南京理工大学学报(自然科学版)
南京理工大學學報(自然科學版)
남경리공대학학보(자연과학판)
JOURNAL OF NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
2014年
4期
544-549
,共6页
无线网络控制系统%固定拓扑结构%鲁棒控制%故障观测器%观测器增益%线性矩阵不等式%故障检测
無線網絡控製繫統%固定拓撲結構%魯棒控製%故障觀測器%觀測器增益%線性矩陣不等式%故障檢測
무선망락공제계통%고정탁복결구%로봉공제%고장관측기%관측기증익%선성구진불등식%고장검측
wireless networked control systems%fixed topology%robust control%fault observers%observer gains%linear matrix inequality%fault detection
为了提高无线网络控制系统对故障的灵敏度,该文根据鲁棒控制理论,对一类具有固定拓扑结构的无线网络控制系统的故障检测进行了研究。由于网络中节点的状态受到其它节点的影响,因此该文为每个节点对之间设计了故障观测器来对系统的故障进行检测。通过构建Lyapunov函数,以线性矩阵不等式的方式给出了使误差系统渐进稳定的充分条件,更进一步得到了系统的观测器增益。仿真结果表明,当系统出现故障时,故障观测器能够迅速检测到系统残差的跳变,验证了所提方法的有效性。
為瞭提高無線網絡控製繫統對故障的靈敏度,該文根據魯棒控製理論,對一類具有固定拓撲結構的無線網絡控製繫統的故障檢測進行瞭研究。由于網絡中節點的狀態受到其它節點的影響,因此該文為每箇節點對之間設計瞭故障觀測器來對繫統的故障進行檢測。通過構建Lyapunov函數,以線性矩陣不等式的方式給齣瞭使誤差繫統漸進穩定的充分條件,更進一步得到瞭繫統的觀測器增益。倣真結果錶明,噹繫統齣現故障時,故障觀測器能夠迅速檢測到繫統殘差的跳變,驗證瞭所提方法的有效性。
위료제고무선망락공제계통대고장적령민도,해문근거로봉공제이론,대일류구유고정탁복결구적무선망락공제계통적고장검측진행료연구。유우망락중절점적상태수도기타절점적영향,인차해문위매개절점대지간설계료고장관측기래대계통적고장진행검측。통과구건Lyapunov함수,이선성구진불등식적방식급출료사오차계통점진은정적충분조건,경진일보득도료계통적관측기증익。방진결과표명,당계통출현고장시,고장관측기능구신속검측도계통잔차적도변,험증료소제방법적유효성。
In order to improve the sensibility of wireless networked control systems( WNCSs) to fault, fault detection for a class of WNCSs with a fixed topology is studied based on the robust control theory. Since the states of nodes in the network are affected by other nodes,fault detection observes are designed for each pair of nodes. By constructing Lyapunov functional, sufficient conditions are acquired in terms of linear matrix inequalities to make the error system asymptotically stable,and the gains of observes are also obtained. Simulation results show that when the system fault occurs, residual changes can be quickly detected by fault detection observes,which verifies the effectiveness of the proposed method.