𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Robust control design of an activated sludge process

✍ Scribed by P. G. Georgieva; S. Feyo De Azevedo

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
172 KB
Volume
9
Category
Article
ISSN
1049-8923

No coin nor oath required. For personal study only.

✦ Synopsis

A H-inf control strategy is presented for a robustly performing activated sludge process. In operational terms, the objective is to conduct the process imposing that the biomass concentration in the recycle stream follows closely a time-varying, process-dependent, reference signal. The corresponding control objective is described as the development of a robust reference-tracking control structure with the best possible disturbance compensation, able to perform with noisy measurements and able to cope with variations in key process model parameters. The proposed algorithm embeds an estimation of states by solving the Riccati equation and avoids parameter estimation by assuming their variability within known bounds. Results are presented which show a favourable behaviour of the robust controller in comparison with a conventional PI control structure.

πŸ“œ SIMILAR VOLUMES

Non-linear multivariable adaptive contro
Non-linear multivariable adaptive control of an activated sludge wastewater treatment process
✍ F. Nejjari; B. Dahhou; A. Benhammou; G. Roux πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 179 KB πŸ‘ 2 views

In this paper a non-linear adaptive feedback-linearizing control is designed for a biological wastewater treatment model. The adaptive control structure is based on the non-linear model of the process and combined with a joint observer estimator which plays the role of the software sensor for the on

Analysis of endogenous process behavior
Analysis of endogenous process behavior in activated sludge
✍ K. J. Keesman; H. Spanjers; G. van Straten πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 153 KB

In this article, an autonomous four-compartment model that describes the endogenous respiration in an aerobic biodegradation process is proposed and analyzed theoretically. First, the multi-time scale of the system's behavior, to be taken into account in subsequent analyses, is emphasized. Then, an