Adaptive Backstepping Sliding Mode Control for Roll Channel of Launch Vehicle

Arun Kumar Vv, ,Laila Beebi M

doi:10.19070/2470-4415-150007

Abstract

This paper presents a comparative study of Backstepping Control, Adaptive Backstepping Control and Adaptive Backstep- ping Sliding Mode Control on Roll channel of Launch vehicle. Backstepping Control design involves a systematic construc- tion of both feedback control laws and associated Lyapunov functions. The Backstepping design methodology fails in the presence of parameter uncertainties. With Adaptive Backstepping, stabilization is achieved in the presence of unknown parameters. Robustness of Adaptive Backstepping Control can be increased by designing a sliding surface to the associ- ated Lyapunov function. Thus Adaptive Backstepping Sliding Mode Control combines the advantages of both Adaptive Backstepping and Sliding Mode. The comparison of the proposed control schemes is verified by the MATLAB simulation. From the simulation results it is clear that Adaptive Backstepping Sliding Mode Control Scheme gives better and satisfac- tory responses.

Highlights

LAUNCH vehicles are vehicles which are primarily used to carry payloads from the surface of earth to outer space
Expendable launch vehicles are designed for one-time use
In this paper Backstepping, Adaptive Backstepping and Adaptive Backstepping Sliding Mode Controls have been implemented on the roll channel to control the roll angle of the launch vehicle

Summary

Introduction

LAUNCH vehicles are vehicles which are primarily used to carry payloads from the surface of earth to outer space. Expendable launch vehicles are designed for one-time use. In Adaptive Backstepping Sliding Mode Control design [9], it involves a systematic construction of both feedback control laws and associated Lyapunov functions and the robustness of the controller is increased by incorporating a sliding surface in the parameter updation law. In this paper Backstepping, Adaptive Backstepping and Adaptive Backstepping Sliding Mode Controls have been implemented on the roll channel to control the roll angle of the launch vehicle. Arun Kumar V V, Laila Beebi M (2015) Adaptive Backstepping Sliding Mode Control for Roll Channel of Launch Vehicle. By varying the thruster angle launch vehicle direction in roll channel is controlled. In order to adopt the back stepping control design, the model (1) can be transformed into the following:

Step 2

Simulation Results and Discussions

Conclusion