General discussion

Hi,

at the moment I am wondering about if I need phase voltage sensing for the motor control. I am designing my own hardware with the VESC Software. I will use BLDC mode and Current control. Is it useful to measure the phase voltage or do I need it for the software control? I didn´t find anything yet. Usually traction inverters don´t have phase voltage so I did not find any advantages. 

Does somebody have experience with that? 

Thanks and best regards,

Flo

hello,

im probably being blind but is there documentation for the uart interface?

im looking to have position control and feedback via uart, but i cant find a list of commands or a lib that includes them.

any help would be greatly appreciated.

I have been using the mobile app and all was good until I started to see this msg and it won't let me connect. it says "could not read firmware version. make sure that the selected port really belongs to the vesc"

I have a BoardUp Bolt+, a foldable electric skateboard.
The metallic battery case, as shown in photo, hosts a 10S2P li-ion battery and an ESC and a 12.5 x 8 x 1.8 cm space containing the ESC.
Each wheel contains a 300W hub motor and has a big black "cable" including a set of 3 medium-sized + 3 little-sized cables.

Questions:
- can I replace the ESC with a VESC in this case?
- do I need 1 or 2 VESC?
- do I need some extra adapters for the cables?

Deal All,

I have a question regarding motor braking using VESC.

Is there a way to brake the motor with shorting the motor phases? In my application the returning of energy is not possible. Also the braking time has to be as short as possible.

Motor is running freely with no load so it has low inertia.

Thanks.

Regards,

Rok

Hi Everyone

I'm working on a project, where I'm going to use 8 VESCs (4.12), to control some diferrent motors for a machine I'm thinkering with :)

I just set up a V 4.10 VESC and tested with a small 35mm motor, with no load attached. Running quite smooth.

But the higher the speed, the more negative the reported motor current (up to -1A @ 60'000 ERPM) and also batt current. Constant speed, so no regeneration situation.
For this idle testing, I use a power supply. It displays that 1..2A are going into the VESC, which is as expected.

Where does this negative current reporting come from?

Hi all,

i am also trying to get an answer by putting this to another forum. But maybe my question is so silly, that it doesn t deserve an answer...

Is it possible to add a open loop comm command in the commands.c ? Like COMM_SET_OPEN_LOOP (Current, RPM)

As far as i know the open loop is already implemented and could be used in the new firmware in sensorless mode but i need it in sensored mode and i need to change the current value while running. To do this a UART command would be great.

I just wanted to know if VESC is compatible with ROS. Do i need to use an arduino as a controller or is my pc with ROS enough to control the VESC?

Hi,

I have mostly setup my ESC and BLDC and I'm currently tuning the motor.

I'm using FOC control with hall sensors. The motor detection works and consistently finds the R, L, Flux Linkage and PI parameters for FOC. Hall detection works consistently too.