Design and Implementation of a new fuzzy logic controller

摘要

This paper presents a new implementation of a fuzzy controller as a mixed-signal chip where the computing power is provided by the analog part, while the digital part offers programmability. The proposed controller chip results in a novel Membership Function Circuit (MFC) as well as its programmable version, a new structure for Min/Max operators. The internal processing is performed in current-mode, but I/O interface is realized in voltage-mode to ease communication with conventional circuitry. This controller is a general-purpose fuzzy controller (3 x 3) that can be implemented in less than 0.04 mm- in 0.35 urn CMOS technology. The maximum delay in output is about 43 ns that corresponds to 25.97 MFLIPS.