Robust control of rack dynamic clearance in steer-by-wire system
线控转向系统齿条动态间隙的鲁棒控制

摘要

线控转向系统是现代汽车技术中的重要组成部分，其动态性能的精确控制对于提升驾驶安全性和操控性能至关重要。在此背景下，齿条动态间隙的鲁棒控制方法成为研究的热点问题。传统控制方法往往难以有效应对系统的不确定性和外部干扰。本文提出了一种基于鲁棒控制理论的齿条动态间隙控制方法，通过构建不确定性模型和外部干扰模型，设计了鲁棒控制器以保持系统的稳定性和动态性能。仿真结果表明，该方法能够显著改善齿条动态间隙的控制精度，增强系统对外部干扰的抗干扰能力。

Abstract

The steer-by-wire system is a crucial component of modern automotive technology, and precise control of its dynamic performance is vital for enhancing driving safety and handling performance. In this context, the robust control method for rack dynamic clearance has become a hot research topic. Traditional control methods often struggle to effectively address system uncertainties and external disturbances. This paper proposes a rack dynamic clearance control method based on robust control theory. By constructing uncertainty models and external disturbance models, a robust controller is designed to maintain system stability and dynamic performance. Simulation results show that this method can significantly improve the control accuracy of rack dynamic clearance and enhance the system's anti-disturbance capability against external disturbances.