Search found 20 matches

by Thor
31 Jul 2018, 13:19
Forum: VESC Projects
Topic: Solar car races
Replies: 61
Views: 13226

Re: Solar car races

The push-pull postdrivers are the current amplifiers. The IR2110 are only used for voltage amplification and level shifting. The MOSFETs I am using have quit substantial input capacitance. The IR2110 would have been too weak to drive them fast enough and it loweres the impedance as the gate capacita...
by Thor
30 Jul 2018, 13:50
Forum: VESC Projects
Topic: Solar car races
Replies: 61
Views: 13226

Re: Solar car races

The sign is swaped. An easy fix is to use a negative gain.
by Thor
30 Jul 2018, 12:50
Forum: VESC Projects
Topic: Solar car races
Replies: 61
Views: 13226

Re: Solar car races

What branch did you use? There are three: master, HSWR2 and Revolter100. - master is a unchanged copy of benjamins original repo. Its currently at FW3.34 - HSWR2 is a hacked version that supports my "old" HSWR V2 hardware. It changed since then! I did not push all changes to the github rem...
by Thor
28 Jul 2018, 12:38
Forum: VESC Projects
Topic: Solar car races
Replies: 61
Views: 13226

Re: Solar car races

Hi gv260ea! I am so happy that someone found my little project and thought it's worth while to rebuild it! Firstly: Changing the voltage divider is not optional for two very good reasons: 1) The dividers are designed for 60V. Going up to 120V means that the controller is exposed to over 6V at its AD...
by Thor
12 Nov 2017, 22:54
Forum: VESC Projects
Topic: Solar car races
Replies: 61
Views: 13226

Re: Solar car races

Hey, nice to here there is still some interesst. I see you posted at Fallens thread, too. Do you have some specific scenario to use a VESC+ for? The latest commits in my github repo contain some minor bug fixes and optimisations. Beyond that the design is pretty much final. At the moment two prototy...
by Thor
14 Sep 2017, 13:24
Forum: VESC Projects
Topic: Solar car races
Replies: 61
Views: 13226

Re: Solar car races

Mhh, that const is interessting but I can only find references to it in the BLDC code (mcpwm.c). I only use FOC mode and the issue is there, too. Therefore I doubt that this is the cause to the problems. I also noticed that in FOC mode the triggered graphs are not 0 centered. It typically does not m...
by Thor
14 Sep 2017, 13:08
Forum: Related Hardware
Topic: High Power VESC
Replies: 76
Views: 28132

Re: High Power VESC

Well, it is open source. That does not mean that I use github as my official release channel. If you want to use my design you will have to use my EDA toolchain, too. ;)

Thor
by Thor
20 Aug 2017, 14:57
Forum: Related Hardware
Topic: High Power VESC
Replies: 76
Views: 28132

Re: High Power VESC

Hi, just found your project of implementening what I call a VESC+ xD First up the DRVs are very sensitive from end to end. Benjamin himself had issues with the DRV dying because of a inappropriate layout. I am not exactly suprised that it did not like your wiring^^. Just forget this chip. I realy do...
by Thor
20 Aug 2017, 13:55
Forum: FOC
Topic: Other voltage scaling.
Replies: 11
Views: 2255

Re: Other voltage scaling.

Well, the STM32s are pretty unforgiving regarding over voltage^^ Not a AVR which can run on 12V just fine xD I just posted about the voltage divider issue in my own thread regarding the HSWR. The firmware indeed does not like it if the division factor is changed. To get it running anyway I just left...
by Thor
19 Aug 2017, 12:56
Forum: VESC Projects
Topic: Solar car races
Replies: 61
Views: 13226

Re: Solar car races

Hey, me again! I have a mysterious issue with the observer algorithm. I ignorred it for now because I found a crude workaround which I now want to fix for good. The problem occurs as soon as I change the division factor of the voltage dividers for the phase voltage measurment. As long as the Motor i...

Go to advanced search