磁悬浮的模糊控制系统设计+数学建模+仿真
效果。
关键词：磁悬浮；线性；糊控制
Fuzzy control system of maglev
ABSTRACT：Magnetic levitation is a technology which integrates several technologies such as electromagnetics，mechanics，control engineering and computer, etc．Due to its many merits such as no mechanical friction， no wear, long longevity, low power loss，and no noise，it has become a hotspot issue in the scientific community of the world．However, it is difficult to build its mathematical model because of its inherent nonlinearity, instability, as well as the problem of uncertainties caused by disturbance of the traditional magnetic levitation control system．These factors make the control using the traditional control methods more difficult．This topic first according to the composition and working principle of magnetic levitation system, the analysis of system dynamic model, established the nonlinear mathematical model of magnetic suspension system, the balance of nonlinear model is linearized, and the linearized model of the maglev system. Second, in understanding the maglev controlled object on the basis of a two-dimensional fuzzy controller was designed, in the MATLAB environment using FIS based magnetic suspension fuzzy controller module, and using Simulink to build the maglev fuzzy control system structure, simulation results show that the ball can stable magnetic levitation system at the equilibrium position.
The real—time control experiment proves that the algorithms proposed in this thesis are more flexible，adaptable and has good control performance for the stability and dynamic of nonlinear complex system such as magnetic levitation system．
KEY WORDS：Magnetic levitation；onlinear；fuzzy control
目录
1绪论 1
1.1 本课题的意义 1
1.2 磁悬浮的原理及发展状况 1
1.3 磁悬浮系统概述 2
1.4 本次课题主要工作 3
1.5论文内容安排 3
2 磁悬浮系统原理及数学模型建立 5
2.1 电磁学理论基础 5
2.2 毕奥—萨伐尔定律 7
2.3、光电位置传感器分析 9
2.3.1 传感器原理 9
2.3.2 传感器装置及后处理电路 10
2.4、磁悬浮系统数学模型的建立 11
2.5系统模型线性化处理 14
2.6实际系统模型 16
2.7、磁悬浮系统的能控性能和能观性能分析 17
3 模糊系统的基本理论 18
3.1 模糊系统的概述 18
3.2 模糊控制器的基本结构 18
3.3 模糊控制器结构分类 21