submarine depth and rolling control near the water surface is a kind of nonlinearity control problem. the change of submarine mass, speed and ocean wave make it difficult to design of control system.

1、

comparing the service economy of the optimum and conventional trim condition, it can be seen that the average fuel saving of about 2.55 tons per day can be obtained for the optimum trim voyage.

通过对最佳纵倾与常用纵倾装载航行的营运经济进行分析比较可知，在最佳纵倾航行时平均每天可节油2.55t左右。

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2、

the stability of ship without trimming in all process of the transverse inclination is discussed, i.e.the centre of buoyancy is shifted only in a body plane.

论述了船舶在整个横倾过程中不发生纵倾，浮心只在船体剖面内作二维移动时的稳性。

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3、

through using the technology of high-low pressures and excessive-damping driving, the problems were solved for precision position adjustment of the swing axles in a three-freedoms swing-table.

通过采用高低压回路和过阻尼驱动技术，解决了某一旋臂水池三自由度转盘机构横倾轴、纵倾轴零位准确定位及偏航轴精确位置调整等问题。

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4、

both results show its effectiveness. the controller also played an important role in other experiment items such as automatic tracking of underwater pipelines and dynamic positioning.

设计的纵倾控制系统同时在其他试验项目中（水下管线跟踪和动力定位）发挥了重要的作用。

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5、

the thesis makes a main study of submarines 'depth and pitch control in vertical plane and researches on submarines' equilibria control performance.

本文将主要研究潜艇垂直面的深度和纵倾的控制，从而进一步研究潜艇的均衡控制性能。

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6、

without considering gravity wave effect, the formula of calculating the dynamic water pressure during the ship chamber longitudinal dip motion has been derived.

在不考虑重力波的情况下，导出了承船厢作纵倾运动时的水动压力计算公式；

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7、

trim moment of the moving boat was measured during the test, which provides a basis for the control of the boat.

试验测定了船模的运动纵倾力矩，为实船控制提供了依据。

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8、

ballast water is the water and suspended matter used to control the ship heels, trim, draft, stability or stress.

船舶压载水是指控制船舶横倾、纵倾、吃水、稳性或应力而加装到船上的水及悬浮物质。

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9、

during the process of calculation and analysis, the effects of different trims to the damaged stability results are presented.

在对此例船的分析过程中，对不同纵倾对概率破舱稳性计算结果的影响做了详细的研究。

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10、

in addition, the longitudinal moments of bare body in still water and model with horizontal fin are measured.

并分别测量了静水中光体和安装水平鳍的船模纵倾力矩。

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11、

trimming correction is a way of using the area integral or simpson to calculate the volume correction value.

纵倾修正是根据船舶首尾吃水差采用面积积分或复合辛普生方法近似计算体积修正量。

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12、

steering autopilot in lateral plane and pitch control in vertical plane are both designed with variable structure control.

采用变结构控制分别设计了水平面航向控制，垂直面的纵倾控制。

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13、

the experimental investigation on influence of original trim upon resistance for high speed displacement hull forms

高速排水型艇的初始纵倾对阻力影响的试验研究

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14、

a kind of non-negligible trim change

一种不可忽视的纵倾变化

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15、

the degaussing current equations related to the ship heading, pitching and rolling are deduced.

推导出舰船消磁系统电流在任意航向上有纵倾和横摇时的变化关系；

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16、

change of displacement per inch trim

每英寸纵倾排水量变化

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17、

a method of roughly calculating ship's gm on an uneven keel at trimming state

船舶在纵倾状态下稳性的粗略计算法

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18、

curve of moment to change trim one inch

每英寸纵倾力矩曲线

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19、

computation of floating state of ship and its initial stability in large trim condition

大纵倾下船舶浮态及初稳性计算

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20、

a calculation method of stability for a trimmed vessel

纵倾船舶的稳性计算方法

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