http://hdl.handle.net/10174/141 2026-04-08T09:47:49Z 2026-04-08T09:47:49Z Rato, Luís Salgueiro, Pedro Lemos, João Miranda Rijo, Manuel http://hdl.handle.net/10174/1583 2012-10-18T15:10:00Z 2007-04-30T23:00:00Z

Title: Adaptive Predictive Controller Applied to an Open Water Canal Authors: Rato, Luís; Salgueiro, Pedro; Lemos, João Miranda; Rijo, Manuel Abstract: This paper concerns to the application of adaptive control to a large scale water canal experimental plant. Water canals are complex spatially distributed systems which aim at distributing water either for irrigating, or domestic, or industrial purposes. In this paper a predictive adaptive control algorithm (MUSMAR) is applied to a large scale experimental water canal prototype. The experimental facilities with a fully instrumented canal, a PLC network and a SCADA system, are briefly described. This paper describes the developed software module and the MUSMAR control algorithm. Finaly, Some experimental results obtained in the experimental water canal, are presented.

2007-04-30T23:00:00Z Romão, Teresa Rato, Luís Fernandes, Pedro Alexandre, Nuno Almada, Antão Capeta, Nuno http://hdl.handle.net/10174/1443 2009-04-07T14:38:06Z 2006-04-30T23:00:00Z

Title: M-Traffic - A Traffic Information and Monitoring System for Mobile Devices Authors: Romão, Teresa; Rato, Luís; Fernandes, Pedro; Alexandre, Nuno; Almada, Antão; Capeta, Nuno Abstract: This paper presents Mobile Traffic (M-Traffic), a multiplat- form online traffic information system, which provides real time traffic information based on image processing, sensor’s data and traveller be- haviour models. In order to estimate route delay and feed the optimal routing algorithm a traffic microscopic simulation model is developed and simulation results are presented. This mobile information service ubiqui- tously provides users with traffic information regarding their needs and preferences, according to an alert system, which allows a personalised pre-definition of warning messages.

2006-04-30T23:00:00Z Rato, Luís Rodrigues, Irene Pimenta Gomes, Rui http://hdl.handle.net/10174/1373 2016-03-29T11:11:05Z 2005-08-31T23:00:00Z

Title: KNOWLEDGE REPRESENTATION APPROACH TO CLOSED LOOP CONTROL SYSTEM - A TANK SYSTEM CASE-STUDY Authors: Rato, Luís; Rodrigues, Irene Pimenta; Gomes, Rui Abstract: Control engineering problems are dealt within a plethora of methods and approaches depending on the a priori knowledge, the description of the process to control, and the main control goal. Classical control theory is mainly based on properties of numerical models. This paper presents an approach that applies to a class of processes described by numerical and logical relations using inference and a knowledge base system. To attain this goal an ontology for control systems is constructed. The work presented in this paper is based in a three tank system benchmark.

2005-08-31T23:00:00Z Lemos, João Miranda Rato, Luís Machado, Fernando Nogueira, Nuno Salgueiro, Pedro Rijo, Manuel http://hdl.handle.net/10174/1372 2008-12-23T11:58:07Z 2007-08-31T23:00:00Z

Title: Predictive Adaptive Control of water level in canal pools Authors: Lemos, João Miranda; Rato, Luís; Machado, Fernando; Nogueira, Nuno; Salgueiro, Pedro; Rijo, Manuel Abstract: A case study on the use of a predictive adaptive algorithm to control pool level in a pilot water distribuition canal is described. The algorithm is a modification of the basic MUSMAR controller that includes parallel integral action and, in the case of multiple pools, feedforward action to coordinate the gates. Experimental results in the case of a single pool and simulations for multiple pools are presented. The contributions of the paper stem from the explicitation of rules for tuning the adaptive controller in a practical situation and from the coordination of different pools using reduced complexity controllers and feedforward in a multivariable setting

2007-08-31T23:00:00Z