本文關鍵詞： 故障檢測 非線性脈沖切換系統(tǒng) 濾波器 H_∞性能指標 H-性能指標　出處：《東北電力大學》2017年碩士論文　論文類型：學位論文

【摘要】：在實際生產過程中,許多系統(tǒng)都能夠被建模為切換系統(tǒng)。與此同時,許多學者在研究切換系統(tǒng)建模時也發(fā)現將部分的實際系統(tǒng)歸于一般的切換系統(tǒng)模型會與實際的結果不符,違背系統(tǒng)真實的規(guī)律。隨著研究的不斷深入,學者們發(fā)現許多系統(tǒng)同時具有脈沖和切換兩種特性,因此在切換系統(tǒng)的基礎上發(fā)展出了脈沖切換系統(tǒng)。脈沖切換系統(tǒng)是切換系統(tǒng)的一個重要分支,然而對脈沖切換系統(tǒng)的故障檢測問題的研究目前還尚處于起步階段。因此,該問題受到了越來越廣泛的關注。本文研究了離散非線性脈沖切換系統(tǒng)的故障檢測問題。主要工作內容如下:針對非線性脈沖切換系統(tǒng)的故障檢測問題,設計相應的故障檢測濾波器作為殘差產生器。提出基于平均駐留時間方法和多李雅普諾夫函數方法設計對應的切換信號,使系統(tǒng)具有穩(wěn)定性。將魯棒故障檢測問題轉化為H∞濾波問題,然后將這個問題歸納為一個解凸優(yōu)化的充分條件,通過求解線性矩陣不等式條件獲得故障檢測濾波器的增益。最后通過一個仿真實例證明其可行性。另一方面針對同樣的非線性脈沖切換系統(tǒng)的故障檢測問題,采用不同的方法設計另一個故障檢測濾波器,提出系統(tǒng)應當滿足的加權l(xiāng)2性能指標和H-性能指標,得到非線性脈沖切換系統(tǒng)的干擾抑制條件和故障敏感條件。最后通過設計閾值和殘差估計函數,當殘差估計函數大于閾值時,則發(fā)出報警信號,反之則正常運行,從而實現對非線性脈沖切換系統(tǒng)的故障檢測。最后通過一個仿真實例證明其有效性。
[Abstract]:In the actual production process, many systems can be modeled as a switched system. At the same time, many scholars in the modeling of switching system also found the actual parts of the system to the switching system model and the actual results are inconsistent, contrary to the true law of the system. With the deepening of research, scholars have found many systems at the same time with two kinds of pulse and switching characteristics, based on switching system has been developed on the pulse switching system. Impulsive switched system is an important branch of switched systems, however the research on the fault detection problem for impulsive switched systems is still in the initial stage. Therefore, the problem has been more and more widely pay attention to the problem of fault detection is studied in this paper. Discrete Impulsive Switched Systems. The main contents are as follows: according to the fault detection of nonlinear impulsive switched system problems Design, the corresponding fault detection filter as a residual generator. The switching signal design of average dwell time method and Li Yapu method based on the corresponding Lyapunov function, make the system more stable. The robust fault detection problem into H filtering problem, then the problem of induction is a sufficient condition for convex optimization, fault detection filter gain by solving linear matrix inequalities. Finally, a simulation example shows its feasibility. On the other hand, for the same nonlinear pulse fault detection problem of switched systems, design another fault detection filter using different methods, this system should meet the weighted L2 performance index and the performance index of H-, get the nonlinear interference impulsive switched system suppression conditions and fault sensitive conditions. Finally, through the design of threshold and residual function estimation, when When the residual estimation function is greater than the threshold, it sends out the alarm signal, otherwise it runs normally, so as to realize the fault detection of the nonlinear impulse switching system. Finally, a simulation example is given to prove its effectiveness.

【學位授予單位】：東北電力大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP13;TN713

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本文編號：1504563