Single Degree Of Freedom Magnetic Levitation Platform Based On Dspace Rapid Control Prototyping Research

Magnetic suspension technology has many excellent performances such as no friction, no wear, long life, large travel range, low power consumption.It is related to electromagnetism, mechanics, control theory, computer science and many other high technologies.But the suspension technology has strongly nonlinear and coupled characteristics.High precision magnetic suspension movement is very difficult.The major difficulty is building the accurate modeling of electromagnetic force and design the control system.The main work of this article is building the system model of a single degree of freedom magnetic suspension stage (MSS) when considering many nonlinear characteristic such as the effect of air gap edge, core reluctance, leakage, then some researches about the Control System of MSS by using of the advanced tools—dSPACE systems are did.This article first describes the development of a maglev platform and its significance. Then taking the single degree of freedom MSS as the research object, the mathematical model for electromagnet is established. On this basis, the MSS system model is established by dynamic computing.Finally introduces a new type of controller design tool---dSPACE systems.With its real-time simulation, we can do rapid prototyping research about the controller of MSS.The controller design of MSS is related to whether the MSS is stable and also decides if it can achieves good control performance. As the maglev system is strongly nonlinear, the design of control system is particularly complex. After analyzing of the system model in detail, designing the PID control system and its associated auxiliary circuits, doing some off-line simulation which is based on MATLAB or Simulink. The real-time simulation is finished. The real-time simulation adopts the dSPACE system, the real hardware interface instead of logical connection in Simulink, and use real objects to replace the abstract Mathematical model.The experimental file and animation interface are designed for observation,saving data and on-line Scheduling.Druing the experiment, we find the suspension performance can basically meet the design requirements.The design of model and rapid controller prototyping of system can be turned right.