Engineering Character Optimization Of Product Service Systems Based On QFD

In order to cope with the fierce market competition, product providers beginto seek for additional services to promote the value of products, and serviceproviders are also trying to provide high quality products to enhance the value ofservices. The barrier between products and services is gradually disappeared. Inthis background, the concept of Product Service System emerges as the timesrequire. It is focused on customer requirements, through the combination designof products and services to promote the customers' satisfaction, reduce theconsumption of resources, and realize the sustainable development of theeconomy.This article mainly studied Product Service System conceptual designprocess. A product service system design framework was put forward, whichconsisted of customer demands domain, engineering characteristics domain andsystem solution domain. The conceptual design process of product servicesystem was transformed into a three domains layer mapping problem. On thisbasis, the domain to domain mapping problem of customer demand and engineering characteristics is the focus of this article. In order to ensure theeffective transmission from customer demands to engineering characteristics inProduct Service System design, a new improved method to calculate theimportance of customer demands of Quality Function Deployment was proposed,and a product service system engineering characteristics optimization model wasput forward based on product engineering characteristics Quality FunctionDeployment optimization. In the traditional calculation for customer demands'importance, there are still some disadvantages, such as strong subjectivity,hardly carried out, ignoring market competition situation and so on. Therefore, amodificatory method for the calculation of customer requirements importancewas put forward, combining rough set data reduction and importanceperformance analysis. The engineering characteristics optimization model ofProduct Service System is mixed of product engineering characteristics andservices engineering characteristics, and the relationship between productengineering characteristics and services engineering characteristics iscomplicated. According to this reason, a hybrid optimization model wasproposed, which could deal with mixture objects of products continuousvariables, products discrete variables, services continuous variables, and servicediscrete variables.The study established a new framework for Product Service System concept design, and provided method support for the effective transferring anddistribution from customer demands to product engineering characteristics andservices engineering characteristics. The proposed method was applied in anenterprise PSS case of Plasma Enhanced Chemical Vapor Deposition, whichhelp the enterprise to achieve great success in equipment research and designstage.