Projects / Electrical / Electrical project 36

Electromagnetic Levitation Demonstrator with PID Control

Approx. component budget: Rs. 6,000 - 11,000

Objective

Levitate an object using feedback control and find how gains and coil design affect stability and response to disturbance.

What you will build

An electromagnet coil above a steel or magnetic ball, a Hall or optical position sensor, a coil driver (MOSFET) and a microcontroller running a PID loop with a sturdy frame.

Results you can expect

• Position vs time response
• Stable operating window
• Effect of PID gains
• Coil current and power
• Effect of small pushes

What you will learn

Magnetic force, unstable systems, sensing and control, the same ideas used in maglev and magnetic bearings.

Tools and notes

Arduino/STM32, Hall sensor, MOSFET driver, power supply, Excel. Keep the supply low (12-24 V) and use a heat sink on the driver.

Resume points from this project

• Built and tested Electromagnetic Levitation Demonstrator with PID Control; objective: levitate an object using feedback control and find how gains and coil design affect stability and response to disturbance.
• Measured and analysed position vs time response and stable operating window; wrote the report and presented the results in a viva. Add your own numbers: [x].

Replace [x] with your own measured results. Write only what you really did.

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