Fault tolerant control system design with explicit consideration of performance degradation
Fault tolerant control system design with explicit consideration of performance degradation
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DOI：
10.1109/taes.2003.1238740
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发表时间：
2003-10
影响因子：
4.4
通讯作者：
Youmin Zhang;Jin Jiang
中科院分区：
文献类型：
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作者：
Youmin Zhang;Jin Jiang
提出了一种新的方法，主动容错控制系统（FTCS），它允许一个明确纳入允许的系统性能下降的情况下，部分执行器故障的设计过程。该方法是基于模型跟踪和命令输入管理技术。动态性能的退化通过退化的参考模型来解释。还提出了一种新的方法，选择这样的模型。稳态性能的退化处理使用命令输入调整技术。当故障检测和诊断（FDD）计划检测到故障时，可重构控制器的设计自动使用的特征结构配置算法在一个明确的模型跟踪框架，使闭环系统的动态遵循退化的参考模型。同时，还自动调整指令输入，以防止执行器饱和。所提出的方法已被评估使用的横向动力学的F-8飞机对致动器故障的限制的幅度上的致动器输入。取得了非常令人鼓舞的成果。
A new approach is proposed for active fault tolerant control systems (FTCS), which allows one to explicitly incorporate allowable system performance degradation in the event of partial actuator fault in the design process. The method is based on model-following and command input management techniques. The degradation in dynamic performance is accounted for through a degraded reference model. A novel method for,selecting such a model is also presented. The degradation in steady-state performance is dealt with using a command input adjustment technique. When a fault is detected by the fault detection and diagnosis (FDD) scheme, the reconfigurable controller is designed automatically using an eigenstructure assignment algorithm in an explicit model-following framework so that the dynamics of the closed-loop system follow that of the degraded reference model. In the mean time, the command input is also adjusted automatically to prevent the actuators from saturation. The proposed method has been evaluated using the lateral dynamics of an F-8 aircraft against actuator faults subject to constraints on the magnitude of actuator inputs. Very encouraging results have been obtained.