基于空泡记忆效应的水下超空泡航行体建模与控制
MODELING AND CONTROL OF UNDERWATER SUPERCAVITATING VEHICLE BASEd ON MEMORY EFFECT OF CAVITY
In order to explore dynamics modeling and control of supercavitating vehicles, the memory effect of the cavity and its influence on shape of cavity were discussed based on the principle of cavity expansion independence. The cavitator orientation effect and cavity floatation were taken into account in computing the hydrodynamic forces of all parts of the supercavitating vehicle. Efficiency of the fin as the fin immersion depth changes while the vehicle is traveling underwater was investigated. A more precise nonlinear dynamics model of supercavitating vehicle was established. Robust pole placement controller was designed after exact input-output linearization. Simulation results indicate that stabilization control of the close-loop system with special initial disturbance is achieved.
超空泡 / 记忆效应 / 超空泡航行体 / 滑行力 / 非线性系统 {{custom_keyword}} /
supercavitation / memory effect / supercavitating vehicles / planing force / nonlinear systems {{custom_keyword}} /
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