Longitudinal flight multi condition control using robust PID controllers

Abstract

A multi flight condition aircraft control autopilot system is proposed to control the horizontal flight of an aircraft involving atmospheric gusts. The control system involves a robust PID controller that stabilizes the closed loop system for various flight conditions. Considering the stability derivatives of the aircraft and the velocity of the aircraft to be uncertain parameters the robust stabilizing and disturbance attenuation controller is designed to cover full envelop pitch control. The robust PID controller parameters are computed using a finite step algorithm based on a Hurwitz invariability technique. Solvability conditions are derived. Simulation results for four different flight conditions are presented indicating the satisfactory performance of the robust controller in the presence of atmospheric gusts.

Detección de anormalidades en el control de estabilidad de una aeronave

“…En la literatura se encuentran reportados trabajos en control de posicionamiento de aeronaves empleando diversos controladores como PID, MRAC, fuzzy, adaptativos predictivos, LQR, redes neuronales y H∞, entre otros. En [3] se simula el desempeño de un controlador PID robusto usando el algoritmo de un paso para controlar la estabilidad de una aeronave en un sistema de piloto automático. La simulación presenta un desempeño satisfactorio para condiciones de vuelo cambiantes y teniendo en cuenta la presencia de ráfagas atmosféricas.…”

“…Ángulo de deflexión timón de profundidad , dependen entre otros factores de los coeficientes que relacionan los cambios en la sustentación, producidos por el downwash en cola, por perturbaciones en la aceleración ̇.El modelo descrito incluye en su orden las siguientes variables de estado:Para el modelo de la aeronave objeto de estudio, la representación en el espacio de estado está dada por la ecuación(2) [18]. Modelo latero-dimensional Su representación está dada por la ecuación(3) …”

ASIC implementation of fuzzy-PID controller for aircraft roll control

“…The MA V control system has to therefore be fast, flexible and robust in order to achieve proper platform stabilization and guidance. Several control strategies have been proposed in the literature, such as PID [2] [3], fuzzy logic [4] [5], sliding mode control [6] [7], neural networks [S] [9], linear quadratic regulator [4] [5], model predictive control [10] [11] etc. with each strategy having its own merits and demerits.…”

Controller design for flying boats taking off from water with regular waves

“…As to flight control, there are three important basic requirements: guaranteeing stability for different flying conditions, holding airplanes to desired states and tracking desired flying trajectories. In order to improve the performances of different airplanes, researchers have been proposing lots of flight control methods: such as gain scheduling methods based on classic PID controllers [3], adaptive control methods [4], nonlinear control methods [6], robust control methods [6], optimal control methods [7], * This work is supported by National Natural Science Foundation of China (No. 60904006) and Science Foundation of Chinese Academy of Sciences (CXJJ-11-M10).…”