运动学

Supported by the National Natural Science Foundation, this dissertation mainly deals with bionics study on Thunniform swimmer, theoretical kinematics modeling and computer simulations, analyzes effects of elastic elements on propulsion efficiency, and experimentally studies a new type of underwater propulsor.

本文以国家自然科学基金项目"仿鱼鳍水下推进器的理论与实验研究"为背景，集中对鲹科加新月形尾鳍推进模式鱼类游动的仿生学研究、仿鱼水下推进器运动学建模与仿真、弹性组织在提高推进效率中的应用、及其相关的新型仿鱼水下推进器等方面进行理论与实验研究。

Through using the method of three-dimensional kinetic analysis, this paper makes research on the former eighth excellent athletes in the latter half of the 20kin walk of the race walking of the IAAF Challenge.

运用三维运动学分析方法，对参加国际田联竞走挑战赛女子20km比赛前8名运动员后半程中一个复步进行解析。

The radial rectilinear stretching motion is firstly analysed, and its condition is deduced. Then two planetary gear mechanisms are assembled to realize the motion. In addition, the kinematics and dynamics analysis of arm mechanism is done, which provide the theoretic basis for the selection of servomotor and for holding the good dynamics and static performance of the clean robot.

首先对其末端执行器的径向直线伸缩运动展开分析，得出了实现该运动的必要条件，并采用两组行星轮系与连杆机构的组合形式来实现末端执行器的运动，此外还对该机构进行了运动学和动力学分析，为电机的选择以及控制净化机器人的动态性能和静态特性提供理论基础。

Kinematics model of the suspension be reduced to truss structure, but as each bar is absolutely rigid, hinge point is also considered to be only a pure rotation without any deformation of rubber parts, such results have a certain margin of error.

运动学模型中把悬架简化成杆系结构，而各个杆件看成是绝对刚性的，铰点处也认为是只有纯转动而无任何橡胶件的变形，这样所得的结果就有一定的误差。

Redundant robots ; diffusion equation ; inverse kinematic map ; learning method

冗余机器人；扩散方程；运动学逆变换；学习算法

First, a new kind of redundantly restrained positioning systems with decoupling rotational degrees of freedom driven by 8 wires, is presented. And its kinematic modeling is set up.

首先提出一种8根绳牵引的转动自由度解耦的6自由度并联机构，并建立其运动学模型。

Then the kinematics and dynamics of the mechanism were improved so that the rapier loom work more reposefully and reliably.

利用它对运动机构进行了优化设计，提高了机构的运动学和动力学特性。

To offer the kinematics equation of bionic joint ,composed by spherical gear with ring involute teeth, is the aim of this paper.

建立了基于渐开线环形齿球齿轮的仿生关节机构的运动学模型。

On the basis of kinematics and geometry principle, a mathematical model for the crank rocker arm mechanism was established.

从运动学和几何学原理出发，建立了曲柄摇杆机构的数学模型，得出了工件中心点的瞬时速度和运动轨迹，并开发了相应的计算机动态仿真软件，以图形的形式显示了工件中心点运动轨迹曲线以及瞬时速度曲线。

The systems of machining complex curved surface by means of WEDM are classified to establish the main kinematics theories of machining complex curved surface by means of WEDM By analyzing various systems of machining complex curved surface by means of WEDM, the combination, characteristics, motion parameters and motion types of them are summarized And a model system of the is established according to the basic principles of the forming of ruled surface in spatial analytic geometry.

主要内容及取得的成果体现在以下几个方面：为了建立复杂曲面电火花线切割运动学的主要理论，本文对复杂曲面电火花线切割加工系统进行了分类，并分析总结出各种复杂曲面电火花线切割加工系统的组成、特点、运动参数及运动形式。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷