Unified Architecture of Active Fault Detection and Partial Active Fault-Tolerant Control for Incipient Faults
Unified Architecture of Active Fault Detection and Partial Active Fault-Tolerant Control for Incipient Faults
复制标题
针对初期故障的主动故障检测和部分主动容错控制的统一架构
DOI：
10.1109/tsmc.2017.2667683
复制
发表时间：
2017-07-01
影响因子：
8.7
通讯作者：
Zhou, Jinglin
中科院分区：
文献类型：
--
作者：
Wang, Jing;Zhang, Jingjing;Zhou, Jinglin
由于传统控制器固有的容错性，早期故障很难被发现，但应在故障随着时间的推移恶化成更严重的问题之前尽快消除。由于现有的检测方法无法基于输出残差来评估故障是否发生，因此对于早期故障的检测方法是失效的。主动故障检测（AFD）的目的是使系统在出现早期故障时处于不稳定状态，从而实现快速故障检测。容错控制（FTC）的目的是保持系统稳定，消除故障影响，即使发生故障也不会关闭进程。本文在分析故障与双YJBK参数关系的基础上，采用YJBK （youla - jabr - bongiorno - kuucera）参数建立了AFD和FTC。设计了一种新的FTC容错控制器参数结构，称为部分有源FTC （PAFTC）。考虑到故障大小未知、形式已知的参数故障，PAFTC依赖于故障检测信息而不是故障大小。针对早期故障，提出了不同YJBK参数的AFD和PAFTC统一运行架构。算例表明了所提出的统一操作体系结构的有效性。
Incipient faults are difficult to be detected due to the intrinsic fault tolerance of traditional controller, but it should be eliminated as soon as possible before it deteriorates with time into something more serious. As a consequence of an intrinsic inability to assess whether a fault occurs based on output residual, the existing detection methods are failure for incipient fault. So the aim of active fault detection (AFD) is to make the system be unstable when incipient fault has occurred, which drives rapid fault detection. The fault-tolerant control (FTC) is designed to maintain the system stable and eliminate the fault impact without shutting the process down even if faults occur. In this paper, the Youla–Jabr–Bongiorno–Kucera (YJBK) parameter is employed to build the AFD and the FTC based on the relationship analysis between the fault and the dual YJBK parameter. A new structure of the tolerant controller parameter for FTC is designed, named as partial active FTC (PAFTC). PAFTC is dependent upon the fault detection information but not the fault size considering the parameter fault with unknown size and known form. A unified operation architecture for AFD and PAFTC with different YJBK parameters for incipient faults is proposed. Some illustrative examples are given to indicate the effectiveness of the proposed unified operation architecture.