VESC Firmware

What is the physical meaning of current KI and current KP in FOC mode?
Motor resistance and inductance not use for motor spinning, but it need to calculate current KI and current KP coefficient using time constant.
Also VESC measure L and R values not correct, real motor phase inductanse 90uH, VESC measure 50uH, real R is 150mOhm, VESC measure 100mOhm.
How to choose a time constant to calculate KP and Ki? Need I use VESC's measurements R and L or RLC meter values?

Hi Friends.

I am reading VESC code from Benjamin open source (BLDC master). But, it is very difficult to understand although I basically understand bldc motor control algorithm.

So do you have any guide or tutorial to read mcpwm_foc and mcpwm code and understand it? 

Thank you so much.

Hello,

I have a new kind of problem which i could not understand.

i have written a stand alone app to rotate motor at a fix speed.

but it only works when i connect VESC tool to it with USB.

otherwise the motor starts to cog and the motor vibrates very badly.

The code is shown below.

Hello dark wizards of firmware Javier here, im trying to use fabulous VESC firmware with 400V IGBTs to drive big motors.

The IGBTs have a minimum switching on-off time of around 2,5us.

So far im having issues with the SPWM modulation not respecting the minimum times resulting in nasty shortcircuits (IGBTs dont have the time to fully open or close).

Hi,

I'm trying to use VESC for a wide bandgap motor controller that I am designing but am concerned that the F405 cannot operate its control loop at 200kHz. Is it fast enough to do this? Should I look into porting the code base for the H7 series which can reach 480MHz? Alternatively, is it an option to run the control loop at a lower frequency (20kHz) and have the switching occur at 10x the speed. This would result in the PWM changing its duty cycle only every 10 cycles. Are there any issues that anyone can think of if I were to do this?

- Chai

Hi everyone - i hope someone has some input on what to do here,

I seem to have some issues running cruise control w/ dual-VESC 6 and the new Wand!

Hello,
Could someone explain to me what is different between the functions mcpwm_set_current(float current); and mcpwm_set_brake_current(float current);
 

Dear All,

I followed this instruction to set up the environment for the VESC:

https://vesc-project.com/node/310

I had a problem at the "make upload" step. I tried for 3 days but I cannot solve it.

Could you please tell me any solutions for this problem.?

Thank you so much.

I use ST-Link v2 ISOLATION.

SWD: GND, RST, CLK, SWDIO.

The ESC is powered by a 6S Lipo battery.

Hi all,

i have a custom PCB based on the public VESC6 schematic. I removed the fixed NRF Hardware and add a few solder pins instead to use the CPU Pins for some other stuff.

Now i want to use two of the pins as serial interface. Can i configure some kind of soft-uart ?

Thanks in advance

Georg

Hi All,

I have been using VESCs for some time now but am stuck on a problem I haven't seen before. I suppose I've discovered a bug in the VESC firmware. Basically the issue is everything appears to be working fine, until I yank the throttle up to full reverse (1 ms input PPM pulse length). After that it stays running at full reverse throttle even after I've returned the throttle to mid-stick position (1.5ms pulse length).