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H-infinity control of integrated rollover prevention system based on improved lateral load transfer rate

机译:基于改进的横向载荷转移率的集成翻转防治系统H-Infinity控制

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摘要

A rollover dynamic model that merges the active front steering model and differential braking model is established in this paper. After analyzing and improving the existing rollover evaluation method, a new evaluation method that takes both sprung mass and under-sprung mass into consideration is proposed. The reliability of the improved LTR (lateral load transfer rate) is confirmed by simulation results obtained from MATLAB and CARSIM where, all of three evaluation methods are taken under the same condition. The accuracy of the rollover evaluation index depends on the centroid height of under-sprung mass and the ratio of under-sprung mass and under-sprung mass. In order to achieve the desired tracking effect and anti-jamming capability, an integrated rollover control system based on active steering and differential braking is designed where a H-infinity controller is adopted. The results of simulation under J-turn condition indicate that the control system has strong stability and robustness. When the vehicle is under the risk of rollover and reaches the setting threshold, the designed H-infinity controller will actively keep the vehicle under the critical state.
机译:在本文中建立了合并主动前转向模型和差动制动模型的翻转动力模型。在分析和改进现有的滚动评估方法后,提出了一种新的评价方法,以考虑簧上质量和簧上的质量。通过从Matlab和Carsim获得的仿真结果来确认改进的LTR(横向载荷转移率)的可靠性,其中所有三种评估方法都在相同的条件下进行。翻转评估指标的准确性取决于簧下质量低的质心高,簧下质量欠肿块和涌出的肿块的比率。为了实现所需的跟踪效果和抗干扰能力,设计了一种基于主动转向和差动制动的集成翻转控制系统,其中采用了H-Infinity控制器。在j转条件下模拟结果表明控制系统具有强的稳定性和鲁棒性。当车辆处于滚动的风险并达到设定阈值时,设计的H-Infinity控制器将主动地将车辆保持在临界状态下。

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