Minimum-Energy Run-time Control of Rapid Transit Trains
Date Issued
2008
Date
2008
Author(s)
Hsu, Yun-Chung
Abstract
In the Mass Rapid Transit (MRT) system, the train regulation system provides each train with desired run time between two adjacent stations so as to track the train schedule and designed headway. The goal of train control is traditionally to minimize the run time error and in addition in this research to minimize the energy demand subject to train dynamics, track profile, and disturbance from passenger load. Essentially, the problem dynamics is nonlinear and disturbed so that linear optimal control approach is not appropriate. This thesis proposes the adaptive critic train profile control method to solve this complex optimization problem. The optimal control quantities that may result in optimal train profile are found by satisfying the principle of optimality in dynamic programming. The dual heuristic programming method and multilayered perceptrons are employed to design the adaptive critic train profile control system. The train model and energy model of MRT train are derived in detail. The feasibility and performance of the adaptive critic train profile control are verified by simulation results from applications in stations on Blue line of Taipei MRT system. The results suggest that the method is promising in energy saving and run time control.
Subjects
mass rapid transit system
energy saving
train model
train control
adaptive critic design
dual heuristic programming
Type
thesis
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