Feedback Control Unit4

Course Support Robot Dynamics and Control
1

Hello!
I am facing error in topic 4.4 Simulation of the Robot-Controller System in Gazebo of unit 4. The program analyze_data.py is showing error, file and error image are attached

analyze_data
analyze_data1600×900 248 KB

ploterror
ploterror1600×900 306 KB

Thanks

2

Hello @misbahsuhail123 ,

Please try running the script directly with Python, like this:

python analyze_data.py

You might also check that you’ve properly generated the data.bag file and that it is in the expected path: '/home/user/catkin_ws/src/data.bag'

Best,

3

Thanks alberto its working now, but still one thing that each time when i open this unit and run the file it asks for
sympy missing, i install it with pip install sympy, and it worked, cannot be any permanent solution for it? I am sending you the images, pls have a look.

sympy-installed
sympy-installed1600×900 272 KB

sympy
sympy1600×900 339 KB

Thanks for ur help

4

Hello @misbahsuhail123 ,

Yes, for now, it’s necessary to install it each time you open the course. We are going to look into a solution to have it permanently installed. Thanks for the feedback.

5

Thank you Alberto for quick reply.