Abstract Petri net based approach to problem solving in real time applications

~k i n g u m g . u w a t c r i~. c a This paper describes the use of fuzzy logic in the scheduling of a group of elevators. A new "orbital" paradigm is inaoduced that offers a simple unified framework under which scheduling can be completed. The principle is to choose a configuration of elevator placements upon an "orbital circle" that best firs a number of fuzzy constraints. To our knowledge, fuzzy logic has traditionally been used to support the more established techniques, such as expert knowledge-base approaches. Our system uses fuzzy logic alone to make non-predetermined control decisions. The "fuzzy orbital" scheduler was implemented and simulation resulu illustrate the viability of this paradigm. Controlling of a group of elevators in a multistorybuilding is a complex problem. Many different approaches to solving this problem have been investigated. First the background involving the scheduling of elevators will be discussed. This is followed by the design criteria, an outline of the "orbital" paradigm. a description of the rule base, and an overview of our architecture. Simulation results are presented and finally some conclusions are suggested.

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Abstract Petri net based approach to problem solving in real time applications

Cited by 2 publications

References 2 publications

Rule-based design methodology for solving control problems

Rule-based design methodology for solving control problems

Elevator group supervisory control using fuzzy logic

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