数学模型

This paper analyzes the process of depth charge intercepting torpedo, establishes a model of ship evading acoustic homing torpedo, and obtains the evasive turning angle as evading torpedo in different torpedo alert areas by using Monte-Carlo method.

本文分析了水面舰艇使用悬浮式深弹拦截鱼雷过程，建立了舰艇使用悬浮式深弹时规避声自导鱼雷数学模型，采用蒙特卡洛法通过计算机仿真，得出了在不同的鱼雷报警区域内舰艇规避鱼雷时的规避转向角。

The mathematical models, which are automatic program identification of the calibration results of data acquisition and lattice value calculation, are put forth.

6建立了数采标定结果的程序自动识别和格值计算的数学模型。

Based on ship's mathematic model of collision avoidance,we produce the optimal opportunity and action taken of collision avoidance,and obtain a graph of action-taking and a curve of the change of the course .

从数学模型出发，得出避碰行动曲线图和航向改变率随相对距离的变化曲线，给出确定船舶最佳避让行动与时机。

First of all, based on the aid of AIS (Automatic Identification System), which can give us the target ship's accurate data and will implement in 2002, we study own ship's relative motion to target vessels, define DCPA and its sign, give mathematic model of collision avoidance, produce the optimal opportunity and action taking of collision avoidance, and obtain a graph of action-taking.

论文首先在2002年将要开始实施的船舶自动识别系统所能提供的准确目标船信息的基础上，研究本船相对于目标船的运动，定义DCPA的大小和符号，推导出船舶避碰数学模型，给出船舶最佳避让行动与时机，得出避让行动曲线图，并且明确最佳避让行动时机不是某个点，而是一个时间段。

The principle of the actuator was analyzed and the mathematical model was set up.

在对驱动器结构进行分析的基础上，建立了工作台的数学模型。

The working principle of the actuator was analyzed, and a mathematic model of the mechanical system was set up.

对驱动器工作原理进行了分析研究，建立了机械系统的数学模型。

The mathematical model is set up by analyzing the principle of the actuator.

在分析微位移机构工作原理的基础上，建立了工作台的数学模型。

It does not rely on the precise mathematic model and has the ability of adaption and auto-study.

神经网络控制不依赖于精确的数学模型，具有自适应和自学习的能力。

Finally, by stepwise regression, impact toughness and tensile strength of ADI may be expressed as follows

最后采用逐步回归法，建立了冲击韧性和抗拉强度的数学模型如下

The adjoint variable method for design sensitivity analysis of multibody system dynamics based on ordinary differential equations is presented.

基于常微分方程数学模型建立了多体系统动力学设计灵敏度分析的伴随变量方法。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。