飞控系统执行机构受限的抗饱和自适应容错控制研究

项目名称： 飞控系统执行机构受限的抗饱和自适应容错控制研究

项目编号： No.61203087

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 自动化学科

项目作者： 关威

作者单位： 沈阳航空航天大学

项目金额： 25万元

中文摘要： 项目旨在研究飞行控制系统执行机构受限下的容错控制问题。针对系统容错控制过程中存在且不可避免的执行器响应能力受限问题，设计抗饱和自适应容错控制器，解决执行机构在三种（幅值、变化率及加速度）饱和现象下，传统容错控制策略无法被有效执行的问题。首先，将探究执行器三种饱和现象与系统故障现象并存时出现的新特征，分析饱和与故障间的相互作用机理, 建立相应的系统模型；其次，基于新的模型，研究抗饱和控制和自适应容错控制联合作用的内在变化规律，寻找执行器故障容忍度与吸引域、性能及扰动容许能力之间的定量关系；然后，设计适当的自适应控制策略来估计故障信息，通过自适应律对容错控制信号与抗饱和补偿信号进行综合调节，实现故障容忍度与吸引域、性能及扰动容许能力间的综合优化，提高系统的性能及安全性；最终，实现理论型成果向应用型成果转化，在实际工程中，为飞行器执行机构受限下的抗饱和容错控制提供强有力的理论指导。

中文关键词： 容错控制；执行器故障；执行器饱和；飞控系统；

英文摘要： The project studies the problem of fault-tolerant control for flight control systems with constrained actuators. For the inevitable problem of constrained actuator response capacity during the process of fault-tolerant control, traditional fault-tolerant control strategy cannot be effectively executed when the actuator's amplitude, rate of change, and acceleration are constrained. To overcome the difficulty, an anti-saturation adaptive fault-tolerant controller is designed to deal with the problem in the project. Firstly, the new features that occurs with the concurrency of the actuator's three saturation phenomena and system failure are investigated, and an analysis is conducted on the interactive mechanism between the saturation and the failure, and further, a new system model according to its characteristics is constructed. Secondly, based on this new model, the patterns of intrinsic variations are explored when the anti-saturation construction and adaptive fault-tolerant construction are combined, and further to find the quantitativ relationship between the actuator's fault tolerance and the domain of attraction, performance, and disturbance tolerance; The next consideration is on how to design the adaptive control strategy to estimate the failure information, and to synthesized regulate the fault-tolerant

英文关键词： Fault-tolerant control；Actuator faults；Actuator saturation；Flight control systems；