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提出了一种改进的Savitsky方法以提升游艇模拟器中运动数学模型的精度.建立三自由度游艇运动数学模型,对游艇排水状态下运动进行仿真.将游艇几何模型做棱柱形假设,采用改进Savitsky方法进行阻力计算,并进行船舶预滑行和滑行运动仿真试验.试验结果与模型试验结果进行对比,阻力计算结果与快速性试验结果精确度较高,船舶操纵性试验结果与传统方法基本一致.改进方法加入游艇模拟器后运行良好,结果准确.改进后的Savitsky方法可以有效提升游艇快速仿真精度,对游艇模拟器的研究具有一定意义.“,”An improved Savitsky method is proposed to increase the accuracy of mathematical model of yacht in fast simulation.Three degrees of freedom mathematical model is established to simulate the motion in displacement regime.warped hull forms of yachts are simplified into prismatic hull and improved Savitsky method is used to calculate resistance.The simulation is carried out in pre-planing regime and planing regime.The validity of the proposed method has been assessed by comparing results with previous experimental data,which shows good agreements.The improved method runs well and the result is accurate when it is added to the yacht simulator.The improved Savitsky method can effectively improve the fast simulation accuracy of the yacht,and has certain significance for the research of the yacht simulator.