Hidden attractors in aircraft control systems with saturated inputs

TL;DR

This paper investigates the presence of hidden oscillations in aircraft control systems with input limitations, demonstrating their existence through examples involving pilot-induced oscillations and airfoil flutter suppression.

Contribution

It reveals the existence of hidden attractors in aircraft control systems with saturated inputs, highlighting their impact on system stability and control.

Findings

Hidden oscillations can occur in systems with input saturation.

Examples include pilot-induced oscillations and airfoil flutter suppression.

Hidden attractors affect control system stability.

Abstract

In the paper, the control problem with limitations on the magnitude and rate of the control action in aircraft control systems, is studied. Existence of hidden oscillations in the case of actuator position and rate limitations is demonstrated by the examples of piloted aircraft pilot involved oscillations (PIO) phenomenon and the airfoil flutter suppression system.