Lookup NU author(s): Dr Sadegh Soudjani
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
We present an approach for formal controller synthesis of the Barcelona wastewater system. The goal of the controller is to minimize overflow in the system and to reduce environmental contamination (pollution). Due to the influence of sudden and unpredictable weather changes within the Mediterranean climate, we propose robust model predictive control strategy. This approach synthesizes control inputs (i.e., flows through network actuators) that make the system robust to uncertainties in the weather forecast; control inputs are updated in an online fashion to incorporate the newly available measurements from the system and the disturbances. We employ signal temporal logic as a formal mechanism to express the desired behavior of the system. The quantitative semantics of the logic is then used to encode the desired behavior in both the set of constraints and the objective function of the optimization problem. We propose a solution approach for the obtained worst-case optimization, which is based on transforming the nonlinear dynamics of the system into a mixed logical dynamical model. Then, we employ Monte Carlo sampling and dual reformulation to get a mixed integer linear or quadratic programming problem.The proposed approach is applied to a catchment of the Barcelona wastewater system to illustrate its effectiveness.
Author(s): Farahani SS, Soudjani S, Majumdar R, Ocampo-Martinez C
Publication type: Article
Publication status: Published
Journal: Journal of Process Control
Print publication date: 01/09/2018
Online publication date: 15/08/2018
Acceptance date: 31/05/2018
Date deposited: 04/11/2019
ISSN (print): 0959-1524
ISSN (electronic): 1873-2771
Publisher: Elsevier Ltd
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