A Non-Quadratic Criterion for Stability of Forced Oscillations and Its Application to Flight Control
Authors: Andrievsky B, Pogromsky A., Matveev A., Leonov G., Kuznetsov N.
A new test for stability of forced oscillations in nonlinear systems is applied to a marginally stable plant of the second order with a saturated PID-control and a harmonic reference signal. The range of its frequencies and amplitudes that guarantee stability of the forced oscillations is found. This result is used for stability analysis of an aircraft roll angle control system.