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2013 IEEE International Conference on Robotics and Biomimetics (ROBIO)最新文献

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Kinematics and workspace analysis for a novel 6-PSS parallel manipulator 新型6-PSS并联机器人的运动学与工作空间分析
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739740
Weiyuan Xu, Yangmin Li, Xiao Xiao
In this paper, a novel 6-PSS parallel manipulator is designed and the three dimensional structure model is obtained with the Solidworks. The inverse kinematics analysis is performed based on the designed geometric parameters. And according to this analysis, we obtain the theoretical simulation results of virtual structures with different positions and orientations by using MATLAB software. These simulation structures verify the feasibility of this novel 6-PSS parallel manipulator. With a given orientation, a numerical search method is adopted in finding the reachable workspace with the judgment conditions of physical constraints, and the relationship between the reachable workspace and the size of the structure is studied in virtual simulation. Therefore, the range including the largest reachable workspace is achieved and a possible further application of this novel 6-PSS parallel manipulator is proposed, especially in some fields of different structure size requirements.
本文设计了一种新型的6-PSS并联机械臂,并利用Solidworks软件建立了其三维结构模型。根据设计的几何参数进行了运动学逆分析。在此基础上,利用MATLAB软件对不同位置和方向的虚拟结构进行了理论仿真。这些仿真结构验证了该新型6-PSS并联机器人的可行性。在给定方位的情况下,采用数值搜索方法,以物理约束为判断条件寻找可达工作空间,并在虚拟仿真中研究了可达工作空间与结构尺寸的关系。因此,实现了包括最大可达工作空间在内的范围,并提出了该新型6-PSS并联机器人的进一步应用前景,特别是在一些不同结构尺寸要求的领域。
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引用次数: 9
Human-inspired balancing assistance: Application to a knee exoskeleton 人类启发的平衡辅助:应用于膝盖外骨骼
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739474
N. Karavas, A. Ajoudani, N. Tsagarakis, D. Caldwell
As the impedance profiles of the human joints vary substantially during motion, the employment of variable impedance systems into exoskeletons, orthoses and prostheses that will be able to produce human-like mechanics could have significant benefits. In this direction, this manuscript presents a generic technique to estimate active joint stiffness based on an EMG-driven musculoskeletal model whose parameters are adjusted using experimental data obtained from common perturbation methods. In addition, a human balancing experiment was carried out to investigate correlations between the anteroposterior excursions of the center of pressure (CoP) with kinematic, kinetic, electromyographic measurements as well as the model stiffness of the knee joint. Motivated by the results of the cross-correlation analysis we present a human-inspired balancing assistance control for lower limb exoskeletons that permits for volitional stiffness regulation. Preliminary experimental evaluation is conducted using an assistive knee exoskeleton. The results indicate that the proposed control technique can be generalized to command a whole lower limb exoskeleton in order to provide effective balancing assistance to the user.
由于人体关节的阻抗曲线在运动过程中变化很大,因此将可变阻抗系统应用于外骨骼、矫形器和假肢中,将能够产生类似人类的力学,这将具有显著的好处。在这个方向上,本文提出了一种基于肌电驱动的肌肉骨骼模型估计主动关节刚度的通用技术,该模型的参数使用从常见摄动方法获得的实验数据进行调整。此外,还进行了人体平衡实验,以研究压力中心(CoP)的前后位移与运动学、动力学、肌电图测量以及膝关节模型刚度之间的相关性。受相互关联分析结果的激励,我们提出了一种受人类启发的下肢外骨骼平衡辅助控制,允许意志刚度调节。使用辅助膝关节外骨骼进行初步实验评估。结果表明,所提出的控制技术可以推广到控制整个下肢外骨骼,从而为使用者提供有效的平衡辅助。
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引用次数: 9
A novel segmentation guided approach for single image dehazing 一种新的分割引导单幅图像去雾方法
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739832
Qingsong Zhu, P. Heng, Ling Shao, Xuelong Li
This paper presents a novel image haze removal approach from single image. In the algorithm, the constant albedo and dark channel prior methods are combined to represent the transmission model of hazed image. And then, the watershed segmentation approach is introduced to decompose the input image into some gray level consistent areas. Compared with traditional fixed image partition schemes, better estimation of the atmospheric light can be obtained as well as to avoid the problem of halo artifacts. With the improved haze image modeling approach and atmospheric light estimation, the dehazed image with better visual quality can be achieved.
提出了一种新的单幅图像去雾方法。该算法将恒定反照率法与暗通道先验法相结合,来表示模糊图像的传输模型。然后,引入分水岭分割方法,将输入图像分解成若干灰度一致的区域。与传统的固定图像分割方案相比,可以更好地估计大气光,同时避免了晕影问题。通过改进的雾霾图像建模方法和大气光估计,可以获得视觉质量较好的去雾图像。
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引用次数: 7
Complex trajectory tracking using MPC with prediction adjustment 带预测调整的MPC复杂轨迹跟踪
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739787
M. Charest, R. Dubay, Scott Everett
A prediction adjustment parameter η for model predictive control algorithms to enhance complex trajectory tracking is introduced. The η methodology is tested in simulation and on an experimental setup using DMC and GPC algorithms.
介绍了模型预测控制算法的预测调整参数η,以增强复杂轨迹的跟踪能力。利用DMC和GPC算法在模拟和实验装置上对η方法进行了测试。
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引用次数: 0
Detecting, locating and crossing a door for a wide indoor surveillance robot 一种用于大型室内监控机器人的门探测、定位和穿越
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739719
Dawei Dai, Guolai Jiang, Junbo Xin, Xiang Gao, Liangliang Cui, Y. Ou, Guoqiang Fu
Crossing a door is usually a necessary action for autonomous patrol of an indoor surveillance robot. However, it is difficult for a large robot to cross narrow doors. In this paper, a method for detecting, locating and crossing a door for an indoor surveillance robot with Kinect is presented. Firstly, doors are detected and located based on RGB-D data collected form Kinect. Then, the conversion between robot coordinate system and world coordinate system is discussed. Thirdly, a nonlinear adaptive controller is designed for the robot to move perpendicularly through the door. Experiments were taken on a surveillance robot and the results illustrated the effectiveness of this method.
进门通常是室内监控机器人自主巡逻的必要动作。然而,大型机器人很难通过狭窄的门。本文介绍了一种基于Kinect的室内监控机器人的门检测、定位和通过方法。首先,根据从Kinect收集的RGB-D数据检测和定位门。然后,讨论了机器人坐标系与世界坐标系的转换。第三,设计了非线性自适应控制器,使机器人垂直穿过门。在一个监控机器人上进行了实验,结果表明了该方法的有效性。
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引用次数: 17
Modelling human arm motion through the attractor dynamics approach 通过吸引子动力学方法模拟人体手臂运动
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739777
I. Rañó, I. Iossifidis
Movement generation in robotics is an old problem with many excellent solutions. Most of them, however, look for optimality according to some metrics, but have no biological inspiration or cannot be used to imitate biological motion. For a human these techniques behave in a non-naturalistic way. This poses a problem for instance in human-robot interaction and, in general, for a good acceptance of robots in society. The present work presents a new analysis of the attractor dynamics approach to movement generation used in an anthropomorphic robot arm. Our analysis points to the possibility of using this approach to generate human-like arm trajectories in robots. One key property of human trajectories in pick-and-place tasks is the planarity of the trajectory of the end effector in 3D space. We show that this feature is also displayed by the attractor dynamic approach and, therefore, is a good candidate to the generation of naturalistic arm movements.
机器人运动生成是一个老问题,有许多优秀的解决方案。然而,它们大多根据某些指标寻找最优性,但没有生物学灵感或无法用于模仿生物运动。对于人类来说,这些技术以一种非自然的方式运作。这带来了一个问题,例如在人机交互中,总的来说,在社会上对机器人的良好接受。目前的工作提出了一个新的分析吸引子动力学方法运动生成用于拟人机器人手臂。我们的分析指出了使用这种方法在机器人中生成类人手臂轨迹的可能性。人体轨迹在拾取和放置任务中的一个关键特性是末端执行器在三维空间中的轨迹的平面性。我们表明,这一特征也被吸引子动态方法所显示,因此,它是产生自然手臂运动的一个很好的候选者。
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引用次数: 4
A unified language for anthropomorphic arm motion 拟人化手臂运动的统一语言
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739513
Cheng Fang, Xilun Ding
When abundant humanoid robots are springing up in many application fields, the anthropomorphic arm, which is the most important part of the humanoid robot, is facing numerous complicated manipulation tasks. In order to address two diversity issues of anthropomorphic arm platforms and manipulation tasks, a unified "language", a novel task-motion planning method, for different anthropomorphic arms is developed to describe and plan their motion in this paper for the first time. Firstly, six principal rules of human arm motion are extracted from a lot of literature in Neurophysiology. According to these rules, a general library of movement primitives and a well-defined set of motion grammar rules are designed to form a complete motion language for anthropomorphic arms. The movement primitives in the library can be divided into two categories in terms of different spaces: movement primitives described in the operational space to control the position and orientation of the wrist and primitives described in the human arm triangle space to control the configuration of the whole anthropomorphic arm. Movement primitives are the fundamental motion elements of the motion language. Then, according to the motion grammar, goal tasks can be constituted by some movement primitives and movements in terms of a " movement primitive-movement-task" three-level structure. As the operational space and the human arm triangle space are independent of the structure and dimension of the anthropomorphic arm, the designed primitives in the two spaces exist in all anthropomorphic arms. An interface between the motion language and the anthropomorphic arm is developed to solve for joint trajectories of every movement primitive for a specific arm. Finally, by comparing with a traditional method, the proposed motion language is demonstrated to have several advantages including comprehensive control of motion process, replication of motion, and large range of motion planning.
当大量的仿人机器人在许多应用领域涌现出来时,拟人手臂作为仿人机器人最重要的组成部分,面临着众多复杂的操作任务。针对拟人机械臂平台和操作任务的多样性问题,本文首次提出了一种统一的“语言”,即针对不同拟人机械臂的任务运动规划方法来描述和规划拟人机械臂的运动。首先,从大量神经生理学文献中提取人体手臂运动的6条主要规律;根据这些规则,设计了一个通用的运动原语库和一套定义良好的运动语法规则,形成了一套完整的拟人手臂运动语言。库中的运动基元根据空间的不同可分为两类:在操作空间中描述的运动基元用于控制手腕的位置和方向;在人臂三角形空间中描述的运动基元用于控制整个拟人手臂的构型。动作原语是动作语言的基本动作元素。然后,根据动作语法,目标任务可以按照“动作原语-动作-任务”的三级结构,由一些动作原语和动作组成。由于操作空间和人体手臂三角形空间与拟人手臂的结构和尺寸无关,因此这两个空间中的设计原语存在于所有拟人手臂中。在运动语言和拟人手臂之间建立了一个接口,用于求解特定手臂的每个运动原语的关节轨迹。最后,通过与传统方法的比较,证明了所提出的运动语言具有对运动过程的全面控制、运动的可复制性和大范围运动规划等优点。
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引用次数: 3
Development of rehabilitation device for hemiplegic fingers by finger-expansion facilitation exercise with stretch reflex 利用牵张反射进行手指扩张促进训练的偏瘫手指康复装置的研制
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739647
Yong Yu, H. Iwashita, K. Kawahira, R. Hayashi
This paper develops a motor function recovery exercise device to perform intensive repetition of facilitation exercise for motor functional recovery of the hemiplegic fingers. On the facilitation exercise, active finger expansion can be realized and facilitated by stretch reflex. When the figer is being flexed passively, a stimulation tapping is applied instantaneously on the finger for making strech reflex and active finger expansion. Then, resistance forces are applied on the expanding finger for maintaining the strech reflex. In this paper, novel parallel mechanisms, force sensing system with high sensitivity and resistance accompanying cooperation control method are proposed for sensing, controlling and realizing the passive finger flexion, stimulation tapping, stretch reflex, active finger expansion, resistance forces and repetition facilitation exercise. The effectivities and performances of the device are shown by some experiments.
本文研制了一种运动功能恢复训练装置,对偏瘫手指的运动功能恢复进行强化重复促进训练。在促进练习中,手指的主动扩张可以通过拉伸反射来实现和促进。当手指被动屈曲时,在手指上瞬间施加刺激轻拍,使手指产生拉伸反射和主动扩张。然后,在扩张的手指上施加阻力以维持拉伸反射。本文提出了一种新型的并联机构、高灵敏度、高阻力的力感系统以及协同控制方法,用于感知、控制和实现被动手指屈曲、刺激叩击、拉伸反射、主动手指扩张、阻力和重复促进练习。实验证明了该装置的有效性和性能。
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引用次数: 10
Flexible design of a wearable lower limb exoskeleton robot 一种可穿戴下肢外骨骼机器人的柔性设计
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739460
Chunjie Chen, Duan Zheng, Ansi Peng, Can Wang, Xingyu Wu
Wearable exoskeleton robot is a kind of humanoid service robot to help the elderly and the patients with walking dysfunction, it is also an effective medical rehabilitation method to help patients who have walking disorders due to central neural system damage. This paper focuses on the flexible mechanism design of wearable lower limb exoskeleton robot. A wearable exoskeleton robot prototype was developed which can assist human walking. This paper analyzes the role of the major joints of walking human by experimental studies based on bionic design methods from human anatomy and bone surgery. We first analyze parameters of joint movements in a gait cycle, then we design a preliminary bionic model, finally we proposed a control strategy including a pair of electric crutches for the exoskeleton robot.
可穿戴外骨骼机器人是一种帮助老年人和行走功能障碍患者的类人服务机器人,也是帮助因中枢神经系统损伤而出现行走障碍的患者的一种有效的医疗康复方法。本文重点研究了可穿戴式下肢外骨骼机器人的柔性机构设计。研制了一种可穿戴外骨骼机器人样机,可辅助人类行走。基于人体解剖学和骨外科学的仿生设计方法,通过实验研究,分析了行走人体主要关节的作用。首先对外骨骼机器人在一个步态周期内的关节运动参数进行了分析,然后设计了一个初步的仿生模型,最后提出了一种包含一对电动拐杖的外骨骼机器人控制策略。
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引用次数: 13
Simulation analysis of passive adaptive robot's tip-over stability 被动自适应机器人侧翻稳定性仿真分析
Pub Date : 2013-12-01 DOI: 10.1109/ROBIO.2013.6739752
Jianhua Zhang, Lingyu Sun, Ping Peng, Xiaojun Zhang, Jinjie Li
In the complex unstructured road, mobile robots' ability to resist overturning is crucial. In this paper, a tracked mobile robot with passive deformation is developed based on the request of unstructured environment to the robots' movement. The robot can improve stability and the ability to resist overturning by the deformation of passive adaptive mechanisms. A comprehensive judge was made on the tilting of the robot by a standard method of Normalized Dynamic Energy Stability Margin and stability index. The dynamic stability of the robot with road disturbance and inertia force was analyzed and simulated. Theoretical analysis and simulation research offer a reference for the application and design of the robot's control system.
在复杂的非结构化道路中,移动机器人的抗倾覆能力至关重要。本文根据非结构化环境对机器人运动的要求,研制了一种具有被动变形的履带式移动机器人。通过被动自适应机构的变形,提高了机器人的稳定性和抗倾覆能力。采用归一化动态能量稳定裕度和稳定指数的标准方法对机器人的倾度进行综合评判。分析和仿真了该机器人在道路扰动和惯性力作用下的动态稳定性。理论分析和仿真研究为机器人控制系统的应用和设计提供了参考。
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引用次数: 0
期刊
2013 IEEE International Conference on Robotics and Biomimetics (ROBIO)
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