PacktPublishing / ROS-Robotics-Projects-SecondEdition

ROS Robotics Projects, published by Packt
MIT License
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I would like to know how to precisely get the Inertia Matrix value in chapter3 #4 #5

Open doanvanthong opened 3 years ago

doanvanthong commented 3 years ago

Opened mesh /home/vanthong/chapter3_ws/src/robot_description/meshes/robot_base.stl in 59 msec All files opened in 2158 msec Mesh Bounding Box Size 0.650000 0.200000 0.400000 Mesh Bounding Box Diag 0.788987 Mesh Bounding Box min -0.325000 -0.050000 -0.200000 Mesh Bounding Box max 0.325000 0.150000 0.200000 Mesh Surface Area is 0.929249 Mesh Total Len of 454 Edges is 72.690445 Avg Len 0.160111 Mesh Total Len of 454 Edges is 72.690445 Avg Len 0.160111 (including faux edges)) Thin shell (faces) barycenter: -0.012075 0.055283 0.000000 Vertices barycenter -0.077065 0.042229 -0.000000 Mesh is not 'watertight', no information on volume, barycenter and inertia tensor. Principal axes are : | 0.109390 -0.000000 0.993999 | | 0.993999 0.000000 -0.109390 | | 0.000000 -1.000000 -0.000000 |

i open .stl file erro , i dont no how in book can calculator ixx,ixy,ixz... and more