基于混合遗传算法的转子系统优化设计

王东华 刘占生 窦唯

振动与冲击 ›› 2009, Vol. 28 ›› Issue (5) : 87-91.

PDF(643 KB)
PDF(643 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (5) : 87-91.
论文

基于混合遗传算法的转子系统优化设计

  • 王东华 刘占生 窦唯
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ROTORDYNAMICS OPTIMIZATION BASED ON A HYBRID GENETIC ALGORITHM

  • WANG Donghua, LIU Zhansheng, DOU Wei
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摘要

转子系统的临界转速是航空发动机设计过程中的重要参数。在临界转速远离工作转速时,转子系统才能安全可靠的工作。如何设计转子系统的结构使设计后的临界转速达到要求,而且结构改变量尽可能小,是转子动力学最优化设计研究的重点之一。在分析已有研究模型的基础上增加约束条件提出一种更完善的临界转速最优化设计模型,无需考虑设计变量个数和设计临界转速个数的关系,及预先给定的临界转速是否可在设计变量对应的临界转速空间内取到,均能找到满意的设计方案。针对该模型的最优化求解,设计出一种结合遗传算法和复合形方法的混合遗传算法,可以有效的提高搜索到全局最优解的搜索速度。对一转子系统进行临界转速优化设计,验证了该模型可以有效的取得满足设计要求的最优设计方案,适用于工程实际的转子系统临界转速最优化设计过程。

Abstract

Critical speeds are important factors during the design process of rotating machinery. If the critical speeds do not comply with the requirements of operation safety, the rotor system configuration must be adjusted. How to adjust the rotor system configuration to get the desired critical speeds and change the configuration least at the same time is a focus of rotordynamics. An improved model for optimally design the critical speeds of a rotor system is presented, not need to consider the relationship between the number of critical speeds and that of design variables, and whether the desired critical speeds could be approached to. Aiming to solve the complicated model, a genetic-complex shape combined algorithm is designed with better search speed and higher accuracy. The result of a case study on a rotor system shows that the improved model can get the optimal solution and may be applicable in practical rotor system design process.

关键词

遗传算法-复合形混合算法 / 转子系统 / 临界转速 / 优化设计

Key words

Genetic algorithm / Complex method / Rotor system / Critical Speeds / Optimization design

引用本文

导出引用
王东华 刘占生 窦唯. 基于混合遗传算法的转子系统优化设计[J]. 振动与冲击, 2009, 28(5): 87-91
WANG Donghua;LIU Zhansheng;DOU Wei. ROTORDYNAMICS OPTIMIZATION BASED ON A HYBRID GENETIC ALGORITHM[J]. Journal of Vibration and Shock, 2009, 28(5): 87-91
中图分类号: TH133.3   

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