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Questions tagged [simulator]

A computer environment where robot parameters can be tested without the need for a physical robot.

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0 votes
2 answers
170 views

How would you sync a real life accelerometer with an accelerometer in a simulation program

How would you sync a real life accelerometer with an accelerometer in a simulation program. In this case I am using MuJoCo for simulation and a Gy-521 is my physical, real life accelerometer.
0 votes
0 answers
11 views

I exported my ROV model from SolidWorks to Simscape. Now I have my model in Simscape, but I don't know what else I can do

I added a transform sensor so that I can see the gravity influencing my body, however I want my ROV to move in the simulation in the 3 axes: x, y and z. I heard that I need to create an environment ...
0 votes
1 answer
622 views

Why is Webots running so slow on my computer?

The provided sample simulations are running very slowly in Webots. How can I improve this? I am using Webots R2022b on Ubuntu 22.04.
0 votes
0 answers
8 views

Simulating Adhesive Robotics Interactions

I'm currently working on a project where I need to simulate robotic interactions (using ROS/ROS2) with adhesive or sticky materials. (The goal is to peel a sticker using a robot arm) I'm a bit ...
3 votes
2 answers
2k views

How do people create complex models/worlds in the Gazebo?

I'm trying to learn Gazebo and I'm kinda puzzled about how difficult it is. I'm using the latest LTS version (Gazebo Garden) and following the intro tutorials. I'm manually editing sdf files, with ...
0 votes
2 answers
547 views

What robotic simulators simulate the reflectivity of objects?

I want to simulate the reflectivity of objects in a simulation because I want to use a 2D laser scanner to detect certain objects that have higher reflectivity than other objects in a particular scene....
0 votes
0 answers
418 views

How to save world in Gazebo and go back to that world when I hit reset simulation?

I'm a beginner with Gazebo and just installed Gazebo Garden (v7.5.0) on my Ubuntu 22.04 laptop. I can open a new world, add some shapes/entities to it and save the world to ...
2 votes
1 answer
366 views

Choosing suitable simulator for a swarm of AUVs [closed]

Which of the following simulators is the best choice for simulating a swarm of AUVs working together to perform a mission? Please clarify your reason and if you know any better choice, I would greatly ...
0 votes
1 answer
130 views

Read device value from another robot controller in Webots

I'm using Webots R2022b and I would like to have a supervisor controller that applies an algorithm on the camera data recorded by the Mavic2Pro drone on an another robot. But, when calling the ...
0 votes
1 answer
333 views

How can I draw in the 3D window in Webots?

I would like to draw some text or objects in the 3D view of Webots, how can I do that?
0 votes
2 answers
153 views

"modern contact dynamics" - Why are spring-damper contact models not being used anymore for dynamic simulations in robotics?

While researching different physics engines for dynamic simulations in robotics I found the following statement on the MoJoCo documentation website: Physics engines have traditionally separated in ...
0 votes
1 answer
1k views

Resetting position of e-puck in Webots using Supervisor node - problem with getting a handle to the robot

I am writing a method (Java) that will reset the position of e-puck in Webots. I have been following tutorial on Supervisor approach. I have two controllers in my project: SupervisorController ...
1 vote
1 answer
295 views

How can I use the pen Node on my custom robot in webots?

I am starting to attempt a new project about a mechanical arm using a pen to draw random things as I move the robot's arm. so to do that Webots already has a node named "Pen" (Webots doc, ...
7 votes
2 answers
824 views

Measuring speed of movement in Webots

I have been experimenting with different fitness functions for my Webots robot simulation (in short: I'm using genetic algorithm to evolve interesting behaviour). The idea I have now is to reward/...
1 vote
1 answer
186 views

Simulator for an adaptive, under-actuated robotic gripper

I am looking to build an adaptable robotic arm with under-actuated three (or four) fingered hands. Before I start shelling out money, I want to test my prototypes in a simulator which would ideally ...
1 vote
1 answer
58 views

Manually generate antipodal grasps for grasping

I am getting into robot manipulation using parallel grippers, and am learning about it, and programming grasping different objects. I have the 3D model of the objects I wish to grasp. The next step is ...
2 votes
1 answer
477 views

Simulator that allows your to test your real firmware inside a simulated world?

I am interested in learning more about how robotics are tested in simulators. Reading the Wikipedia article on robotics simulators I can't tell how the onboard firmware (the "brains" of the ...
1 vote
1 answer
35 views

AWS RoboMaker simulations + testing explained

I am trying to understand how AWS RoboMaker and WorldForge work, and am having trouble "seeing the forest through the trees," and might need someone to "explain it to me like I'm 5"...
1 vote
1 answer
279 views

I'm trying to understand an equation from a motor simulation $\dot w_i (u_ i ​ ,w_i,l _i ​ , \dot l _ i ​ )$

I have a simulated motor and I'm not understanding the math to control it. This is the equation for the force of the motor, also called an 'actuator'. $\dot w_i (u_ i ​ ,w_i,l _i ​ , \dot l _ i ​ )$ w ...
0 votes
0 answers
841 views

In MuJoCo why do some XML files have objects fall to the ground while others are just fixed above the ground?

Why do some models, or objects in a MuJoCo XML script fall to the floor while others don't? In the models files that come with the MuJoCo zip, the robot arm (arm26) does not fall to the ground while ...
2 votes
1 answer
572 views

How to program to generate robot URDF(Serial manipulator) when having stl file of each link with Python

I've tried : to use obj2udf library(PyPI) then It can generate 1 URDF per 1 STL(it doesn't work because I can't find how to program to change link name or add link and can't combine STL) so now I ...
2 votes
0 answers
32 views

Unmanned guard boat [closed]

I need an urgent help in my graduation project on unmanned guard boat. I need to control the boat autonomously and manually using ArduPilot and Arduino Uno. I just ask if anyone has the code, that ...
4 votes
2 answers
160 views

Suggestion for relevant non-complex simulator

I've recently started working on some localization algorithms like probabilistic road map and SLAM algorithms. What I'm looking for is a software that would help me in simulation for such algorithms. ...
2 votes
2 answers
206 views

Good 3D simulator for outdoor autonomous navigation

What's an appropriate tool for simulating a car driving in a simple closed-loop racetrack? I'm trying to implement the control logic for an autonomous vehicle, and I'd like to be able to first ...
14 votes
8 answers
875 views

Standalone (or capable of being) Robotics Simulator

I'm a software engineer who volunteers with a non-profit that introduces young girls to technology. We have recently been talking about methods of introducing these children to the world of robotics, ...
-1 votes
1 answer
2k views

How to generate a mesh file for URDF

Pybullet needs a mesh file to go along with URDF. Is there a non painful way how to generate one? Ideally I'd love to generate one from the URDF file itself, as it has all the boxed already defined ...
0 votes
1 answer
1k views

Simulator for NEMA17 (stepper motor) and A4988 (stepper motor driver) along with Arduino

I want to simulate an Arduino MEGA (or UNO) controlling a NEMA17 (stepper motor) using A4988 (stepper motor driver). I couldn't find the stepper motor and driver on TinkerCAD. Can this be done in ...
0 votes
1 answer
80 views

Free 2 and 3d simulators [closed]

What physics simulators exist which are open source/free? AI Gym uses a proprietary for-cost physics engine making it nonviable.
0 votes
1 answer
117 views

How to simulate a quadcopter using robotics simulator?

I am building my own autonomous quadcopter. I wish to simulate it using V-REP/Gazebo in order to tune the flight controller. I see that there are inbuilt models but they have properties(physical ...
2 votes
1 answer
3k views

Gazebo: moving joint with model plugin

This is my first week with Gazebo. The tutorials are clear (except for my dearth of C++ knowledge) but now that I'm working to move out on my own things are getting cloudy. I made a model comprising ...
0 votes
2 answers
4k views

gazebo import robot gives error

I'm trying to import the tutorial robot given at this link However this gives the following error: ...
3 votes
2 answers
1k views

Does simulink accepts robotics toolbox in matlab?

I'm trying to make a model for a robotic arm on simulink and then excute it on arduino controller but i want also to use robotics toolbox to calculate forward and inverse kinematics so i need to add ...
0 votes
1 answer
59 views

All Joint Angle values not converging to desired set point (I am using Roy Featherstone's Spatial Toolbox)

I need the robot joint angles to become the same as given (desired) joint angles. The kinematics and dynamics (used Spatial Toolbox) are correct and the motor models are realistic too. But out of 3 ...
1 vote
1 answer
74 views

Roy Featherstone toolbox robot model

I want to model these D-H parameters in spatial toolbox: Link: alpha, a, theta, d Link 1 : -90 0 theta1* d1 Link 2 : 0 a2 ...
4 votes
1 answer
118 views

3-DOF Robot Dynamics error in Robotics Toolbox

I am trying to compute dynamics of 3 DOF robot using Robotics Toolbox by executing this code: robot.accel(q, zeros(1,3), zeros(1,3)) But I am getting this error: ...
4 votes
3 answers
369 views

How can I simulate a changing environment with non-rigid objects?

Many robot applications (actually - the most practical and appealing ones) include the robot's reaction to (and impact on) the evironment, e.g. due to stochastic nature of the environment (e.g. when ...
6 votes
1 answer
983 views

Simulated kinect rotation around X [gazebo bug?]

I asked this question on answers.ros.org and gazebo.ros.org but still haven't got any answer. I'm posting my question here with the hope someone can help me. In our robot, the Kinect can be mounted ...
1 vote
2 answers
883 views

Validation of dh parameters

I am working on a concept of robotic arm for which I have fixed DH frames and parameters. Is there any way to validate the correctness of DH parameters and frames ?
0 votes
1 answer
59 views

Ontology/marketplace of robotics components and integration environment (BPEL or CAD for robotics)?

It should be possible to take the formal description of robotics components (in form of ontology, formal API descriptions or other kind of formal specification of the capabilities and requirements of ...
1 vote
1 answer
73 views

How can I run Tests/Simulations of Control and Motion Planning for a Bare Metal Robot?

I am using a raspberry pi to practice low level development with a differential drive robot; bare metal without an OS underneath. I've gotten to the point where I have a very small, single purpose ...
2 votes
0 answers
235 views

VREP - Attaching Baxter manipulators

Trying to add manipulators to the VREP Baxter robot, I can add the gripper easily enough by adding the manipulator object in a scene to the appropriate arm tip and setting its position and rotation to ...
1 vote
0 answers
70 views

Integrating Instantaneous Accelerations taken at discrete time intervals

I am trying to integrate instantaneous linear and angular acceleration taken at discrete time intervals (1/100 seconds, 100hz). data is collected beforehand, and integration is done offline, I only ...
0 votes
1 answer
52 views

What criteria should be considered when comparing 2 robot simulation/modelling software?

I want to compare MapleSim (Maplesoft) to SimMechanics (Mathworks) what should my criteria of comparison be?
0 votes
2 answers
398 views

What software can I use to 3d model and simulate my robot?

I would like to know if there is any software that I can 3d model my robot and insert that model into some sort of simulation software where I can run AI related code(in python). Any suggestions would ...
1 vote
1 answer
130 views

Is anybody using robot simulators? [closed]

Do you use simulators for developing your robot algorithms or do you test directly in your robot? I would like to get introduced into the simulators world, but don't know from where to start... can ...
0 votes
1 answer
93 views

Motion input in Simmechanics Matlab.

I have this figure in which motion is given to revolute joint in Simmechanics. In this, constant 2 is used and then integration is used. I want to know what will be effect of 2 here and how ...
11 votes
3 answers
2k views

Is ROS (Robot Operating System) mandatory?

Do we have to build ROS for robotic research/application? What is the main advantage? When or in which situations ROS is mandatory?
1 vote
2 answers
512 views

Bullet vs ODE to simulate robotic arm [closed]

For a research project at university I have been tasked with simulating a "robot arm". The simulation is to be compared with the real life version for accuracy. The arm will be lifting other objects ...
3 votes
3 answers
246 views

Using robotic simulator for prediction step in probabilistic localization approaches

Probabilistic localization approaches like Kalman or Monte Carlo benefit from an accurate prediction step. The more accurate the prediction step, the more accurate is the belief of the robots pose. In ...
1 vote
1 answer
1k views

What is the most realistic grasping simulator? [closed]

I am looking for a physics simulator which can accurately model a robot hand picking up an object. The main requirement is for accuracy / realism, rather than speed. It needs to be able to model soft ...