基于非线性主动干扰排斥机制的滑动模式控制以提高电动辅助方向盘性能
Tuan Anh Nguyen1, Tung Lam Nguyen2
1Faculty of Mechanical Engineering, Thuyloi University, Hanoi, Vietnam.
PloS one
|April 11, 2025
概括
本研究引入了电动动力辅助方向盘 (EPAS) 系统的新型非线性稳定控制,显著减少错误并提高车辆的稳定性. 先进的方法有效地减轻干扰,提高驾驶舒适度.
科学领域:
- 汽车工程 汽车工程
- 控制系统工程 控制系统工程
- 非线性控制理论 不线性控制理论
背景情况:
- 电动动力辅助方向盘 (EPAS) 系统对于车辆的稳定性和安全性至关重要.
- 现有的控制方法往往无法解决外部干扰,导致信号跟踪错误和不利的系统影响.
- 传统的算法无法充分管理EPAS性能的复杂性.
研究的目的:
- 为EPAS系统设计一个强大的非线性控制机制,克服传统方法的局限性.
- 通过尽量减少信号跟踪错误和减轻外部干扰来提高车辆的稳定性,安全性和驾驶舒适性.
- 引入非线性扩展状态观察器 (NESO) 和非线性跟踪差分器 (NTD) 等新型组件,以提高控制性能.
主要方法:
- 实施一个结合的滑动模式控制 (SMC) 和非线性主动干扰拒绝控制 (NADRC) 战略.
- 使用非线性扩展状态观察器 (NESO) 和非线性跟踪分辨器 (NTD) 进行增强的观测和信号处理.
- 基于非线性函数的创新辅助特征曲线的开发,以优化车辆动态.
主要成果:
- 拟议的控制器在30公里/小时时速时达到约2%的稳定状态误差,在70公里/小时时速时达到3.5%的稳定状态误差 (不包括转向电机电流).
- 对状态变量的观察错误低于1.4%,干扰错误约为6.9%.
- 该系统表现出了对常见问题 (如超标,喋喋不休和传感器噪声) 的弹性.
结论:
- 拟议的非线性强有力的控制机制有效地提高了EPAS系统的性能.
- 整合NESO,NTD和非线性特征曲线可以提高车辆的稳定性,安全性和驾驶舒适性.
- 先进的控制策略为EPAS申请提供了比传统方法显著的改进.
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