Publication

Output-feedback control of combined sewer networks through receding horizon control with moving horizon estimation

Journal Article (2015)

Journal

Water Resources Research

Pages

8129-8145

Volume

51

Number

10

Doc link

http://dx.doi.org/10.1002/2014WR016696

File

Download the digital copy of the doc pdf document

Abstract

An output-feedback control strategy for pollution mitigation in combined sewer networks is presented. The proposed strategy provides means to apply model-based predictive control to large-scale sewer networks, in-spite of the lack of measurements at most of the network sewers. In previous works, the authors presented a hybrid linear control-oriented model for sewer networks together with the formulation of Optimal Control Problems (OCP) and State Estimation Problems (SEP). By iteratively solving these problems, preliminary Receding Horizon Control with Moving Horizon Estimation (RHC/MHE) results, based on flow measurements, were also obtained. In this work, the RHC/MHE algorithm has been extended to take into account both flow and water level measurements and the resulting control loop has been extensively simulated to assess the system performance according to different measurement availability scenarios and rain events. All simulations have been carried out using a detailed physically-based model of a real case-study network as virtual reality.

Categories

control system synthesis, observability, optimisation, predictive control.

Author keywords

output-feedback control, moving horizon estimators, sewer networks, urban water cycle

Scientific reference

B. Joseph, C. Ocampo-Martínez and G. Cembrano. Output-feedback control of combined sewer networks through receding horizon control with moving horizon estimation. Water Resources Research, 51(10): 8129-8145, 2015.