搜索结果: 1-15 共查到“A kinematic analysis”相关记录15条 . 查询时间(0.046 秒)
A Kinematic Analysis of the Jumping Front-Leg Axe-Kick in Taekwondo
Biomechanics motion analysis martial arts timing kicking velocity joint angle
2016/3/11
The jumping front-leg axe-kick is a valid attacking and counterattacking technique in Taekwondo competition (Streif, 1993). Yet, the existing literature on this technique is sparse (Kloiber et al., 20...
Comparative Kinematic Analysis of the Snatch Lifts in Elite Male Adolescent Weightlifters
Load of barbell junior weightlifters angular kinematic
2015/5/22
The purpose of the study was to compare the linear kinematics of the barbell and the angular kinematics of the lower limb during the snatch lifts of two different barbell weights in elite male adolesc...
Mechanisms for Triceps Surae Injury in High Performance Front Row Rugby Union Players: A Kinematic Analysis of Scrummaging Drills
Rugby athletes kinematics injuries
2015/5/14
The front row of a rugby union scrum consists of three players. The loose head prop, hooker and tight head prop. The objective of this study was to determine if known biomechanical risk factors for tr...
Kinematic Analysis of Line-Out Throwing in Elite International Rugby Union
Biomechanics movement analysis rugby union accuracy throwing
2015/5/7
The rugby union line-out is a key aspect of game play and involves players from both teams contesting for the ball after it has been thrown in from the side line. Successful lines-out throws require t...
黄瓜采摘机械臂结构优化与运动分析（Optimization Design and Kinematic Analysis of Cucumber-harvesting-robot Manipulator）
黄瓜 采摘机器人 机械臂 参数优化
2010/12/29
黄瓜采摘机器人在非结构环境中工作时，其机械臂的结构特点与运动精度将直接决定机器人作业范围和采摘成功率。针对黄瓜特定的栽培模式，结合机械臂工作空间及结构长度指标，运用参数优化法，对采摘机械臂构型和结构参数进行了优化设计。建立了机械臂运动D-H模型，实现由关节空间向笛卡尔空间的正逆变换，并确定了机械臂速度雅可比矩阵；应用三次多项式插值法，建立了机械臂关节空间运动规划模型；应用Matlab平台对优化参数...
前插式直齿双控制分插机构设计与运动分析(Design and Kinematic Analysis of Double Controlled Forward Transplanting Mechanism with Spur Gears)
高速插秧机 分插机构 运动学分析
2010/12/28
阐述了水稻高速插秧机前插式直齿双控制分插机构设计方法和工作原理，建立了机构的运动学分析模型，使用ADAMS软件对该机构的运动进行了优化和仿真,获得了分插机构的运动轨迹和运动特性曲线。结果表明该机构能够实现插秧时秧爪所需的主要运动学目标。
A kinematic analysis of uterine deformation during labor
A kinematic analysis uterine deformation labor
2010/1/7
A kinematic analysis of uterine deformation during labor.
偏心链轮传动机构的运动学分析及参数优化（Kinematic Analysis and Parameter Optimization of Eccentric Sprockets Transmission Mechanism）
链传动 偏心链轮 运动学分析
2009/12/28
针对偏心链轮传动机构工作过程中链条松紧变化大的问题设计了偏心张紧轮。通过优化张紧轮的转动中心位置、偏心量和初始角位移，使链条在周期中始终处于张紧状态。利用微分对该传动机构进行了运动学分析，列出了主、从链轮角位移关系的求解方程，并以此为基础，进行了传动系统的运动学分析和张紧轮的轮心坐标、初始相位角和偏心量的优化计算，其目标是在周期中使链条松紧波动最小。列出了优化实例，在优化过程中考虑了链节长度的非连...
Kinematic analysis of postural changes in bipedal stance at application of stimulus from external environment and modifi cation of visual scene in patients with anterior cruciate ligament reconstruction
Anterior cruciate ligament (ACL) proprioception visual modified scene 3D videography
2009/12/25
Tears and rupture of the anterior cruciate ligament (ACL), which has an important function in knee joint stability, are very common and more so in sports. ACL injury can be managed in two ways. One al...
基于构件元的平面连杆机构运动分析自动建模方法（Automated Modeling for Kinematic Analysis of Planar Linkages Based on Link Units）
平面连杆机构 运动分析 构件元 计算机建模
2010/2/26
分析了封闭环矢量运动分析法，提出了3个构件元概念：构件矢量元、雅可比元和雅可比速度元。由于构件元只与构件本身形态有关，可以非常方便地结合到构件的绘图程序中，通过引入有效因子，也可以很方便地组合成整个机构的雅可比矩阵和雅可比速度矩阵，从而得到了一种运动分析自动建模新方法。讨论了复杂平面机构封闭环的通用分析方法和利用构件元自动建模与运动分析的步骤。编程实验及实际程序测试表明，本方法具有极强的模块性，对...
Quality Control Procedure for Kinematic Analysis of Elite Seated Shot-Putters During World-Class Events
Quality Control Procedure Shot-Putters Kinematic Analysis
2009/9/3
Kinematic analyses of elite shot-put throwers commonly involve shot-trajectory parameters determined under experimental conditions with an accuracy-based procedure. This can be only partially implemen...
Three-Dimensional Kinematic Analysis During Level and Downhill Treadmill Running, Using a Polynomial Method（图）
Kinematic Analysis Three-Dimensional Treadmill Running Polynomial Method
2009/9/2
Accurate kinematic analysis of human movement is a significant factor
for the improvement of movement performance and for the reduction of injuries.
A polynomial method for 3-D analysis was implemen...
Sampling factors influencing accuracy of sperm kinematic analysis
Sampling factors sperm kinematic analysis
2009/2/12
Sampling conditions that influence the accuracy of experimental measurement of sperm head kinematics were studied by computer simulation methods. Several archetypal sperm trajectories were studied...
Kinematic Analysis of the Sewing Mechanisms of an Overedge Machine
overedge sewing machine spatial mechanism
2009/2/11
A computer analysis of the motion of the spatial links of lever mechanisms has been carried out. This analysis has been presented as an example of some selected mechanisms of one version of basic desi...
Kinematic analysis of the Pakuashan fault tip fold, west central Taiwan: Shortening rate and age of folding inception
Kinematic analysis Pakuashan fault tip fold, west central Taiwan Shortening rate age of folding inception
2014/4/15
The Pakuashan anticline is an active fault tip fold that constitutes the frontal most zone of deformation along the western piedmont of the Taiwan Range. Assessing seismic hazards associated with this...