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SCADA system with predictive controller applied to irrigation canals
Figueiredo, João; Botto, Miguel; Rijo, ManuelThis paper applies a model predictive controller (MPC) to an automatic water canal with sensors and actuators controlled by a network (programmable logic controller), and supervised by a SCADA system (supervisory control and a data acquisition). This canal is composed by a set of distributed sub-systems that control the water level in each canal pool, constrained by discharge gates (control variables) and water...
Multivariable and distributed LQG control of a water delivery canal
Lemos, João; Pinto, Luís; Rato, Luís; Rijo, ManuelThis work addresses the problem of the development of a distributed LQG controller for a water delivery canal. The control structure proposed relies on a set o LQG control agents interconnected through a communication network. Each of these local control agents controls a canal reach made of a pool and the corresponding downstream gate and receives information (output signal and control moves) only from the cor...
Actuator Fault Tolerant LQG Control of a Water Delivery Canal
Lemos, João; Sampaio, Inês; Rijo, Manuel; Rato, LuísThe problem of reconfiguration of the control system to mitigate the effects of actuator faults in a water delivery canal is addressed in this paper. When a fault in an actuator is detected and isolated, the controller is reconfigured by changing the set of manipulated and process variables and using a different controller, associated to a different plant model, in a hybrid systems framework. In order to preven...
Experimental application to a water delivery canal of a distributed MPC with st...
Lemos, João; Igreja, José; Cadete, Fernando; Rijo, Manuel; Rato, LuísIn this work, a novel distributed MPC algorithm, denoted D-SIORHC, is applied to upstream local control of a pilot water delivery canal. The D-SIORHC algorithm is based on MPC control agents that incorporate stability constraints and communicate only with their adjacent neighbors in order to achieve a coordinated action. Experimental results that show the effect of the parameters configuring the local controlle...
Control of a water delivery canal with cooperative distributed MPC
Igreja, J.M.; Lemos, João; Cadete, F.M.; Rato, Luís; Rijo, ManuelThis article addresses the problem of controlling pool levels in a water delivery canal using a novel cooperative distributed MPC control algorithm that incorporates stability constraints. According to a distributed control strategy, a local control agent is associated to all canal gates (actuators). In order to achieve cooperative action, each control agent computes the corresponding gate position (manipulated...
Distributed LQG control of a water delivery canal with feedforward from measure...
Lemos, João; Pinto, Luís; Rato, Luís; Rijo, ManuelThis work addresses the design of distributed LQG controllers for water delivery canals that include feedforward from local farmer water consumptions. The proposed architecture consists of a network of local control agents, each connected to one of the canal pools and sharing information with their neighbors in order to act in a coordinated way. In order to improve performance, the measurement of the outflows f...
Fault Tolerant Reconfigurable Control of a Water Delivery Canal - Actuators Faults
Sampaio, Inês; Lemos, João; Rato, Luís; Rijo, ManuelThis work addresses the problem of designing fault tolerant controllers for a water delivery canal that tackle actuators faults. The type of faults considered consists of blocking of one of the gates. The detection of the fault is made by comparing the gate position command with the actual (measured) gate position. Both centralized and distributed controllers are made for local upstream water level control. Cen...
Parameter Tuning of a Distributed Model Predictive Controller for Water Deliver...
Igreja, José; Lemos, João; Cadete, Filipe; Rato, Luís; Rijo, ManuelThis work addresses the problem of tuning the parameters of a distributed model predictive control algorithm (DMPC) applied to the control of water level in a water delivery canal. The D-SIORHC algorithm considered is based on distributed MPC control agents that incorporate stability constraints. Coordination of the different controllers is achieved by a negotiation among neighbor agents. The value of the contr...
Simulation of automatic control of an irrigation canal
Lozano, David; Arranja, Carina; Rijo, Manuel; Mateos, LucianoImproved water management and efficient investment in the modernization of irrigation schemes are essential measures in many countries to satisfy the increasing demand for water. Automatic control of the main canals is one method for increasing the efficiency and flexibility of irrigation systems. In 2005, one canal in the irrigation scheme ‘Sector BXII del Bajo Guadalquivir’ was monitored. This canal is repres...
Multi-Platform Controller Interface for SCADA Application
Duarte, José; Rato, Luís; Shirley, Paulo; Rijo, ManuelThis paper concerns the development of a SCADA-Controller Interface (SCI) application for an open-channel experimental facility. Water delivery canals are complex and spatially distributed systems. The proposed application is to be applied to test control algorithms developed by several research groups with different technical approaches. The proposed interface allows the development of controllers in different...
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