The fuzzy systems with variable universe of discourse (VUD) have received increasing
attention due to their fine control performance. VUD fuzzy systems are ones in which …

In the last 20years, while most research on fuzzy approximation theory has focused on
nonadaptive fuzzy systems, little work has been done on adaptive fuzzy systems. This paper …

Using field data from sensors to construct a fuzzy controller based on variable universe of
discourse (VUD) is an open question that is often encountered in real-world applications …

This paper focuses on simplifying the structure of fuzzy systems and improving the precision.
By regarding the fuzzy rule base as a mapping from the vague partition on the input universe …

Fuzzy controllers with variable universe of discourse (VUD) have been applied in many
fields of intelligent controlling because of their high-accuracy performance. This paper …

The accurate input-output universe of discourse (UOD) on which membership functions are
defined is hard to acquire in many situations and control accuracy will reduce greatly in the …

In this research, a vague controller (VC) is synthesized by using the notion of vague sets,
which are a generalization of fuzzy sets and characterized by a truth-membership function …

The paper presents a robust parallel distributed compensation (PDC) fuzzy controller for a
nonlinear and certain system in continuous time described by the Takagi-Sugeno (TS) fuzzy …

Purpose–The purpose of this paper is to answer the question that what the best shape of
fuzzy sets is in fuzzy systems for function approximation which is essential in many …

This paper focuses on presentation of a method to bidirectional interval-valued fuzzy
approximate reasoning by employing a weighted similarity measure between the fact and …