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Impact angle constrained fuzzy adaptive fault tolerant IGC method for Ski-to-Turn missiles with unsteady aerodynamics and multiple disturbances

查看全文 作　　者：GUO [1]Hang;WANG [1]Zheng;FU [2]Bin;CHEN [2]Kang;FU [2]Wenxing;YAN [1]Jie 高影响力作者 机构地区：[1]Research Center for Unmanned System Strategy Development,Northwestern Polytechnical University,Xi’an 710072,China;[2]Unmanned System Research Institute,Northwestern Polytechnical University,Xi’an 710072,China高影响力机构 出　　处：《Journal of Systems Engineering and Electronics》索引2022年第33卷第5期,共17页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(62003264). 摘　　要：An impact angle constrained fuzzy adaptive fault tolerant integrated guidance and control method for Ski-to-Turn(STT)missiles subject to unsteady aerodynamics and multiple disturbances is proposed.Unsteady aerodynamics appears when flight vehicles are in a transonic state or confronted with unstable airflow.Meanwhile,actuator failures and multisource model uncertainties are introduced.However,the boundaries of these multisource uncertainties are assumed unknown.The target is assumed to execute high maneuver movement which is unknown to the missile.Furthermore,impact angle constraint puts forward higher requirements for the interception accuracy of the integrated guidance and control(IGC)method.The impact angle constraint and the precise interception are established as the object of the IGC method.Then,the boundaries of the lumped disturbances are estimated,and several fuzzy logic systems are introduced to compensate the unknown nonlinearities and uncertainties.Next,a series of adaptive laws are developed so that the undesirable effects arising from unsteady aerodynamics,actuator failures and unknown uncertainties could be suppressed.Consequently,an impact angle constrained fuzzy adaptive fault tolerant IGC method with three loops is constructed and a perfect hit-to-kill interception with specified impact angle can be implemented.Eventually,the numerical simulations are conducted to verify the effectiveness and superiority of the proposed method. 关 键 词：integrated guidance and control(IGC) impact angle constraint unsteady aerodynamics fault tolerant control(FTC) actuator failures
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