BLDC driver based on GD32

wstcllx

BLDC driver based on GD32 [Copy link]

 

BLDC driver based on GD32

Brushless motors may seem simple, but they can be very complex to drive. As an electronics enthusiast, I just tried it out with the spirit of a newborn calf not afraid of a tiger. I didn't have much time. So the things I made are just a look, I hope you don't criticize me. Without further ado, here is the block diagram.

LED, button, timer, PWM, and ADC. Everything else is going smoothly, but the ADC of PA6 is very strange. The op amp output cannot be brought up. Connect the power supply and ground. The ADC value changes again. Don't manage it yet. Let's make it run first. Add a piece of code. Use simple AC,,,,CA. Try it first. It runs normally as shown in the small video. But the noise and jitter are relatively large. The speed cannot be adjusted at will.

From the above figure, we can see that the H-bridge output is basically adjusted through PWM, and then the voltage and current are continuously sampled to determine the output state, thus forming a feedback loop to make the motor run stably. It seems so simple to say, just do it. Draw a circuit and make a board first.

[attach ]417169[/attach] [attach]417169 [/attach]

Solder the components. Connect the power supply. The voltage is basically normal. Start writing the program. I am not familiar with it at first, and I am a little frustrated. GD32E231 cannot use the Jlink recognition method according to the usual routine. But I finally got it done.

Start coding.

First, get the necessary configuration done.

OK, the hardware is basically normal. The next project seems to be quite large. For a novice in motor drive, it has reached a bottleneck. The reason is as shown in the figure below.

This is TI's data. I'm confused. I feel like I can't finish it now. So I'll deliver it first.

wstcllx

Attach the program and schematic diagram.

The program is in the GD32-Liulx folder, and the others are official routines.

wstcllx

Video

wstcllx

https://v.youku.com/v_show/id_XNDIyMjkyNTI1Ng==.html?spm=a2h3j.8428770.3416059.1

lightxixi

OP, if you have time, upload a complete word version.

06010601

I would like to ask what is the power of the motor used?

wstcllx

Hello, the word document has been uploaded

wstcllx

lightxixi posted on 2019-6-11 14:03 OP, if you have time, upload a complete word version

Uploaded

wstcllx

06010601 Posted on 2019-6-12 17:56 I would like to ask what the power of the motor used is

I estimate it to be around 100 watts. But my power supply is not good enough. I need to use PWM to limit the current.

BigLEO

英尚微电子

Thanks for sharing~ Let me learn~~ Thank you for your hard work~~~

lightxixi

wstcllx posted on 2019-6-16 22:49 Uploaded

Okay, thank you for your hard work~