广西科学
廣西科學
엄서과학
Guangxi Sciences
2015年
4期
416-420
,共5页
奇异脉冲系统%时变 Lyapunov 函数%指数稳定性%凸组合技术
奇異脈遲繫統%時變 Lyapunov 函數%指數穩定性%凸組閤技術
기이맥충계통%시변 Lyapunov 함수%지수은정성%철조합기술
singular impulsive system%time-varying Lyapunov function%exponential stability%convex combination technique
奇异脉冲系统是一类不连续的奇异系统,其状态在一系列离散时刻发生跳变。为充分刻画离散脉冲作用下奇异系统状态不连续的动态特征,提出基于时变 Lyapunov 函数的稳定性分析方法。通过运用此方法,并借助于凸组合技术,建立了一类奇异脉冲系统指数稳定性的充分条件。该稳定性条件以线性矩阵不等式形式给出,定量地揭示了脉冲区间及脉冲强度对系统稳定性影响。最后,用一个数值算例验证了所得结果的有效性。
奇異脈遲繫統是一類不連續的奇異繫統,其狀態在一繫列離散時刻髮生跳變。為充分刻畫離散脈遲作用下奇異繫統狀態不連續的動態特徵,提齣基于時變 Lyapunov 函數的穩定性分析方法。通過運用此方法,併藉助于凸組閤技術,建立瞭一類奇異脈遲繫統指數穩定性的充分條件。該穩定性條件以線性矩陣不等式形式給齣,定量地揭示瞭脈遲區間及脈遲彊度對繫統穩定性影響。最後,用一箇數值算例驗證瞭所得結果的有效性。
기이맥충계통시일류불련속적기이계통,기상태재일계렬리산시각발생도변。위충분각화리산맥충작용하기이계통상태불련속적동태특정,제출기우시변 Lyapunov 함수적은정성분석방법。통과운용차방법,병차조우철조합기술,건립료일류기이맥충계통지수은정성적충분조건。해은정성조건이선성구진불등식형식급출,정량지게시료맥충구간급맥충강도대계통은정성영향。최후,용일개수치산례험증료소득결과적유효성。
Singular impulsive systems are a class of discontinuous singular systems where the state experiences jump at certain discrete instants.To fully characterize the discontinuous dy-namical feature of the system state under the impulse action,a method based on time-varying Lyapunov function is proposed for stability analysis.A sufficient condition for exponential sta-bility of linear singular impulsive systems is established by applying this method integrated with the technique of convex combination.The derived stability condition is expressed in terms of linear matrix inequalities,which quantitatively reveal the effects of impulsive intervals and impulse strength on system stability.Finally,a numerical example demonstrates the effective-ness of the obtained results.