Asynchronously finite-time H_∞ control for morphing aircraft

Abstract

This paper investigates the problem of asynchronously finite-time H∞ control for morphing aircraft with controller uncertainties. Based on the switched linear parameter-varying model of morphing aircraft, the inherent packet dropouts of system are taken into consideration, which will lead to asynchronous switching. The asynchronous switching means that the switching of controllers will lag behind the switching of corresponding subsystem. Moreover, in order to overcome the undesirable influence of controller uncertainties and guarantee that the corresponding closed-loop system is finite-time bounded with a specified H∞ performance index, the non-fragile finite-time H∞ controller is developed via asynchronously switched control. For the purpose of less conservative controller design, the finite-time robust stability analysis of the system is verified by combining mode-dependent average dwell time method and multiple Lyapunov functional method. The sufficient existing conditions and solutions of the controllers are found by solving a series of linear matrix inequalities. Finally, the method proposed in this paper is demonstrated by an illustrative numerical example.

Integrated Fault Detection and Fault Tolerant Control for Switched Systems with Asynchronous Switching

“…Definition 1 (see [26]) (finite-time stability, FTS). For given matrix R > 0, we have positive constants c 1 , c 2 , and N f with c 1 < c 2 and switching signal σ(k).…”

“…; then we can obtain equation (32). Similarly, one can obtain equation 33by making a congruence transformation to equation (26).…”

“…□ Remark 1. Compared to [26], the integrated fault detection and control are investigated. Because the fault detection filter and controller will influence each other, the method proposed in this article will overcome the undesirable response caused by the separated design of fault detection filter and controller, which can ensure optimal performance and avoid designing trial and error.…”

“…e Lyapunov asymptotic stability cannot ensure the desired performance, which introduces the study on finite-time stability. In [26], the problem of H ∞ controller design for morphing aircraft with asynchronous switching is studied. e finite-time stability is analyzed by the aid of MDADT method and Lyapunov functional method.…”

Switched H2-state-feedback control with application to a fighter aircraft

“…To cite a few: Allerhand and Shaked (2013-2) applied a switched control technique to control the short-period mode of a F4E fighter aircraft. Cheng et al (2018) proposes an asynchronous switching technique that enables switching with lag. Finite-time sliding mode and super-twisting control for fighter aircraft control are used in Raj et al (2018).…”