Abstract: The human-machine interface design and optimization consists of the transformation from user demand to design demand and the formation of the best program based on design demand. Evaluation is significant for design optimization, while in the existing studies on evaluation method, the above two parts are performed in different stages, leading to inefficiency in data sharing. For this problem, an evaluation method of human-machine interface based on quality function deployment (QFD) and the PUGH decision matrix was put forward. Firstly, the Analytic Hierarchy Process was adopted to produce the weight of user demand, and corresponding user needs were mapped to relevant design requirements based on interface product features. Then a house of quality model was built based on QFD. According to the matrix of the degree of correlation between user requirements and design requirements, the weight was obtained, and the user’s subjective description was transformed into the design requirements. Finally, the design requirements and weights derived from the QFD were employed as the criteria for PUGH decision-making evaluation, the best scheme was chosen, thus completing a comprehensive evaluation of interface design. Taking the interface of the household treadmill as an example, it shows the effectiveness of the proposed method, and provides decision-making method and optimization ideas for the whole process of human-machine interface implementation. 

Key words: quality function deployment, PUGH decision matrix, user demand, human-machine interface evaluation