for the lack of a single theory to solve the problem of conceptual design, established the product concept design process which based on the integrated toc/triz;
⑷针对单一理论在解决概念设计问题中的不足,建立了基于toc/triz理论集成的产品概念设计流程;
mechanical product concept design is complex and ill-structured. a complex mechanical system can be hierarchically decomposed into some simple sub-systems, with each sub-system designed differently.