3620

3419

كارشناسي ارشد

كنترل

اصفهان : دانشگاه صنعتي اصفهان ، دانشكدة برق وكامپيوتر

1386

نه ، 102 ، [II] ص : مصور ، جدول ، نمودار

ص . ع. به فارسي و انگليسي

مهندسي برق و كامپيوتر

ID3419

به فارسي وانگليسي : قابل رويت درنسخه ديجيتال

Abstract Stability analysis is one of the most important issues in any control system In recentyears Takagi Sugeno T S model has attracted many control system designers because ofhaving employed human knowledge intelligence and also its flexibility in precisemodeling Two different approaches are proposed for the stability analysis of Takagi Sugeno systems In the first approach stability analysis of continuous T S fuzzy systems is discussedwhen the state matrices of the subsystems are pair wise commutative For this purpose asystematic method is proposed in order to find the matrix P for these kinds of fuzzysystems Then the quadratic stability analysis is extended to the continuous time T S fuzzysystems without this property In the second approach stability analysis is performed on systems with 2 2 statematrices At first the existing region of the common positive matrix P is determined Subsequently a special case of subsystems is considered where the state matrices are alsosymmetric In this method the diagonal part of the state matrices are considered asnominal matrices of the subsystems while the sub diagonal parts are considered as thecorresponding uncertainty for these subsystems The uncertainty bound for the sub diagonal entries is determined The bound is calculated in such a way that the matrix Pobtained from the diagonal part of the state matrices if it does exist remains a commonpositive definite matrix for the fuzzy system

فريد شيخ الا سلام

جواد عسكري

سعيد حسين نيا ، محمود طاهري