matlab 磁悬浮

MATLAB-Based Magnetic Levitation Control System (基于MATLAB的磁悬浮控制系统的研究) 系统介绍

磁悬浮系统是一个典型的非线性系统，当前绝大多数磁悬浮控制器都是基于非线性磁悬浮系统在某个平衡点的线性化模型而设计的线性控制律。当系统的平衡点改变时，系统的动态特性会显著 改变。

Magnetic Levitation system is a typical nonlinear system. The current vast majority of controllers which belongs to nonlinear magnetic levitation system are based on a linear equilibrium model to design for the linear control law. When the equilibrium point of the system changes, the dynamic characteristics of the system will change significantly.

磁悬浮系统是利用电磁力来控制刚体悬浮的空间位置。其工作原理是控制电磁铁绕组的电流，产生与刚体重量等价的电磁力，使得刚体稳定悬浮在平衡位置。由于电磁力与悬浮气隙间存在非线性反比关系，这种平衡并不稳定，一旦受到外界干扰(如电压脉动或者风)，刚体就会掉下来或被吸上去，因此必须实行闭环控制。

Magnetic Levitation system uses electromagnetic force to control the suspended spatial position of the rigid body. Its working principle is to control the electric current of Electromagnet windings to produce electromagnetic force which is equivalent to the weight of the rigid body, making the rigid body suspended in stable equilibrium position. Due to the nonlinear inverse relationship between the electromagnetic force and Suspended air , this balance is not stable.In the event of outside interference (such as

voltage fluctuation or wind), rigid body will fall off or suck up.So it is necessary to implement closed-loop control.

采用位置传感器在线获取刚体位置信号，控制器对位移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克服重力使得刚体稳定在平衡点附近。

With online access to the location position of the rigid body by the use of sensor signal, controller produce control signal through displacement signal processing.And the power amplifier generate the required current according to control signals and sent to

electromagnets which make corresponding magnetic to overcome gravity ,resulting in the stability of rigid body in the equilibrium point.

磁悬浮由于其无接触的特点避免了物体之间的摩擦和磨损，能延长设备的使用寿命，改善设备的运行条件，因而在交通、冶金、机械、电器、材料等各个方面有着广阔的应用前景。 Magnetic Levitation system can avoid friction and wear between the object due to its non-contact characteristics. It can also extend the Service life of equipment and improve operating conditions of the equipment. So it has broad application prospects in the transportation, metallurgy, machinery, electrical, materials and other aspects.