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2018-09-28
Demkiv, L., Lozynskyy, A., Lozynskyy, O., Demkiv, I..  2017.  A new approach to dynamical system's fuzzy controller synthesis: Application of the unstable subsystem. 2017 International Conference on Modern Electrical and Energy Systems (MEES). :84–87.

A general approach to the synthesis of the conditionally unstable fuzzy controller is introduced in this paper. This approach allows tuning the output signal of the system for both fast and smooth transient. Fuzzy logic allows combining the properties of several strategies of system tuning dependent on the state of the system. The utilization of instability allows achieving faster transient when the error of the system output is beyond the predefined value. Later the system roots are smoothly moved to the left-hand side of the complex s-plane due to the change of the membership function values. The results of the proposed approaches are compared with the results obtained using traditional methods of controller synthesis.