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基于分子、分母皆线性的两点有理逼近,本文对于非线性规划提出了序列有理规划SRP方法,按两种情况进行了研究。第一种为SRP-L方法,将原问题化为等效的LP问题求解;第二种为SRP-Q方法,将原问题化为等效的QP问题求解。本文的工作说明,两点有理逼近函数对于改进优化方法是有益的。 相似文献
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SQP技术与广义投影相结合的次可行方向法 总被引:6,自引:1,他引:5
简金宝 《高校应用数学学报(A辑)》1996,(1):65-74
本文建立非线性不等式约束优化的一个新算法,分析和证明了算法的整体收敛性和超线性收敛性。其技巧在于将广义投影和SQP技术结合使用。 相似文献
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混合约束下广义几何规划的一种SQP算法 总被引:2,自引:0,他引:2
针对带等式和不等式约束的广义几何规划问题,构造了一种SQP算法并证明了该算法的全局收敛性和局部二阶收敛性。 相似文献
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In this paper,a new globally convergent algorithm for nonlinear optimization prablems with equality and inequality constraints is presented. The new algorithm is of SQP type which determines a search direction by solving a quadratic programming subproblem per itera-tion. Some revisions on the quadratic programming subproblem have been made in such a way that the associated constraint region is nonempty for each point x generated by the algorithm, i. e. , the subproblems always have optimal solutions. The new algorithm has two important properties. The computation of revision parameter for guaranteeing the consistency of quadratic sub-problem and the computation of the second order correction step for superlinear convergence use the same inverse of a matrix per iteration, so the computation amount of the new algorithm will not be increased much more than other SQP type algorithms; Another is that the new algorithm can give automatically a feasible point as a starting point for the quadratic subproblems pe 相似文献
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Q.Z. Zhang Z.B. Wang F. Tao Bhaba R. Sarker 《Applied Mathematical Modelling》2013,37(14-15):7568-7587
The design of terminal guidance law with impact angle constraint is required for air-to-ground guided weapons to increase their warhead effect. The variable structure guidance law that consists of diving plane guidance and turning plane guidance equations with impact angle constraint is derived, and the saturation function is introduced into the design of reaching law control to weaken the chattering of the guidance system. The influence of four guidance parameters (i.e., reaching law factor, switching item gain, angle error item factor, and boundary layer thickness) on guidance performance is studied and three typical constraints (i.e., heating rate, normal load factor, and dynamic pressure) are analyzed. An optimization model is established for this problem and the feasibility of on-line optimization on guidance law parameters by the Sequential Quadratic Programming (SQP) algorithm is discussed as well. Simulation results show that the on-line optimization of the derived guidance law not only satisfies specified constraints, but also minimizes the fuel cost during the flying course. Moreover, the optimization process can be completed in a few seconds so that it is suitable for on-board applications. 相似文献
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提出了—个求解非线性互补约束均衡问题的滤子SQP算法.借助Fischer-Burmeister函数把均衡约束转化为—个非光滑方程组,然后利用逐步逼近和分裂思想,给出—个与原问题近似的一般的约束优化.引入滤子思想,避免了罚函数法在选择罚因子上的困难.在适当的条件下证明了算法的全局收敛性,部分的数值结果表明算法是有效的. 相似文献
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《Optimization》2012,61(1):23-38
Based on a smoothing approximation of a lower order penalty function and following Facchinei's method of dealing with the inconsistency of subproblems in SQP methods, we present a new robust SQP algorithm for solving a nonlinear constrained optimization problem. The proposed algorithm incorporates automatic adjustment rules for the choice of parameters. Under a new regularity condition at infeasible points, the algorithm is proved to be globally convergent. 相似文献
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Xiu Naihua.Dept.of Appl.Math. Northern Jiaotong Univ. Beijing . Email:nhxiu@center.njtu.edu.cn 《高校应用数学学报(英文版)》2000,(4)
§ 1 IntroductionThe nonlinear complementarity problem(NCP) is to find a pointx∈Rn such thatx Tf(x) =0 ,x≥ 0 ,f(x)≥ 0 ,(1 .1 )where f is a continuously differentiable function from Rninto itself.It is well known thatthe NCP is equivalent to a system of smoothly nonlinear equations with nonnegative con-straintsH (z)∶ =y -f(x)x . y =0 ,s.t. x≥ 0 ,y≥ 0 ,(1 .2 )where z=(x,y) and x y=(x1 y1 ,...,xnyn) T.Based on the above reformulation,many in-terior-point methods are established;see,fo… 相似文献