关键词： Students  

摘要： Persistence of first-year students in computer science is a problem. Although there are many factors that determine whether a student can be successful in computer science, research has shown that some attrition is due to personal perception of their ability in computer science. We created a learning experience specifically designed to improve students' self-assessment of their abilities. "Providing robotic experiences through objectbased programming" (PREOP) is a GUI programming environment based on Alice that students use to program autonomous robot controllers. Results show that for students that rate themselves as average programmers, the modules designed around PREOP positively affect the students' intimidation levels. © 2011 ACM.

关键词： High-Speed   Parallel Robot   Rigid-Flexible Coupled   Dynamic Characteristics  

摘要： A novel 4-UPS-RPS high-speed spatial 5-Degree of freedom parallel robot was proposed. The stationary platform of the parallel robot is connected with the moving platform by the same four UPS (universal joints-prismatic pairs-spherical joints) driving limbs and a RPS (revolution joints-prismatic pairs-spherical joints) driving limb. In order to grasp the dynamic characteristics of 4-UPS-RPS high-speed spatial parallel robot, and privide the important theoretical base of the optimization design and the system control for 4-UPS-RPS parallel robot, the rigid-flexible coupled dynamics modeling and analysis for the parallel robot were realized. The rigid-flexible virtual prototype of 4-UPS-RPS parallel robot was constructed by the united application of CAD, CAE and visual technologies while the driving limbs and spherical joints were treated as flexible bodies, the moving platform, stationary platform and other joints of parallel robot were treated as rigid bodies. Based on the rigid-flexible virtual prototype, the dynamic behaviors, including kinematics output response, dynamic stress of driving limbs and natural frequency, were obtained. The simulation results show that the rigid-flexible model proposed can indicate the dynamic characteristics of parallel robot, the flexibility of driving limbs are demonstrated to have significant impact on system kinematics and dynamics.

关键词： Design   Experimentation   Mobile robots   dynamic reconfiguration   FPGA   computer vision   color recognition  

摘要： Mobile robots are widely used in industrial environments and are expected to be widely available in human environments in the near future, for example, in the area of care and service robots. This article proposes an implementation for a highly customizable color recognition module based on Field Programmable Gate Array (FPGA) hardware to accomplish tasks like real-time frame processing for image streams. In comparison to a pure software solution on a CPU, an attached FPGA-based hardware accelerator enables real-time image processing and significantly reduces the required computing power of the CPU. Instead, the CPU can be used for tasks that cannot be efficiently implemented on FPGAs, for example, because of a large control overhead. We concentrate on a multirobot scenario where a group of robots follows a human team member by keeping a specific formation in order to support the human in exploration and object detection. Additionally, the robots provide a communication infrastructure to maintain a stable multihop communication network between the human and a base station recording all actions and evaluating the captured images and transmitted data. Depending on the current operating conditions, the robot system has to be able to execute a wide variety of different tasks. Since only a small number of tasks have to be executed concurrently, dynamic reconfiguration of the FPGA can be used to avoid the parallel implementation of all tasks on the FPGA. Within this context, this article discusses application fields where dynamic reconfiguration of FPGA-based coprocessors significantly reduces the CPU load and presents examples of how dynamic reconfiguration can be used in exploration.

关键词： 电脑制作   机器人竞赛   信息技术知识   机器人足球   日至   高中组   全国比赛   最佳组织奖   创新精神   技术分  

摘要： 本刊讯5月28日至29日,由省教育厅举办的全省第十一届中小学"讯飞杯"电脑制作活动机器人竞赛在滁州举行。中小学机器人竞赛活动,旨在促进中小学信息技术教育工作,普及信息技术知识,丰富中小学生学习生活。

关键词： 机器人学   教学质量   教学思考   教学对策  

摘要： 为了在已有教学改革的基础上进一步提高机器人学课程的教学质量，本文介绍了该课程的教学现状，分析了制约教学质量进一步提高的因素，并给出了相应的对策。

关键词： 智能机器人   创新实践   自主学习  

摘要： 机器人是进行创新实践教育的有效平台,而基于机器人竞赛的创新实践课程旨在培养学生的自主创新和综合实践能力。结合实际参赛的经验,对基于机器人竞赛的大学生创新能力培养的机制和实践过程进行研究。具体阐述机器人创新实践课程安排,分析AS-UII能力风暴大学版机器人平台,并给出相应的教学与学习模式、教学案例。

关键词： 助力机器人   动力学   拉格朗日方程   下肢   康复  

摘要： 背景:2005年成功研制出下肢康复机器人系统,该机器人通过中心控制系统和步态、姿态控制系统互相协调,带动下肢各种运动,从而达到恢复下肢功能的目的。目的:对下肢康复助力机器人做动力学分析。方法:该系统为一个复杂的动力系统,由多个关节和多个连杆组成,具有多个输入和多个输出,分析其运动和作用力之间的关系。通过运动信息感知网,实现机器人系统主动为使用者提供完成髋关节屈/伸、旋内/旋外及外展/内收功能恢复动作的助力支持。结果与结论:利用动力学方程完成人-机混合系统的控制。减小人体感受的运动强度,使练习者能充分完成功能恢复动作,随着康复者下肢力量的加强和动作的熟练程度的提高,通过改变系统控制参数,系统会逐步减少对其助力支持,直到康复。

关键词： Organism   transport   Sailing   PROPELLER   robotics   inspiration   Body Parts   jet   Gerridae   Hand   jets   Walking on water   Respiratory Inspiration   Figure   Sinks  

摘要： There are many ways to travel by water. Watercraft can use propellers and sails while living organisms exhibit quite a variety of modes of transport. They sink and swim, flap and glide, stroke and jet. From this, we see a distinction between the limited human solutions and the diverse natural solutions. This natural diversity continues to inspire inventions in robotics. Leonardo da Vinci envisioned walking on water (Figure 1), something water striders could do millions of years ago (Hu et al., 2007). Bathtub toys such as the TwiddleFish, designed by Chuck Pell of Duke University (Figure 2), taught us the importance of stiffness in how fish swim so well. Pell commented, "In the hands of kids...they can really feel what's going on." To the delight of pre-K-12 children and their parents, there are propulsive toys on the market with remarkably functional body parts, serving as inspiration and outreach to youngsters.

关键词： LETTERS to the editor   ROBOTS  

摘要： This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.