The invention discloses a multi-process scheme
planning method based on a combination weighting method. The multi-process scheme
planning method comprises the following steps: analyzing various factors influencing the quality of a process scheme, and establishing two
layers of evaluating systems; carrying out standardizing treatment on evaluating index data by adopting a subjection function; respectively weighting evaluating indexes by adopting a fuzzy integrated evaluating method and a variation coefficient method based on
process knowledge data; in combination with the weighting results of the fuzzy integrated evaluating method and the variation coefficient method, taking minimal sum of weight error squares as a target function, and calculating combination weight by adopting a Lagrangian
multiplier method; based on the combination weight, in combination with a gray relative
analysis method, according to the design of two
layers of evaluating structures, establishing two
layers of gray relative
analysis models, and selecting an optimal process scheme by correlation degree of candidate process schemes obtained by calculating the models. According to the multi-process scheme
planning method disclosed by the invention, the distribution deviation of optimized target weights is reduced, and the performability of the process scheme is improved.