Adaptive fuzzy rough approximate time controller design methodology: concepts, Petri net model and application

This paper presents an approach to the design of an adaptive fuzzy rough approximate time controller which utilizes a combination of fuzzy set and rough set theories. A rough fuzzy Petri net model of such a controller is included. The adaptive controller design methodology is illustrated relative to a partial attitude control system for small satellites. Specifically, the approach is illustrated relative to controlling the pitch angle in an attitude control system for a small satellite.