一个可变的地平线模型预测控制,用于带有空气弹的磁铁雷奥学半活性悬挂
Gang Li1,2, Lin Zhong1,2, Wenjun Sun1,2
1Key Laboratory of Vehicle Intelligent Equipment and Control of Nanchang City, East China Jiaotong University, Nanchang 330013, China.
Sensors (Basel, Switzerland)
|November 9, 2024
概括
一种新的可变地平线模型预测控制 (VHMPC) 方法增强了半活性悬浮. 这种先进的控制策略优化了各种道路条件下的悬挂性能,提高了行驶舒适度和稳定性.
科学领域:
- 汽车工程 汽车工程
- 控制系统 控制系统
- 机械振动 - 机械振动
背景情况:
- 半活性悬浮的传统模型预测控制 (MPC) 在不同条件下难以实现最佳控制.
- 带有气弹的磁铁神经 (MR) 半活性悬浮具有潜力,但需要先进的控制策略.
- 现有的方法缺乏适应不同道路激发频率的适应性.
研究的目的:
- 开发和评估可变地平线模型预测控制 (VHMPC) 方法,用于带有气弹的MR半活性悬挂系统.
- 为了优化悬挂控制效果在不同的和不断变化的道路条件.
- 通过自适应控制来提高驾驶舒适度和车辆稳定性.
主要方法:
- 建立了MR阻尼器和气弹的数学模型.
- 开发了MR阻尼器的前向模型,使用了改进的高压触角模型.
- 在MR阻尼器的反向模型中使用了适应性模糊神经网络.
- 模拟了道路激发频率与悬挂控制效应之间的关系.
- 获得了各种条件的最佳预测地平线.
- 设计的VHMPC可以根据道路激发频率动态调整预测地平线.
主要成果:
- 与混合条件下的传统MPC相比,VHMPC在混合条件下表现出优异的性能,将悬浮的光滑度提高了2.614%.
- VHMPC显著降低了垂直振动加速峰值的11.849% (正值) 和6.938% (负值).
- 在变速道路条件下,VHMPC提高了弹质量加速度,动态轮胎变形和悬架偏移,分别为7.191%,7.936%和22.222%.
结论:
- 拟议的VHMPC方法有效地适应不同的道路激发频率,优于传统的MPC.
- 通过减少振动和改善悬挂动态,VHMPC显著提高了驾驶舒适度和稳定性.
- 这种自适应控制方法对具有气弹的MR半活性悬挂系统来说是一个重大进步.
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