IIR Filter Design
The app shows the controller response of individual systems to the step function. Among them are the P, PI, PD, PID, PT1, PT2, D, IT1, PDT1, PIT1, DT1 and PIDT1 system. The coefficients a(i) and b(i) depend on the sampling rate of the input data. They are mapped and made available in the app for a s