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Third Party Hardware

Negative Current Issue

Submitted by uwdxa on Tue, 2019-01-22 01:16

Hello,

Im using the FSESC 6.6 Board from Flipsky with the motor lehner 3080 -> http://www.lehner-shop.com/en/inrunner/series-30/3080.html

The motor is running in FOC mode sensorless but with an negative current. thus, the speed controller can't work and the rpm raises to max.

How I can avoid this? Does anyone have a solution for this strange behavior?

Thanks a lot!

Alex

maytech mto91hbm-nh motors hal sensor

Submitted by nolander on Thu, 2019-01-10 00:01

Hello, 

I am using maytech mto91hbm-nh motors and the RPM measurement in the VESC tool is pretty good when the motors are spinning in one direction, but in the other direction the RPM measurement will suddenly spike to the opposite direction, which causes the speed control to fail (Seems the vesc stalls the motor when this happens, and i have to reload the motor config in order to make the speed control responsive again). 

All four motors seem to have the same issue.

Driving Issues Due To Reversed Current Amplification

Submitted by F4metz on Mon, 2018-12-17 16:45

Hi,

I cloned the VESC MINI4 into a different form factor that was mandatory for my project. Due to layout reasons i reversed the current amplification, so the phase current is measured negatively (reversed IN+ and IN- at the amplifier). I thought this can easily be solved by inserting a negative amplification gain. This is not the case as I noticed and after digging deeper into the code I got an idea why, but I am not able to solve it inside the code.

HW4.12 Firmware trouble

Submitted by CTSchorsch on Wed, 2018-12-05 21:09

Hi Forum,

i have a VESC HW4.12. I updated the FW via VESC Tool to the VESC_default.bin. After that, and waiting 10s i tried to reconnect, but the USB Device is not recognized on my pc.

I can download newest FW from GIT and newest bootloader via ST-LINK, but the VESC is still not working. No ttyACM device...

Is there anything i made wrong ?

 

Regards

Georg

Differential steering with 2 VESC driving 2 BLDC in FOC mode with joystick

Submitted by unimotion on Sat, 2018-11-10 18:59

Hello I'm looking for a first advice about how to control my robotic chair project 

Here is what I can do now:

I'm able to move my robotic chair on a tank like mode : 2 BLDC motors each motor connected to it's own VESC, each VESC wired to one channel of an RC receiver that receives signal from a RC transmitter (Flysky FS6) on wich I have setup 2:channels mixing to get differential steering. It works very well !

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