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Added tutorial for Automatic Inertia Calculator #2119

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merged 17 commits into from
Sep 20, 2023
Merged

Added tutorial for Automatic Inertia Calculator #2119

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c28afc7
Added empty tutorial file
jasmeet0915 Sep 4, 2023
594ee52
Update and rename auto_inertia.md to auto_inertia_calculation.md
jasmeet0915 Sep 4, 2023
102a22d
Added example world with pendulum demo
jasmeet0915 Sep 5, 2023
37b63a7
Added demo .gifs
jasmeet0915 Sep 5, 2023
c10c05f
Added auto inertia rolling shapes demo
jasmeet0915 Sep 5, 2023
44a6b54
Updated auto_inertia.md tutorial
jasmeet0915 Sep 5, 2023
0386738
Update tutorials.md.in to include auto_inertia page
jasmeet0915 Sep 5, 2023
35df259
Reduced number of characters in one line
jasmeet0915 Sep 5, 2023
8ed75d7
Update auto_inertia_rolling_shapes.sdf example to use auto inertial i…
jasmeet0915 Sep 5, 2023
bdf80ba
Added newline at end of file
jasmeet0915 Sep 6, 2023
8fc7634
Trimmed trailing whitespaces
jasmeet0915 Sep 6, 2023
2b8be4c
Minor rephrasing and formatting changes
jasmeet0915 Sep 13, 2023
07bd6cd
Corrected density tag
jasmeet0915 Sep 14, 2023
6217798
Corrected formatting, update documentation
jasmeet0915 Sep 14, 2023
822f1c0
Trimmed trailing whitespaces
jasmeet0915 Sep 18, 2023
52ffa22
Corrected auto_inertia_rolling_shapes world name
jasmeet0915 Sep 19, 2023
1f74cb9
Documented the limitation of using meshes having submeshes with autom…
jasmeet0915 Sep 20, 2023
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367 changes: 367 additions & 0 deletions examples/worlds/auto_inertia_pendulum.sdf
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<?xml version="1.0" ?>
<!--

Demo of Automatic Inertia Calculations using a pendulum setup

-->
<sdf version="1.11">
<world name="auto_inertia_pendulum">
<physics name="1ms" type="ignored">
<max_step_size>0.001</max_step_size>
<real_time_factor>1.0</real_time_factor>
</physics>
<plugin
filename="gz-sim-physics-system"
name="gz::sim::systems::Physics">
</plugin>
<plugin
filename="gz-sim-user-commands-system"
name="gz::sim::systems::UserCommands">
</plugin>
<plugin
filename="gz-sim-scene-broadcaster-system"
name="gz::sim::systems::SceneBroadcaster">
</plugin>

<light type="directional" name="sun">
<cast_shadows>true</cast_shadows>
<pose>0 0 10 0 0 0</pose>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.2 0.2 0.2 1</specular>
<attenuation>
<range>1000</range>
<constant>0.9</constant>
<linear>0.01</linear>
<quadratic>0.001</quadratic>
</attenuation>
<direction>-0.5 0.1 -0.9</direction>
</light>

<model name="ground_plane">
<static>true</static>
<link name="link">
<collision name="collision">
<geometry>
<plane>
<normal>0 0 1</normal>
<size>100 100</size>
</plane>
</geometry>
</collision>
<visual name="visual">
<geometry>
<plane>
<normal>0 0 1</normal>
<size>100 100</size>
</plane>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
</link>
</model>

<model name="pendulum">
<link name="base">
<inertial>
<pose>-0.188749 0 0.75813399999999997 -0.13567899999999999 0 1.5708</pose>
<mass>256.42500000000001</mass>
<inertia>
<ixx>154.202</ixx>
<ixy>0</ixy>
<ixz>0</ixz>
<iyy>152.286</iyy>
<iyz>0</iyz>
<izz>28.8249</izz>
</inertia>
</inertial>
<visual name="vis_plate_on_ground">
<pose>0 0 0.01 0 0 0</pose>
<geometry>
<cylinder>
<radius>0.8</radius>
<length>0.02</length>
</cylinder>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<visual name="vis_pole">
<pose>-0.275 0 1.1 0 0 0</pose>
<geometry>
<box>
<size>0.2 0.2 2.2</size>
</box>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<collision name="col_plate_on_ground">
<pose>0 0 0.01 0 0 0</pose>
<geometry>
<cylinder>
<radius>0.8</radius>
<length>0.02</length>
</cylinder>
</geometry>
</collision>
<collision name="col_pole">
<pose>-0.275 0 1.1 0 0 0</pose>
<geometry>
<box>
<size>0.2 0.2 2.2</size>
</box>
</geometry>
</collision>
</link>

<!-- upper link, length 1, IC -90 degrees -->
<link name="upper_link">
<pose>0 0 2.1 -1.5708 0 0</pose>
<self_collide>0</self_collide>
<inertial auto="true" />
<visual name="vis_upper_joint">
<pose>-0.05 0 0 0 1.5708 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.3</length>
</cylinder>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<visual name="vis_bob">
<pose>0 0 1.0 0 1.5708 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.2</length>
</cylinder>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<visual name="vis_cylinder">
<pose>0 0 0.5 0 0 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.9</length>
</cylinder>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<collision name="col_upper_joint">
<density>8000</density>
<pose>-0.05 0 0 0 1.5708 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.3</length>
</cylinder>
</geometry>
</collision>
<collision name="col_bob">
<density>1000</density>
<pose>0 0 1.0 0 1.5708 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.3</length>
</cylinder>
</geometry>
</collision>
<collision name="col_cylinder">
<density>1000</density>
<pose>0 0 0.5 0 0 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.9</length>
</cylinder>
</geometry>
</collision>
</link>

<!-- pin joint for upper link, at origin of upper link -->
<joint name="upper_joint" type="revolute">
<parent>base</parent>
<child>upper_link</child>
<axis>
<xyz>1.0 0 0</xyz>
</axis>
</joint>
</model>

<model name="pendulum2">
<pose>0 3 0 0 0 0</pose>
<link name="base">
<inertial>
<pose>-0.188749 0 0.75813399999999997 -0.13567899999999999 0 1.5708</pose>
<mass>256.42500000000001</mass>
<inertia>
<ixx>154.202</ixx>
<ixy>0</ixy>
<ixz>0</ixz>
<iyy>152.286</iyy>
<iyz>0</iyz>
<izz>28.8249</izz>
</inertia>
</inertial>
<visual name="vis_plate_on_ground">
<pose>0 0 0.01 0 0 0</pose>
<geometry>
<cylinder>
<radius>0.8</radius>
<length>0.02</length>
</cylinder>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<visual name="vis_pole">
<pose>-0.275 0 1.1 0 0 0</pose>
<geometry>
<box>
<size>0.2 0.2 2.2</size>
</box>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<collision name="col_plate_on_ground">
<pose>0 0 0.01 0 0 0</pose>
<geometry>
<cylinder>
<radius>0.8</radius>
<length>0.02</length>
</cylinder>
</geometry>
</collision>
<collision name="col_pole">
<pose>-0.275 0 1.1 0 0 0</pose>
<geometry>
<box>
<size>0.2 0.2 2.2</size>
</box>
</geometry>
</collision>
</link>

<!-- upper link, length 1, IC -90 degrees -->
<link name="upper_link">
<pose>0 0 2.1 -1.5708 0 0</pose>
<self_collide>0</self_collide>
<inertial auto="true" />
<visual name="vis_upper_joint">
<pose>-0.05 0 0 0 1.5708 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.3</length>
</cylinder>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<visual name="vis_bob">
<pose>0 0 1.0 0 1.5708 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.2</length>
</cylinder>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<visual name="vis_cylinder">
<pose>0 0 0.5 0 0 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.9</length>
</cylinder>
</geometry>
<material>
<ambient>0.8 0.8 0.8 1</ambient>
<diffuse>0.8 0.8 0.8 1</diffuse>
<specular>0.8 0.8 0.8 1</specular>
</material>
</visual>
<collision name="col_upper_joint">
<density>100</density>
<pose>-0.05 0 0 0 1.5708 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.3</length>
</cylinder>
</geometry>
</collision>
<collision name="col_bob">
<density>10000</density>
<pose>0 0 1.0 0 1.5708 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.3</length>
</cylinder>
</geometry>
</collision>
<collision name="col_cylinder">
<density>100</density>
<pose>0 0 0.5 0 0 0</pose>
<geometry>
<cylinder>
<radius>0.1</radius>
<length>0.9</length>
</cylinder>
</geometry>
</collision>
</link>

<!-- pin joint for upper link, at origin of upper link -->
<joint name="upper_joint" type="revolute">
<parent>base</parent>
<child>upper_link</child>
<axis>
<xyz>1.0 0 0</xyz>
</axis>
</joint>
</model>

</world>
</sdf>
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