Research on the Weights of Subjective Evaluation Metrics of Automobile Squeak & Rattle based on Entropy Method

Abstract

This study aims to objectively quantify the weights of subjective evaluation metrics for automobile squeak and rattle (S&R) using the entropy method. The paper first elaborates on the theoretical foundation and calculation steps of the entropy method, then integrates the core principles of the Analytic Hierarchy Process (AHP) to construct a comprehensive subjective evaluation framework. The test roads and operating conditions for subjective evaluation were clearly defined. In the evaluation experiment, three experienced engineers assessed five passenger vehicles on a proving ground using a 10-point scoring system. The collected rating data were processed using the entropy method to determine the weights of each metric, followed by the calculation of the overall subjective evaluation score for each vehicle. The results demonstrate that the entropy method, relying on objective data, effectively determines metric weights with high objectivity, providing a more scientific assessment approach for target setting in the early stages of vehicle development.