Constrained Controller Design for Real-time Delay Recovery in Metro Systems

Najafi, Sima; Moaveni, Bijan

doi:10.22068/IJRARE.4.2.23

Volume 4, Issue 2 (10-2017) IJRARE 2017, 4(2): 23-31 | Back to browse issues page

‎ 10.22068/IJRARE.4.2.23

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Najafi S, Moaveni B. Constrained Controller Design for Real-time Delay Recovery in Metro Systems. IJRARE 2017; 4 (2) :23-31
URL: http://ijrare.iust.ac.ir/article-1-171-en.html

Constrained Controller Design for Real-time Delay Recovery in Metro Systems

Sima Najafi

, Bijan Moaveni

School of Railway Engineering, Iran University of Science and Technology

Abstract: (1912 Views)

This study is concerned with the real-time delay recovery problem in metro loop lines. Metro is the backbone of public transportation system in large cities. A discrete event model for traffic system of metro loop lines is derived and presented. Two effective automatic controllers, linear quadratic regulator (LQR) and model predictive controller (MPC), are used to recover train delays. A newly-designed real-time algorithms for constrained LQR and constrained MPC in the presence of operational constraint on control actions is introduced. MPC and LQR automatic controllers are compared for traffic regulation in metro loop lines. To facilitate fair comparison of the performance of the automatic controllers, different scenarios are considered. The results are then compared to determine the relative effectiveness of the controllers.

Keywords: Constrained control, Linear quadratic regulator, Model predictive controller, Delay recovery, Metro loop line

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Type of Study: Research | Subject: Electrical railway