为有力支撑船舶推进系统的优化改进，预测系统稳态特性，建立柴油机、齿轮箱、轴系、调距桨等子系统的数学模型，并在Simulink软件平台上搭建推进系统仿真模型。利用船模试验结果验证仿真模型的准确性，基于典型设计工况下的系统控制参数对稳态特性进行计算，分析了船、机、桨匹配参数对船舶动力性和经济性指标的影响。结果表明：当螺距比一定时，随着主机转速的增大，全船航速随之呈现增大趋势；当主机转速一定时，随着螺距比减小，全船航速变得越来越小；合理选取主机转速和螺旋桨螺距比时，可以实现船舶的最大航速。
In order to support the optimization and improvement of the ship propulsion system effectively, reduce the risk of development and predict the steady state characteristics of the system, the mathematical models of the subsystems such as diesel engine, gear box, shaft system and pitch propeller were established, and the simulation model of propulsion system was established on the platform of Simulink. The accuracy of the simulation model was verified by the results of the ship model test, and the steady state characteristics were calculated based on the system control parameters under typical design conditions. The influence of matching parameters of ship, engine and propeller on the power and economy of ship was analyzed. The results show that when the pitch ratio is fixed, the whole ship speed increases with the increase of diesel engine speed. When the speed of diesel engine is constant, with the decrease of pitch ratio, the whole ship speed becomes smaller and smaller. When diesel engine speed and propeller pitch ratio are reasonably selected, the maximum ship speed can be realized.
2019,41(2): 75-79 收稿日期：2018-03-29
DOI：10.3404/j.issn.1672-7649.2019.02.015
分类号：U661.3
作者简介：刘琦(1988-),男,博士,工程师,主要从事动力机械及热力系统设计、仿真与优化研究
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