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About This Item
Full Description
Reports the application of an artificial neural network (ANN) to serve both as a system identifier and as an intelligent controller for an air-handling system. A comprehensive software model has been established based on the specifications of a standard air-handling unit (AHU) on the market. The model is appropriate for testing various control algorithms including the new ANN identifier/controller. The ANN behaves as an identifier by continuously keeping track of all real-time parameters associated with the whole air-handling system. Five actuating signals are produced based on the nonlinear error optimisation of the outputs of the ANN, now served as a controller. The control target involves the minimisation of two weighted factors - the errors between setpoints and control variables and the total energy consumption. The excellent performance of the ANN identifier/controller is illustrated by comparing it with that of a conventional proportional-integral-derivative (PID) controller.
KEYWORDS: year 1995, expert systems, building services, controls, automatic, comparing, programmable controllers, air handling units, testing, algorithms, performance