中国机械工程

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电动静液压作动器主动悬架力跟踪控制研究

寇发荣;王哲;杜嘉峰;李冬;许家楠;何凌兰   

  1. 西安科技大学机械工程学院,西安,710054
  • 出版日期:2017-12-25 发布日期:2017-12-21
  • 基金资助:
    国家自然科学基金资助项目(51775426,51275403);
    陕西省教育厅服务地方专项计划资助项目(17JF017)
    National Natural Science Foundation of China (No. 51775426,51275403)

Study on Force Tracking Control of EHA Active Suspensions

KOU Farong;WANG Zhe;DU Jiafeng;LI Dong;XU Jianan;HE Linglan   

  1. School of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an,710054
  • Online:2017-12-25 Published:2017-12-21
  • Supported by:
    National Natural Science Foundation of China (No. 51775426,51275403)

摘要: 建立了1/4主动悬架和EHA主动悬架系统的数学模型,分析了EHA作动器中的无刷直流电机对该系统的影响。提出了一种基于主环LQG理想力控制器和内环电机电流控制器组成的力跟踪控制策略,设计了EHA主动悬架硬件控制器,并进行了仿真和台架试验。结果表明,力跟踪控制能够使电机输出的实际主动力接近理想主动力,改善了EHA主动悬架的动态特性,验证了所设计的控制策略和硬件控制器的可行性。

关键词: 电动静液压作动器, 主动悬架, 力跟踪控制, LQG控制

Abstract: The mathematical models of 1/4 active suspension and EHA active suspension system were established, and the influences of brushless DC motor in EHA on the system were analyzed. A force tracking control strategy was proposed based on the main loop LQG ideal force controller and the internal loop motor current controller. The controller hardware of EHA active suspension was designed, and the simulations and bench tests were carried out.The results show that the force tracking control may make the actual active forces of the motor output real-time tracking of the ideal active forces, and the feasibility of the control strategy and controller is verified.

Key words: electro-hydrostatic actuator(EHA), active suspension, force tracking control, linear-quadratic-Gaussian control

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