5 ) sea trial of the actual vessel . as a result , the effect of power - saving for the hd type ' s 70 , 000 deadweight panamax oil thaker is much higher , the performance of hd propeller is better than mau propeller and the cooperation among the hull , main engine and propeller is better too 试验结果表明：沪东型七万吨级巴拿马油轮的综合节能效果显著；沪东型（ hd ）螺旋桨效率较mau图谱桨性能优良；沪东型（ hd ）螺旋桨与船、机匹配，经实船航行试验验证船舶在满载状况下（ t 12
But this is not a problem for ship structure which is thin and good ductibility . the basic equation of statistical energy analysis is deduced in this paper , the shipboard noise of 295 , ooodwt vlcc is calculated based on sea , the factor effect on the noise of shipboard is discussed and some measurement to reduce the noise level is suggested 根据统计能量分析方法的基本原理，以实船为例进行了船舶机械设备等噪声声压水平的估算和船舶舱室噪声预示，并对影响船舶舱室噪声水平的各种因素进行了分析，提出了减小船舶舱室噪声水平的方法。
Afterwards , in order to analog more ships , the characters of tank ' s mechanical parts are given . at the same time , effects of variation of bob - weight mass and distance of slip pieces are researched . from the whole system , analysis of input signal , oil - source , electro - hydraulic servo valve , controllers , amplified circuits and so on is provided 然后，为了使水舱试验台架能模拟更多的实船，作者研究了水舱试验台架各个机械部分的特征，分析了配重质量变化和滑块距离变化对船舶特征参数的影响，后来从整个系统出发，对系统的输入信号、油源、电液伺服阀、控制器、驱动电路、执行结构等进行了理论研究和实际分析，以便能够对实验的现象作出解释。
The advantage and disadvantage of measurement of propeller - induced pressure by using different equipment is discussed . the method to obtain self - propulsion point for full scale in depressurized towing tank is studied . the measurements of pressure of two propeller models are carried out , the results of the measurement agree with those obtained by cavitation tunnel very well , which proves this measurement is successful , and the theoretical prediction is verified too 比较了不同测试设备用于螺旋桨脉动压力测试的优缺点，探讨了在减压拖曳水池中实现实船自航点的方法，并进行了两只螺旋桨模型的脉动压力测试，经与空泡水洞中脉动压力的测试结果进行比较，说明该项测试是成功的，同时也对脉动压力的理论预报结果做了验证。
There are different thrusts and torques corresponds to difference trailing edge cutting value at different advance coefficients . combined with the real hull ' s resistance and the real engine ' s power and revolution , the matching point between hull - propeller - engine and the value of trailing edge cutting can be calculated 在得到不同的进速、不同的切割量下螺旋桨的推力、转矩的情况下，结合实船的阻力和主机的功率、转速等资料就可以计算出使船?桨?机匹配的切割量。
In order to provide data reference for ships equipped with anti - rolling tank , based on the item the anti - rolling tank test equipments on the ship among the country 211 key construction projects , the paper goes on deep analysis and research on test platform of tank and motion of rolling and swaying 为了给实船装备减摇水舱提供数据参考，结合国家“ 211 ”工程重点投资建设项目“船舶减摇水舱试验装置”的研制工作，本课题对水舱试验台架及横摇、横荡运动进行了较深入的分析和研究。
To test the new autopilot performance , author designs a simulation program by matlab / simulink . in the simulation process , author makes comparisons among three systems - the pid autopilot , fuzzy control autopilot and the fuzzy self - turning pid parameters autopilot . in this stage , author gives some step signals to simulate heading orders given to three systems without any interruption 模糊控制所整定的两个参数论域无成熟例子的可以借鉴，本文提出基于实船设计的pid控制器的参数调整，使控制参数分布于一个正态曲线上，再适当扩大论域范围，作为设计整定对象的模糊控制论域。
On the base of similarity theory of fluid system , the similarity numbers are analyzed , and the similarity relationship between the original model and the analogue model is researched , and much experiment has been carried out . in order to get experiment data , a computer measure system has been developed , which is mainly made up of host computer ( pc ) and extension computer ( by scm mainly ) 本文在流体力学中流动体系的相似理论基础上，推导了流场的相似准数，分析了各相似准数在模型中的作用，得出了原型(试验台)的流动状态与实船的相似关系，并据此为理论依据在原型(试验台)上进行试验研究。
In order to resolve the problem of noise control on the spot , two aspects of problem are researched in this paper : 1 ) a brief introduction is given to " gray system theory " , which was firstly stated by professor deng julong in our country ; 2 ) the noise values , which are measured on the ships built by our company recently , are analyzed ; 3 ) with the differential equation gm ( 1 , 1 ) in " gray system theory " , according to the noise measurement values on many ships , dimension a , b and initial value x ( 1 ) ( 0 ) are defined , and the solution to the differential equation gm ( 1 , 1 ) is found 为了解决实船噪声控制的问题，本文主要对两方面的内容进行了研究： 1 )对“灰色系统理论”进行简单介绍； 2 )对我公司最近建造的部分船舶的噪声实船测量值进行分析； 3 )结合灰色理论中的gm ( 1 ， 1 )微分方程，根据广泛收集的噪声实船测量值，确定灰微分方程参数a ， b ，以及初始值x ~ ( ( 1 ) ) ( 0 ) ，确定gm ( 1 ， 1 )微分方程的解。
