一种确定车辆悬架LQG控制加权系数的方法

A METHOD FOR CHOOSING WEIGHTS IN A SUSPENSION LQG CONTROL

针对车辆悬架LQG控制,提供一种确定与车辆平顺性各评价指标相关加权系数的方法。根据特定工况下对车辆平顺性各评价指标的具体要求,利用层次分析法,确定它们的主观加权比例系数;根据特定工况下原型悬架的性能统计数据,确定各评价指标的同尺度量化比例系数;结合各评价指标的主观加权比例系数与同尺度量化比例系数,确定LQG控制中与平顺性各评价指标相关的最终加权系数。运用实例表明:使用该方法确定加权系数的LQG控制效果明显,且适用性强。

A method for choosing weights of evaluating indexes for ride comfort in a vehicle suspension LQG control is presented.Firstly,according to the specific demand for ride comfort under a given working condition,subjective weights of evaluating indexes can be determined using AHP method;secondly,according to the performance data of a passive antitype suspension under the given working condition,objective weights of evaluating indexes can be determined,lastly,the general weights of evaluating indexes of ride comfort in a vehicle suspension LQG control can be obtained based on the subjective ones and objective ones.It is shown with an example that this method is valid and applicable.