Fuzzy Robust Optimal Design Of Loader Gear Box Based On Genetic Algorithm

The robust design method is a kind of engineering design method which have developed in recent years, the guidelines are the use of the situation when factors (causes) change in a small scale as a result of modest deterioration variables (results) do not affect the sensitivity of product performance, quality and cost make the best integrated into the design to improve product quality and reduce costs.The essence of fuzzy steady optimization design,which is based on the steady optimization design method basic principle, through the introduction fuzzy mathematics, fully using the computer-aided design as a develop platform, to enhances the design method the usability and the rated capacity.The steady design method is based on the model analysis steady design.According to the different models, may grow different analysis methods, but these analysis methods' design process is similar.The article have comprehensive introducted the genetic algorithm, the fuzzy synthesis judgment, and review the history of steady design systematically.Based on the full research of planetary transmission, according to the project request toestablish the car loader gear box's fuzzy steady optimization objective function. Through the fuzzy steady design, overcomes or maximum limit reduces the product quality fluctuation which these element of certainty causes. Then, carries on the car loader gear box fuzzy optimization system design in the MATLAB genetic algorithm toolbox's environment,analyze to optimal ends by robust method of Taguchi, fuzzyed the fuzzy optimization's optimal solution,establishes the inner table and outer table separately in according to the actual situation to the controllable factor and the erroneous factor,figure out the SN ratio of different testing plan by the inner table and outer table,uses the fuzzy mathematics theoretical analysis method to carry on the generalized analysis judgment,determination the optimum parameter by each factor fuzzy quality synthetic evaluation matrix . Finally,compared with the result of designs to explain the feasibility and superiority of fuzzy steady optimization design.