Study on problem-solving theory based on QFD,TRIZ and Taguchi methods

To overcome traditional QFD's weakness of not being a problem-solving tool,an improved theory is proposed based on HOQ of QFD,innovated by TRIZ and measured by the loss function of Taguchi methods.Considering function is the common objective of QFD,TRIZ and Taguchi Methods,the way to obtain the function and the principles to eliminate contradictions between functions is scientifically ascertained through substance-field analysis and contradiction matrix of TRIZ.Optimum parameters level is determined by design of experiment and loss function.A detailed step is given to the problem-solving theory.