Pisa is a toolbox for closed-loop stability analysis. It determines whether the impedance presented by the circuit has poles in the complex right half-plane to determine whether the circuit is stable.
The Pisa approach to stability consists of three steps:
- Determine the impedance presented by the circuit (see Closed-loop stability analysis)
- Project onto a basis for stable and unstable functions to determine stability.
- Estimate the location of the unstable poles when the circuit is unstable.
The details for each step are explained on their separate page.