A multi-objective performance optimization method is proposed, and the problem that single structural parame- ters of small fan balance the optimization between the static characteristics and the aerodynamic noise is ...A multi-objective performance optimization method is proposed, and the problem that single structural parame- ters of small fan balance the optimization between the static characteristics and the aerodynamic noise is solved. In this method, three structural parameters are selected as the optimization variables. Besides, the static pressure efficiency and the aerodynamic noise of the fan are regarded as the multi-objective performance. Furthermore, the response surface method and the entropy method are used to establish the optimization function between the op- timization variables and the multi-objective performances. Finally, the optimized model is found when the opti- mization function reaches its maximttm value. Experimental data shows that the optimized model not only en- hances the static characteristics of the fan but also obviously reduces the noise. The results of the study will provide some reference for the optimization of multi-objective performance of other types of rotating machinery.展开更多
系统性红斑狼疮（system ic lupus erythem atosus,SLE）是一种常见的累及多系统、多器官的自身免疫性疾病,属于中医学阴阳毒、红蝴蝶疮、茱萸丹等范畴。本病病因病机复杂多变,临床表现错综复杂,影响中医辨证的准确性和可重复性。证候...系统性红斑狼疮（system ic lupus erythem atosus,SLE）是一种常见的累及多系统、多器官的自身免疫性疾病,属于中医学阴阳毒、红蝴蝶疮、茱萸丹等范畴。本病病因病机复杂多变,临床表现错综复杂,影响中医辨证的准确性和可重复性。证候要素作为不可拆分的证候表达形式,是由四诊信息集合直接表达的病机单元[1],同时还是方药配伍对应的重要内容[2],具有可应证组合的特点。本研究以证候要素为切入点,展开更多
基金supported by Open Foundation of Zhejiang Provincial Top Key Academic Discipline of Mechanical EngineeringZhejiang Sci-Tech University Key Laboratory(ZSTUME 01A04)
文摘A multi-objective performance optimization method is proposed, and the problem that single structural parame- ters of small fan balance the optimization between the static characteristics and the aerodynamic noise is solved. In this method, three structural parameters are selected as the optimization variables. Besides, the static pressure efficiency and the aerodynamic noise of the fan are regarded as the multi-objective performance. Furthermore, the response surface method and the entropy method are used to establish the optimization function between the op- timization variables and the multi-objective performances. Finally, the optimized model is found when the opti- mization function reaches its maximttm value. Experimental data shows that the optimized model not only en- hances the static characteristics of the fan but also obviously reduces the noise. The results of the study will provide some reference for the optimization of multi-objective performance of other types of rotating machinery.
文摘系统性红斑狼疮（system ic lupus erythem atosus,SLE）是一种常见的累及多系统、多器官的自身免疫性疾病,属于中医学阴阳毒、红蝴蝶疮、茱萸丹等范畴。本病病因病机复杂多变,临床表现错综复杂,影响中医辨证的准确性和可重复性。证候要素作为不可拆分的证候表达形式,是由四诊信息集合直接表达的病机单元[1],同时还是方药配伍对应的重要内容[2],具有可应证组合的特点。本研究以证候要素为切入点,
