Search found 4 matches

by paperstiger
Tue Jul 02, 2019 2:46 am
Forum: PyBullet Support and Feedback
Topic: What accuracy to expect for trajectory tracking using position control
Replies: 6
Views: 8603

Re: What accuracy to expect for trajectory tracking using position control

steven wrote: Mon Jul 01, 2019 12:47 pm in the second case, the robot collides with the ground which will impact the links and joints of the robot.
Wait, really? I should have used the software with GUI turned on.
by paperstiger
Sun Jun 30, 2019 4:38 pm
Forum: PyBullet Support and Feedback
Topic: What accuracy to expect for trajectory tracking using position control
Replies: 6
Views: 8603

Re: What accuracy to expect for trajectory tracking using position control

thanks for your sharing. why did you said "maximum of 0.01 for some joint"? i add the following to print the max delta, the value is about 0.006. how much tracking accuracy do you need? the accuracy is very high if don't care about the velocity. print("max value=", np.max(robotl...
by paperstiger
Fri Jun 28, 2019 3:41 pm
Forum: PyBullet Support and Feedback
Topic: What accuracy to expect for trajectory tracking using position control
Replies: 6
Views: 8603

Re: What accuracy to expect for trajectory tracking using position control

steven wrote: Fri Jun 28, 2019 1:39 am Could you provide a complete simple test? i can work with you to find the root cause.
Here you go. I am sharing a minimum test case and you can download it from here.

https://drive.google.com/file/d/1W6iPNO ... sp=sharing

Thank you for your time.
by paperstiger
Thu Jun 27, 2019 9:05 pm
Forum: PyBullet Support and Feedback
Topic: What accuracy to expect for trajectory tracking using position control
Replies: 6
Views: 8603

What accuracy to expect for trajectory tracking using position control

Hi all, I am using pybullet to simulate ur5 robot. I have a trajectory (time stamped joint configuration and velocity) that I want to track. What my code does is basically for i in range(self.eeId - 1): p.setJointMotorControl2(self.robotId, i + 1, p.POSITION_CONTROL, target_p[i], target_v[i], positi...