NDLI: An analysis on the airship dynamic model linearization

Content Provider	Springer Nature Link
Author	Lin, Xianwu Lan, Weiyao
Copyright Year	2013
Abstract	The existing results on airship dynamic model linearization are usually achieved under the assumption that the airship trim state has a linear velocity with nonzero axial and normal components. This means that the direction of airship velocity is not coincident with the axis in the trim state and the deflection angles of the air rudders are different from their attack angles. However, these differences are not explicitly distinguished when calculating the air rudders’ aerodynamic force. In this paper, to build a more accurate airship dynamic model, aerodynamic forces and moments produced by the air rudders are deduced for the case that the direction of airship velocity is not coincident with the trim axis. A special trim state that all linear and angular velocities are zeros except axial and normal linear velocity, adopted by most research on airship dynamic model linearization, is selected to linearize the six degree airship dynamic model for simplicity and for comparison. Both the control forces of the propelling system and the air rudders are linearized to achieve more control inputs for the linear model. The extra control inputs provided by the propelling system can be used to stabilize the airship when the air rudders are invalid due to low speed of the airship or the constraint of air rudder mechanical strength. The nuance between the new linearized model and those deduced in the literature is discussed.
Starting Page	495
Ending Page	503
Page Count	9
File Format	PDF
ISSN	16726340
Journal	Journal of Control Theory and Applications
Volume Number	11
Issue Number	3
e-ISSN	19930623
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-07-04
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Airship Model Aerodynamic force Linearization Control Systems Theory, Control Optimization Computational Intelligence Complexity Control, Robotics, Mechatronics
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Computer Science Applications Hardware and Architecture

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