查询词典 kinematics

Presents the mechanical design and kinematics analysis of a dextrous robot hand to develop multifunctional upper limb prosthesis.

介绍了一种灵巧机械手的设计和控制，这种机械手可以作为多功能的上肢假肢。

The robotic Denavit-Hartenberg theory was firstly introduced to describe the Tooling virtual assembly procedure. Then the Tooling assembly mathematical model was established based on the Denavit-Hartenberg inverse kinematics and virtual assembly space constraint relationships for describing the position of robots theory in 3-D space. And to solve the problem of length discontinuousness of standard parts, the position adjustment strategy for Tooling vacuum group was studied and presented.

首次引入机器人运动学Denavit-Hartenberg模型，基于反向运动学原理和虚拟装配的空间约束关系，建立了Tooling空间装配的数学模型，并根据Tooling装配所用标准件长度不连续的特点，进一步给出了Tooling吸盘组件的空间位置调整策略。

Secondly, the vector control theory,the kinematics model and the sinusoidal space vector Pulse-Width-Modulation control technology were analyzed dividually, and then the mathematic simulation model of the servo system of PMSLM was built.

其次，综合运用电机控制理论和计算机仿真技术，分别对永磁同步直线电机的矢量控制原理、运动力学模型以及电压空间矢量脉宽调制技术进行分析，搭建了永磁同步直线电机伺服控制系统的数学模型。

Because it is not practical to use numerical ephemerides with a large volume of data to describe the kinematics of component stars...

借助已有的观测资料和拟合研究结果，给出了6个等级三星系统的质量参数和初始条件，进而根据实用需求讨论了这些系统的运动学描述问题。

And the mathematical model for analyzing the kinematics of the closed epicyclic gear trains is established by means or transmitting matrix as well.

通过一些计算实例验证本文所提出的离散变量的处理方法是简单可行的，并且其程序设计也非常简单。

For the submunition ejection pattern predet ermined time and order, based on the kinematics equations for ejection schedulin g of submunition and the concept of submunition ejecting sequence, the influence of ejection scheduling of submunition on the attitude of airborne dispenser is analyzed.

针对子弹药定序抛撒方式，在建立子弹药时序抛撒动力学方程的基础上，基于子弹药定序抛撒时序序列的概念，研究分析了抛撒过程中子弹药抛撒时序变化对布撒器姿态的影响，进而提出了对子弹药时序抛撒系统设计的初步要求，可为机载布撒器子弹药抛撒系统设计提供参

In the field of spaceborne remote sensing, a geometric collinearity equation of pushbroom sensor with the Kepler parameters of the satellite orbit and the attitudes of sensor has been developed. Testing the sensor model on a SPOT-5 imagery, the planimetric accuracy of object positioning is 83.392m on the ground. According to the orbital dynamical model and the kinematics model of satellite attitude, an algorithm of extrapolative location is developed. Testing the algorithm on CBERS-2 high resolution satellite imageries of central China, when the depth of extrapolation is 300km, the planimetric precision is 53.555m including the measurement errors as well as the modeling error over than the 568m which is the planimetric precision of systematic rectification.

航天遥感方面，利用6个卫星轨道开普勒参数和3个传感器姿态建立了推扫式卫星遥感影像的严格构像方程，经对一景SPOT-5影像实施无地面控制对地目标定位获得了83.392m的平面精度；根据遥感卫星的运动规律，提出了卫星轨道参数、传感器姿态和扫描侧视角的外推算法，用于资源二号卫星影像的外推对地目标定位，当外推深度达300km时，目标定位精度不低于50m。

The fourth chapter talks about the weft carrier, in this part, we mostly introduce the big gripper shuttle in the comparative way and not only analyze the structure but also analyze the stress of the fatigable parts. In the fifth chapter, the shuttle box is our research emphasis, we start with the design principle and analyze its structure and the logic of the action of the parts. The sixth chapter discusses the shoot mechanism, builds its theory model and analyzes its law of motion from the view of kinematics and kinetics during the wefting. And then, we can consider the hydraulically shoot mechanism and comprehend its principle and some special parts. Subsequently, the content is about the flying of a shuttle, because the course of the flying of a shuttle is very complex, it is necessary to study the shuttle according to mechanics and to analyze its course of motion and its change of speed from the view of energy.

第五章谈的是梭箱，这部分从梭箱的设计原理入手，从结构的角度对梭箱进行分析，考虑到梭箱上各执行件间的动作存在一定的逻辑关系，还对执行件动作时间与控制作出论述，从中可以看出重型宽幅织机所独有的特性；第六章论述投梭机构，先构造出投梭机＿重型宽幅织机引纬机构与梭箱的设计＿构的弹性理论模型，从动力学的角度剖析投梭规律，随后分析液压式投梭的工作原－－理和一些特型元器件；第七章论述梭子的飞行运动，考虑到梭子飞行运动的复杂性，我们把梭子飞行运动划分为三个阶段，然后分阶段介绍其运动规律，在对梭子进行＿运动分析的同时还详细分析它的受力情况，在这一章的最后，我们对影响梭子飞行＿的因素也作出了讨论；顺沿这一过程，即是第八章对制梭机构的论述，在这一部分，、主要研究制梭过程与制梭力的情况，同梭子飞行过程一样，制梭过程也分为三个阶段，就每个阶段而言，我们都对其进行受力与运动方面分析，同时也就一些容易出现的问题作出讨论；最后两章是对纬纱交接机构和纬纱的退绕与张力控制作出讨＿论，鉴于这两部分不存在复杂的动力学方面的问题，论述重点便放在结构与原理的分析上面，包括分解纬纱交接机构，解析其动作过程，介绍储纬与纬纱张力的一些情况。

Secondly, kinematics of the frameless stereotactic surgical robot is analyzed with D-H notation.

其次对课题开发的无框架立体定向手术机器人进行了运动学分析。

Kinematics and geodynamic modeling of continental deformation, along with thermal-rheological structure of the continental lithosphere are all emphasized here for study in future.

所以，大陆动力学应注重开展大陆变形的运动学、大陆岩石圈的热－流变学结构和大陆变形的地球动力学数值模拟研究。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。