A grey residual error model was established for predicting the variation of color difference of automobile bumper coating exposed in damp heat environment.The results showed that the maximum relative error of its simulation value with respect to the measured value is 4.140 0％,which is better than that (17.076 9％) of the grey GM(1,1) prediction model.It is proved that the grey residual error model can be used to predict the aging behavior of automobile bumper coating.%构建了残差灰色预测模型,对湿热环境自然曝晒下汽车保险杆涂层的色差变化情况进行预测.结果表明:该模型的色差模拟值与实测值的最大相对误差为4.140 0％,优于灰色GM(1,1)预测模型的预测结果(最大相对误差为17.076 9％),可以用于汽车保险杠涂层老化行为的预测.
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