Questions tagged [transmission]

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Joint does not move after applying effort to it

I am working with a 4-wheel mobile robot. I placed a transmission on each wheel joint in order to output an effort to the actuator, by forwarding the same effort (effort->effort). However, I only ...
Francisco Castro's user avatar
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design documents for ros2_control transmissions

Does anybody know where I can find architecture design documents for ros2_control transmissions? I'm interested to know: Why ReadOnlyHandle uses a pointer to ...
Yasushi Shoji's user avatar
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How to access URDF info inside a transmission interface?

I'm trying to write a custom transmission interface for ros2 control for the robotiq 3f, and I need access to the joint limits defined by the urdf, but the Joint handle does seem to contain that info, ...
Peter Mitrano's user avatar
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How to define transmissions with ros2 control

From my current understanding, if you want to use ROS2 Control with gazebo, you have to use one ros2_control tag with type system...
Darkproduct's user avatar
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No matching hardware interface found for 'hardware_interface/JointStateInterface' while loading interfaces

I have a robot defined in a URDF file that I want to use in gazebo with ros-control. The robot has multiple non-fixed joints, but I only want to control the wheels. The other non-fixed joints should ...
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How to control a rotating joint in velocity

Hello everyone, I'm trying to control a rotating joint type "continuous" in velocity, and simulate it in Gazebo. This is the URDF joint definition: ...
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ROS publishers & subscribers still transmitting data after roscore closed

Hi, I am working on a scale city project where we will have some cars running along a track connected to a watchtower. We have decided to use ROS for the project and are running Kinetic on Ubuntu 16....
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Integrating transmissions in ros_control using URDF

We are using ros_control for controlling the arms of our robot (seven joints and seven actuators, simple transmission). However while launching the hardware_interface(along with the transmissions) ...
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1 answer
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Why does Effort Joint Interface cause the joints to collide

One of the hardware interfaces from controller_manager package is EffortJointInterface, but when I define transmission with this hardware interface and run the ...
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differential transmission with ros_canopen, HOW to?

Hello ROS Community, I have already tried to ask a similar question here: #q304832, however no answer was received so i am trying to ask again from a different perspective. I am working on the control ...
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1 answer
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Create Transmission between two parallel link like gears in urdf?

hi . how creat Transmission between two parallel link like gears in urdf ?? i have two gears in my urdf . when rotate gear 1 , gear 2 is fixed and not rotate! i want rotate two gears in same time . ...
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Network data loss using 4 robots

I have a group of four robots. Right now I am doing testings on the data transmission over a wireless network, the output of rqt_graph is shown below. Robot 1, 2 ...
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How to send right velocity to model in gazebo?

Hi, I am sending velocity command to gazebo model but it only reflects 35% of commanded velocity. I tried to tune PID gain in config file but it doesn't affect anything. In xacro file also, changing ...
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Using a joint with motor on other than parent link thru Transmission

I have made a custom robot arm and I'm making an URDF file for that. situation: lower arm, mounted on base upper arm mounted on lower arm motor for upper arm mounted on base motor and upper arm ...
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Using gazebo_ros_control with SDF instead of URDF

My robot has a closed loop linkage, and therefore I cant use a URDF file as URDF only supports tree strucutres. Since SDF supports graph structures, I need to use that in order to simulate my robot. ...
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Problem with python parser URDF

Hi everyone, I'm having some troubles extracting the information of a URDF file from the parameter server. In the launch file I load the robot in the parameter server with no problem or warning, in ...
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How to Monitor the data transfer

Hi everyone, I would like to know how to monitor all the data transfer between ros. There are two computers connected by using same roscore master. I want to measure the amount of data transfering ...
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Transmission and track chain

I added a "transmission" block in the URDF to describe the model of the tracks of my robot... My tracks are triangular, with an active sprocket and two passive sprockets. The active sprocket ...
Myzhar's user avatar
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How to integrate transmission into RobotHW

We have migrated our robot base driver to use ros_control. That works well, execpt for the transmissions. There are transmissions in the URDF Model: ...
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ROS Answers SE migration: URDF or Xacro?

I am new to ROS and I have been using SolidWorks Exporter for generating URDF for my robot. Things didn't go well adding transmissions and controller plugins, Gazebo crashes if I spawn the urdf with ...
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Running Moveit on Indigo with UR5 fails

Installed Moveit (*sudo apt-get install ros-indigo-moveit-**), and UR from source (cd src/; git clone https://github.com/ros-industrial/universal_robot; catkin_make;). This is what I'm getting: ...
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getting my custom transmissions to work in gazebo

I'm having problems getting my model to work in gazebo: when I spawn my model in gazebo, I get a segfault. I'm almost sure it's due to my custom transmissions, because the model is working when the ...
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Some recommendations to develop my own mechanism_model package

Hi Ros Community, I want to develop my own mechanism_model package to simulate and control in Gazebo. The actuators as you know are primates, but the rotational joints. Then I want you to give me some ...
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2 answers
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PR2 controller joint: control 2 joints with one motor

In our robotics hand, I have to control 2 joints with one motor: the distal and middle joints are mecanically linked together, so you issue a command to a "super joint" which moves both of ...
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