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Copyright 2018 ROS Industrial Consortium | ||
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Redistribution and use in source and binary forms, with or without modification, | ||
are permitted provided that the following conditions are met: | ||
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1. Redistributions of source code must retain the above copyright notice, this | ||
list of conditions and the following disclaimer. | ||
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2. Redistributions in binary form must reproduce the above copyright notice, | ||
this list of conditions and the following disclaimer in the documentation and/or | ||
other materials provided with the distribution. | ||
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3. Neither the name of the copyright holder nor the names of its contributors | ||
may be used to endorse or promote products derived from this software without | ||
specific prior written permission. | ||
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | ||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR | ||
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | ||
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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# Universal Robots UR10e Description (MJCF) | ||
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## Overview | ||
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This package contains a simplified robot description (MJCF) of the | ||
[UR10e](https://www.universal-robots.com/products/ur10-robot/) developed by | ||
[Universal Robots](https://www.universal-robots.com/). It is derived from the | ||
[publicly available URDF | ||
description](https://github.com/ros-industrial/universal_robot/tree/kinetic-devel/ur_e_description). | ||
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<p float="left"> | ||
<img src="ur10e.png" width="400"> | ||
</p> | ||
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### URDF → MJCF derivation steps | ||
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1. Converted the DAE [mesh | ||
files](https://github.com/ros-industrial/universal_robot/tree/kinetic-devel/ur_e_description/meshes/ur10e/visual) | ||
to OBJ format using [Blender](https://www.blender.org/). | ||
- In this process, the Z axis of the joint that a link is connected to should point up. | ||
2. Processed `.obj` files with [`obj2mjcf`](https://github.com/kevinzakka/obj2mjcf). | ||
3. Added `<mujoco> <compiler discardvisual="false"/> </mujoco>` to the URDF's | ||
`<robot>` clause in order to preserve visual geometries. | ||
4. Loaded the URDF into MuJoCo and saved a corresponding MJCF. | ||
5. Added a tracking light to the base. | ||
6. Manually edited the MJCF to extract common properties into the `<default>` section. | ||
7. Manually edited colors to match UR10 colors. | ||
8. Added position-controlled actuators and joint damping and armature. Note | ||
that these values have not been carefully tuned -- contributions are more | ||
than welcome to improve them. | ||
9. Added home joint configuration as a `keyframe`. | ||
10. Manually designed collision geometries to be as realistic as UR10's shape. | ||
10. Added `scene.xml`, which includes the robot, with a textured ground plane, skybox, and haze. | ||
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### Notes | ||
Although the model is stable in the `scene.xml`, you might see unstable behavior when combined with | ||
other models (i.e., Robotiq-2F85 gripper). Switching the integrator from `Euler` to `RK4` helps in | ||
these cases. | ||
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## License | ||
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This model is released under a [BSD-3-Clause License](LICENSE). |
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