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Proceedings 1995 IEEE/RSJ International Conference on Intelligent Robots and Systems. Human Robot Interaction and Cooperative Robots最新文献

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ELVIS: Eigenvectors for Land Vehicle Image System 陆地车辆图像系统的特征向量
J. Hancock, C. Thorpe
ELVIS (Eigenvectors for Land Vehicle Image System) is a road-following system designed to drive the CMU Navlabs. It is based on ALVINN, the neural network road-following system built by Dean Pomerleau at CMU. ELVIS is an attempt to more fully understand ALVINN and to determine whether it is possible to design a system that can rival ALVINN using the same input and output, but without using a neural network. Like ALVINN, ELVIS observes the road through a video camera and observes human steering response through encoders mounted on the steering column. After a few minutes of observing the human trainer, ELVIS can take control. ELVIS learns the eigenvectors of the image and steering training set via principal component analysis. These eigenvectors roughly correspond to the primary features of the image set and their correlations to steering. Road-following is then performed by projecting new images onto the previously calculated eigenspace. ELVIS architecture and experiments are discussed as well as implications for eigenvector-based systems and how they compare with neural network-based systems.
ELVIS(陆地车辆图像特征向量系统)是一个道路跟踪系统,设计用于驱动CMU导航实验室。它基于由CMU的Dean Pomerleau建立的神经网络道路跟踪系统ALVINN。ELVIS试图更全面地理解ALVINN,并确定是否有可能设计一个系统,可以使用相同的输入和输出,但不使用神经网络与ALVINN竞争。和ALVINN一样,ELVIS通过摄像机观察路况,并通过安装在转向柱上的编码器观察驾驶员的驾驶反应。观察人类训练员几分钟后,猫王就可以控制了。ELVIS通过主成分分析学习图像的特征向量和转向训练集。这些特征向量大致对应于图像集的主要特征及其与转向的相关性。然后通过将新图像投影到先前计算的特征空间来执行道路跟踪。讨论了ELVIS架构和实验,以及基于特征向量的系统的含义,以及它们如何与基于神经网络的系统进行比较。
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引用次数: 34
Kinematic calibration of a Stewart platform using pose measurements obtained by a single theodolite 利用单个经纬仪获得的姿态测量对Stewart平台进行运动学校准
H. Zhuang, O. Masory, Jiahua Yan
This paper focuses on the accuracy enhancement of Stewart platforms through kinematic calibration. The calibration problem is formulated in terms of a measurement residual, which is the discrepancy between the measured leg length and the computed leg length. With this formulation, one is able to identify kinematic error parameters of the Stewart platform without the necessity of solving the forward kinematic problem, thus avoiding the numerical problems associated with the solution of the forward kinematic problem. The error parameters are basically the installation errors of the platform ball and U-joints as well as the leg length offsets. By this formulation, a concise differential error model with a well-structured identification Jacobian, which relates the pose measurement residual to the errors in the parameters of the platform, is derived. A measurement procedure that utilizes a single theodolite was devised to determine the poses of the platform. Experimental studies reveal that the proposed calibration method is effective in enhancing the accuracy performance of Stewart platforms.
本文主要研究了通过运动学标定提高Stewart平台精度的方法。校准问题是用测量残差来表示的,残差是测量的腿长与计算的腿长之间的差异。利用该公式,可以在不求解正运动学问题的情况下识别Stewart平台的运动误差参数,从而避免了求解正运动学问题所带来的数值问题。误差参数主要是平台球和u型接头的安装误差以及腿长偏移量。通过该公式,推导出了一个简洁的微分误差模型,该模型具有结构良好的识别雅可比矩阵,将位姿测量残差与平台参数误差联系起来。设计了一种利用单一经纬仪的测量程序来确定平台的姿态。实验研究表明,所提出的标定方法能有效提高Stewart平台的精度性能。
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引用次数: 87
Moving multiple tethered robots between arbitrary configurations 在任意配置之间移动多个系留机器人
Susan Hert, V. Lumelsky
We considered the problem of motion planning for a number of small, disc-like robots in a common planar workspace. Each robot is tethered to a point on the boundary of the workspace by a flexible cable of finite length. These cables may be pushed and bent by robots that come in contact with them but remain taut at all times. The robots are given a set of target points to which they must move. Upon arrival at these points, a new set of target points are given. Associated with each set of target points is a configuration of the cables that must be achieved when all robots are at these target points. The motion planning task addressed here is to produce relatively short paths for the robots from an initial (nontrivial) configuration of the cables to a configuration corresponding to the next set of target points. An O(n/sup 2/logn) algorithm is presented for achieving this task for n robots.
我们考虑了一个共同平面工作空间中许多小型圆盘状机器人的运动规划问题。每个机器人都被一根有限长度的柔性电缆拴在工作空间边界上的一个点上。这些电缆可能会被与它们接触的机器人推动和弯曲,但始终保持紧绷状态。给机器人一组它们必须移动的目标点。到达这些点后,给出一组新的目标点。与每组目标点相关联的是当所有机器人都在这些目标点时必须实现的电缆配置。这里讨论的运动规划任务是为机器人从电缆的初始(非平凡)配置到对应于下一组目标点的配置产生相对较短的路径。针对n个机器人,提出了一种O(n/sup 2/logn)算法。
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引用次数: 12
Multi-sensor based planning and control for robotic manufacturing systems 基于多传感器的机器人制造系统规划与控制
Zhenyu Yu, B. Ghosh, N. Xi, T. Tarn
A multi-sensor based planning and control scheme for robotic manufacturing is presented in this paper. The proposed approach fuses sensory information from various sensors at different temporal and spatial scales in an event-based planning and control scheme. By combining the measurement of an encoder sensor, relative spatial information obtained from processing of visual measurement is mapped to the absolute task-space of the robot, delayed data obtained from a displacement based vision algorithm that represent absolute part position measurement is brought to up to date. A four-step approach to planning and control of a robotic manipulator is discussed. An event-driven tracking and control scheme that is based on multi-sensor information is given. The approach is illustrated by considering a manufacturing workcell where the manipulator is commanded to pick up a part on a disc conveyor under the guidance of computer vision.
提出了一种基于多传感器的机器人制造规划与控制方案。该方法将不同时间和空间尺度的传感器信息融合到基于事件的规划和控制方案中。通过结合编码器传感器的测量,将视觉测量处理得到的相对空间信息映射到机器人的绝对任务空间,将基于位移的视觉算法得到的代表绝对零件位置测量的延迟数据更新到最新。讨论了机器人机械臂规划与控制的四步法。提出了一种基于多传感器信息的事件驱动跟踪控制方案。该方法通过考虑一个制造工作单元来说明,其中机械手在计算机视觉的指导下被命令拾取圆盘输送机上的零件。
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引用次数: 7
The effect of action recognition and robot awareness in cooperative robotic teams 协作机器人团队中动作识别与机器人意识的影响
L. Parker
Previous research in cooperative robotics has investigated several possible ways of coordinating the actions of cooperative teams-from implicit cooperation through sensory feedback to explicit cooperation using the exchange of communicated messages. These various approaches differ in the extent to which robot team members are aware of, or recognize the actions of their teammates and the extent to which they use this information to effect their own actions. The research described in this paper investigates this issue of robot awareness of team member actions and its effect on cooperative team performance by examining the results of a series of experiments on teams of mobile robots performing a puck moving mission. In these experiments, the author varies the team size (and thus the level of redundancy in team member capabilities) and the level of awareness robots have of their teammates' current actions and evaluate the team's performance using two metrics: time and energy. The results indicate that the impact of action awareness on cooperative team performance is a function not only of team size and the metric of evaluation, but also on the degree to which the effects of actions can be sensed through the world, the relative amount of work that is available per robot, and the cost of replicated actions. Based on these empirical studies, the author discusses the impact of action recognition and robot awareness on cooperative team design.
先前的合作机器人研究已经研究了几种协调合作团队行动的可能方式——从通过感官反馈的隐性合作到使用沟通信息交换的显式合作。这些不同的方法在机器人团队成员意识到或识别队友行动的程度以及他们使用这些信息影响自己行动的程度上有所不同。本文通过对移动机器人团队进行移球任务的一系列实验结果,研究了机器人对团队成员行动的意识问题及其对合作团队绩效的影响。在这些实验中,作者改变了团队规模(从而改变了团队成员能力的冗余程度)和机器人对队友当前行为的感知程度,并使用两个指标来评估团队的表现:时间和精力。研究结果表明,行动意识对合作团队绩效的影响不仅与团队规模和评估指标有关,还与世界感知行动效果的程度、每个机器人可用的相对工作量以及重复行动的成本有关。在这些实证研究的基础上,作者讨论了动作识别和机器人意识对合作团队设计的影响。
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引用次数: 74
The hot line work robot system "Phase II" and its human-robot interface "MOS" 热线工作机器人系统“Phase II”及其人机界面“MOS”
M. Nakashima, K. Yano, Y. Maruyama, H. Yakabe
This paper describes the design concepts and development outline of the semi-automatic hot-line work robot system, "Phase II" and its human-robot interface, "MOS" developed by the authors' company. In order to realize a high level of automation on hot-line work, reduce the operators' work load, and increase work efficiency, the authors have adapted a semi-automatic operation method with dual-armed manipulators and multi-operation system or "MOS" in "Phase II". The former is realized through two kinds of controlled motions: sensor model-based controlled motion and master-slave controlled motion. The latter is the system which integrates real images, characters, diagrams, and voice. This paper includes experimental results of work which certify the effectiveness of the robot system, which uses sensor model-based control and master-slave control jointly and also "MOS". "Phase II" can be roughly classified into these components; vehicles, booms, robot portions (using the 7-axis dual-armed manipulators), cameras, automatic tool changers (ATC), automatic material changers (AMC), and "MOS". The system organization such as this, the authors are convinced, is one of the basic systems for overhead work systems with mobility.
本文介绍了笔者公司开发的半自动热线工作机器人系统“Phase II”及其人机界面“MOS”的设计理念和开发大纲。为了实现热线工作的高度自动化,减少操作员的工作量,提高工作效率,作者在“二期”中采用了双臂机械手和多操作系统(MOS)的半自动操作方式。前者通过两种控制运动实现:基于传感器模型的控制运动和主从控制运动。后者是集真实图像、文字、图表和语音于一体的系统。本文给出了基于传感器模型的控制与主从控制相结合的机器人系统的工作实验结果,验证了该系统的有效性。“第二期”大致可分为以下几个部分;车辆、吊杆、机器人部分(使用7轴双臂机械手)、摄像头、自动换刀器(ATC)、自动换料器(AMC)和“MOS”。这样的系统组织是具有移动性的架空作业系统的基本系统之一。
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引用次数: 28
Edge tracking using tactile servo 使用触觉伺服进行边缘跟踪
N. Chen, Hong Zhang, R. Rink
A novel method to perform edge tracking using tactile sensors is presented in this paper. Using the tactile servo scheme, a robot manipulator is driven only by real-time tactile feedback from the array tactile sensors mounted directly on the robot end-effector. Compared with previous approaches, the control scheme presented in this paper is consistent and more efficient. Real-time edge tracking experiments are conducted using an experimental system consisting of a PUMA 260, a single rigid finger and a planar array tactile sensor. Experimental results show satisfactory control speed and accuracy for both straight and curved edge tracking. An example of active tactile sensing of a unknown object using edge tracking is also demonstrated.
提出了一种利用触觉传感器进行边缘跟踪的新方法。在触觉伺服方案中,机器人仅通过直接安装在机器人末端执行器上的阵列触觉传感器的实时触觉反馈来驱动机器人。与以往的控制方法相比,本文提出的控制方案具有一致性和更高的效率。利用PUMA 260、单刚性手指和平面阵列触觉传感器组成的实验系统,进行了实时边缘跟踪实验。实验结果表明,直线边和曲线边的跟踪控制速度和精度都令人满意。本文还演示了一个利用边缘跟踪对未知物体进行主动触觉感知的例子。
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引用次数: 50
Experimental validation of compliance models for LADD transmission kinematics LADD传动运动学柔度模型的实验验证
G. Mennitto, M. Buehler
Introduces new compliance models for LADD (linear to angular displacement device) transmissions which reduce, by an order of magnitude, inelastic model errors of up to 18% full scale over force and position operating ranges. Elastic models introduced so far were all based on fiber elasticity, which show an increase an LADD length from the inelastic length with force. The authors show that in experiments the opposite is true. The LADD is always shorter than predicted from the inelastic model. As the load force increases, the LADD length approaches the inelastic length. The authors found the cause for this fundamentally different elastic behavior to be fiber bending. The authors also employ one of the new models to improve the prediction of the kinematics of a CLADD, which consists of two concentric LADD devices. The new LADD models are essential for the design of LADD based systems, the online estimation of LADD forces, and accurate control.
为LADD(线性到角位移装置)传动引入了新的顺应性模型,将力和位置操作范围内的非弹性模型误差降低了一个数量级,最大可达18%。目前所介绍的弹性模型都是基于纤维弹性,其LADD长度随着力的增加而比非弹性长度增加。作者表明,在实验中,情况正好相反。LADD总是比非弹性模型预测的要短。随着载荷力的增大,LADD长度逐渐接近非弹性长度。作者发现,造成这种根本不同的弹性行为的原因是纤维弯曲。作者还利用其中一个新模型改进了由两个同心LADD装置组成的CLADD的运动学预测。新的LADD模型对于基于LADD的系统设计、LADD力的在线估计和精确控制至关重要。
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引用次数: 5
Cooperative material handling by human and robotic agents: module development and system synthesis 人类和机器人代理的协同物料处理:模块开发和系统综合
J. Adams, R. Bajcsy, J. Kosecka, Vijay R. Kumar, R. Mandelbaum, M. Mintz, R. Paul, Curtis Wang, Y. Yamamoto, X. Yun
Presents a collaborative effort to design and implement a cooperative material handling system by a small team of human and robotic agents in an unstructured indoor environment. The authors' approach makes fundamental use of the human agents' expertise for aspects of task planning, task monitoring, and error recovery. The authors' system is neither fully autonomous nor fully teleoperated. It is designed to make effective use of the human's abilities within the present state of the art of autonomous systems. The authors' robotic agents refer to systems which are each equipped with at least one sensing modality and which possess some capability for self-orientation and/or mobility. The authors' robotic agents are not required to be homogeneous with respect to either capabilities or function. The authors' research stresses both paradigms and testbed experimentation. Theory issues include the requisite coordination principles and techniques which are fundamental to a cooperative multiagent system's basic functioning. The authors have constructed an experimental distributed multiagent-architecture testbed facility. The required modular components of this testbed are currently operational and have been tested individually. The authors' current research focuses on the agents' integration in a scenario for cooperative material handling.
提出了一种在非结构化室内环境中由人类和机器人代理组成的小团队设计和实现合作物料处理系统的协作努力。作者的方法从根本上利用了人类代理在任务规划、任务监控和错误恢复方面的专业知识。作者的系统既不是完全自主的,也不是完全遥控的。它的目的是有效地利用人类的能力在目前的艺术自主系统的状态。作者的机器人代理指的是每个都配备了至少一种传感模式,并具有一定的自我定位和/或移动能力的系统。作者的机器人代理不需要在能力或功能方面是同质的。作者的研究同时强调范式和试验台实验。理论问题包括必要的协调原则和技术,这是合作多主体系统基本功能的基础。作者构建了一个实验性的分布式多智能体体系结构测试平台。该试验台所需的模块化组件目前正在运行,并已单独进行了测试。作者目前的研究主要集中在协作物料处理场景中agent的集成。
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引用次数: 95
Cooperation between the human operator and the multi-agent robotic system: evaluation of agent monitoring methods for the human interface system 人类操作者与多智能体机器人系统之间的合作:人机界面系统中智能体监控方法的评估
Tsuyoshi Suzuki, K. Yokota, H. Asama, H. Kaetsu, I. Endo
This paper first discusses the relation between the human operator and the decentralized autonomous robotic system. The operator relates himself to the system loosely in the decentralized autonomous system. The authors position the operator as a problem solver and a monitor of the system. The human operator is regarded as an agent in the decentralized autonomous robotic system. Then strategies of communication between the human operator and agents are discussed. The authors propose explicit and implicit communication strategies to monitor the system, and several monitoring methods to implement them: time-based and event-based monitoring for explicit communication and eavesdropping messages for implicit communication. The authors compare the monitoring methods in order to ascertain how much information the human operator can gather in each method using simulation. Finally, the characteristics of each monitoring method are analyzed.
本文首先讨论了人类操作者与分散自主机器人系统之间的关系。在分散自治系统中,操作者将自己与系统松散地联系起来。作者将操作员定位为系统的问题解决者和监督者。将人类操作者视为分散自主机器人系统中的一个代理。然后讨论了人工操作者与智能体之间的通信策略。作者提出了用于监控系统的显式和隐式通信策略,以及实现这些策略的几种监控方法:用于显式通信的基于时间和基于事件的监控,以及用于隐式通信的窃听消息。作者比较了各种监测方法,以确定人工操作员在每种方法中可以收集到多少信息。最后,分析了各种监测方法的特点。
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引用次数: 18
期刊
Proceedings 1995 IEEE/RSJ International Conference on Intelligent Robots and Systems. Human Robot Interaction and Cooperative Robots
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