Design of a controller for direct thrust control systems using fuzzy Petri nets

The direct thrust control has been utilized as a general formalism methodology for permanent magnet linear synchronous motors. And also fuzzy Petri nets can support an effective rule to deduce the inexact information. Based on the reasons, this paper focuses on the use of fuzzy Petri nets to model the switching table for obtaining optimal voltage vector patterns. The main idea is proposed a methodology to perform switching-table-based direct thrust control by fuzzy Petri net model. The advantage of the proposed approach is that the optimum voltage vectors can be obtained by the fuzzy Petri net model directly. Finally, the correct flux vector control behaviors and position tracking performances can be performed.