ObjectiveTo investigate the clinical effect of dynamic hip screw ( DHS) combined with continuous passive motion ( CPM) on intertrochanteric fractures in old patients. 目的探讨动力髋螺钉(DHS)结合持续性被动运动(CPM)治疗高龄股骨粗隆间骨折的疗效。
Research on Obstacle Clearing Capabilities of Pipe Inspection Robot with Screw Motion 螺旋轮式管道检测机器人越障性能研究
This algorithm uses screw theory to describe the motion of the robot. 这种算法使用旋量理论来描述机器人的运动。
Input motion screw and output motion screw are applied to represent design specification as well as kinematic behavior requirements. 通过输入运动旋量和输出运动旋量表达机构的运动行为要求和设计需求。
It is a new and simple and convenient method to derive the moment screw axis of the general motion of a rigid body. 这是推导螺旋轴方程的一种新的简便的方法。
In pipe micro robot based on screw motion wheels is suitable for moving and inspection inside small diameter pipes. 螺旋轮驱动的管内机器人是一种适合小口径管内移动作业的微小机器人形式。
Based on model of given feed drive dynamics, point to ball screw drive system and its motion differential equations, two fundamental steps in designing a sliding mode controller, that is the selections of a sliding surface and a Lyapunov function. 在给出进给传动动力学模型的基础上,针对滚珠丝杆传动系统及其运动微分方程,讨论了设计滑模控制器的2个主要步骤,即滑移面和李亚普诺夫函数的选择。
The paper describes a new type of transmission, i. e. engaged helical gear with internal trapezoid screw which can change angular motion into relatively fast axial motion. 提出了一种新的传动型式,即斜齿轮与梯形内螺纹啮合传动,可在短时间内把旋转运动转变为较大的轴向进给运动。
A helicoidal surface in Minkowski 3-space is defined as the orbit of a plane curve under a screw motion. 三维Minkowski空间中的螺旋面是一条平面曲线经由螺旋运动所生成的曲面。
The screw axis equation of the general motion of a rigid body has been derived by means of a comparison method. 本文用比拟法推得了刚体一般运动的螺旋轴方程。
The quenching machine tool will use frequency conversion speed-regulating motor, step-by-step motor or servo motor, and drive through ball lead screw, with motion speed being even and precise. 淬火机床的发展采用变频调速电机,步进电机或伺服电机,通过滚珠丝杆传动,移动速度均匀、精确。
On Micro Robot in Small Pipes Based on Screw Motion Wheels 螺旋轮驱动的细小管内移动机器人研究
Screw motion analysis of a robot and spatial mechanism 机器人及空间机构的螺旋运动分析
In order to realize the demand of three predetermined positions of the flap, we use the theory of kinematic geometry to dissolve its displacement and establish its construction by instantaneous screw motion. 实现襟翼在空间三予定位置的设计要求,运用运动几何原理分解其位移,通过瞬时螺旋运动来确定其运动机构。
The Analysis of Electromagnetic Field and the Design for solid Rotor Induction Motor with Screw Motion 螺旋运动实心转子异步力矩电机的电磁理论与设计问题
The electromagnetic field and electromagnetic force in a solid rotor induction motor with screw motion are discussed. 本文运用解析法对具有螺旋运动的铁磁体实芯转子异步电机的磁场和电磁力进行了分析。
Screws and Relative Screw Motion of Gears 螺旋和齿轮的相对螺旋运动
This paper deals with the analysis of electromagnetic field for solid rotor induction motor w(?) screw motion by the analytic method It gives an expression of the vector B 、 H 、 E 、 J and F in the rotor. 本文运用解析法分析了螺旋运动实心转子异步电机的电磁场,求出了在转子中各点的B、H、E、J和F的表达式。
In order to solve the robot inverse kinematics in screw theory, the motion equation is usually divided into several sub-problems. 旋量理论在机器人运动学逆解过程中将运动方程分解为若干子问题,目前常见的子问题组合并不能完成所有机器人的逆解问题。
On the graphic calculation of the instantaneous screw motion of the flap 襟翼三予定位置瞬时螺旋运动的图解及解析计算
Field Analysis on Solid-Rotor Induction Motor with Screw Motion 具有螺旋运动的铁磁体实芯转子异步电动机的磁场分析
The application of ball screw and linear motion guide in measurement 滚珠丝杠与直线滚动导轨在测量中的应用
Spatial motion of a rigid body can be seen as a screw motion of the body along a specific axis. 任一刚体的空间运动都可以视为沿某一轴线作螺旋运动。
The screw motion equation presented is also suitable for closed chains, i. e. spatial mechanisms. 文中提出的螺旋运动方程对闭式运动链,即空间机构同样适用。
Modeling and Analysis of Micro Screw Motion In-pipe Robot 微小型螺旋驱动管道机器人建模与分析
The Analysis of Screw Envelop Motion with Variable Pitch 变导程螺旋包络运动分析
By using screw theory the singular reason of motion simulator, and the Jacobian matrix was obtained. The ability of torque transmission is analyzed by using the index of Condition number. 运用螺旋理论阐述模拟器奇异问题产生的原因,并在该理论基础上构造雅克比矩阵作为模拟器奇异判断的数学条件;利用条件数对模拟器的力矩传递性能进行了分析。
Experimental results show that the screw coupling compensation improves motion stability as well as accuracy. Besides, it decreases the dither amplitude and prolonging service life of Tank Simulator. 实验结果表明,该螺旋耦合补偿提高了坦克模拟器运动的平稳性和准确性,降低抖动幅度,延长使用寿命,为模拟器的运动控制进行了有益的探索。
In order to improve the control accuracy, use high-precision rolling screw, encoders, and motion controller, to form closed-loop control circuit, realized the three coordinates ( X, Y, Z) micro-feed and digital speed control. 为了提高控制精度,采用高精度的滚动丝杠,并利用编码器、运动控制器、驱动器形成闭环控制回路,实现三个坐标X、Y、Z的微量进给,并可实现数字调速。
The mechanism that servo motor driving ball screw for variable rectilinear motion has been widely used, but due to friction, stiffness, inertia and transmission interval and other factors, the speed of high-precision tracking and location targeting is still one of the principal studies. 伺服电机驱动滚珠丝杠进行直线运动的机构已得到广泛的应用,由于摩擦、刚度、惯量和传动间隙等因素的影响,高精度的速度跟踪和位置定位仍是重点研究方向之一。