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Drone application with pixhawk

Submitted by Kabroc on Tue, 2020-05-12 16:41

Hi, My configuration is he next, a drone controlled by pixhawk that communicate through UAVCAN to 4 Vesc which command each a motor. i'm having issues about BLDC and FOC nether of them work. I try the parameters detection for both mode, I get parameters but when i try them the motor don't spin correctly: I tried to tune them myself but results are not great.

 

Is there someone who work on something similar and can gives me some tips? Thank in advance.

Electric/ Gas Hybrid

Submitted by kcswimrac on Wed, 2020-05-06 17:05

I'm trying to use a VESC 6.0 board in a slightly different application. 

I'm trying to build a gasoline/ electric hybrid. Is there a way to set the throttle curve based on time? Something like 0-100% throttle functions normally for the first 10 seconds, then tapers off down to a 0-(-5)% or so for a regen based on battery charge voltage? 

Basically think of it as I want the BLDC motor to function as a boost for 10 seconds every time the throttle is applied from 0%, then taper back off to charge the battery pack from the Gasoline power plant.

Designing a robust power stage using Mosfets

Submitted by ripperpc on Tue, 2020-05-05 08:04

Hi, 



I have been reading about protecting mosfets for 100V designs - and I am a bit confused,

different app notes have different suggestions and I am not sure as to the purpose for all of them,



I am looking to create a high reliability design - the one that should not fail, what are the protection mechanisms that I can put in place? - essentially asking how to design the power stage.



Here is what I have so far:



Optically Isolating VESC power and control

Submitted by ripperpc on Tue, 2020-05-05 07:43

Hi!



I wanted to isolate (optically ?)  the VESC control board from the power board, since I plan on working at 300V DC, and here is what I have so far:



- Digital and PWM signals go through: A4506 opto isolator (HCPL-4506)

- Current sense through ACS series (712/758 - depending on current requirements of the design)

How to select COM port

Submitted by Heimfried on Mon, 2020-05-04 22:23

Hallo all,

How to select in VESC Tool the COM port of PC for USB connection to VESC6?

Menu connection: Port "COM1" is the only port shown. Clicking button "refresh serial port list" results in nothing new, only COM1.

The last working connection was shown as COM6, but after successful running motor wizzard the tool lost connection when I tried to select the control input. (Should be ADC, wired potentiometer.)

Regards, Günter

 

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