  Memristor (memory-resistor) is the fourth passive circuit element. We
introduce a memristor model based on a fuzzy logic window function. Fuzzy
models are flexible, which enables the capture of the pinched hysteresis
behavior of the memristor. The introduced fuzzy model avoids common problems
associated with window-function based memristor models, such as the terminal
state problem, and the symmetry issues. The model captures the memristor
behavior with a simple rule-base which gives an insight of how memristors work.
Because of the flexibility offered by the fuzzy system, shape and distribution
of input and output membership functions can be tuned to capture the behavior
of various real memristors.
