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VESC with asynchronous motors

Submitted by afbbfa on Fri, 2022-07-29 22:51

Greetings!

First of all, I need to clarify several things. We're building different 3 phase linear induction and linear permanent magnet motors in our lab. We used;

completely discrete h bridges (3 pieces for each phase)

bldc motor driver from amc (using fake hall input)

 

and all motors work flawlessly ! of course using sinusoidal or ramp changes motor characteristics but it is another topic.

For our last robotic application, we want to use vesc for linear induction motor.

 

Rc controller more than one input ?

Submitted by zebb.guy@moshon... on Tue, 2022-07-26 14:51

Hi all 

Does anyone know if its possible for vesc to read more that one input from the controller ?

 

for example I’m trying to set up an tank style control i need

right stick - forward - brake - reverse  

left stick - forward - brake - reverse

 

my board seems to only have one channel input 

(Dual FSESC4.20 Plus(Pro Switch))  ?

Current became not stable over time

Submitted by AnthonyFR on Mon, 2022-07-25 23:21

Hi,

I am user an older original 4.12 hardware on a ebike with BionX rear motor and 48V battery.

It works pretty well, but after 15 to 20 minutes the motor seems bugging a little bit, current is not stable anymore.

Any idea to investigate this issue ?

Thanks

Anthony

 

Image : https://ibb.co/zVPyDR0

 

Hall effect sensor type for Flipsky 4.20

Submitted by braydinjones on Sun, 2022-07-24 01:06

Hello everyone. I have a question about operating a BLDC motor in FOC mode with the Flipsky 4.20. What type of hall sensors is this controller compatible with -- analog, digital, or both? I've wired up everything correctly but am still getting "bad hall detection results." I'm pretty sure the last time we oscilloscoped the hall sensors we got an analog (sinusoidal) signal. Any help would be GREATLY appreciated!

Robot traction drive application

Submitted by cjmssmd on Tue, 2022-07-19 03:37

Vehicle is a skidsteer robot with Pixhawk autopilot.  Autopilot drives left & right motors via PPM (driving duty cycle mode on the fsescs).  Pack is 460Ah 15S LiFePO4 (i.e., 50v pack).  

ESC: fsesc6.7 

Motor: FreeRCHobby 6384 motor, 50Kv, 14 Poles w hall sensors.  Motor connected to a 20" diameter lawn mower wheel through 16:1 reduction gearbox (from https://banebots.com/)

Firmware version BETA 55

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