VERIFYING CONTROL SYSTEM STABILITY
• Introduce random errors to the system model and test for stability
• Use the Nyquist Stability Theorem,
21.8.1 Stability
• The stability function is defined using the Nyquist plot.
21.8.2 Bounded Gain
• In practical terms system gain is limited by real components. As a result it is important to ensure that the design will not exceed the maximum values available.