【作者】 张翼；

【导师】 胡基士；

【作者基本信息】 西南交通大学 ， 电力电子与电力传动， 2006， 硕士

【摘要】 磁浮列车作为一种新型的陆上轨道交通工具,具有速度快、能耗低、乘坐舒适、噪音小等优点,并已在工程实践中得以应用。对于电磁吸浮型磁浮列车,悬浮控制是其关键部分,由于该系统的非线性和不稳定性,需要通过主动控制使其稳定悬浮。 本文建立了单电磁铁悬浮系统(SMLS)的非线性动态模型,并在平衡点附近线性化,得到相应的磁悬浮系统线性化模型和对应的系统状态方程。在系统能控和能观的基础上,设计了基于单电磁铁的电压反馈控制、PID控制、模糊控制和模糊PID控制,对这几种控制方法进行了仿真分析,并对各种控制方法的性能特点进行了比较。 在对磁悬浮系统理论分析的基础上,对SMLS采用数字控制器以实现其悬浮控制。本文设计了基于数字信号处理器TMS320F2812的数字控制器,其功能包括信号的采集、基于算法的信号处理以及运算结果的输出等。初步实验表明该数字控制器能够实现稳定的悬浮控制并具有良好的抗干扰能力。更多还原

【Abstract】 As a perfect vehicle on land, maglev train is characterized by high velocity, small energy consuming, low noise, safety and comfort, and it has been successfully put into practice. Due to the inherent nonlinearities and instability of the electromagnetic suspension system, suspension control is key point. So it is needed active control in order to keep steady suspension.In this paper, the nonlinear dynamic mathematic model of single magnetic levitation system(SMLS) is set up, and linearized at the equilibrium point. Then the linear model of magnetic suspension system and the state function of the system is getted. On the basis of the controllablity and observability, the several kinds of controller including linear states feedback controller, PID controller, fuzzy controller and fuzzy-PID controller are designed. At last the simulations are made for the controllers, and compared features and performance of each controller.After the theory analysis of the magnetic suspension system, the digital controller is adopted to keep suspension control. The controller is designed with the digital signal processor(DSP)-TMS320F2812. Its functions include signal sampling, signal processing based on control arithmetic and outputting the result, etc. The experiment results show that the digital controller could keep the SMLS stable suspension and have a good performance in anti-disturbtion.更多还原