《磁悬浮控制算法设计》-毕业设计论文（学术).doc

磁悬浮控制算法设计 摘要 随着电子技术、控制工程、信号处理元器件、电磁理论及新型电磁材料的发展和转子动力学的进展，磁悬浮技术得到了长足的发展。磁悬浮技术是集电磁学、电子技术、控制工程、信号处理、机械学、动力学为一体的典型的机电一体化技术(高新技术)。通过课题研究需要完成上拉式磁悬浮实验系统的设计，并建立系统数学模型、研究控制算法、使用Matlab软件进行对控制算法进行仿真绘图、要求控制算法稳定、准确、快速。 此次设计上拉式磁悬浮系统在控制器的控制下，采用ss495高精度线性霍尔传感器在线获取永磁体位置信息，产生电压信号，控制器对电压信号进行处理产生控制信号，功率放大器根据控制信号产生所需电流并送往电磁铁，电磁铁产生相应磁力与重力平衡使得永磁体稳定在平衡点附近。由于电磁吸力与悬浮气隙间存在一种非线性关系，因而这种平衡并不稳定，一旦受到外界干扰，永磁体就会掉下来或被吸上去，因此采用闭环控制系统。 该设计具有以下特点：动态响应性强，可靠性高，损耗小。使用matlab设计控制算法，使重物能够稳定、准确、快速响应给定指令。 关 键 词：磁悬浮，霍尔传感器，控制器，永磁体，电压信号，matlab。 THE DESIGN OF MAGNETIC LEVITATION ABSTRACT As the development of electronic technology, control engineering, signal processing components, electromagnetic theory and the new electromagnetic materials and progress of the rotor dynamics, magnetic levitation technology has been developed for a long time. Magnetic technology is a set of electromagnetics, electronic technology, control engineering, signal processing, mechanics, and dynamics is one of the typical mechatronics technology. By the research，you need to complete the pull-type magnetic levitation experiment system design，build the mathematical model，study the control algorithm, and use Matlab software simulation drawing, the control algorithm is stable, accurate and fast. The design is on the pull-type magnetic levitation system under the control of the controller, ss495 high-precision linear Hall sensor online access to the location information of the permanent magnet produces a voltage signal, the controller on the voltage signal to generate control signals, power amplifier control signal to generate the required current and sent to the electromagnet, electromagnets to produce the corresponding the balance of magnetic and gravity makes the stability of the permanent magnet near the equilibrium point. Outside interference (such as voltage ripple or wind) due to the electromagnetic force and the suspension of the air gap there is a nonlinear relationship, and thus the balance is not stable, permanent magnet wi