Search found 7926 matches

by coppelia
19 Jun 2020, 06:26
Forum: General questions
Topic: b0RemoteApi - Python - simxLoadModelFromFile failed
Replies: 1
Views: 107

Re: b0RemoteApi - Python - simxLoadModelFromFile failed

Hello, the error messages are very confusing... when attempting to call the LoadModelFromFile function, it outputs apparently an error message related to AddStatusbarMessage... Can you maybe add some print statements like in following functions, in the lua/b0RemoteApiServer.lua file? function AddSta...
by coppelia
19 Jun 2020, 06:13
Forum: General questions
Topic: Franka Emika Panda stability for ik with Bullet 2.83
Replies: 2
Views: 150

Re: Franka Emika Panda stability for ik with Bullet 2.83

Hello, if the shaking appeared after switching to another engine, then you have the reason for it. Try to check if the chaking also happens with some of the other engines. But it is most probably linked to some parameters/values that need to be adjusted: Try to adjust individual joint's maximum torq...
by coppelia
19 Jun 2020, 06:06
Forum: General questions
Topic: Path Planning Coppeliasim/V-rep
Replies: 1
Views: 136

Re: Path Planning Coppeliasim/V-rep

Hello, the built-in path/motion functionality is not supported anymore since quite some time. This is because it has been replaced by a much more flexible and powerful way, via the OMPL plugin for CoppeliaSim. So now you can create, handle and solve path planning tasks programmatically entirely. Che...
by coppelia
19 Jun 2020, 06:04
Forum: General questions
Topic: Robot don't follow the path at begin
Replies: 8
Views: 201

Re: Robot don't follow the path at begin

Hello, difficult to say with the little information you give. How is the robot controlled? Via IK? What is the chosen IK solver? Is it a damped one? Is the robot dynamically enabled? Are the joints in IK mode with hybrid operation? What happens if the gripper is removed? (you say that maybe it is ca...
by coppelia
19 Jun 2020, 05:55
Forum: General questions
Topic: How can I apply my trajectory on a robot to simulation?
Replies: 1
Views: 123

Re: How can I apply my trajectory on a robot to simulation?

Hello Jian, you have several ways to compute and also several ways to execute a trajectory. Now let's suppose you have computed a trajectory for your robot in the configuration space. The simplest would be go from current configuration to the target configuration. And the simplest with this scenario...
by coppelia
19 Jun 2020, 05:33
Forum: General questions
Topic: Understanding NAO walking control
Replies: 1
Views: 152

Re: Understanding NAO walking control

Hello, the NAO robot model is dynamically enabled and has all of its joints in force/torque mode, the motors are on and the control loop is also on: the joints operate in position control mode. The joint recorder model is actually another story: it is a model that you can attach to a dynamically ena...
by coppelia
19 Jun 2020, 05:23
Forum: General questions
Topic: Video recording output type from script
Replies: 1
Views: 143

Re: Video recording output type from script

Hello,

this is currently not possible. In next release (out next month) you will be able to do this via:

Code: Select all

sim.setInt32Parameter(sim.intparam_videoencoder_index,index)
Cheers
by coppelia
18 Jun 2020, 15:17
Forum: General questions
Topic: Energy Consumption of Joints
Replies: 1
Views: 105

Re: Energy Consumption of Joints

I think if you have the torque exerted by a joint (i.e. sim.getJointForce) and the angle it has moved, you can compute the energy it dissipated/accumulated. You'll have to accumulate the energy in each dynamics step, e.g. using a dynamics callback function.

Cheers
by coppelia
18 Jun 2020, 15:14
Forum: General questions
Topic: Set internal friction of joints
Replies: 5
Views: 2845

Re: Set internal friction of joints

I think if you have the torque exerted by a joint (i.e. sim.getJointForce) and the angle it has moved, you can compute the energy it dissipated/accumulated.

Cheers
by coppelia
15 Jun 2020, 08:00
Forum: Bug reports
Topic: B0 Remote API: destroyed all streaming functions for client after detection of inactivity
Replies: 1
Views: 82

Re: B0 Remote API: destroyed all streaming functions for client after detection of inactivity

Hello, what about setting a larger inactivityTolerance argument? Currently the value is set at 60 seconds, which means that if CoppeliaSim doesn't hear from the client within 60 seconds, it will stop streaming data. Alternatively, you could also send some dummy value to fake some activity, e.g. with...