1,352 questions
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How to implement Follow the Gap method for Ackermann steering car in ROS 2 Gazebo?
I am trying to implement the Follow-The-Gap (FTG) algorithm for an F1TENTH-style Ackermann steering car in ROS 2 Humble, with Gazebo simulation.
I have completed the basic functionality: smoothing ...
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55
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How can I fix point adding error on a quartic trajectory generation in matlab
I am working on generating a quartic trajectory with a quintic finish with known points and an acceleration limit on matlab. After creating this trajectory using the constants I calculated I am trying ...
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ValueError: Invalid Node initialization: from_node.orientation=None in steer method [closed]
I am working with a robot arm simulation, and I’m encountering an error related to the steer method. Specifically, I get the following error message:
ValueError: Invalid Node initialization: from_node....
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41
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Implementing probabilistic velocity motion model
I'm implementing in MATLAB the probabilistic version of velocity motion model (VMM), as described in the book "Probabilistic Robotics", page 97. The pseudocode is the following.
How can I ...
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32
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Trouble converting between GameObject space to Joint configuration space for FABRIK algorithm Inverse Kinematics
Given a mouse click, I am trying to use the FABRIK inverse kinematics algorithm to figure out the best joint orientation for a robot arm such that the end effector is as close as possible to the ...
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Missmatched Pole-Zero Plots Between Simulink and XFLR5
I'm currently trying to create a 6DOF fixed wing uav model inside simulink with this playlist. I created a plane model inside xflr5 and followed the steps inside the video for transferring to the ...
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Unable to Install Gazebo with ROS 2 Humble on Ubuntu 22.04 jellyfish (Packages Not Found) [closed]
I am trying to install Gazebo for ROS 2 Humble on Ubuntu 22.04 (Jammy Jellyfish), but I keep running into package errors.
I have tried running the following commands:
sudo apt update && sudo ...
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27
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Angle of rotation of U and V angle in a 5 axis head
I need some help with working out the tilt angle V and rotation angle U of this 5 axis design. I want the head pointing at a desired tilt angle (say 45 degrees) to a plane perpendicular to the X-Y ...
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38
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Mitsubishi Melfa Basic VI - Palletizing - Syntax Error assistance
I am currently working on my first Robot Palletizing program using Mitsubishi's Melfa Basic VI. I have a robot set up in the shop for testing. The test program shown below is basically right out of ...
- 109
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How to manipulate the state of objects using the states array?
I have a robomimic environment, and I am trying to modify the positions and velocities of objects in the environment manually for a data augmentation project. How can I figure out which indices in the ...
- 433
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Fixing fluctuations, precision errors and more in velocity control algorithm. Is my approach correct?
Problem:
I want my "Follow Coordinates System (FCS)" to reach the position of a "Set Coordinates System (SCS)" while maintaining a trapezoidal velocity profile using given ...
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I just cannot wrap my brain around how to do this Python PID controller
So the goal for this project is to create a robot that is able to complete a course in a predetermined time. I attempted to create a PID controller and setup a python script to test the code. Right ...
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No signal on S-BUS OUT port on the Pixhawk 4
I have a problem/ question regarding the S-BUS OUT port on the Pixhawk 4.
My setup is as it follows:
transmitter: Radiomaster TX16S with RFD TX-MOD v.2
receiver: RFD 900ux 2.0
a rover with 2 stepper ...
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2
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80
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Processing 3D Local Rotation
So I am trying to emulate a robotic arm in Processing, and have most of it working. The problem I'm having is that the last arm segment (excluding the pinchers) needs to rotate along it's own relative ...
- 61
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PyDrake Optimization problem freezes summing symbolic variables
I'm trying to replicate the following paper https://groups.csail.mit.edu/robotics-center/public_papers/Platt10.pdf regarding planning in the belief space.
To do so, I'm using pydrake.solvers to solve ...
