1, 2, ZHAO Guochao1, JIN Xin1

1. School of Mechanical Engineering, Liaoning Technical University, Fuxin 123000, China;
2. School of Mechanical and Electronic Engineering, Harbin Institute of Technology, Harbin 150001, China

Abstract:In order to study the working characteristics and reliability of multiaxial vehicles'''' wheel-bridge, the actual working conditions of the four-axle vehicle were simulated and the wheel-bridge simulated loading test bench was established based on the secondary regulation technology. In view of the coupled interference problem between the driving speed and output torque of wheel-bridge test bench, the system transfer function was established, and the diagonal matrix between the transfer functions was solved. The diagonal matrix was used to decoupling the system and the coupled interference experiment and decoupling control experiment were carried out by the wheel-bridge test bench. The results show that the decoupling control of the test bench by the diagonal matrix can effectively solve the coupled interference problem between the driving speed and the output torque. In this test, the drive speed error is reduced by 78%, the secondary output torque error is reduced by 67% and the wheel side output torque is reduced by 29%. The test bench has better controllability by using diagonal matrix decoupling control, and it can meet the demand of vehicle wheel-bridge dynamic simulation loading experiment. The results can provide a certain experimental basis for the design of this kind of wheel bridge test bench and the simulated loading experiment.

 

Key words: multiaxial vehicle; drive axle; test bench; decoupling control; simulated loading

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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