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串联式混合动力汽车起-停巡航控制

Keywords: 电动汽车,起-停巡航,非线性干扰观测器,滑模控制,自适应控制,Lyapunov方法

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Abstract:

以串联式混合动力汽车BJUT-SHEV为研究对象,针对起停工况下模型参数摄动和外部干扰等不确定性因素对控制效果的影响,提出一种基于非线性干扰观测器理论的自适应滑模控制方法.通过引入非线性干扰观测器对系统中存在的不确定进行估计,利用估计结果补偿滑模控制器输出,以提高滑模控制器的控制性能及鲁棒性;设计自适应律对切换增益自适应调节,以削弱滑模控制器的输出抖振.基于Lyapunov理论证明了该方法的稳定性,最后通过仿真实验进一步验证了该方法的可行性及有效性.

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