Discrete-Time PID Controller
Snapshot of the front panel of the simulator:
Typically, commercial PID controllers of today are implemented as an algorithm running on a computer. The PID algorithm is executed once per time step (sampling interval), Ts. A typical value of Ts is 0.1 sec. The tasks below deomonstrates effects of the discrete-time nature of such computer implemented controllers.
Assuming the following parametrers of the process to be controlled (these values are default values of the simulator): Ku=1, Kv=1, T1=2, T2=1, tau=0.5. Controller tuning using the Ziegler-Nichols' ultimate gain tuning method yields
Kp=3.6, Ti=2.0 og Td=0.5
You can apply the above parameter values in the following task.
Start the simulator.