Naslov
Approximately Time-Optimal State Space Control Employing Fuzzy Logic

Autori
Cupec, Robert ; Perić, Nedjeljko ; Žunac, Robert

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 16'th IASTED International Conference Modelling, Identification And Control / Hamza, M.H. - : International Association of Science and Technology for Development (IASTED), 1997, 402-405

Skup
16'th IASTED International Conference modelling, identification and control

Mjesto i datum
Innsbruck, Austrija, 17.02.1997. - 19.02.1997

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
time-optimal control; state space control; fuzzy logic control; two-tank system

Sažetak
A structure for approximately time-optimal state space control employing fuzzy logic is discussed. Controller inputs are state variable errors, i.e. the difference between measured values and references. Fuzzy logic is used to provide time-optimal transient. Feedforward gain and a state estimator are used to estimate the steady-state control signal. An integrator is used to avoid steady-state error. A method for obtaining the parameters of a fuzzy logic controller using a simplified linear model of the plant, is presented. The method is developed for second order systems. Fuzzy logic is used for the emulation of a nonlinear time-optimal control function. Normalization of the fuzzy logic controller inputs and output provides the time-optimal behavior of the system over the entire operating range, using a time-optimal control function designed for the specific operating point. The proposed method is tested by simulation of the level control in a two-tank system.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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