Intelligent Controllable Magnetic Levitation System

Maglev technology because of its non-contact, low loss, use for a long time, and the advantages of environmental protection, get the favour of people, now the research of the technology at home and abroad are also gradually increasing. Application of the technology also has a lot of products such as magnetic levitation mouse, skateboard, magnetic levitation maglev gyroscope, etc. So the maglev technology is of great significance, in this paper, magnetic levitation globe design by using the theory of electromagnetism, dynamic model of magnetic field to produce magnetic force, control algorithm, and using the mathematical method of the whole system are described and analyzed. Through theoretical analysis and combined with actual situation design the detection unit, central processing unit, DA conversion module, execution unit, system circuit, finally system after repeated debugging achieved the expected effect, can float weight of levitation globes, and suspended the globe is accompanied by music signal can be up and down small amplitude tremor.Is the key to stable suspended objects is to make the coil on appeal and the formation of suspended solids suspended solids of balance between the gravity of itself. And objects to vibration is on the basis of the suspension, first by the photoelectric position sensor real-time monitoring of suspended solids and the change of the interval between the electromagnetic coil, and the distance change is converted into corresponding voltage output, to the central processing unit microcontroller; At the same time, the music collection circuit also collected in the corresponding music signal sent to the central processing unit single-chip microcontroller and the single chip microcomputer this two way of signal is collected in the AD conversion, combined with the corresponding phase shift algorithm makes synchronous detection signal and control signal. Then the output digital signal in the DA module, then the output of the DA module to the execution unit to control floating object on the premise of suspension with the rhythm of music vibrates at a particular equilibrium position. So the system is mainly solve the suspension stability of suspension and vibration two questions.In this paper, the design of magnetic suspension system of the main functions are accomplished by circuit, so it is important to part of the design of the circuit was, mainly including signal acquisition circuit, differential amplifier circuit, phase shift network, power amplification module, power supply and over-voltage circuit design. In each circuit module, the single-chip microcomputer control system can always control the current in the electromagnetic coil to generate the electromagnetic force and gravity balance suspended object, which make the suspension physical stability of suspension and joined the music can be vibrated and remain suspended.At the end of the link on each link of the whole system (equilibrium position, phase, amplifier) are respectively made careful debugging, and then select the small nails, half of the globe, the whole globe, throughout the globe with small nails, throughout the globe and ping pong balls, throughout the globe and add a quarter of the globe that several different weight suspended for debugging, observe and record the experimental debugging results, the actual experimental results comparing with vision, analysis of the cause of the difference, at the same time and in the experiment of unreasonable places such as adjusting and equipment selection and circuit is proposed to improve the solution,Then in debug finally close to the experimental results and expected, and the stability of the system.