AbstractMagnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic pressure is used to counteract the effects of the gravity and any other acceleration. The concept of maglev vehicles inspired me to design circuits meant for the prototype to achieve dynamic stability during both levitation and propulsion, isolating the levitation and propulsion systems.
Idea
The paper describes a circuit for a prototype maglev vehicle weighing 5 kg, inclusive of the on board magnets and a power source utilizing a combination of permanent magnets and solenoids to achieve the required magnetic field strength. Custom circuits and schematics were designed for each of the three basic systems in a maglev transit system. The three systems are: the magnetic levitation system, the magnetic propulsion system, and the magnetic alignment system. The magnetic levitation system utilizes a Hall Effect sensor and a timer IC circuit to control a solenoid. The magnetic propulsion system uses a solenoid generating a magnetic field which can be varied appropriately by the amount of current supplied, a Hall Effect sensor, a timer circuit, a controllable current amplifying IC circuit, and power transistors to control the current supplied to the solenoid and act as the various switches in the circuit. The alignment system will be a passive system consisting of permanent magnets on both the rail and the bogie, whose repulsive force keeps the transit vehicle on the desired path. The proposed system would be designed for a small bogie running a track length of about 10-20 meters, being magnetically levitated and propelled; having a braking mechanism, and an alignment system, in addition to the possibility of traversing curved linear paths.
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