外文翻译空间机器人防碰路径规划.doc

课程名称: 计算机集成制造系统作业名称: ROBOT 学生班级: K 数控学生学号: 学生姓名: 成绩评定: 教师签字: Space Robot Path Planning for Collision Avoidance Yuya Yanoshita and Shinichi Tsuda Abstract — This paper deals with a path planning of space robot which includes a collision avoidance algorithm. For the future space robot operation, autonomous and self-contained path planning is mandatory to capture a target without the aid of ground station. Especially the collision avoidance with target itself must be always considered. Once the location, shape and grasp point of the target are identified, those will be expressed in the configuration space. And in this paper a potential method, Laplace potential function, is applied to obtain the path in the configuration space in order to avoid so-called deadlock phenomenon. Some improvement on the generation of the path has been observed by applying path smoothing method, which utilizes the spline function interpolation. This reduces putational load and generates the smooth path of the space robot. The validity of this approach is shown bya few numerical simulations. Key Words — Space Robot, Path Planning, Collision Avoidance, Potential Function, Spline Interpolation I. INTRODUCTION In the future space development, the space robot and its autonomy will be key features of the space technology. The space robot will play roles to construct space structures and perform inspections and maintenance of spacecrafts. These operations are expected tobe performed in an autonomous manner in place of extravehicular activities by astronauts. In the above space robot operations, a basic and important task is to capture free flying targets on orbit by the robotic arm. For the safe capturing operation, it will be required to move the arm from initial posture to final posture without collisions with the target. The configuration space and artificial potential methods are often applied to the operation planning of the usual robot. This enables the robot arm to evade the obstacle and to