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2015 IEEE International Conference on Robotics and Biomimetics (ROBIO)最新文献

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Scalable pneumatic actuator for easy creation of animated animal-shaped objects 可伸缩的气动执行器,轻松创建动画动物形状的对象
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7419713
Yuki Itotani, Tomoya Kikuno, Ryuma Niiyama, Y. Kuniyoshi
We propose a simple compact pneumatic actuator that can be embedded in the joints of 3D articulated robotic objects and is scalable to the size of the joints. The main advantages of the proposed actuator are its enablement of interactive flopping movement control of real 3D robotic objects, and its simple design, fabrication method, and control process. The design process is facilitated by computer-aided joint detection, the fabrication method is simplified by digital fabrication such as 3D printing, and the control utilizes readily available modularized pneumatic control components and an interactive graphical user interface. We used the example of a cat to demonstrate the simple workflow for fabricating a robotic animal that uses the proposed actuator. The created robotic cat had five joints and used 10 actuators.
我们提出了一种简单紧凑的气动执行器,它可以嵌入到3D关节机器人物体的关节中,并且可以扩展到关节的大小。该驱动器的主要优点是实现了对真实三维机器人物体的交互式翻转运动控制,设计、制造方法和控制过程简单。计算机辅助关节检测促进了设计过程,通过3D打印等数字制造简化了制造方法,控制利用易于获得的模块化气动控制组件和交互式图形用户界面。我们使用猫的例子来演示制造使用所提出的致动器的机器动物的简单工作流程。这只机器猫有5个关节,使用了10个驱动器。
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引用次数: 0
A simple technique for structured light calibration in welding robots 焊接机器人结构光标定的一种简单技术
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7418833
P. Kiddee, Zaojun Fang, M. Tan
Structured light calibration is one of the most crucial parts in a visual sensing system of welding robots. And the main aspect of the structured light calibration is the accuracy. Besides, a practical and simplistic calibration approach is preferable. In this paper, we propose a simple technique for structured light calibration. The vertical and horizontal lines are added to the planar object to facilitate points detection. The information from the camera calibration is fully used to detect the points on the light stripe. Then parameters of the structured light plane are estimated based on three non-collinear points definition. It could be said that the computation in this study is straight forward. Furthermore, it does not require any additional equipment. Thus, it is a truly simple and practical calibration method. According to the experimental results, the calibration errors are less than 0.2 mm. It shows that our proposed method is acceptable to measurement system of welding robots.
结构光标定是焊接机器人视觉传感系统的关键环节之一。而结构光标定的主要方面是精度。此外,最好采用实用而简单的校准方法。在本文中,我们提出了一种简单的结构光校准技术。在平面物体上添加垂直线和水平线,便于点的检测。充分利用相机标定的信息来检测光条上的点。然后根据三个非共线点的定义估计结构光平面的参数。可以说,本研究的计算是直截了当的。此外,它不需要任何额外的设备。因此,它是一种真正简单实用的校准方法。实验结果表明,标定误差小于0.2 mm。结果表明,该方法适用于焊接机器人的测量系统。
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引用次数: 2
RoaDS — Robot and dynamics simulation for biologically-inspired multi-legged walking robots 道路。仿生多足行走机器人的机器人和动力学模拟
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7419045
A. Rönnau, G. Heppner, Sebastian Klemm, R. Dillmann
Increasing computational power and efficient physics engines make robotic simulations popular and applied in more and more domains and scenarios. Well established simulators like GAZEBO have become an important part in robotics research. Nevertheless, non of the popular simulators addresses the needs of multi-legged walking robots. In this work, we develop an efficient and precise simulation system for multi-legged robots: RoaDS. The requirements, architecture and distributed design are presented. A series of experiments with the six-legged walking robot LAURON evaluates and confirms its high accuracy and good performance. RoaDS is a great tool to compare designs of bio-inspired robots, analyze walking patterns and improve robot walking skills.
不断提高的计算能力和高效的物理引擎使得机器人仿真在越来越多的领域和场景中流行和应用。像GAZEBO这样成熟的模拟器已经成为机器人研究的重要组成部分。然而,没有一个流行的模拟器能够满足多腿行走机器人的需求。在这项工作中,我们开发了一个高效、精确的多足机器人仿真系统:RoaDS。介绍了系统的需求、体系结构和分布式设计。六足步行机器人LAURON的一系列实验评估并证实了其高精度和良好的性能。RoaDS是比较仿生机器人设计、分析行走模式和提高机器人行走技能的好工具。
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引用次数: 2
A momentum-based collision detection algorithm for industrial robots 基于动量的工业机器人碰撞检测算法
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7418943
Sumei He, Jinhua Ye, Zhijing Li, Shi-Yue Li, Guokui Wu, Haibin Wu
This paper presents a collision detection algorithm based on generalized momentum to improve the safety reaction of robots. According to the decoupling performance of generalized momentum and external torque of the manipulator, the impact force can be obtained which determine the position where collision occurred. In this paper, a performance-regulating function is introduced to improve the dynamic response characteristics of the algorithm. The algorithm can effectively depress the influence of acceleration and deceleration process. Moreover, it exhibits good real-time performance, and satisfies the expected requirements. The algorithm provides an approximate position and direction of the impact force, which are important for further security reaction control.
为了提高机器人的安全反应能力,提出了一种基于广义动量的碰撞检测算法。根据机械手广义动量与外力矩的解耦性能,可以得到确定碰撞发生位置的冲击力。本文引入了性能调节函数来改善算法的动态响应特性。该算法可以有效地抑制加减速过程的影响。该方法具有良好的实时性,满足了预期的要求。该算法提供了冲击力的大致位置和方向,这对进一步的安全反应控制具有重要意义。
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引用次数: 11
Robotics-driven printing of curved 3D structures for manufacturing cardiac therapeutic devices 用于制造心脏治疗装置的弯曲3D结构的机器人驱动打印
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7419120
Zeyu Wang, J. Min, G. Xiong
Cardiovascular disease (CVD) is the leading cause of death in the United States. 3D printing technology has increasingly paved its way into cardiovascular applications, in particular for manufacturing cardiac therapeutic devices. However, currently available commercial 3D printers and those under development exclusively work by successively depositing layers of material using axis-aligned slicing methods, thus need unacceptably high demand of support materials and even fail fabricating for some complex cardiovascular structures, not to mention printing for the purpose of repairing an existing abnormal strictures. To solve this problem, we propose and develop a novel and robust robotics-driven printing system, consisting of a robotic arm and an extruder tool to allow printing along trajectories on any curved surface. Given the target structure, a new set of algorithms for robot toolpath planning was implemented, which include mesh parameterization, distance transform, contouring and smooth interpolation. Using both simulation and actual physical testing, we showed our system can successfully print layers of the target structure on curved geometry by following planned tool paths and depositing materials. In this paper, we describe our methodology and algorithm pipeline, compare and analyze the printing results of different techniques, and most importantly, envision the promising future extension of our robotics-driven printing system in manufacturing cardiac therapeutic devices.
在美国,心血管疾病(CVD)是导致死亡的主要原因,3D打印技术已经越来越多地应用于心血管领域,特别是在制造心脏治疗设备方面。然而,目前可用的商用3D打印机和正在开发的3D打印机都是通过使用轴向切片方法连续沉积材料层来工作的,因此对支撑材料的要求高得令人无法接受,甚至无法制造一些复杂的心血管结构,更不用说为了修复现有的异常结构而打印了。为了解决这个问题,我们提出并开发了一种新颖而强大的机器人驱动的打印系统,该系统由机械臂和挤出机工具组成,可以沿着任何曲面的轨迹进行打印。针对目标结构,实现了一套新的机器人刀具路径规划算法,包括网格参数化、距离变换、轮廓化和平滑插值。通过模拟和实际物理测试,我们证明了我们的系统可以按照规划的刀具路径和沉积材料成功地在弯曲几何形状上打印目标结构层。在本文中,我们描述了我们的方法和算法管道,比较和分析了不同技术的打印结果,最重要的是,展望了我们机器人驱动的打印系统在制造心脏治疗设备方面的有希望的未来扩展。
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引用次数: 8
Recognition of pathway directions based on nonlinear least squares method 基于非线性最小二乘法的路径方向识别
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7418999
A. Kakogawa, Taiju Yamagami, Yang Tian, Shugen Ma
In-pipe inspection is critical for using a pipeline safely. In recent times, the efficiency of inspection via the use of in-pipe robots has been emphasized in the literature. Inspection efficiency can be significantly improved if the in-pipe robot can move autonomously in the pipe. To do this, recognizing the pathway in front of the robot is a key factor. One method to recognize the pathway using the combination of a laser spot array (LSA) and a camera has been proposed long time ago. However, in this paper, the pathway direction is calculated with different way. The most different point is that the central vector of the pipe (the pathway direction) is estimated by Nonlinear least squares method with a constraint on the pipe radius. At last, their performances between our method and the existing method is compared in terms of accuracy and computation time.
管道内检测对于管道的安全使用至关重要。近年来,通过使用管道机器人进行检测的效率在文献中得到了强调。如果管道机器人能够在管道中自主移动,可以显著提高检测效率。要做到这一点,识别机器人前方的路径是一个关键因素。很早以前就提出了一种利用激光光斑阵列(LSA)和相机相结合的路径识别方法。然而,在本文中,路径方向的计算方法不同。最大的不同之处在于,管道的中心矢量(路径方向)是用非线性最小二乘法估计的,并且对管道半径有约束。最后,比较了本文方法与现有方法在精度和计算时间方面的性能。
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引用次数: 4
Generating grammars for natural language understanding from knowledge about actions and objects 从关于动作和对象的知识中生成用于自然语言理解的语法
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7419068
A. Perzylo, Sascha S. Griffiths, Reinhard Lafrenz, A. Knoll
Many applications in the fields of Service Robotics and Industrial Human-Robot Collaboration, require interaction with a human in a potentially unstructured environment. In many cases, a natural language interface can be helpful, but it requires powerful means of knowledge representation and processing, e.g., using ontologies and reasoning. In this paper we present a framework for the automatic generation of natural language grammars from ontological descriptions of robot tasks and interaction objects, and their use in a natural language interface. Robots can use it locally or even share this interface component through the RoboEarth framework in order to benefit from features such as referent grounding, ambiguity resolution, task identification, and task assignment.
服务机器人和工业人机协作领域的许多应用都需要在潜在的非结构化环境中与人进行交互。在许多情况下,自然语言接口可能是有用的,但它需要强大的知识表示和处理手段,例如,使用本体和推理。在本文中,我们提出了一个框架,用于从机器人任务和交互对象的本体描述自动生成自然语言语法,并在自然语言接口中使用它们。机器人可以在本地使用它,甚至可以通过RoboEarth框架共享这个接口组件,以便从诸如参考接地、歧义解决、任务识别和任务分配等功能中受益。
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引用次数: 7
3D point cloud denoising and normal estimation for 3D surface reconstruction 三维点云的去噪与法向估计
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7418871
Chang Liu, Ding Yuan, Hongwei Zhao
Denoising numerous large scale noise and preserving fine features simultaneously remains a challenge to point-cloud-related multiple view stereo (MVS) reconstruction approaches. The proposed algorithm reuses the sparse point cloud which is often discarded after the structure form motion (SfM) procedure in image based modeling to guide the dense point cloud denoising. Furthermore, the utilization of the octree division provides an efficient and simple denoising mechanism. Experiments show that the proposed method successfully removes the large scale noise points and presents a satisfactory denoising result with detailed information preserved. In addition, the normal of each point can be estimated fast and accurately as a by-product of the denoising algorithm.
同时去噪大量的大尺度噪声并保持良好的特征是点云多视点立体(MVS)重建方法面临的挑战。该算法利用基于图像建模的结构形式运动(SfM)过程中经常被丢弃的稀疏点云来指导密集点云去噪。此外,利用八叉树分割提供了一种高效、简单的去噪机制。实验表明,该方法成功地去除了大尺度的噪声点,在保留细节信息的情况下取得了令人满意的去噪效果。此外,作为去噪算法的副产品,可以快速准确地估计每个点的法向。
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引用次数: 5
On the energetics of a switchable parallel elastic actuator design for monopedal running 单足运动可切换并联弹性致动器的能量学研究
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7418862
Xin Liu, I. Poulakakis
Switchable Parallel Elastic Actuators (S-PEAs) represent a novel way for introducing compliant elements in legged robots. This paper investigates the energetic effects of a S-PEA design on running gaits in the context of the monopedal robot SPEAR, which has its knee driven by a S-PEA. In our implementation of the S-PEA concept, a mechanical switch located at the foot engages the spring during stance to store energy and disengages it during flight to allow for precise control of the leg's configuration without interfering with the spring. Parameter optimization indicates that the S-PEA configuration outperforms common Parallel Elastic Actuator (PEA) designs by 10 - 20% in both hopping-in-place and hopping-forward gaits, and this advantage increases to about 40% at higher running velocities. It is deduced that the ability of SPEAR to adjust the effective stiffness of the leg without requiring additional energy, by simply changing the knee angle prior touchdown, explains part of this advantage.
可切换并联弹性致动器(S-PEAs)是一种将柔性元件引入足式机器人的新方法。本文以单足机器人SPEAR为研究对象,研究了S-PEA设计对其运动步态的能量影响。在我们实施S-PEA概念时,位于脚部的机械开关在站立期间与弹簧啮合以存储能量,并在飞行期间将其断开,以便在不干扰弹簧的情况下精确控制腿部的配置。参数优化表明,S-PEA结构在原地跳跃和向前跳跃两方面都比普通并联弹性致动器(PEA)设计高出10 - 20%,在更高的运行速度下,这一优势增加到40%左右。据推测,SPEAR能够在不需要额外能量的情况下调整腿部的有效刚度,只需在触地前简单地改变膝盖角度,这部分解释了这一优势。
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引用次数: 6
Nonlinear iterative learning control of 5 DOF upper-limb rehabilitation robot 五自由度上肢康复机器人的非线性迭代学习控制
Pub Date : 2015-12-01 DOI: 10.1109/ROBIO.2015.7418866
Xuefeng Zhu, Jianhui Wang, Xiaofeng Wang
This paper focus on the nonlinear and uncertainty problems in the upper limb rehabilitation robot trajectory tracking control. Considering that the rehabilitation robot system need to be performed a repetitive task and the properties of iterative learning control, we introduce a class of nonlinear saturation function and put forward a nonlinear iterative learning control algorithm. This algorithm improved the commonly used linear PID robot dynamics control. It gained the good control quality under the condition of the model information is not accurate and only the position feedback can be measured. It realized the asymptotic stability tracking of the periodic reference input. Combined with rehabilitation robot dynamics model characteristics, applying Lyapunov stability theory to prove the global asymptotic stability of the closed-loop system. The simulation results of five degrees of freedom of rehabilitation robot system show that the proposed nonlinear iterative learning control has good control performance.
本文主要研究了上肢康复机器人轨迹跟踪控制中的非线性和不确定性问题。考虑到康复机器人系统需要执行重复性任务和迭代学习控制的特性,引入了一类非线性饱和函数,提出了一种非线性迭代学习控制算法。该算法改进了常用的线性PID机器人动力学控制。在模型信息不准确、只能测量位置反馈的情况下,该方法获得了良好的控制质量。实现了周期参考输入的渐近稳定跟踪。结合康复机器人动力学模型的特点,应用Lyapunov稳定性理论证明了闭环系统的全局渐近稳定性。对五自由度康复机器人系统的仿真结果表明,所提出的非线性迭代学习控制具有良好的控制性能。
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引用次数: 4
期刊
2015 IEEE International Conference on Robotics and Biomimetics (ROBIO)
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