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	Coordination control strategy based on characteristic model for 3-bearing swivel duct nozzles
	WANG Xiang Yang ; ZHU Ji Hong ; YANG Jia Li ; LIU Kai ; WANG Xiang Yang ; ZHU Ji Hong ; YANG Jia Li ; LIU Kai
	2016-03-30 ; 2016-03-30
关键词	3-bearing swivel duct nozzle thrust vector coordination control characteristic model adaptive control dynamic control allocation TP273
其他题名	Coordination control strategy based on characteristic model for 3-bearing swivel duct nozzles
中文摘要	A coordination control strategy is developed for 3-bearing swivel duct(3BSD) nozzles. A 3BSD nozzle's deflection angle and direction are changed through rotations of three revolute pairs. There is a nonlinear relationship between the deflection angle/direction and the rotation angles. The rotation speed of a revolute pair is limited by the power of the actuator. The moment of inertia and the aerodynamic load for each revolute pair are different and time-varying. A high-precision control system of 3BSD nozzles is required for applications on vertical and/or short take-off and landing(V/STOL) aircrafts. Difficulties of coordination control of 3BSD nozzles are distinct travel ranges, speed constraints, time-varying dynamic models, and disturbances. The proposed control strategy is a combination of the characteristic model and the dynamic control allocation method. A dynamic control allocation module is used as the coordination supervisor, which is aware of the kinematic model, the constraints, and the dynamic models of the revolute pairs. Second-order characteristic models are used to represent the dynamic behavior of the revolute pairs. The gradient projection algorithm is modified for parameter estimation. A modified all-coefficient adaptive controller is developed to reject the disturbances. Experimental results of a scaled 3BSD nozzle indicate that the coordination control strategy is effective.; A coordination control strategy is developed for 3-bearing swivel duct(3BSD) nozzles. A 3BSD nozzle's deflection angle and direction are changed through rotations of three revolute pairs. There is a nonlinear relationship between the deflection angle/direction and the rotation angles. The rotation speed of a revolute pair is limited by the power of the actuator. The moment of inertia and the aerodynamic load for each revolute pair are different and time-varying. A high-precision control system of 3BSD nozzles is required for applications on vertical and/or short take-off and landing(V/STOL) aircrafts. Difficulties of coordination control of 3BSD nozzles are distinct travel ranges, speed constraints, time-varying dynamic models, and disturbances. The proposed control strategy is a combination of the characteristic model and the dynamic control allocation method. A dynamic control allocation module is used as the coordination supervisor, which is aware of the kinematic model, the constraints, and the dynamic models of the revolute pairs. Second-order characteristic models are used to represent the dynamic behavior of the revolute pairs. The gradient projection algorithm is modified for parameter estimation. A modified all-coefficient adaptive controller is developed to reject the disturbances. Experimental results of a scaled 3BSD nozzle indicate that the coordination control strategy is effective.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143763]
专题	清华大学
推荐引用方式 GB/T 7714	WANG Xiang Yang,ZHU Ji Hong,YANG Jia Li,et al. Coordination control strategy based on characteristic model for 3-bearing swivel duct nozzles[J],2016, 2016.
APA	WANG Xiang Yang.,ZHU Ji Hong.,YANG Jia Li.,LIU Kai.,WANG Xiang Yang.,...&LIU Kai.(2016).Coordination control strategy based on characteristic model for 3-bearing swivel duct nozzles..
MLA	WANG Xiang Yang,et al."Coordination control strategy based on characteristic model for 3-bearing swivel duct nozzles".(2016).

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