1) tension angle
拉角
1.
The emphasis is laid on the analysis of influence of tension angles and distance of hanging point and fulcrum on mechanical properties of cantilevered cable-stayed Vierendeel truss.
重点分析了拉角与吊距变化对悬臂空腹桁架的内力和变形的影响。
2) drawing mould corner
拉拔模角
3) chip pulling angle
拉屑角
1.
Based on the experiment, the influences of tool normal rake, chip pulling angle and chip pulling force on the shape and metallurgical structure of the fiber cross section are studied.
通过试验研究了刀具法向前角、拉屑力和拉屑角等对纤维横截面形状和金相组织的影响。
4) Euler angles
欧拉角
1.
In this paper, the physical singularity and computational singularity of Euler angles are investigated, then the problems encountered in defining the water-exit pose angles of the carrier areanalyzed, and anti Euler method is introduce.
研究了欧拉角定义的物理奇异性和欧拉方程求解的计算奇异性,分析了运载器垂直出水弹道姿态角定义面临的问题,提出用反欧拉法来定义和考核运载器出水弹道的姿态角。
2.
An extended Kalman filter algorithm has been developed for determining the three-axis stabilized satellite orbital attitude by Euler angles using the measurements from the typical attitude measurement system composed of vector observations and gyros.
针对“矢量观测+陀螺”这种典型的三轴稳定卫星姿态确定系统配置模式,采用欧拉角作为姿态参数,应用扩展卡尔曼滤波技术综合处理姿态测量信息,给出了具有良好滤波性能的轨道姿态估计算法。
3.
The reason why quaternion is used in flight simulation of fighter aircraft and the geometric meaning of quaternion are described,according to axis system used in flight simulation of fighter aircraft in China,three problems are introduced as follows:(1) quaternion kinematic equations,(2) relationship of quaternion and coordinate transformation matrix,(3) Euler angles in terms of quaternion.
阐述了在战斗机的飞行仿真中采用四元数的原因和四元数的几何意义，并按照中国战斗机飞行仿真中采用的坐标系，介绍了三个问题：四元数运动学方程；四元数与坐标变换矩阵的关系；用四元数表示的欧拉角。
5) registration angle
拽拉角
6) euler angle
欧拉角
1.
Dynamic modeling and analysis of the spherical robot based on Euler angles description;
基于欧拉角描述下的球形机器人动力学建模与分析
2.
The formula for calculating the attitude,based on three Euler angles,was induced.
结合自动化测量机器人的功能,提出基于测量机器人对盾构体(前体)上两点进行三维坐标测量;根据安装在盾构机机体上纵、横两个精密测倾仪,实时采集的盾构机俯仰角、滚动角,来确定盾构机的实时空间位置和水平方向的偏航角的方法;根据3个欧拉角描述姿态测量的原理,推导出其姿态计算方法,并给出姿态计算的程序实现流程。
3.
Direct cosine matrix,Euler angles and quaternions are the common methods for translating vector equations into scalar equations,singularities are discussed according to equations of kinematics and geometry graph of defining Euler angles in the paper.
方向余弦阵、欧拉角法和四元数法是将导弹运动的矢量式变换到标量形式的导弹运动方程组常用的方法,文中分别通过绕质心运动的方程组和欧拉角定义的几何图形分析了欧拉角出现奇异的情形。
补充资料：管材旋转模冷拔
管材旋转模冷拔
cold drawing of tube through revolving die
的主动旋转外模与顶头(或芯棒)之间拔制管材的工艺(见图)采用旋转模拉拔，拉拔的部分变形为滚轧所取代，滚珠或滚柱与管材接触表面之间为滚动摩擦。摩擦系数小，可以降低拔制力。这对薄壁管和低塑性材料的拉拔很有利。但是，旋转模冷拔管材存在以下的缺点:(1)旋转槽内滚珠或滚柱的咬入角较小(镇15。)，睿二瑙 滚珠式旋转模的结构及拔管过程 l一端支持环;2一安装在旋转支持器内的模套; 3一管材;4一芯棒guaneai xuanzhuanmu lengba管材旋转模冷拔(eold arawing of:ub。thro-u只h revolving die)室温下在装有滚珠或渡杜使得每转的减壁量不能取大，一般小于滚珠或滚柱直径的2%;(2)为防止管体表面出现螺旋线，旋转模每转动一次管材的轴向送进量必须很小，对于滚珠组装的旋转模，约为管材周长的2%一4%;(3)模内相互接触的滚珠或滚柱体之间以及它们与模套之间摩擦能耗的比重也很大。由于上述原因，旋转模冷拔管材未能在大生产中广泛应用。 (周忠民)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条