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<p>To address the challenge of insufficient robustness in the road feel system of steer-by-wire, this paper presents a novel road feel calculation model that incorporates aligning torque and steering wheel friction torque. The proposed model improves accuracy by optimizing the steering gain using an enhanced dung beetle optimization algorithm under predefined parameter constraints. Furthermore, sliding mode control with an improved control law is employed to minimize the output error of the road feel motor. Finally, a simulation integrating MATLAB, CarSim, and PreScan, alongside a comparative experiment on a steer-by-wire test bench, is conducted. The research findings demonstrate that the enhanced road feel model exhibits significantly improved robustness.</p>

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Study of the road feel model of a steer-by-wire system based on an improved dung beetle optimization algorithm

  • 期刊论文

  • 发表日期：

    2025年1月28日

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  • Ping Xiao,
  • Zhenyu Fang,
  • Kai Jin,
  • Rongyun Zhang,
  • Aixi Yang

摘要

To address the challenge of insufficient robustness in the road feel system of steer-by-wire, this paper presents a novel road feel calculation model that incorporates aligning torque and steering wheel friction torque. The proposed model improves accuracy by optimizing the steering gain using an enhanced dung beetle optimization algorithm under predefined parameter constraints. Furthermore, sliding mode control with an improved control law is employed to minimize the output error of the road feel motor. Finally, a simulation integrating MATLAB, CarSim, and PreScan, alongside a comparative experiment on a steer-by-wire test bench, is conducted. The research findings demonstrate that the enhanced road feel model exhibits significantly improved robustness.