A Selection Model for Multiple Design Schemes of Complex Product

Design scheme selection is an important step and strategic issue for complex product development. However, it is more difficult to evaluate scheme directly due to product complexity and evaluating process uncertainty. In this paper, a novel selection model is proposed through quality function deployment (QFD) with group decision-making. In this model, each parts scheme which outline design schemes are divided into is evaluated through group decision-making, and parts weights are determined by QFD approach. All design schemes are order-sorted and selected based on multiplying parts scheme evaluation values with weights of parts. This model is illustrated with a case concerning the product design scheme selection of horizontal directional drilling.