| Summary: | 碩士 === 國立高雄第一科技大學 === 工業設計研究所 === 100 === In this study, a new type of hinge for automatic return door has been designed and then the dimensions of hinge were optimized by multi-objective optimization method. Spring has been selected as the driving power for more inexpensive then the motor or hydraulic. Besides, opened for 90 degrees and fixed, close completely for all life cycle, and smaller impact force while returning have been chosen as the specifications. Through the study , we complete the concept design with the drawing software Solidworks first. Then ,simulate the motion by the Mechanism Motion Analysis software MSC Visual Nastran Desktop to review the driving feasibility. Finally, the spring constant, the slanted angle of cam and the groove diameter have been chosen as the parameters. The smaller the better of return time and impact force were indicated as object functions. The optimal design has been complete by the multi-objective optimization method of Robust Multiple-Criteria Optimization, and the range of the withstanding weight of the door has also been found.
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