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Robust Hybrid Feedback Control Design for Ramp Metering using Sliding Mode Control

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Author(s): Bhawna Sharma | Devanand | Pushkin Kachroo

Journal: International Journal of Advanced Research in Computer Science
ISSN 0976-5697

Volume: 04;
Issue: 09;
Start page: 153;
Date: 2013;
Original page

Keywords: Freeways | hybrid | dynamics | sliding | control | ramp | metering | chattering.

ABSTRACT
The paper presents the feedback control design for controlling the inflow into the freeways to reduce traffic congestion using hybriddynamics based on sliding control methodology. Earlier approaches for designing ramp metering based on discretized linearized methods or nonlinear designs using lumped parameters have limitations which are overcome using sliding mode control. The sliding controller design provides a systematic approach to the problem of maintaining stability and consistent performance. One of the most common handicaps for applying sliding mode control to real applications is chattering problem. This problem has been dealt by using boundary layer approach. Accordingly, we propose a novel sliding mode control without chattering. The proposed sliding mode control removes the chattering phenomenon by replacing a sign function with a continuous function. The simulation results for the model are also presented.
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