PID Controller - ECP Rectilinear Model 210

[so1id]

Hi, everyone! I am working on a PID controller for a one-cart system (ECP Model 210) in LabView. However, I don't think I am using the PID vi correctly. I am trying to have the position of the cart changed by the setpoint in the PID but the system just oscillates. If anyone can offer some advice, I would greatly appreciate it.

Thanks!

 

[so1id]

The model is like this:

I'm trying to use a PID controller to move the cart at a specific position (say +2.5 cm) and then stay there/go back after manually displacing. 

Can anyone help?

[Joel-I · Accepted solution]

Hi so1id,

Check your gains, it could be that you have your P gain set too high

Regards,