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2017 IEEE International Symposium on Robotics and Intelligent Sensors (IRIS)最新文献

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Intelligent estimation strategies applied to a flight surface actuator 基于智能估计策略的飞行面执行器
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250105
Elyse Hill, Andrew S. Lee, S. Gadsden, M. Al-Shabi
The Kalman filter (KF) has drastically changed and formed the field of state and parameter estimation theory and has impacted a number of applications: spacecraft, GPS, fault detection and diagnosis, stock market analysis, cell phones, autonomous vehicles, to name only a few. A statistically optimal solution for known linear systems is provided by the KF, in the presence of Gaussian white noise. However, the optimality of the KF affects numerical stability and robustness. A number of linear and nonlinear forms of the KF have been introduced to overcome numerical, stability, and nonlinearity issues. In recent years, intelligent or cognitive-based KFs have been proposed. Intelligent filters generally include adaptive gains and feedback for improved estimation accuracy and robustness. These types of filters are typically more robustness to modeling uncertainties and disturbances. This paper provides a comparison of two popular KF methods: fuzzy-based and machine learning-based. These strategies are applied on a flight surface system and the estimation results are compared and discussed. Future trends in intelligent estimation theory are also considered.
卡尔曼滤波(KF)极大地改变和形成了状态和参数估计理论领域,并影响了许多应用:航天器,GPS,故障检测和诊断,股票市场分析,手机,自动驾驶汽车,仅举几例。在存在高斯白噪声的情况下,KF给出了已知线性系统的统计最优解。然而,KF的最优性影响了数值稳定性和鲁棒性。引入了许多线性和非线性形式的KF来克服数值、稳定性和非线性问题。近年来,人们提出了智能或基于认知的KFs。智能滤波器通常包括自适应增益和反馈,以提高估计精度和鲁棒性。这些类型的滤波器通常对建模不确定性和干扰具有更强的鲁棒性。本文比较了两种流行的KF方法:基于模糊的方法和基于机器学习的方法。将这些策略应用于一个飞行表面系统,并对估计结果进行了比较和讨论。并对智能估计理论的发展趋势进行了展望。
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引用次数: 10
A cooperative exploration strategy with efficient backtracking for mobile robots 移动机器人高效回溯的协同探索策略
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250106
Jinho Kim, Stephanie Bonadies, Andrew Lee, S. Gadsden
This paper proposes a cooperative robot exploration (CREI strategy which is based on the sensor-based random tree (SKT) method. The proposed CRE strategy is for exploring unknown environments with a team of mobile robots equipped with range finder sensors. An existing backtracking technique for frontier-based exploration involves moving back through inefficient routes. To enhance the efficiency of the backtracking algorithm, a hub node is defined and the most direct backtracking route is generated using its frontier data. Numerical simulations demonstrate that the proposed strategy enables exploration of unknown environments by robots more efficiently than other common methods.
提出了一种基于传感器随机树(SKT)方法的协同机器人探索(CREI)策略。提出的CRE策略是用一组配备测距传感器的移动机器人探索未知环境。现有的基于边界的勘探回溯技术涉及通过低效的路线返回。为了提高回溯算法的效率,定义了一个集线器节点,并利用其边界数据生成最直接的回溯路径。数值模拟结果表明,该策略比其他常用方法更有效地实现了机器人对未知环境的探索。
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引用次数: 7
Personalized clothing recommendation by a social robot 社交机器人的个性化服装推荐
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250118
Leo Woiceshyn, Yuchi Wang, G. Nejat, B. Benhabib
Social robots can assist individuals with performing a number of different daily tasks. One such task, which has not been extensively explored, is suggesting appropriate clothing to an individual. This paper presents a novel, autonomous, clothing recommendation system that employs social robots. The proposed system can autonomously recommend options, from a user's wardrobe, that are personalized to an activity at hand. The novelty of the system lies in its ability to learn from the individual users' preferences over time. The learning-based personalization feature allows the system to assist new users as well as adapt to users whose preferences change over time. Human-robot interaction studies were conducted to assess both the performance of the overall system as well as its potential long-term adaptability.
社交机器人可以帮助个人完成许多不同的日常任务。其中一项尚未被广泛探索的任务是向个人建议合适的服装。本文提出了一种新型的、自主的、使用社交机器人的服装推荐系统。该系统可以从用户的衣柜中自动推荐个性化的活动选项。该系统的新颖之处在于它能够随着时间的推移从单个用户的偏好中学习。基于学习的个性化功能允许系统帮助新用户,并适应随着时间的推移而改变偏好的用户。进行了人机交互研究,以评估整个系统的性能及其潜在的长期适应性。
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引用次数: 16
Kinematic motion studies of an OmniDirectional mobile robot 全向移动机器人的运动学运动研究
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250141
J. Field, M. U. Salman
Actuator failure may severely affect the performance of mobile robots and vehicles. This study serves to evaluate how a mobile system responds under various actuator failure modes to determine appropriate methods to satisfy performance objectives. We evaluate a kinematically symmetric holonomic mobile robot while fully actuable (with no motor/wheel failures), as well as under actuator failure conditions. Closed-loop state feedback is applied to the system to observe performance and self-correction under both nominal and failure mode conditions, and resulting performance is evaluated. Observations of these conditions motivate the need to address failure modes within the controller architecture.
执行器故障会严重影响移动机器人和车辆的性能。本研究旨在评估移动系统在各种致动器失效模式下的响应,以确定适当的方法来满足性能目标。我们评估了一个运动学对称的完整移动机器人,同时完全可执行(没有电机/车轮故障),以及执行器故障条件下。将闭环状态反馈应用于系统,观察系统在标称和失效模式条件下的性能和自校正,并对系统性能进行评估。对这些情况的观察激发了在控制器架构中解决故障模式的需求。
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引用次数: 2
A novel clutch coupled nonholonomic wheeled mobile robot mechanism to mechanically minimize deduced reckoning error 一种新颖的离合器耦合非完整轮式移动机器人机构,以机械地减小推算误差
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250136
Ammar Nathad, Jaya Rajwani
Motion stabilization of mobile robots has been a considerably large area of research in robotics and there are innumerous programming based solutions to cater this issue. It still becomes inconvenient to make wheeled mobile robots (WMR) move autonomously over distances without producing deduced (dead) reckoning error. The WMRs then fail to move without continuous control feedback systems resulting in systematic odometry error. A novel approach for attaining continuously synchronized drive motion and to produce a cost effective mechanical structure, without complex electronic feedback control system is the purpose of our research. This paper presents the existing solutions that have been in practice to mechanically reduce odometry error, a comparative analysis is then evaluated followed with the proposed design. Unlike conventional differential drive mechanisms, it is driven by two independent motors, one generates drive power to all the wheels for linear kinematics, and the other helps achieve the zero degrees rotation using bevel gear arrangement. The robot has the ability to move in a curved trajectory using two motors simultaneously. These mechanisms are electronically controlled by powering the motor, and engaging the electromagnetic clutch attached to the wheel as required. This shows that this robot is flexible and able to perform point-to-point motion effectively.
移动机器人的运动稳定一直是机器人研究的一个相当大的领域,并且有无数基于编程的解决方案来满足这个问题。轮式移动机器人(WMR)在不产生推断(航位)推算误差的情况下进行自主移动仍然很不方便。如果没有连续的控制反馈系统,wmr将无法移动,从而导致系统里程误差。在不需要复杂的电子反馈控制系统的情况下,实现连续同步驱动运动和生产具有成本效益的机械结构的新方法是我们研究的目的。本文介绍了现有的机械减小里程误差的解决方案,并对所提出的设计进行了比较分析。不同于传统的差动驱动机构,它是由两个独立的电机驱动,一个产生驱动动力,所有的车轮进行直线运动,另一个帮助实现零度旋转采用锥齿轮安排。该机器人能够同时使用两个电机在曲线轨迹上移动。这些机制是电子控制的动力电机,并接合的电磁离合器附加到车轮的需要。这表明该机器人具有一定的灵活性,能够有效地进行点对点运动。
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引用次数: 0
Design of an electromechanical prosthetic finger using shape memory alloy wires 形状记忆合金丝机电假指的设计
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250098
L. Van der Elst, Serket Quintanar-Guzman, J. Hadji-Minaglou
This research concerns the design and prototyping of an artificial middle finger, using Shape Memory Alloys (SMAs), PolyLactic Acid (PLA), and other technologies. The design is a biomimicry of the human biological anatomical and muscular systems. After briefly describing the operational features and functioning of natural striated muscles, the document reviews the features, advantages and disadvantages of SMAs in the perspective of their use as an actuator of a prosthetic finger. Using different design parameters, such as the lightness of the device, actuation complexity, and resilience, a working prototype is proposed meeting the established criteria.
本研究涉及使用形状记忆合金(sma)、聚乳酸(PLA)和其他技术的人造中指的设计和原型。该设计是对人体生物解剖和肌肉系统的仿生学。在简要描述了天然横纹肌的操作特征和功能后,本文从sma作为假指致动器的角度回顾了sma的特点、优缺点。利用不同的设计参数,如装置的重量、驱动复杂性和弹性,提出了一个满足既定标准的工作原型。
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引用次数: 4
Pressure presentation strength for calligraphy brushwork instruction 压力呈现力度为书法笔法指导
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250121
N. Tsuda, Ami Morikawa, Y. Nomura, N. Kato
In this paper, an instruction system of calligraphy brushwork for apprentices is introduced. In order to write a well-shaped character, the brush is required to be operated skillfully. Calligraphy experts operate a brush in multi-degrees of freedom, however, for apprentices, it is tentatively required to control a brush in low-degree of freedom (a horizontal plane) as a beginning training. The reason is that the shape of a character becomes better to an extent by correcting a brushwork slightly, and a slight instruction in a horizontal plane enables this. In the authors' developed system, the motion of the student's brush (handwriting) is measured by Leapmotion, and if the brush goes far from the reference trajectory, the developed pressure presentation device stimulates the student's wrist as an instruction at the moment. Although the structure of the developed instruction system is so elementary, the system is expected that it can induce the student to correct the handwriting. For this purpose, calligraphy training experiments with several participants were carried out. The reaction times and the brush overruns from the reference trajectories for three kinds of pressure strength were measured during brushworks. As results, it was confirmed that the reaction times of participants and the brush overruns became shorter significantly, if the strength of the pressure presentation was strengthened.
本文介绍了一种针对徒弟的书法笔法教学体系。要写出一个优美的字,就需要熟练地使用毛笔。书法专家在多个自由度操作毛笔,然而,对于学徒来说,暂时要求在低自由度(水平面)控制毛笔作为开始训练。因为稍微改一下笔法,字的形状就会在一定程度上变好,而在水平面上稍加指示,就可以做到这一点。在作者开发的系统中,学生的毛笔(笔迹)的运动是通过Leapmotion来测量的,如果毛笔偏离参考轨迹,开发的压力呈现装置就会刺激学生的手腕作为指示。虽然开发的教学系统的结构是如此的初级,但该系统有望引导学生纠正笔迹。为此,开展了几个参与者的书法训练实验。在涂刷过程中,测量了参考轨迹对三种压力强度的反应时间和刷头溢出。结果证实,如果压力呈现的强度加强,参与者的反应时间和刷溢出显著缩短。
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引用次数: 1
A stereo cameras setup for pedestrian detection enhancement 立体摄像机设置行人检测增强
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250147
A. T. M. Nakamura, Luiz Ricardo Takeshi Horita, V. Grassi
Pedestrian detection is an important and challenging area in computer vision with the potential to save lives. Although many works have already been developed to improve performance of pedestrian detection algorithms, none have yet been able to handle detection from afar due to pedestrians' small scales on images. This prevents these algorithms to be reliably applied to autonomous vehicles to avoid accidents on fast moving traffic. In this context, this paper proposes a cameras setup, which consists of two stereo cameras with different focal lengths and baselines, allowing to have higher pedestrian resolutions on images for a larger range of distances in front of the vehicle. Experimental results reveal a considerable enhancement on the detection performance, overcoming the difficulty caused by the reduced scale that pedestrians have on images.
行人检测是计算机视觉中一个重要且具有挑战性的领域,具有挽救生命的潜力。虽然已经开发了许多工作来提高行人检测算法的性能,但由于行人在图像上的小尺度,还没有一个能够处理远距离检测。这使得这些算法无法可靠地应用于自动驾驶汽车,以避免在快速行驶的交通中发生事故。在这种情况下,本文提出了一种摄像机设置,它由两个具有不同焦距和基线的立体摄像机组成,允许在车辆前方更大范围内的图像上具有更高的行人分辨率。实验结果表明,该方法在检测性能上有很大的提高,克服了行人对图像的尺度缩小带来的困难。
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引用次数: 3
Value iteration based approximate dynamic programming for mobile robot trajectory tracking with persistent inputs 基于值迭代的移动机器人轨迹跟踪近似动态规划
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250096
Md. Suruz Miah
This paper presents a value iteration based approximate dynamic programming technique to solve the trajectory tracking problem of unicycle like wheeled mobile robots. Given a reference trajectory (2D), an error model is derived to form a nonlinear affine system. The robot is supposed to track the reference trajectory asymptotically. The solution of the error model is used to define the value function (cost-to-go function), which is a measure of the robot's tracking error and the cost of applying its actuator inputs (in this case, linear and angular velocities of the robot). A critic neural network approximates the value function to determine the optimal control inputs that are applied to the robot's actuators. A set of computer simulations is conducted to evaluate the performance of the proposed approximate dynamic programming method. The robot's trajectory tracking performance using the proposed method is also compared with that of the conventional approximate linearization technique in order to show the superiority of the value iteration based approximate dynamic programming.
本文提出了一种基于数值迭代的近似动态规划方法,用于解决单轮类轮式移动机器人的轨迹跟踪问题。给定参考轨迹(2D),导出误差模型,形成非线性仿射系统。假定机器人对参考轨迹进行渐近跟踪。误差模型的解用于定义价值函数(cost-to-go函数),它是机器人跟踪误差和应用其执行器输入的成本(在本例中为机器人的线速度和角速度)的度量。批评家神经网络逼近值函数,以确定应用于机器人执行器的最优控制输入。通过一组计算机仿真来评估所提出的近似动态规划方法的性能。通过与传统近似线性化方法的轨迹跟踪性能比较,证明了基于数值迭代的近似动态规划方法的优越性。
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引用次数: 1
Preparation for adulthood: Benefits of assistive technologies in social skills training of children with autism 为成年做准备:辅助技术在自闭症儿童社交技能训练中的益处
Pub Date : 2017-10-01 DOI: 10.1109/IRIS.2017.8250151
Rugayah Hashim, H. Yussof
Humanoids as a form of assistive technologies have been shown to have positive effects on the social-cognitive behavior of brain-impaired children, particularly those with autism. However, evidences on the socio-economic benefits in social-skill training on brain-impaired children have been lacking. At the preliminary stage, a case study of a primary school with special classes for gifted children is the case study for pretesting purposes. As it is, interviewers with teachers at the special integration classes form the basis for primary data collection. Findings indicated that the teachers, parents and guardians of these children are not ready for humanoids to train their children but in future such attempts are encouraged. Nonetheless, this paper will highlight the socio-economic benefits of humanoid-assisted social skills training of children with autism. This is important in preparing them for adulthood and independence. In addition, from the literature reviewed, content analyses on humanoid-mediated research articles provide the preliminary empirical support. Evidences and outcomes from similar research projects conducted from social scientists in developing nations further narrows the objectives of the investigation. Theoretical implication from this study is also discussed.
人形机器人作为一种辅助技术已经被证明对脑损伤儿童,特别是自闭症儿童的社会认知行为有积极的影响。然而,关于脑损伤儿童社会技能训练的社会经济效益的证据一直缺乏。在初步阶段,一所为资优儿童开设特殊班级的小学的案例研究是用于测试前目的的案例研究。事实上,在特殊整合课程中,与教师的访谈构成了初级数据收集的基础。调查结果表明,这些儿童的教师、家长和监护人还没有准备好让机器人训练他们的孩子,但今后鼓励这种尝试。尽管如此,本文将强调类人辅助自闭症儿童社交技能训练的社会经济效益。这对他们为成年和独立做准备是很重要的。此外,从文献综述中,对类人媒介研究文章的内容分析提供了初步的实证支持。来自发展中国家社会科学家的类似研究项目的证据和结果进一步缩小了调查的目标。本文还讨论了本研究的理论意义。
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引用次数: 1
期刊
2017 IEEE International Symposium on Robotics and Intelligent Sensors (IRIS)
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