Enhanced Composite Nonlinear Control Technique using Adaptive Control for Nonlinear Delayed Systems

Author(s): Sonal Singh*, Shubhi Purwar

Journal Name: Recent Advances in Electrical & Electronic Engineering
Formerly Recent Patents on Electrical & Electronic Engineering

Volume 13 , Issue 3 , 2020

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Graphical Abstract:


Background and Introduction: The proposed control law is designed to provide fast reference tracking with minimal overshoot and to minimize the effect of unknown nonlinearities and external disturbances.

Methods: In this work, an enhanced composite nonlinear feedback technique using adaptive control is developed for a nonlinear delayed system subjected to input saturation and exogenous disturbances. It ensures that the plant response is not affected by adverse effect of actuator saturation, unknown time delay and unknown nonlinearities/ disturbances. The analysis of stability is done by Lyapunov-Krasovskii functional that guarantees asymptotical stability.

Results: The proposed control law is validated by its implementation on exothermic chemical reactor. MATLAB figures are provided to compare the results.

Conclusion: The simulation results of the proposed controller are compared with the conventional composite nonlinear feedback control which illustrates the efficiency of the proposed controller.

Keywords: Nonlinear delayed system, input saturation, composite nonlinear feedback control, adaptive control, linear matrix inequality, lyapunov-krasovskii analysis.

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Article Details

Year: 2020
Published on: 26 December, 2018
Page: [396 - 404]
Pages: 9
DOI: 10.2174/2213111607666181226151059
Price: $25

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