关键词: 概念设计, 评价, 主成分分析, 层次分析, 顾客需求

Abstract: Principal Component Analysis（PCA） method has the weakness of over-objective view toward weight determination and can’t reflect different customer groups’ requirement.In order to overcome the weakness，a new method called Improved Principal Component Analysis combining PCA with Analysis Hierarchy Process（AHP） is proposed.It extracts the evaluation indices of customer requirement through the product market research.It adopts AHP to determine the index weight of different customer groups’ requirement，weights to the data after dimensionless，then adopts PCA to evaluation.This improved method can be used in evaluation for different customer groups’ requirement.At the same time，it adopts equalization method in dimensionless treatment to reduce the loss of information in data.The Haier refrigerator conceptual design schemes evaluation results show that this new method is reliable.

Key words: conceptual design, evaluation, Principal Component Analysis, Analytic Hierarchy Process, customer requirement