汽车座椅座垫非线性模型参数辨识研究

摘要

the parameter detection of automobile seat cushion non-linear model is researched based on FFRLS. At first, the non-linear one degree of freedom dynamic model of automobile seat is built up. Then ride comfort test of random input is accomplished. The time histories of driver's seat and floor are measured. Finally the parameter detection of automobile seat non-linear model based on FFRLS is completed and anglicized. The results will provide technology support to study the ride comfort of seat, optimization and control of automobile ride comfort.%基于遗忘因子递推最小二乘法对汽车座椅座垫非线性模型参数辨识展开研究.首先根据汽车座椅座垫非线性特性,建立驾驶员处的人体-座椅单自由度非线性动力学模型;然后,在沥青路面上对某款轿车进行随机输入下的汽车平顺性试验,测量得到驾驶员座椅和座椅底部地板垂向加速度时间历程;最后基于遗忘因子递推最小二乘法,利用试验实测数据对座椅座垫非线性模型参数进行辨识与分析,分析结果将为座椅乘坐舒适性改善、汽车平顺性优化及控制研究等提供技术支持.