Search found 8 matches

by louxibai
04 Oct 2019, 17:50
Forum: General questions
Topic: How to properly import urdf file
Replies: 4
Views: 504

Re: How to properly import urdf file

Thanks for replying, This is a screenshot of my scene, the left panda gripper is what the dae file looks like, and the one on the ground is imported from urdf, the appearance is the same as its stl collision file. It looks like the urdf plugin simplifies the visual appearance when importing it(or mi...
by louxibai
03 Oct 2019, 23:13
Forum: General questions
Topic: How to properly import urdf file
Replies: 4
Views: 504

How to properly import urdf file

Hi, I converted a xacro file to urdf and import it into VREP, the original xacro file is for a franka emika panda robot arm, it looks good in moveit, but when loaded into VREP, the appearance is different, it seems like VREP only loaded the stl files, but the visual dae files are igonred. Could you ...
by louxibai
11 Apr 2019, 23:25
Forum: General questions
Topic: Motion planning RRTConnect: Unable to sample any valid states for goal tree
Replies: 1
Views: 975

Motion planning RRTConnect: Unable to sample any valid states for goal tree

Hi, I'm grasping on object from ground, the motion planning returns those error messages in terminal: Error: RRTConnect: Unable to sample any valid states for goal tree at line 253 in /home/marc/Documents/ompl-1.4.2-Source/src/ompl/geometric/planners/rrt/src/RRTConnect.cpp Info: RRTConnect: Created ...
by louxibai
25 Mar 2019, 18:34
Forum: General questions
Topic: CHILD SCRIPT xxx: abort execution
Replies: 1
Views: 654

CHILD SCRIPT xxx: abort execution

Hi Coppelia, I have a threaded script attached to a robot arm that does motion planning for grasping an object. When the grasping pose doesn't make sense I understand it is not able to find the path, but it looks like after the "CHILD SCRIPT xxx: abort execution " message appear, it doesn't abort th...
by louxibai
11 Feb 2019, 19:24
Forum: General questions
Topic: gripper finger force not balanced
Replies: 1
Views: 619

gripper finger force not balanced

Hi, I build a Franka Emika panda in VREP for simulating object grasping, the original gripper fingers from their CAD file are not the same as the real ones, so I replaced them with a different finger, but when it grasps the Cuboid and lifts it, the two fingers keep oscillating, it is hard to describ...
by louxibai
03 Dec 2018, 00:03
Forum: General questions
Topic: Difference between calculated rotation matrix and getObjectMatrix returns
Replies: 1
Views: 769

Difference between calculated rotation matrix and getObjectMatrix returns

Hello, I have a question about the conventions used in getObjectMatrix. I set a dummy to a target orientation by forming a rotation matrix(because I have the target x', y' and z' vectors), and calculate Euler angles from it, the rotation matrix is: [[ 0.65097799 0.57668171 -0.49362523] [ 0.31322249 ...
by louxibai
19 Nov 2018, 19:29
Forum: General questions
Topic: Object slipping down while being lifted
Replies: 2
Views: 1457

Re: Object slipping down while being lifted

Thank you very much for the suggestion, I switch to the RG2 gripper and everything works fine now.
by louxibai
18 Nov 2018, 21:28
Forum: General questions
Topic: Object slipping down while being lifted
Replies: 2
Views: 1457

Object slipping down while being lifted

Hello, I'm fairly new to VREP, I'm trying to grasp an object with a Kuka robot and ROBOTIQ-85, but the object being grasped always slipping down, I tried to adjust object mass and texture but had no success. Could you please give me some advice? The scene is here: https://www.dropbox.com/s/h2g63rz1a...