takagi-sugeno fuzzy systems non-fragile h-infinity filtering investigates the problem of non-fragile h-infinity filter design for takagi-sugeno (t-s) fuzzy systems. given a t-s fuzzy system, the objective of this book is to design an h-infinity filter with the gain variations such that the filtering error system guarantees a prescribed h-infinity performance level. furthermore, it demonstrates that the solution of non-fragile h-infinity filter design problem can be obtained by solving a set of linear matrix inequalities (lmis). the intended audiences are graduate students and researchers both from the fields of engineering and mathematics. dr. xiao-heng chang is an associate professor at the college of engineering, bohai university, jinzhou, liaoning, china.