Magnetic levitation with Atmega8

Atmega8 and BascomAVR using proportional differential (PD) regulator

Category:

Howto & Style

Tags:

• magnetic
• levitation
• atmega8
• bascom
• phase
• lead
• loop
• proportional
• differential
• regulator
• atmega

[nikwalnikwal]

could'nt you just use the light barrier to turn off a transistor and let it run free?

[strobosk]

hehe, it's not that easy :)

[ossumguywill]

@strobosk it seems to me like it would eventually reach a stable frequency where the object bobs at the right speed to levitate below the laser line... I don't see why you need the micro unless you want distance control.

[strobosk]

@ossumguywill for levitation you must find correct coefficients P (proportional) and D (differential). So that why you need a microcontroller. For reading A/D channel and than calculation of equation.

[hummesse]

So is the coil just on/off or can it sense the distance to the object and adjust accordingly?

[strobosk]

The coil is controlled with pwm using PD (proportional diferential) regulator. The distance is measured with a/d converter on light sensor.

[SlavaVB]

I wonder if you can smooth it with PWM and some formulas for predicting its location when in freefall (taking into account the magnetic strength dropoff)

[PhxSt0rmz]

May I ask how many volts your running in that coil?

[smartino84]

grande canzone !!!

[snowman4839]

that's fantastic! great job!

[PurplePhase]

svaka cast!! Dober projekt!

[volazh123]

E lepo : )