【作者】 赵军；

【导师】 邵可然；

【作者基本信息】 华中科技大学 ， 电机与电器， 2009， 硕士

【摘要】 电磁装置优化设计问题一直以来都是计算电磁学领域的研究热点,特别是现代计算机的发展和数值分析技术的成熟给电磁装置的优化设计提出了更高的要求。电磁装置的优化设计是根据要达到的电磁特性或系统特性求解装置的结构、介质和源参数等,它是以电磁计算作为基础,并且有优化设计的相关特点,如约束条件的限制、解的不确定性和采用优化计算等,因此给求解带来了很多困难。本文主要探索了电磁装置优化设计问题的一般解决方案,并且以实例验证方案的可行性。电磁装置的优化设计目标往往涉及装置的静态特性与动态特性两个方面(这里的动态特性特指装置的相对运动的特性,而不是电磁参数的动态特性)。针对静态特性的优化,本文主要探讨了无铁心电磁驱动器和螺线管的两个问题;针对动态特性的优化,本文探讨的是电动斥力机构的优化问题。无铁心电磁驱动器和螺线管没有机械的运动,优化设计的目标只是电磁特性的满足,并且因为在求解过程中不需要耦合运动,从而大大简化了计算,因此这两个优化问题非常适合用作优化的理论与方法的研究。电磁装置动态特性的设计目标往往不光是电磁特性的满足,而且需要运动特性的满足,所以求解过程复杂,电动斥力机构作为目前很热的一个实际工程问题,很适合用来探索工程上实用的优化方法与思路。从优化的目标看,可以将优化问题分为单目标优化和多目标优化,如无铁心电磁驱动器问题为单目标优化,螺线管优化问题为多目标优化。从优化的方法看,本文采用了直接优化和间接优化两种方法,直接优化方法引入了一种普适的优化算法——模式搜索算法,间接优化方法引入了人工神经网络模型联合模式搜索优化算法的方法。本文以有限元常用软件ANSYS作为电磁计算的基础,二次开发后与优化算法嵌套使用,完成对电磁装置的优化设计一般方法的探讨。更多还原

【Abstract】 The optimal design of electromagnetic devices has always been the research hotspot of the computational electromagnetics , especially with the development of the modern computer and the digital analysis technology. The target of the optimal design is to solve the source parameters, structural parameters or medium parameters in accordance with the requirement of the electromagnetic field information and related characteristics of a system or device. The process is based on the electromagnetic computation, but has its own characteristics and is much more complicated, for it often has constraints, uncertain solution and needs optimization calculation. This paper explores the general approach to solve the optimal design of electromagnetic devices and takes practical examples to verify the feasibility of the schemes.The goal of optimal design of electromagnetic devices usually involves the static characteristics and the dynamic characteristics. It is worth noting that the dynamic characteristics is not about the electromagnetic parameters but about the movement of the devices. For the optimization of the static characteristics, this paper studies these two problems, the coreless actuator and the Loney’s solenoid. And for the optimization of the dynamic characteristics, this paper studies the problem of the repulsion agency. The coreless actuator and the Loney’s solenoid don’t involve the movement, and has no optimal target of the movement, so it is easier to solve than the repulsion agency. These two problems are very suitable for studying the optimization theory and methods. The optimization of the repulsion agency is not only about the electromagnetic characteristics but also about the dynamic characteristics, so its solving process need couple with the movement and it brings much more trouble. As a very hot practical engineering problem, it is very suitable to explore the practical optimal methods in engineering.With respect to the number of optimization goal, the optimization problem can be divided into mono-objective optimization and multi-objective optimization. The problems of the coreless actutor and the Loney’s solenoid belong to mono-objective optimization while the problem of the repulsion agency belongs to mutli-objective optimization. With respect to the methods used in the optimization,this paper introduces two, the direct one and the indirect one. The direct method is using the pattern search optimization algorithm and the indirect method is using a method that combines the artificial neural network model and the pattern search optimization algorithm.This paper uses the finite element software ANSYS as the basis of the electromagnetic field computation. The ANSYS process can be used in the optimization algorithm after secondary development, in order to achieve the general approach to the optimal design of the electromagnetic devices.更多还原