基于多目标差值模型的变齿距电磁作动器复合特性半解析优化方法研究

项目名称： 基于多目标差值模型的变齿距电磁作动器复合特性半解析优化方法研究

项目编号： No.51475100

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 机械、仪表工业

项目作者： 石勇

作者单位： 黑龙江大学

项目金额： 83万元

中文摘要： 主动隔振技术是抑制低频振动噪声的有效方法，电磁作动器是主动隔振系统的关键部件，其性能严重影响隔振控制效果。与定齿距电磁作动器相比，变齿距作动器具有线性好、易控制等优点，因此具有重要的应用价值。然而，由于变齿距电磁作动器机电磁物理场在时空上的耦合，导致其结构参数对性能的影响机理还不清楚。此外，现有机电磁多物理场耦合系统优化方法中，有限元法精度高，但计算量大，并难以胜任系统多目标性能优化；解析法存在模型及计算复杂、边界条件难以确定等问题。本课题以变齿距电磁作动器为研究对象，旨在开发一种工程适用的机电磁多物理场耦合系统复合特性多目标优化的半解析方法。该研究通过实验设计方法开展变齿距电磁作动器参数影响量化及相关性分析，然后利用系统当前特性与目标特性间的差值，建立全工况多目标优化模型，再通过半数值法求解模型敏感矩阵，利用前馈和反馈开展矩阵解耦，多种优化求解模型最优参数，最后开展实验测试及评价验证。

中文关键词： 多目标优化；电磁作动器；差值模型；半解析法；敏感性分析

英文摘要： Active vibration isolation technology is an effective method to suppress the low-frequency vibration noise, and electromagnetic actuator is the key component of the active vibration isolation system, whose performance has a serious influence on vibration isolation effect. Compared with fixed pitch electromagnetic actuator, variable pitch actuator has the advantages of good linearity, easy to control, so it has important application value. However, because of mutual coupling among mechanical，electrical and magnetic fields in time and space, the mechanism that structure parameters of the variable pitch electromagnetic actuator effect on its performance is not clear. In addition, In existing optimization methods about the coupling system of mechanical，electrical and magnetic multiple physical fields, the finite element method is of high precision and the large amount of computation, and it is unsuitable for the multi-objective performance optimization; Analytic method can leads to model and computational complexity, and it is difficult to determine the boundary condition of its model. In this study, the variable pitch electromagnetic actuator as the research object, the research aim is to develop a semi-analytical method suitable for multi-objective composite performances optimization of mechanical，electrical and magnetic coupling multi-physics system. The method will be realized as follow: the experimental design method is used to do quantitative analysis and parameters correlation analysis of variable pitch electromagnetic actuator, and then use the difference between the characteristics of the target and system characteristics in all conditions to establish a multi-objective optimization model, and with semi-analytical method to solve the model sensitivity matrix, using feedforward and feedback to carry out matrix decoupling, solving the optimal model parameters with a variety of optimization, and finally carrying out testing, evaluation, and experimental verification.

英文关键词： Multi-objective Optimization;Electromagnetic Actuator;Difference Model;Semi-analytical Method;Sensitivity Analysis