Three-channel control and dynamic characteristics simulation for rectilinear motion trajectory of supercavitating underwater vehicle

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (4) : 30-33,4.

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Three-channel control and dynamic characteristics simulation for rectilinear motion trajectory of supercavitating underwater vehicle

LI Yu-tian, ZHANG Yu-wen, LI Dai-jin

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Abstract

When an underwater vehicle runs supercavitated in rectilinear motion, its motion characteristics are different from those of a usual fully wetted vehicle. In order to keep the trajectory stability, the special control is adopted for three-channel control about vertical plane、horizontal plane and roll of supercavitating vehicle. This paper analyzed the hydrodynamic characteristics of supercavitating vehicle based on the hydrodynamic mechanism, and established a three-channel space motion model. A control measure of three-channel of rectilinear motion trajectory adopting the bow rudder of cavitator and the tail rudder of vehicle was put forward, and the coupling of three-channel was reduced by using the “bang-bang” rudder operating. The dynamic characteristics of three-channel trajectory were simulated, analysis results show that the course of trajectory was stability; the deviation of depth was small and the oscillation range of roll was controllable

Key words

supercavitating underwear vehicle / rectilinear motion trajectory / three- channel control / dynamic characteristics simulation

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LI Yu-tian;ZHANG Yu-wen;LI Dai-jin. Three-channel control and dynamic characteristics simulation for rectilinear motion trajectory of supercavitating underwater vehicle[J]. Journal of Vibration and Shock, 2012, 31(4): 30-33,4