Evaluation of Vehicle Body Styling Based on AHP and EWM Method

Abstract

To reduce the error of subjective description of abstract perceptual images in the process of automobile shape design, the paper puts forward an ideal and reliable evaluation method which calculates the weighted scores through the EMW and AHP method in both the subjective and objective aspects to determine the final design scheme. The subjective weights of each index are obtained by establishing the judgment matrix through AHP method to quantify the effects of abstract semantics in the automobile modeling descriptions and the consistency checking method is used to verify the coordination of indexes in the matrix. The objective weights of each index are obtained through EWM theory by calculate the information entropy of each evaluation index. The combination weights are optimized by the Lagrange multiplier method and the results are applied to the evaluation of the body styling design to determine the final design solution. The method takes four concept car body preliminary modeling solutions as the evaluation object, and selects the best design solution while providing a reliable reference for the subsequent car modeling design direction, and the evaluation result reflect both the subjective and objective evaluation of car modeling, which improves the evaluation accuracy and provide psychological evidence.