Search found 5677 matches
- 02 Feb 2024, 13:40
- Forum: General questions
- Topic: Question about the physics of joints in simulations
- Replies: 2
- Views: 564
Re: Question about the physics of joints in simulations
Hello, we cannot see the video you posted. Keep in mind that a joint can be in kinematic or dynamic mode . And when in dynamic mode , it can be in one of following control mode : free , force , velocity , position , spring or custom . Most manipulator joints are in dynamic mode, and in position cont...
- 02 Feb 2024, 13:29
- Forum: General questions
- Topic: the black and red cylinders in some joints separate
- Replies: 1
- Views: 528
Re: the black and red cylinders in some joints separate
Hello, what you describe are joints breaking apart: with most physics engines, joints are modelled as constraints. If some constraints cannot be solved properly, joints will come apart. This is not the case with the MuJoCo engine for instance (except where there are loop closures). To remedy for joi...
- 02 Feb 2024, 13:03
- Forum: General questions
- Topic: The method of controlling the gripper action not to be executed together with the mechanical arm action
- Replies: 3
- Views: 958
Re: The method of controlling the gripper action not to be executed together with the mechanical arm action
Sorry, I am not sure I understand. If you are trying to move a dynamically enabled joint in a realistic fashion, you cannot use sim.setJointPosition, since motion would be instantaneous. You should use instead sim.setJointTargetPosition, and the joint will try to reach the desired position when in p...
- 02 Feb 2024, 12:51
- Forum: General questions
- Topic: Objects repel each other
- Replies: 3
- Views: 716
Re: Objects repel each other
Hello, what kind of shapes are you using to model your two parts? If you use non-convex shapes, this will never be good. You should design your two parts as a compound of primitive shapes (best), or as a compound of convex shapes (not bad either). The problem when using random non-convex meshes is t...
- 02 Feb 2024, 12:45
- Forum: General questions
- Topic: Error in child script
- Replies: 6
- Views: 766
Re: Error in child script
When using Python, I highly recommend using CoppeliaSim V4.6 and later. And for easier pick-and-place motions, you might want to wait for release 4.7 (within 1-2 months), which will feature actions.
Cheers
Cheers
- 02 Feb 2024, 12:43
- Forum: General questions
- Topic: torque control with pid
- Replies: 4
- Views: 674
Re: torque control with pid
Those values have now moved to the engine properties (via the engine properties button): each engine has its own set of PID values.
Cheers
Cheers
- 02 Feb 2024, 12:34
- Forum: General questions
- Topic: cannot access local variable
- Replies: 1
- Views: 568
Re: cannot access local variable
Hello, when writing code within CoppeliaSim, you need to follow the suggested script structure when attaching a new script to an object. For Python, this is typically: non-threaded: #python def sysCall_init(): sim = require('sim') # do some initialization here # # Instead of using globals, you can d...
- 30 Jan 2024, 20:29
- Forum: General questions
- Topic: trying to draw a circle but it is not working
- Replies: 2
- Views: 547
Re: trying to draw a circle but it is not working
There are several things that are not the same. But the most important is that in the initial configuration, the first joint is at 120 degrees in the first scene, but at 30 degrees in the second scene.
Cheers
Cheers
- 30 Jan 2024, 20:17
- Forum: General questions
- Topic: torque control with pid
- Replies: 4
- Views: 674
Re: torque control with pid
İ don't wanna make a custom controller setup like use position control mode when bla bla and switch to force mode when bla bla. I just wanna use it in Force mode all the time. Have a look at the demo scene scenes/motorControllerExamples-lua.ttt , the yellow joint. The joint needs to be in Dynamic m...
- 30 Jan 2024, 20:10
- Forum: General questions
- Topic: Bug while using python coppeliasim_zmqremoteapi_client library
- Replies: 2
- Views: 529
Re: Bug while using python coppeliasim_zmqremoteapi_client library
What version and what revision of coppeliaSim are you running? If not the latest, try to upgrade to the latest.
Also, once you have the latest version, make sure to upgrade the pip package too, e.g.:
Cheers
Also, once you have the latest version, make sure to upgrade the pip package too, e.g.:
Code: Select all
pip install --upgrade coppeliasim_zmqremoteapi_client