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mixed-optimization
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  相似匹配句对
     On Mixed Economy
     论混合经济
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     type C: mixed.
     C型:混合型。
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     Ready-mixed concrete
     广东省预拌混凝土与机械发展调查报告
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     TECHNIQUE OF MIXED-CHARGING FOR B. F.
     高炉矿焦混装技术
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     Optimization of the Mixed Size Prescription
     混合浆液配方的优化设计
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By making use of the variational analysis, the present paper derives the analytical expressions of sensitivity of structural responses such as structural compliance under static loading, natural vibration frequency and buckling load of symmetrically laminated plates with respect to the fiber's orientation of the individual layers. Based on the sensitivity information, the optimality criterion for the optimum fiber's orientation is derived and applied to show that under rather general plate conf igurtiaon, loading...

By making use of the variational analysis, the present paper derives the analytical expressions of sensitivity of structural responses such as structural compliance under static loading, natural vibration frequency and buckling load of symmetrically laminated plates with respect to the fiber's orientation of the individual layers. Based on the sensitivity information, the optimality criterion for the optimum fiber's orientation is derived and applied to show that under rather general plate conf igurtiaon, loading and boundary conditions the number of different angles in an optimum symmetrically laminated plate is no more than 4. For four example problems, a large amount of FEM calculations of static compliance under different combinations of fiber's orientations has been done to obtain the contours and surfaces of compliance; which illustrate that the struetural compliance is a non-convex function of the fiber's orientations. Therefore, special care must be taken in order to obtain global optimum design of laminated plates by numerical method. Finally a mixed optimization method combining mathmatical programming and optimality criterion appproach is suggested and applied to minimize the structural compliance of composite plates. Two numerical results are given to show the performance of the new algorithm.

本文给出了对称铺设的复合材料层合板的结构反应(静载下结构的柔韧性*、自振频率及屈曲载荷)对各层纤级铺设角的灵敏度,并给出了最优铺设角应满足的准则。对最优化准则的分析表明,在很一般的条件下,任一最优层合板最多只有四个不同的铺设角度。本文还对静载下矩形板的柔韧性作了大量数值计算,结果有明柔韧性是铺设角的非凸函数;最后本文建议了将数学规划法和准则法结合的一混合优化方法。用它对铺设角进行优化,数值例子说明这种方法是成功的。

A kind of mixed optimization method is proposed in this paper for the optimizationproblems identifying model with many parameters, unkown range of parameters, implicitobjective function and so on. The method is effectively applied to identifying theparameters of the model of dynamic cushioning performance of foamed plastic cushionsfor packaging.

有一类模型参数,由于取值间不明确,目标函数不属显函数,目标函数计算工作量大,采用通常优化方法很难求解。研究提出一种利用知识信息识别模型参数的混合优化方法。该方法用于识别泡沫塑料包装衬垫缓冲性能模型参数时十分有效。

A mixed optimization algorithm is proposed for ship course keeping controller design based on the genetic algorithm (GA) and H∞ loop-shaping technique. The GA is adopted to optimize the loop-shaping weighing functions, so it is avoided to select the weighing functions by a trial-error method based on the designer′s experience. This method makes the design criteria in both frequency and time domain can be achieved easily. Simulation results demonstrate the effectiveness of the presented algorithm.

提出一种GA和H∞混合优化的般舶航向控制器设计新方法。该方法采用H∞环路成形技术设计船舶航向控制器,成形权函数采用遗传算法进行优化,从而避免了凭经验试凑权函数的盲目性,使控制器的设计系统化,且简单易行。仿真结果表明了该设计方法的有效性

 
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