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Gazebo 1.9 fails to load URDF (which works in RVIZ and is validate by urdfdom)

asked 2013-09-23 07:19:43 -0500

Rasmus gravatar image

updated 2013-09-23 07:34:56 -0500


I have this irritating issue that I can not spawn my URDF model in gazebo. The model has been verified with urdfdom, and I can successfully use it in RVIZ.

When I try to do so I get the following error:

Warning [] multiple inconsistent <self_collide> exists due to fixed joint reduction overwriting previous value [false] with [true].
Error [] XML Element[sensor:ray], child of element[link] not defined in SDF. Ignoring.[link]
Error [] Error reading element <link>
Error [] Error reading element <model>
Error [] Unable to read element <sdf>
Error [] parse as old deprecated model file failed.
Error [] Unable to read sdf string [..entire urdf model here]

The actual urdf model is here:

<?xml version="1.0" ?>
<!-- =================================================================================== -->
<!-- |    This document was autogenerated by xacro from youbot.urdf.xacro              | -->
<!-- |    EDITING THIS FILE BY HAND IS NOT RECOMMENDED                                 | -->
<!-- =================================================================================== -->
<robot name="youbot" xmlns:controller="" xmlns:interface="" xmlns:sensor="" xmlns:xacro="">
  <!-- The following included files set up definitions of parts of the robot body -->
  <!-- misc common stuff? -->
  <!-- youbot base -->
  <!-- youbot plate -->
  <!-- youbot arm -->
  <!-- youbot gripper -->
  <!-- generic simulator_gazebo plugins for starting mechanism control, ros time, ros battery -->
    <controller:gazebo_ros_controller_manager name="gazebo_ros_controller_manager" plugin="">
      <interface:audio name="gazebo_ros_controller_manager_dummy_iface"/>
    <controller:gazebo_ros_power_monitor name="gazebo_ros_power_monitor_controller" plugin="">
      <interface:audio name="power_monitor_dummy_interface"/>
  <!-- materials for visualization -->
  <material name="Orange">
    <color rgba="1.0 0.4 0.0 1.0"/>
  <material name="Grey">
    <color rgba="0.7 0.7 0.7 1.0"/>
  <material name="DarkGrey">
    <color rgba="0.3 0.3 0.3 1.0"/>
  <material name="White">
    <color rgba="1.0 1.0 1.0 1.0"/>
  <material name="Black">
    <color rgba="0.0 0.0 0.0 1.0"/>
  <material name="Red">
    <color rgba="1.0 0.0 0.0 1.0"/>
  <material name="Green">
    <color rgba="0.0 1.0 0.0 1.0"/>
  <!-- Now we can start using the macros included above to define the actual youbot -->
  <!-- The first use of a macro.  This one was defined in base.urdf.xacro above.
       A macro like this will expand to a set of link and joint definitions, and to additional
       Gazebo-related extensions (sensor plugins, etc).  The macro takes an argument, name, 
       that equals "base", and uses it to generate names for its component links and joints 
       (e.g., base_link).  The included origin block is also an argument to the macro.  By convention, 
       the origin block defines where the component is w.r.t its parent ...
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answered 2013-09-23 09:30:51 -0500

nkoenig gravatar image

The xml used inside your <gazebo> elements are from pre-gazebo 1.0 days. They are no longer supported. You'll have to switch over to using SDF inside your <gazebo> elements.

SDF Specification YouBot in SDF

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What about the controller:gazeborospowermonitor and the gazeboroscontrollermanager? Those seem not to present in the sdf anymore. The last one is replaced by the gazeboroscontrol I think but the power monitor?

Davinci gravatar imageDavinci ( 2013-09-24 10:39:30 -0500 )edit

Ahh, ok so now the issue is located. Thank you. I have update and deleted ad now it actually works. Only issue is that my .dea files apparently not are valid anymore. When i use all the "*_convex.dea" files i can see the robot, but it is not as expected. I'll post a new question about this.

Rasmus gravatar imageRasmus ( 2013-09-24 11:01:14 -0500 )edit

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Asked: 2013-09-23 07:19:43 -0500

Seen: 3,638 times

Last updated: Sep 23 '13