Design of steering control system maintaining ship's rotation in strong wind (Servo type generalized minimum variance control with adjusting wind effect)

A ship is turned by steering. Then the ship is turned with constant angular velocity against the steering angle. However, the turning angular velocity is varied by blowing strong wind. A steering control system is designed to keep the constant turning angular velocity in the strong wind. First, the...

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Bibliographic Details
Published inKikai Gakkai ronbunshū = Transactions of the Japan Society of Mechanical Engineers Vol. 81; no. 824; p. 14-00506
Main Author DOI, Masayoshi
Format Journal Article
LanguageJapanese
English
Published The Japan Society of Mechanical Engineers 01.01.2015
Subjects
Angular velocity
Constants
Control systems
Modeling
Predictive control
Servo control
Ships
Steering
Steering control
Turning
Variance
Wind effect
Wind effects
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Summary:A ship is turned by steering. Then the ship is turned with constant angular velocity against the steering angle. However, the turning angular velocity is varied by blowing strong wind. A steering control system is designed to keep the constant turning angular velocity in the strong wind. First, the variation of the turning angular velocity is verified in regard of the strength and the direction of wind. Second, the ship's maneuverability is identified, which is expressed as Auto-Regressive eXogeneous (ARX) model, by each steering angle. Then the angular velocity of turning is controlled by applying Generalized Minimum Variance Control (GMVC) as one of predictive controls. Finally, the servo type GMVC is arranged with adjusting the wind's effect.
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ISSN:2187-9761
2187-9761
DOI:10.1299/transjsme.14-00506