在船舶靠泊操纵仿真中，由于船舶不能视为质点运动，因此船岸距离的计算不能简单地归结为点线距离，而应该用多边形间距方法进行计算。
Vessel can not be regarded as particle while vessel is berthing, so distance of vessel and shoreline is not distance of point and line, it should be calculated as space between polygon and line.
文章根据船舶运动方程，应用现代控制理论的方法，推出自动舵pd参数的自适应算法，为计算机仿真提供了可能。
In this paper, the author reckons PD parameter's self-adaption calculation with modern control-theory by Marine motion equation. This provides possibility for simulating by computer.
而试验摇摆台是用于仿真船舶在波浪作用下的运动的一种模拟装置，为减摇水舱性能试验提供船舶运动模拟平台。
Test rolling table is an analogue equipment, which simulates the motions of a ship disturbed by the wave force, and it serves as the simulating bench for performance testing of the anti-rolling tank.
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