Interval Observers Design for Polynomial Fuzzy Singular Systems by Utilizing Sum-of-Squares Program

This paper designs interval observers for polynomial fuzzy singular systems, in which the external disturbances and unknown parameters are included in the systems. The polynomial fuzzy modelings are proposed, which are more practical than Takagi-Sugeno fuzzy modelings. Then, the interval observers are designed for nonnegative and generic systems. The stability conditions are proposed by sum-of-squ...