Research on the Robustness of an Adaptive PID Control of a Kind of Supersonic Missile

Gangling Jiao,Yuqiang Jin,Shixing Wang

doi:10.19026/rjaset.5.5081

Gangling Jiao, Yuqiang Jin + Show 1 more

Open Access

https://doi.org/10.19026/rjaset.5.5081

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Abstract

In this study, the dynamic characteristic of missile system is viewed as a two-loop system, such as inner loop and outer loop and we design an adaptive PID control strategy for the pitch channel linear model of supersonic missile. The robustness of a double PID controller is analyzed by changing the aerodynamic coefficients. The control law is testified to be stable even the aerodynamic coefficients are changed between 0.7 and 1.7 times of its standard value and the control effect is compared with the sliding mode control strategy. Also the advantage and defect of both control strategy are summarized at the end of this study.

Highlights

Robustness is one of most important characteristics of a controller designed for high speed air-vehicles
It demands a controller to be stable in the situation of standard aerodynamic coefficients, and the controller should have good performance if the real aerodynamic coefficients are largely different from the standard value (Gao and James, 1993; Polycarpou and Ioannou, 1996; Seung-Hwan et al, 2004; Tang and Ling, 2005; Elabbasy et al, 2006; Qian and Yanan, 2000; Tian-Bo, 2010)
It is not easy to analyze the robustness of a real controller applied in aircrafts since there is not enough theory available to analyze even the stability of a complex nonlinear system (Johansson and Wanhammar, 1999; Patil et al, 2008; Fujita et al, 1998)

Summary

INTRODUCTION

Robustness is one of most important characteristics of a controller designed for high speed air-vehicles. It demands a controller to be stable in the situation of standard aerodynamic coefficients, and the controller should have good performance if the real aerodynamic coefficients are largely different from the standard value (Gao and James, 1993; Polycarpou and Ioannou, 1996; Seung-Hwan et al, 2004; Tang and Ling, 2005; Elabbasy et al, 2006; Qian and Yanan, 2000; Tian-Bo, 2010) It really happens when an air-vehicle is flying in bad air conditions or the weather is totally different from the designers assumed. The robustness of a double PID controller is analyzed by changing the aerodynamic coefficients

PROBLEM DESCRIPTION

ROBUSTNESS OF CONTROLLER

CONCLUSION