舰船主体结构流体冲击响应主动控制方法和分析

本文以探索性的方式提出了一种有效降低高速舰船主体结构流体冲击瞬态响应的主动最优控制方法，讨论了最优控制原理、观测器和作动器的设计，建立了一套舰船主体结构流体冲击瞬态响应控制仿真系统。通过对一艘实船的仿真分析给出了一些有理论和实际意义的结论。

ACTIVE CONTROL METHODOLOGY AND ANALYSIS OF SHIP PRIMARY STRUCTURE RESPONSES UNDER SEVERE FLUID IMPACT PRESSURE

The primary hulls of high-speed vehicles usually suffer severe transient responses due to fluid impacts such as bottom slamming, deck wetting, etc., under rough seas. Some ships are left vibrating significantly for comparatively long periods of time after one of these impacts. The fore deck structures may buckle to damage and the hulls fatigue as a result of the shock loading, which may well cause shipwreck events. There are some limitations in improving the structural design itself traditionally. In order to improve the travel properties of high-speed vehicles under rough seas and prevent structural damages effectively from the fluid impacts, the paper puts forward an active control method and discusses the optimum control principles, design methods of actuator and observer. A set of simulation system SIMUSHIP for actively controlling ship primary structural responses is constructed. Some conclusions presented are of theoretical and practical significance based on the simulations of a full-scale ship.