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分波器的计算机辅助高精度自动设计
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作者 范辉 《雷达与对抗》 2004年第3期56-61,共6页
重点介绍了在变换域直接进行数值最优逼近、霍氏等价式的提取、网络参数的构建以及用"极点消去法"求解网络元件等与分波器的高精度计算机辅助设计(CAD)有关的一系列重要问题。实践证明:用本文给出的方法不仅设计精度高、速度... 重点介绍了在变换域直接进行数值最优逼近、霍氏等价式的提取、网络参数的构建以及用"极点消去法"求解网络元件等与分波器的高精度计算机辅助设计(CAD)有关的一系列重要问题。实践证明:用本文给出的方法不仅设计精度高、速度快,而且非常灵活。虽然本文所述的方法主要是用来设计各种分波器的,但它也完全可用于一般低通、高通、带通及带阻滤波器的设计。 展开更多
关键词 分滤波器 变量变换 最优数值逼近 极点消去法 计算机辅助设计
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Numerical Solution to Optimal Feedback Control by Dynamic Programming Approach:A Local Approximation Algorithm 被引量:3
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作者 GUO Bao-Zhu WU Tao-Tao 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2017年第4期782-802,共21页
This paper considers optimal feedback control for a general continuous time finite-dimensional deterministic system with finite horizon cost functional. A practically feasible algorithm to calculate the numerical solu... This paper considers optimal feedback control for a general continuous time finite-dimensional deterministic system with finite horizon cost functional. A practically feasible algorithm to calculate the numerical solution of the optimal feedback control by dynamic programming approach is developed. The highlights of this algorithm are: a) It is based on a convergent constructive algorithm for optimal feedback control law which was proposed by the authors before through an approximation for the viscosity solution of the time-space discretization scheme developed by dynamic programming method; b) The computation complexity is significantly reduced since only values of viscosity solution on some local cones around the optimal trajectory are calculated. Two numerical experiments are presented to illustrate the effectiveness and fastness of the algorithm. 展开更多
关键词 Curse of dimensionality Hamilton-Jacobi-Bellman equation optimal feedback control upwind finite difference viscosity solutions
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