設計反飛彈導引容錯控制律之研究

Abstract

本論文的主要目的在於探討反飛彈系統容錯導引律之設計。為了使反飛彈在終端導引階段時，能有良好的初始狀態，本論文提出建構反飛彈最佳導引路徑，以期在消耗最小能量及時間的狀況下導引反飛彈至敵方導彈彈道內，同時本論文也引進容錯控制技術並且設計錯誤偵測與診斷觀測器來達成主動容錯控制之目的。由模擬結果顯示，不但觀測器能成功地偵測與診斷致動器發生故障或異常情況，同時所設計的容錯控制律也能成功的達到導引攔截飛彈之任務，使反飛彈系統具有智慧型的容錯控制能力。

This thesis investigates the design of reliable guidance laws for an anti-missile system. In order to promote the interception efficiency, we first propose an optimal space trajectory, which is to be tracked by the anti-missile is predicted to be at a right time and right direction. Then both passive and active VSC reliable guidance laws are proposed to track the optimal trajectory. These reliable laws are shown to be able to tolerate the outage of some redundant actuators. In order to perform the active reliable mission, we also propose a fault detection and diagnosis mechanism to detect and diagnose the actuators’ faults. These reliable laws are easily implemented because they need not the solution of a Hamilton-Jacobi (HJ) equation, which are essentially for optimal reliable designs and are known difficult to solve. Simulation results demonstrate the effectiveness and the benefits of the proposed reliable design.