Search found 24 matches

by wdaehn
29 Nov 2017, 20:25
Forum: Feature Requests
Topic: Ramp support for Speed Loop regardless of input
Replies: 3
Views: 17429

Re: Ramp support for Speed Loop regardless of input

I just found in the current Vesc Tool the settings:

PPM -> General -> Positive/Negative Ramping Time. Isn't that the exact function I requested here?

If yes, you can close it on your ToDo list as it shows status "TODO" there still.
by wdaehn
17 Mar 2016, 17:02
Forum: Feature Requests
Topic: Ramp support for Speed Loop regardless of input
Replies: 3
Views: 17429

Re: Ramp support for Speed Loop regardless of input

Now being more familiar with the VESC, I would suggest to make that setting a global option, regardless of input method and motor operation mode. Basically the Nunchuk ramping constants but moved to the App Configuration General page. The obvious example is PID Speed Loop in PPM Control mode. You cr...
by wdaehn
17 Mar 2016, 16:18
Forum: Feature Requests
Topic: Preserve settings during firmware upgrade
Replies: 0
Views: 2208

Preserve settings during firmware upgrade

It is kind of boring to read-config-save xml - firmware upgrade - load xml - write configuration. Especially when you forgot to save the latest settings first. And if I am not mistaken, the App configuration data is not part of the XML, is it? One solution would obviously be to automate that in the ...
by wdaehn
12 Mar 2016, 13:49
Forum: Feature Requests
Topic: In speed mode apply brakes when < min ERPM
Replies: 5
Views: 3839

Re: In speed mode apply brakes when < min ERPM

Works very well, thank you. :D
From what I see you turn on regen braking. So it does not stop entirely at speed=0 but drive downhill slow.

Do you think we can go to the next level and try active braking? Really trying to hold the current position?
by wdaehn
03 Mar 2016, 17:06
Forum: FOC
Topic: FOC: Motor oscillating back and forth
Replies: 9
Views: 9063

Re: FOC: Motor oscillating back and forth

No expert myself yet but you never mention Kp, Ki?

see the other thread:
viewtopic.php?f=5&t=98
by wdaehn
29 Feb 2016, 14:14
Forum: Feature Requests
Topic: Positional control with halls
Replies: 16
Views: 26480

Re: Positional control with halls

Okay, granted. Let me ask a few questions: 1. Do you need a 360° movement only? I could see two cases, the one is a robot arm with direct drive as you say. The joint needs to rotate between +-180° only. The other application would be a robot on wheels (or a skateboard) which should drive 3 revolutio...
by wdaehn
29 Feb 2016, 09:54
Forum: Feature Requests
Topic: Positional control with halls
Replies: 16
Views: 26480

Re: Positional control with halls

As said in the other thread about Positional and Hall, the use case for the majority of people will be to use it as a servo motor. Not as a "clock". In that sense the target position is the number of revolutions the motor should make, e.g. with 100 revolutions it moves 1mm forward thanks t...
by wdaehn
22 Feb 2016, 12:01
Forum: Feature Requests
Topic: In speed mode apply brakes when < min ERPM
Replies: 5
Views: 3839

Re: In speed mode apply brakes when < min ERPM

Thanks, appreciated. I see two possible compromises. a) Yes, your fixed vector with a configurable power level called "initial brake force". Then we gain experience with it about the required force levels and their consumption level. b) If positional control works well for our use case, th...
by wdaehn
19 Feb 2016, 11:05
Forum: Feature Requests
Topic: Positional control with halls
Replies: 16
Views: 26480

Re: Positional control with halls

Hi Benjamin, would you care to comment? This feature would be super important for the cablecam project but also for all other industrial applications (servo motor instead of stepper motor). The requirement is a positional control feature based on the Hall inputs of the motor. The resultion of 1-2 mo...
by wdaehn
19 Feb 2016, 10:48
Forum: Feature Requests
Topic: In speed mode apply brakes when < min ERPM
Replies: 5
Views: 3839

In speed mode apply brakes when < min ERPM

The goal of the speed mode is to set the speed and the controller tries to get to that speed. This works very well except for low rpms. As soon as the target rpms is less than the configurable min ERPM value, it switches into an open loop mode. As a consequence, if the input signal says speed=0 the ...

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