System behavior change in FLC by parameter sliding using distance based operators

The article analyses a system, which was controlled by FLC, and modelled by a first order differential equation. The simulation results are analysed, depending on the efficacy of the operator choice in approximate reasoning model. The program language environment, applied by simulation, supports the choosing of suitable fuzzy operators and their parameters. There is also an outline on future direction of the current fuzzy control system: building a hierarchical FLC system in which other environment parameters can be adaptively changed.