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	基于GA/LM混合优化的直升机全机配平算法
	吴超 ; 谭剑锋 ; 王浩文 ; 倪先平 ; WU Chao ; TAN Jian-feng ; WANG Hao-wen ; NI Xian-ping
	2016-03-30 ; 2016-03-30
关键词	直升机 优化配平 GA和LM混合算法 helicopter optimal trim GA and LM hybrid algorithm V275.1
其他题名	Optimal trim for helicopter based on GA and LM hybrid algorithm
中文摘要	基于牛顿迭代法的直升机配平算法简单、高效,但配平结果依赖于初始值。为减小对初始值的依赖,基于直升机飞行动力学模型,通过构造优化目标函数,将全机配平问题转化为优化问题,并针对非线性方程组全局最优解不唯一,将GA算法计算的配平较优解作为LM算法的初值,并构建解空间约束条件,提出一种基于GA/LM混合的优化配平算法。通过计算UH-60A直升机平飞状态和协调转弯状态的配平解,并与单一优化算法和飞行测试数据比较,验证了优化配平算法的准确性和高效性。计算结果表明,基于GA/LM混合的优化配平算法不仅继承了GA算法良好的全局收敛性,也继承了LM算法高效的局部寻优特点,是一种高效、全局最优的直升机配平算法。; Trim algorithm was usually based on the Newton iterative algorithm which was simple and efficient,but the results of the trim depended on the initial value. Since the objective function was constructed on the basis of UH-60A flight dynamic model,trim calculations were transformed into optimal computation. Taking advantages of the GA and LM algorithm,a hybrid algorithm and the solution space had been developed with constrained,non-unique trim solutions. In this paper,UH-60A helicopter in level flight and coordinated turn flight was trimmed. Comparison between calculated and flight test data were made. The analysis indicates that the GA / LM hybrid algorithm,which not only inherits global convergence of the GA algorithm but also inherits excellent characteristics of fast local search of the LM algorithm,is a correct and effective algorithm for helicopter trim problem.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143654]
专题	清华大学
推荐引用方式 GB/T 7714	吴超,谭剑锋,王浩文,等. 基于GA/LM混合优化的直升机全机配平算法[J],2016, 2016.
APA	吴超.,谭剑锋.,王浩文.,倪先平.,WU Chao.,...&NI Xian-ping.(2016).基于GA/LM混合优化的直升机全机配平算法..
MLA	吴超,et al."基于GA/LM混合优化的直升机全机配平算法".(2016).

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