Search found 29 matches

by mthor13
17 Jun 2019, 10:24
Forum: General questions
Topic: Learning joint dynamics
Replies: 6
Views: 368

Re: Learning joint dynamics

Hi Coppella,

That completely answers my question, thank you very much.

If you are interested, then you can find a presentation of the research, from where I got the idea, here: https://www.youtube.com/watch?v=aTDkYFZFWug

Best Regards,
Mathias Thor
by mthor13
14 Jun 2019, 07:32
Forum: General questions
Topic: Learning joint dynamics
Replies: 6
Views: 368

Re: Learning joint dynamics

Hmmm, I don't think that would work as that would still make use of the joint dynamics specified by the physics engine (e.g., vortex). What I want is to replace the default joint (which takes inputs and outputs sensor values) with another function (i.e., a neural network that takes the same inputs a...
by mthor13
10 Jun 2019, 10:15
Forum: General questions
Topic: Learning joint dynamics
Replies: 6
Views: 368

Re: Learning joint dynamics

Hi RobAtLab, Isn't the Joint callback functions only for low-level control algorithms as the physical engine handle the joint? The reason why I want to completely replace the joint dynamics is that by learning to mimic the joint of the real-life robotic system it is easier to cross the reality gap (...
by mthor13
06 Jun 2019, 14:00
Forum: General questions
Topic: Learning joint dynamics
Replies: 6
Views: 368

Learning joint dynamics

Dear all,

I came across a study where they learn the actuator/joint dynamics instead of using physic engine calculations.

Is there any simple way of replacing the code for a joint with, e.g., a neural network that takes as input the command and outputs sensory values?

Best Regards,
Mathias Thor
by mthor13
16 May 2019, 08:49
Forum: General questions
Topic: How to rename the ROS interface node name?
Replies: 3
Views: 202

Re: How to rename the ROS interface node name?

Hi fferri,

Thank you very much for your replay. And also thank you for implementing this in rev4!

Best Regards,
Mathias Thor
by mthor13
14 May 2019, 07:03
Forum: General questions
Topic: Running several scenes in parallel
Replies: 4
Views: 243

Re: Running several scenes in parallel

Okay, thank you for the reply.
by mthor13
13 May 2019, 19:51
Forum: General questions
Topic: How to rename the ROS interface node name?
Replies: 3
Views: 202

How to rename the ROS interface node name?

Dear all, I am trying to run several instances of V-REP in parallel and I currently face a problem with the ROS interface. The problem is that when I open multiple V-REP instances they all start the ROS node called /vrep_ros_interface which triggers a shutdown request for that node. Is there a way t...
by mthor13
13 May 2019, 11:11
Forum: General questions
Topic: Running several scenes in parallel
Replies: 4
Views: 243

Re: Running several scenes in parallel

That sounds really really nice!

By "very soon" do you then mean weeks or months. Just because if it is weeks, then it does not make sense for me to implement my own alternative :-)

Best Regards,
Mathias Thor
by mthor13
11 May 2019, 10:42
Forum: General questions
Topic: Running several scenes in parallel
Replies: 4
Views: 243

Running several scenes in parallel

Hi everyone, It seems like I cannot run several scenes in parallel, does anyone know if this is even possible? I am planning on using V-REP for reinforcement learning and would therefore like several instances of my robot being simulated simultaneously to speed up the learning. I am open to any alte...
by mthor13
15 Apr 2019, 13:14
Forum: General questions
Topic: V-REP gradually slows down in Docker
Replies: 6
Views: 389

Re: V-REP gradually slows down in Docker

Hi Copellia,

I tried this and got the same result. Both the CPU usage and memory usage keeps increasing.
Note that this only happens when running in a docker container. Any ideas for what to test next?

Best Regards,
Mathias Thor