In this paper,a fully-actuated system approach(FASA)based control method is proposed for rigid spacecraft attitude tracking with actuator saturation.First,a second-order fully-actuated form of spacecraft attitude erro...In this paper,a fully-actuated system approach(FASA)based control method is proposed for rigid spacecraft attitude tracking with actuator saturation.First,a second-order fully-actuated form of spacecraft attitude error model is established by modified Rodrigues parameters(MRPs).The unknown total disturbance caused by inertial uncertainty and external disturbance is estimated by using extended state observer,then an FASA based controller is developed.Further,a control parameterization method is adopted to optimize the parameter matrices of FASA based controller with the actuator saturation.Finally,a numerical example is carried out to validate the effectiveness of the proposed scheme.展开更多
This paper utilizes the high-order fully actuated(HOFA)system approach to synthesize a class of nonlinear systems.First,the original nonlinear system can be rewritten in a quasi-linear form,which is more general than ...This paper utilizes the high-order fully actuated(HOFA)system approach to synthesize a class of nonlinear systems.First,the original nonlinear system can be rewritten in a quasi-linear form,which is more general than other nonlinear systems,such as strict-feedback systems.Based on a rank condition,the quasi-linear system can be transformed into a canonical form.Second,a simple transformation is adopted to convert the above canonical form into the HOFA model.Once an HOFA model is derived,the authors design a controller to make the closed-loop system a constant linear system with the desired eigenstructure.Finally,a numerical example illustrates the fitness and effectiveness of the proposed approach.展开更多
基金This research was supported by the National Natural Science Foundation of China under Grant No.61903312Huiyan Project for Research on Innovation and Application of Space Science and Technology under Grant No.CD2B65B6.
文摘In this paper,a fully-actuated system approach(FASA)based control method is proposed for rigid spacecraft attitude tracking with actuator saturation.First,a second-order fully-actuated form of spacecraft attitude error model is established by modified Rodrigues parameters(MRPs).The unknown total disturbance caused by inertial uncertainty and external disturbance is estimated by using extended state observer,then an FASA based controller is developed.Further,a control parameterization method is adopted to optimize the parameter matrices of FASA based controller with the actuator saturation.Finally,a numerical example is carried out to validate the effectiveness of the proposed scheme.
基金This research was supported by the Major Program of National Natural Science Foundation of China under Grant Nos.61690210 and 61690212the National Natural Science Foundation of China under Grant No.61333003also by the Science Center Program of the National Natural Science Foundation of China under Grant No.62188101.
文摘This paper utilizes the high-order fully actuated(HOFA)system approach to synthesize a class of nonlinear systems.First,the original nonlinear system can be rewritten in a quasi-linear form,which is more general than other nonlinear systems,such as strict-feedback systems.Based on a rank condition,the quasi-linear system can be transformed into a canonical form.Second,a simple transformation is adopted to convert the above canonical form into the HOFA model.Once an HOFA model is derived,the authors design a controller to make the closed-loop system a constant linear system with the desired eigenstructure.Finally,a numerical example illustrates the fitness and effectiveness of the proposed approach.
