Ultra Low Speed Servo Control of BLDC Motor using FOC

Рет қаралды 6,259

6 жыл бұрын

This is a low cost high performance low voltage servo drive project. Plan for high performance gimbals, servos and robots. Ultra low speed control has now been implemented and more fatures are under development.

Пікірлер: 19

@tunguyen-pz6dq 6 жыл бұрын

congrat, the rotation look smooth. BTW the back EMF must be really small and full of noise, which algorithm did you use to detect rotor angle?

@dravincezhang2906 5 жыл бұрын

We used a magnetic encoder to detect the rotor position

@joshuavincent7884 Жыл бұрын

back emf not suitable for low speed application

@warrenschoeberlein9271 5 жыл бұрын

I am building a precision pan-tilt camera mechanism and this appears to be an excellent solution for BLDC motion control. Would you be able to share any development information? Is this a product that can be purchased?

@Mirandorl 6 жыл бұрын

Nice! Whats the stall torque? Any thoughts on what the cost of purchase might be for say a pack of 8 plus controllers?

@dravincezhang2906 5 жыл бұрын

The stall torque is approximately 100mN*m. The project has not been completed, so it is currently unavailable

@abdimarouen 2 жыл бұрын

What is the name of the Encoder plz?

@disablewong 6 жыл бұрын

How could u achieve this?! Can u shade some light on information like the driver u've used?

@dravincezhang2906 6 жыл бұрын

I use MP6536 as power stage. It inherits driver and MOSFETs，and can provide 5.5A current at 24V.

@disablewong 6 жыл бұрын

thanks dravince! Could you advise about the ESC you used? i mean which type/brand you are using? it's for your DIY project? or commercial one?

@dravincezhang2906 6 жыл бұрын

Do you mean control algorithm, or somethings else?

@disablewong 4 жыл бұрын

@@dravincezhang2906 Sorry I reply toooo late since I was busying for my job yes, I mean control algorithm. Actually I wana make my maxon EC90 flat motor to rotate at a really slow speed, which is 0.33 rpm. So your project is really inspiring to me. Now, I could only get it at around 30rpm by ST motor Control Workbench with FOC 4.2 library. How do you get this insane 0.25 rpm? Could you kindly give me some advice? You might email me disablewong@gmail.com THanks in advance!~