In his theory of general relativity, Einstein realized that space and time can stretch and warp in ways that change the trajectory of light.
爱因斯坦在他的广义相对论中认识到,可以以改变光轨迹的方式对时间和空间进行拉伸和弯曲。
November 13,1971, The American space probe, Mariner 9, has become the first spacecraft to orbit another planet, swinging into its planned trajectory around Mars without a hitch.
1971年的11月13日,美国宇宙飞船水手九号顺利进入火星的计划轨道飞行,成为首架环绕另一颗行星飞行的宇宙飞船。
Wheeling about to line up on a northeasterly trajectory, Atlantis accelerated through a partly cloudy sky, on course for a docking with the space station around noon Wednesday.
亚特兰蒂斯号沿着向东北方向的轨迹,加速飞入多云的天空,沿着预订轨道在星期三下午与国际空间站对接。
Whatever bumps along the trajectory there may be, I am confident that NASA’s support for commercial companies will prove to be critical to humanity’s future in space.
无论一路走来要历经多少坎坷,我都坚信美国宇航局给予商业公司的支持将证实对人类太空[探索]前景至为关键。
By using the line of sight (LOS) measurements from space based infrared sensors, free flight phase trajectory estimation problem of ballistic missile is studied.
主要研究空间预警系统利用星载红外传感器的视线测量估计弹道导弹自由飞行段弹道的问题。
In the fifth and sixth chapter, trajectory tracking control in inertia space of the dual-arm space robot system is studied.
在第五章和第六章中,对双臂空间机器人系统在惯性坐标系内进行轨迹跟踪控制问题进行研究。
The trajectory planning of robot can be done in joint space coordinate and Cartesian space coordinate.
机器人的轨迹规划可以在关节空间中进行,也可以在直角坐标空间中进行。
This paper applies the technique of constrained trajectory propagation and optimal theory to design the autolanding trajectory for a space shuttle.
采用沿约束轨迹的推演计算方法及优化原理对航天飞机自动着陆飞行轨迹进行优化设计。
The task space trajectory planning for robots is reviewed and analyzed based on the geometric structure of task space.
本文从机器人任务空间的几何结构出发,对任务空间轨迹规划进行了总结。
A particularly crooked place in a wellbore where the trajectory of the wellbore in three-dimensional space changes rapidly.
井眼中特别弯曲的地方,该处三维空间内井眼的轨迹变化很快。
According to the design and analysis of global intercept trajectory, the possibility of straightly impacting space target is verified, and the terminal guidance is analysed and calculated.
通过全程拦截弹道的设计与计算,验证了与空间目标直接碰撞的可能性,对末制导做了分析与计算。
When the energy is increased to the saddle point energy, nearly all the phase space trajectory is chaotic.
当能量增加到鞍点能时,几乎所有的相空间轨迹都是混沌的。
Eventually it adopts cosine function for discrete interpolation in the inertial space trajectory planning.
最终以余弦函数对惯性空间的规划轨迹进行插值离散。
Based on analysis positive and reversal motion of KLD-600 robot, planning of trajectory is analyzed in detail by the method of joint space and the basic model of the control program is created.
在对KLD- 600机器人的正逆运动学分析的基础上,采用关节空间法分析了轨迹规划,建立了控制程序基础模型。
In the first stage, trajectory planning is performed on image plane. Planned discrete points on image plane are then mapped to robotic joint space.
第一阶段在图像平面上规划运动轨迹,在图像平面上得到的离散规划点映射到机器人关节空间。
Under the usual coordinates, the paper conclude mathematical model in space motion and design project ballistic trajectory.
在常用坐标系下,推导了空间运动的数学模型,设计了方案飞行弹道。
A new approach for estimating the vector parameters of the target is presented, which is based on the extraction of the target motion trajectory in space.
提出了一种基于空间目标运动轨迹提取的矢量脱靶量参数估计新方法。
In this model, the inputs were firing rates of neurons, and the outputs of model were hand trajectory in space.
该模型以运动过程中的脑皮层神经元集合信号为输入,将光标的空间运动轨迹作为输出。
The 3-d space robot collision-free trajectory planning problem, by means of geometry-graphics method in 2-d space, is resolved.
借鉴二维空间的几何图形法解决了三维空间机器人无碰撞轨迹规划问题。
A new approach for estimating the vector miss distance parameters of the target is presented, which based on the extraction of the target motion trajectory in space.
提出一种基于目标空间运动轨迹提取的矢量脱靶量参数估计新方法。
With earth-moon transfer trajectory taken into account, this paper gives the deep space autonomous optical navigation algorithm based on the information of Earth-Moon.
论文的主要研究内容包括:针对奔月轨道段任务,给出了基于地月信息的自主光学导航方法。
Desired trajectory of the robot end effector in inertial space is planed based on the movement of the object.
根据目标的运动来规划机械臂末端在惯性空间的期望轨迹。
The control problem for free-floating space robot system with dual-arms to track the desired trajectory in joint space was discussed.
讨论了自由漂浮双臂空间机器人系统关节轨迹跟踪的控制问题。
This guidance law can satisfy the requirements of miss distance and terminal Angle, thus it guarantees that all phases of the large-space variable trajectory smoothly link.
该导引律能同时满足脱靶量要求和末端落角要求,保证了大空域变轨弹道的各段弹道平滑衔接。
According to the moving character of this Robot, kinematic equations is obtained and solved inversely. And also gives the dynamic analysis. In Robot joint space, the trajectory is planned.
根据辐射机器人的运动特性给出了运动学方程的正、反解,并对其作了动力学分析,且在关节空间对其进行了轨迹规划。
When the inertial parameters are unknown, two adaptive control schemes are proposed based on the results for a free- floating space manipulator system to track the desired trajectory in workspace.
在此基础上,给出了系统参数未知时由空间机械臂末端惯性空间期望轨迹产生机械臂关节铰期望角速度、角加速度的增广自适应控制算法。
The restriction among point, line and plane in 3d-space are used to get the trajectory pose accuracy measurement model, which is based on line matching technology.
根据空间解析几何学中点、线和面三者之间的约束关系,建立了基于直线特征匹配的工业机器人运动轨迹位姿视觉检测模型。
The restriction among point, line and plane in 3d-space are used to get the trajectory pose accuracy measurement model, which is based on line matching technology.
根据空间解析几何学中点、线和面三者之间的约束关系,建立了基于直线特征匹配的工业机器人运动轨迹位姿视觉检测模型。
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