quadruped_ros2_control/descriptions/xiaomi/cyberdog_description/xacro/gazebo.xacro

<?xml version="1.0"?>
<robot xmlns:xacro="http://www.ros.org/wiki/xacro">

  <ros2_control name="GazeboSystem" type="system">
    <hardware>
      <plugin>gz_ros2_control/GazeboSimSystem</plugin>
    </hardware>

    <joint name="FR_hip_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="FR_thigh_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="FR_calf_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="FL_hip_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="FL_thigh_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="FL_calf_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="RR_hip_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="RR_thigh_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="RR_calf_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="RL_hip_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="RL_thigh_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <joint name="RL_calf_joint">
      <command_interface name="effort" initial_value="0.0"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>

    <sensor name="imu_sensor">
      <state_interface name="orientation.x"/>
      <state_interface name="orientation.y"/>
      <state_interface name="orientation.z"/>
      <state_interface name="orientation.w"/>
      <state_interface name="angular_velocity.x"/>
      <state_interface name="angular_velocity.y"/>
      <state_interface name="angular_velocity.z"/>
      <state_interface name="linear_acceleration.x"/>
      <state_interface name="linear_acceleration.y"/>
      <state_interface name="linear_acceleration.z"/>
    </sensor>

    <sensor name="LF_foot_end">
      <state_interface name="force.x"/>
      <state_interface name="force.y"/>
      <state_interface name="force.z"/>
      <param name="frame_id">LF_FOOT</param>
    </sensor>
    <sensor name="RF_foot_end">
      <state_interface name="force.x"/>
      <state_interface name="force.y"/>
      <state_interface name="force.z"/>
      <param name="frame_id">RF_FOOT</param>
    </sensor>
    <sensor name="LH_foot_end">
      <state_interface name="force.x"/>
      <state_interface name="force.y"/>
      <state_interface name="force.z"/>
      <param name="frame_id">LH_FOOT</param>
    </sensor>
    <sensor name="RH_foot_end">
      <state_interface name="force.x"/>
      <state_interface name="force.y"/>
      <state_interface name="force.z"/>
      <param name="frame_id">LH_FOOT</param>
    </sensor>
  </ros2_control>

  <!-- Gazebo's ros2_control plugin  -->
  <gazebo>
    <plugin filename="gz_ros2_control-system" name="gz_ros2_control::GazeboSimROS2ControlPlugin">
      <parameters>$(find cyberdog_description)/config/gazebo.yaml</parameters>
    </plugin>
    <plugin filename="gz-sim-imu-system"
            name="gz::sim::systems::Imu">
    </plugin>
    <plugin filename="gz-sim-contact-system"
            name="gz::sim::systems::Contact">
    </plugin>
    <plugin filename="gz-sim-forcetorque-system"
            name="gz::sim::systems::ForceTorque">
    </plugin>
  </gazebo>

  <gazebo reference="imu_link">
    <sensor name="imu_sensor" type="imu">
      <always_on>1</always_on>
      <update_rate>500</update_rate>
      <visualize>true</visualize>
      <topic>imu</topic>
      <imu>
        <angular_velocity>
          <x>
            <noise type="gaussian">
              <mean>0.0</mean>
              <stddev>2e-4</stddev>
              <bias_mean>0.0000075</bias_mean>
              <bias_stddev>0.0000008</bias_stddev>
            </noise>
          </x>
          <y>
            <noise type="gaussian">
              <mean>0.0</mean>
              <stddev>2e-4</stddev>
              <bias_mean>0.0000075</bias_mean>
              <bias_stddev>0.0000008</bias_stddev>
            </noise>
          </y>
          <z>
            <noise type="gaussian">
              <mean>0.0</mean>
              <stddev>2e-4</stddev>
              <bias_mean>0.0000075</bias_mean>
              <bias_stddev>0.0000008</bias_stddev>
            </noise>
          </z>
        </angular_velocity>
        <linear_acceleration>
          <x>
            <noise type="gaussian">
              <mean>0.0</mean>
              <stddev>1.7e-2</stddev>
              <bias_mean>0.1</bias_mean>
              <bias_stddev>0.001</bias_stddev>
            </noise>
          </x>
          <y>
            <noise type="gaussian">
              <mean>0.0</mean>
              <stddev>1.7e-2</stddev>
              <bias_mean>0.1</bias_mean>
              <bias_stddev>0.001</bias_stddev>
            </noise>
          </y>
          <z>
            <noise type="gaussian">
              <mean>0.0</mean>
              <stddev>1.7e-2</stddev>
              <bias_mean>0.1</bias_mean>
              <bias_stddev>0.001</bias_stddev>
            </noise>
          </z>
        </linear_acceleration>
      </imu>
    </sensor>
  </gazebo>
  <gazebo reference="imu_joint">
    <disableFixedJointLumping>true</disableFixedJointLumping>
  </gazebo>

</robot>