The main methods of the existing multi-spiral surface geometry modeling include spatial analytic geometry algorithms, graphical method, interpolation and approximation algorithms. However, there are some shortcomings ...The main methods of the existing multi-spiral surface geometry modeling include spatial analytic geometry algorithms, graphical method, interpolation and approximation algorithms. However, there are some shortcomings in these modeling methods, such as large amount of calculation, complex process, visible errors, and so on. The above methods have, to some extent, restricted the design and manufacture of the premium and high-precision products with spiral surface considerably. This paper introduces the concepts of the spatially parallel coupling with multi-spiral surface and spatially parallel coupling body. The typical geometry and topological features of each spiral surface forming the multi-spiral surface body are determined, by using the extraction principle of datum point cluster, the algorithm of coupling point cluster by removing singular point, and the ＂spatially parallel coupling＂ principle based on the non-uniform B-spline for each spiral surface. The orientation and quantitative relationships of datum point cluster and coupling point cluster in Euclidean space are determined accurately and in digital description and expression, coupling coalescence of the surfaces with multi-coupling point clusters under the Pro/E environment. The digitally accurate modeling of spatially parallel coupling body with multi-spiral surface is realized. The smooth and fairing processing is done to the three-blade end-milling cutter＇s end section area by applying the principle of spatially parallel coupling with multi-spiral surface, and the alternative entity model is processed in the four axis machining center after the end mill is disposed. And the algorithm is verified and then applied effectively to the transition area among the multi-spiral surface. The proposed model and algorithms may be used in design and manufacture of the multi-spiral surface body products, as well as in solving essentially the problems of considerable modeling errors in computer graphics and engineering in multi-spiral surface＇s connection available with approximate methods or graphical methods.展开更多
High Q inductors are the important elements for RF circuit design. In this paper, the FDTD method is applied to explain the crowding effect of the spiral inductor , which can never be accurately analyzed by analytical...High Q inductors are the important elements for RF circuit design. In this paper, the FDTD method is applied to explain the crowding effect of the spiral inductor , which can never be accurately analyzed by analytical solutions. The experimental results verify the FDTD simulation. The micro genetic algorithms and FDTD are combined to design the high Q of the inductor, the results show the efficiency of this exploration.展开更多
This article addresses the issues of falling into local optima and insufficient exploration capability in the Arithmetic Optimization Algorithm (AOA), proposing an improved Arithmetic Optimization Algorithm with a mul...This article addresses the issues of falling into local optima and insufficient exploration capability in the Arithmetic Optimization Algorithm (AOA), proposing an improved Arithmetic Optimization Algorithm with a multi-strategy mechanism (BSFAOA). This algorithm introduces three strategies within the standard AOA framework: an adaptive balance factor SMOA based on sine functions, a search strategy combining Spiral Search and Brownian Motion, and a hybrid perturbation strategy based on Whale Fall Mechanism and Polynomial Differential Learning. The BSFAOA algorithm is analyzed in depth on the well-known 23 benchmark functions, CEC2019 test functions, and four real optimization problems. The experimental results demonstrate that the BSFAOA algorithm can better balance the exploration and exploitation capabilities, significantly enhancing the stability, convergence mode, and search efficiency of the AOA algorithm.展开更多
针对红嘴蓝鹊优化算法(Red-billed Blue Magpie Optimization Algorithm,RBMO)存在多样性迅速退化、寻优精度差、易陷入局部最优的问题,提出了一种基于混合策略的自适应红嘴蓝鹊优化算法(Adaptive Red-Billed Blue Magpie Optimization ...针对红嘴蓝鹊优化算法(Red-billed Blue Magpie Optimization Algorithm,RBMO)存在多样性迅速退化、寻优精度差、易陷入局部最优的问题,提出了一种基于混合策略的自适应红嘴蓝鹊优化算法(Adaptive Red-Billed Blue Magpie Optimization Algorithm Based on Mixed Strategy,JRBMO)。首先,引入Hammersley序列初始化种群,使初始解分布更均匀,为寻优提供基础;其次,在勘探阶段,提出自适应螺旋围捕策略,通过动态控制个体的勘探范围与方向,提高RBMO的搜索能力。在开发阶段,引入莱维飞行策略,对当前最优解进行局部扰动,增强算法局部开发能力;最后,提出自适应维度变异策略,根据种群适应度分布的变化,对个体进行维度变异,避免算法陷入局部最优。在CEC2017与CEC2019测试集上对算法性能进行评估,结果显示JRBMO均值胜率分别达到88.9%和70%,验证了JRBMO的有效性。此外,将JRBMO应用于拉(压)弹簧设计问题和三维无线传感器网络(WSN)节点覆盖问题上,JRBMO均取得了最优的结果,其中WSN节点均值覆盖率高出原算法6.3%,体现了JRBMO在实际应用中的普适性。展开更多
基金Supported by National Special Cooperation Project of International Science and Technology of China(Grant No.S2013HR0021L)Key Project of Fujian Provincial Science and Technology of China(Grant No.2012H0034)
文摘The main methods of the existing multi-spiral surface geometry modeling include spatial analytic geometry algorithms, graphical method, interpolation and approximation algorithms. However, there are some shortcomings in these modeling methods, such as large amount of calculation, complex process, visible errors, and so on. The above methods have, to some extent, restricted the design and manufacture of the premium and high-precision products with spiral surface considerably. This paper introduces the concepts of the spatially parallel coupling with multi-spiral surface and spatially parallel coupling body. The typical geometry and topological features of each spiral surface forming the multi-spiral surface body are determined, by using the extraction principle of datum point cluster, the algorithm of coupling point cluster by removing singular point, and the ＂spatially parallel coupling＂ principle based on the non-uniform B-spline for each spiral surface. The orientation and quantitative relationships of datum point cluster and coupling point cluster in Euclidean space are determined accurately and in digital description and expression, coupling coalescence of the surfaces with multi-coupling point clusters under the Pro/E environment. The digitally accurate modeling of spatially parallel coupling body with multi-spiral surface is realized. The smooth and fairing processing is done to the three-blade end-milling cutter＇s end section area by applying the principle of spatially parallel coupling with multi-spiral surface, and the alternative entity model is processed in the four axis machining center after the end mill is disposed. And the algorithm is verified and then applied effectively to the transition area among the multi-spiral surface. The proposed model and algorithms may be used in design and manufacture of the multi-spiral surface body products, as well as in solving essentially the problems of considerable modeling errors in computer graphics and engineering in multi-spiral surface＇s connection available with approximate methods or graphical methods.
文摘High Q inductors are the important elements for RF circuit design. In this paper, the FDTD method is applied to explain the crowding effect of the spiral inductor , which can never be accurately analyzed by analytical solutions. The experimental results verify the FDTD simulation. The micro genetic algorithms and FDTD are combined to design the high Q of the inductor, the results show the efficiency of this exploration.
文摘This article addresses the issues of falling into local optima and insufficient exploration capability in the Arithmetic Optimization Algorithm (AOA), proposing an improved Arithmetic Optimization Algorithm with a multi-strategy mechanism (BSFAOA). This algorithm introduces three strategies within the standard AOA framework: an adaptive balance factor SMOA based on sine functions, a search strategy combining Spiral Search and Brownian Motion, and a hybrid perturbation strategy based on Whale Fall Mechanism and Polynomial Differential Learning. The BSFAOA algorithm is analyzed in depth on the well-known 23 benchmark functions, CEC2019 test functions, and four real optimization problems. The experimental results demonstrate that the BSFAOA algorithm can better balance the exploration and exploitation capabilities, significantly enhancing the stability, convergence mode, and search efficiency of the AOA algorithm.
文摘针对红嘴蓝鹊优化算法(Red-billed Blue Magpie Optimization Algorithm,RBMO)存在多样性迅速退化、寻优精度差、易陷入局部最优的问题,提出了一种基于混合策略的自适应红嘴蓝鹊优化算法(Adaptive Red-Billed Blue Magpie Optimization Algorithm Based on Mixed Strategy,JRBMO)。首先,引入Hammersley序列初始化种群,使初始解分布更均匀,为寻优提供基础;其次,在勘探阶段,提出自适应螺旋围捕策略,通过动态控制个体的勘探范围与方向,提高RBMO的搜索能力。在开发阶段,引入莱维飞行策略,对当前最优解进行局部扰动,增强算法局部开发能力;最后,提出自适应维度变异策略,根据种群适应度分布的变化,对个体进行维度变异,避免算法陷入局部最优。在CEC2017与CEC2019测试集上对算法性能进行评估,结果显示JRBMO均值胜率分别达到88.9%和70%,验证了JRBMO的有效性。此外,将JRBMO应用于拉(压)弹簧设计问题和三维无线传感器网络(WSN)节点覆盖问题上,JRBMO均取得了最优的结果,其中WSN节点均值覆盖率高出原算法6.3%,体现了JRBMO在实际应用中的普适性。
