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The Town Crier: A Use-Case Design and Implementation for a Socially Assistive Robot in Retirement Homes 城市信使养老院社交辅助机器人的用例设计与实施
Pub Date : 2024-04-09 DOI: 10.3390/robotics13040061
Ana Iglesias, Raquel Viciana, J. Pérez-Lorenzo, K. Ting, Alberto J. Tudela, Rebeca Marfil, Malak Qbilat, Antonio Hurtado, Antonio Jerez, J. P. Bandera
The use of new assistive technologies in general, and Socially Assistive Robots (SARs) in particular, is becoming increasingly common for supporting people’s health and well-being. However, it still faces many issues regarding long-term adherence, acceptability and utility. Most of these issues are due to design processes that insufficiently take into account the needs, preferences and values of intended users. Other issues are related to the currently very limited amount of long-term evaluations, performed in real-world settings, for SARs. This study presents the results of two regional projects that consider as a starting hypothesis that the assessment in controlled environments and/or with short exposures may not be enough in the design of an SAR deployed in a retirement home and the necessity of designing for and with users. Thus, the proposed methodology has focused on use-cases definitions that follow a human-centred and participatory design approach. The main goals have been facilitating system acceptance and attachment by involving stakeholders in the robots design and evaluation, overcoming usage barriers and considering user’s needs integration. The implementation of the first use-case deployed and the two-phase pilot test performed in a retirement home are presented. In particular, a detailed description of the interface redesign process based on improving a basic prototype with users’ feedback and recommendations is presented, together with the main results of a formal evaluation that has highlighted the impact of changes and improvements addressed in the first redesign loop of the system.
新辅助技术,特别是社会辅助机器人(SAR)的使用越来越普遍,为人们的健康和福祉提供支持。然而,在长期使用、可接受性和实用性方面仍面临许多问题。这些问题大多是由于设计过程没有充分考虑到预期用户的需求、偏好和价值观造成的。其他问题则与目前在真实世界环境中对 SAR 进行的长期评估数量非常有限有关。本研究介绍了两个地区性项目的成果,这两个项目的出发假设是,在受控环境和/或短时间暴露下进行的评估可能不足以设计出部署在养老院的合成孔径雷达,而且有必要为用户并与用户一起进行设计。因此,建议的方法侧重于使用案例的定义,遵循以人为本和参与式的设计方法。主要目标是通过让利益相关者参与机器人的设计和评估、克服使用障碍和考虑用户的需求整合,促进系统的接受和附着。本报告介绍了第一个使用案例的实施情况,以及在一家养老院进行的两个阶段的试点测试。特别是,详细介绍了根据用户反馈和建议改进基本原型的界面重新设计过程,以及正式评估的主要结果,该评估强调了系统第一次重新设计循环中的更改和改进所产生的影响。
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引用次数: 0
A Framework for Modeling, Optimization, and Musculoskeletal Simulation of an Elbow–Wrist Exosuit 肘腕防弹衣的建模、优化和肌肉骨骼模拟框架
Pub Date : 2024-04-06 DOI: 10.3390/robotics13040060
Ali KhalilianMotamed Bonab, D. Chiaradia, A. Frisoli, D. Leonardis
The light weight and compliance of exosuits are valuable benefits not present rigid exoskeleton devices, yet these intriguing features make it challenging to properly model and simulate their interaction with the musculoskeletal system. Tendon-driven exosuits adopt an electrical motor combined with pulleys and cable transmission in the actuation stage. An important aspect of the design of these systems for the load transfer efficacy and comfort of the user is the anchor point positioning. In this paper, we propose a framework, whose first purpose is as a design methodology for the synthesis of an exosuit device, achieved by optimizing the anchor point location. The optimization procedure finds the best 3D position of the anchor points based on the interaction forces between the exosuit and the upper arm. The computation of the forces is based on the combination of a mathematical model of a wrist–elbow exosuit and a dynamic model of the upper arm. Its second purpose is the simulation of the kinematic and physiological effects of the interaction between the arm, the exosuit, and the complex upper limb musculoskeletal system. It offers insights into muscular and exoskeleton loading during operation. The presented experiments involve the development and validation of personalized musculoskeletal models, with kinematic, anthropometric, and electromyographic data measured in a load-lifting task. Simulation of the exosuit operation—coupled with the musculoskeletal model—showed the efficacy of the suit in assisting the wrist and elbow muscles and provided interesting highlights about the impact of the assistance on shoulder muscles. Finally, we provide a possible design of an elbow and wrist exosuit based on the optimized results.
外骨骼装置重量轻、顺应性好,这些都是刚性外骨骼装置所不具备的宝贵优势,然而,这些引人入胜的特点却使得对其与肌肉骨骼系统的相互作用进行适当建模和仿真具有挑战性。肌腱驱动的外骨骼装置在驱动阶段采用了与滑轮和电缆传输相结合的电机。这些系统设计的一个重要方面是锚点定位,以保证负载传递的有效性和使用者的舒适性。在本文中,我们提出了一个框架,其首要目的是作为一种设计方法,通过优化锚点位置来合成外穿式装置。优化程序根据外衣与上臂之间的相互作用力,找到锚点的最佳三维位置。力的计算基于腕肘外衣数学模型和上臂动态模型的结合。其第二个目的是模拟手臂、外穿衣和复杂的上肢肌肉骨骼系统之间相互作用的运动学和生理学效应。它有助于深入了解操作过程中的肌肉和外骨骼负载情况。所介绍的实验涉及个性化肌肉骨骼模型的开发和验证,以及在举重任务中测量的运动学、人体测量学和肌电图数据。结合肌肉骨骼模型模拟外骨骼服的操作,显示了外骨骼服在辅助腕部和肘部肌肉方面的功效,并就辅助对肩部肌肉的影响提供了有趣的亮点。最后,我们根据优化结果提供了肘部和腕部外衣的可能设计方案。
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引用次数: 0
Exploring Saliency for Learning Sensory-Motor Contingencies in Loco-Manipulation Tasks 探索在定位操纵任务中学习感官-运动权变的显著性
Pub Date : 2024-04-01 DOI: 10.3390/robotics13040058
E. Stefanini, G. Lentini, G. Grioli, M. G. Catalano, A. Bicchi
The objective of this paper is to propose a framework for a robot to learn multiple Sensory-Motor Contingencies from human demonstrations and reproduce them. Sensory-Motor Contingencies are a concept that describes intelligent behavior of animals and humans in relation to their environment. They have been used to design control and planning algorithms for robots capable of interacting and adapting autonomously. However, enabling a robot to autonomously develop Sensory-Motor Contingencies is challenging due to the complexity of action and perception signals. This framework leverages tools from Learning from Demonstrations to have the robot memorize various sensory phases and corresponding motor actions through an attention mechanism. This generates a metric in the perception space, used by the robot to determine which sensory-motor memory is contingent to the current context. The robot generalizes the memorized actions to adapt them to the present perception. This process creates a discrete lattice of continuous Sensory-Motor Contingencies that can control a robot in loco-manipulation tasks. Experiments on a 7-dof collaborative robotic arm with a gripper, and on a mobile manipulator demonstrate the functionality and versatility of the framework.
本文旨在提出一个框架,让机器人从人类的演示中学习多种感官-运动权变,并再现这些权变。感官-运动权变是一个描述动物和人类与环境相关的智能行为的概念。它们已被用于为能够自主互动和适应的机器人设计控制和规划算法。然而,由于行动和感知信号的复杂性,让机器人自主开发感知-运动权变具有挑战性。本框架利用从演示中学习的工具,让机器人通过注意力机制记忆各种感官阶段和相应的运动动作。这将在感知空间中生成一个度量,机器人可利用该度量来确定哪些感官-运动记忆与当前情境相关。机器人对记忆中的动作进行概括,使其适应当前的感知。这一过程创建了一个连续感觉-运动权变的离散网格,可以控制机器人完成定位操纵任务。在一个带抓手的七人协作机械臂和一个移动机械手上进行的实验证明了该框架的功能性和通用性。
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引用次数: 0
Bimanual Telemanipulation Framework Utilising Multiple Optically Localised Cooperative Mobile Manipulators 利用多个光学定位合作移动机械手的双臂遥控框架
Pub Date : 2024-04-01 DOI: 10.3390/robotics13040059
C. Peers, Chengxu Zhou
Bimanual manipulation is valuable for its potential to provide robots in the field with increased capabilities when interacting with environments, as well as broadening the number of possible manipulation actions available. However, for a robot to perform bimanual manipulation, the system must have a capable control framework to localise and generate trajectories and commands for each sub-system to allow for successful cooperative manipulation as well as sufficient control over each individual sub-system. The proposed method suggests using multiple mobile manipulator platforms coupled through the use of an optical tracking localisation method to act as a single bimanual manipulation system. The framework’s performance relies on the accuracy of the localisation. As commands are primarily high-level, it is possible to use any number and combination of mobile manipulators and fixed manipulators within this framework. We demonstrate the functionality of this system through tests in a Pybullet simulation environment using two different omnidirectional mobile manipulators, as well a real-life experiment using two quadrupedal manipulators.
双臂操纵的价值在于,它有可能提高机器人在现场与环境互动的能力,并扩大可能的操纵动作的数量。不过,要让机器人执行双臂操作,系统必须具备一个有效的控制框架,为每个子系统定位并生成轨迹和指令,以便成功进行合作操作,并对每个子系统进行充分控制。所提出的方法建议使用多个移动机械手平台,通过使用光学跟踪定位方法将其耦合为单一的双臂操纵系统。该框架的性能取决于定位的准确性。由于指令主要是高级指令,因此可以在该框架内使用任意数量和组合的移动机械手和固定机械手。我们通过在 Pybullet 模拟环境中使用两个不同的全向移动机械手进行测试,以及使用两个四足机械手进行实际实验,展示了该系统的功能。
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引用次数: 0
Investigation of the Effectiveness of the Robotic ReStore Soft Exoskeleton in the Development of Early Mobilization, Walking, and Coordination of Stroke Patients: A Randomized Clinical Trial 机器人 ReStore 软外骨架对中风患者早期活动、行走和协调能力发展的有效性研究:随机临床试验
Pub Date : 2024-03-05 DOI: 10.3390/robotics13030044
Szilvia Kóra, Adrienn Bíró, Nándor Prontvai, Mónika Androsics, István Drotár, Péter Prukner, T. Haidegger, Klaudia Széphelyi, J. Tollár
Medical robotics nowadays can prevent, treat, or alleviate numerous severe conditions, including the dire consequences of stroke. Our objective was to determine the effect of employing a robotic soft exoskeleton in therapy on the development of the early mobilization, gait, and coordination in stroke patients. The ReStore™ Soft Exo-Suit, a wearable exosuit developed by a leading company with exoskeleton technology, was utilized. It is a powered, lightweight device intended for use in stroke rehabilitation for people with lower limb disability. We performed a randomized clinical intervention, using a before–after trial design in a university hospital setting. A total of 48 patients with a history of stroke were included, of whom 39 were randomized and 30 completed the study. Interventions: Barthel Index and modified Rankin scale (mRS) patients were randomly assigned to a non-physical intervention control (n = 9 of 39 completed, 30 withdrew before baseline testing), or to a high-intensity agility program (15 sessions, 5 weeks, n = 30 completed). The main focus of assessment was on the Modified Rankin Scale. Additionally, we evaluated secondary factors including daily life functionality, five dimensions of health-related quality of life, the Beck depression inventory, the 6 min walk test (6MWT), the Berg Balance Scale (BBS), and static balance (center of pressure). The Robot-Assisted Gait Therapy (ROB/RAGT) program led to significant improvements across various measures, including a 37% improvement in Barthel Index scores, a 56% increase in 10 m walking speed, and a 68% improvement in 6 min walking distance, as well as notable enhancements in balance and stability. Additionally, the intervention group demonstrated significant gains in all these aspects compared to the control group. In conclusion, the use of robotic therapy can be beneficial in stroke rehabilitation. These devices support the restoration and improvement of movement in various ways and contribute to restoring balance and stability.
如今,医疗机器人技术可以预防、治疗或缓解许多严重疾病,包括中风的严重后果。我们的目标是确定在治疗中使用软外骨骼机器人对中风患者早期移动、步态和协调能力发展的影响。我们使用了 ReStore™ 软外骨骼服,它是由一家拥有外骨骼技术的领先公司开发的可穿戴外骨骼服。它是一种动力驱动的轻型装置,用于下肢残疾患者的中风康复。我们在一家大学医院进行了随机临床干预,采用了前后试验设计。共纳入了 48 名有中风病史的患者,其中 39 人被随机分配,30 人完成了研究。干预措施Barthel 指数和改良 Rankin 量表(mRS)患者被随机分配到非体育干预对照组(39 人中有 9 人完成,30 人在基线测试前退出)或高强度敏捷计划(15 节课,5 周,有 30 人完成)。评估的重点是改良朗肯量表。此外,我们还评估了次要因素,包括日常生活功能、健康相关生活质量的五个维度、贝克抑郁量表、6 分钟步行测试 (6MWT)、伯格平衡量表 (BBS) 和静态平衡(压力中心)。机器人辅助步态疗法(ROB/RAGT)项目在各项指标上都取得了显著改善,包括巴特尔指数评分提高了 37%,10 米步行速度提高了 56%,6 分钟步行距离提高了 68%,平衡性和稳定性也明显增强。此外,与对照组相比,干预组在所有这些方面都有显著提高。总之,使用机器人疗法有利于中风康复。这些设备以各种方式支持恢复和改善运动,并有助于恢复平衡和稳定性。
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引用次数: 0
Double-Layer RRT* Objective Bias Anytime Motion Planning Algorithm 双层 RRT* 目标偏差随时运动规划算法
Pub Date : 2024-03-01 DOI: 10.3390/robotics13030041
Hamada Esmaiel, Guolin Zhao, Zeyad A. H. Qasem, Jie Qi, Haixin Sun
This paper proposes a double-layer structure RRT* algorithm based on objective bias called DOB-RRT*. The algorithm adopts an initial path with an online optimization structure for motion planning. The first layer of RRT* introduces a feedback-based objective bias strategy with segment forward pruning processing to quickly obtain a smooth initial path. The second layer of RRT* uses the heuristics of the initial tree structure to optimize the path by using reverse maintenance strategies. Compared with conventional RRT and RRT* algorithms, the proposed algorithm can obtain the initial path with high quality, and it can quickly converge to the progressive optimal path during the optimization process. The performance of the proposed algorithm is effectively evaluated and tested in real experiments on an actual wheeled robotic vehicle running ROS Kinetic in a real environment.
本文提出了一种基于目标偏置的双层结构 RRT* 算法,称为 DOB-RRT*。该算法采用在线优化结构的初始路径进行运动规划。RRT* 的第一层引入了基于反馈的目标偏置策略,并进行分段前向剪枝处理,以快速获得平滑的初始路径。RRT* 的第二层利用初始树结构的启发式方法,通过反向维护策略来优化路径。与传统的 RRT 算法和 RRT* 算法相比,所提出的算法能获得高质量的初始路径,并能在优化过程中快速收敛到渐进最优路径。在真实环境下运行 ROS Kinetic 的实际轮式机器人车辆上,对所提出算法的性能进行了有效评估和实际实验测试。
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引用次数: 0
A Bi-Invariant Approach to Approximate Motion Synthesis of Planar Four-Bar Linkage 平面四杆连杆机构近似运动合成的双不变方法
Pub Date : 2024-01-10 DOI: 10.3390/robotics13010013
Tianze Xu, D. Myszka, Andrew P. Murray
This paper presents a planar four-bar approximate motion synthesis technique that uses only pole locations. Synthesis for rigid-body guidance determines the linkage dimensions that guide a body in a desired manner. The desired motion is specified with task positions including a location and orientation angle. Approximation motion synthesis is necessary when an exact match to the task positions cannot be obtained. A linkage that achieves the task positions as closely as possible becomes desired. Structural error refers to the deviations between the task positions and the linkage’s generated positions. A challenge in approximate motion synthesis is that structural error involves metrics that include location and orientation. A best-fit solution is not evident because the structural error is based on an objective function that combines the location and orientation. Such solutions lack bi-invariance because a change in reference for the motion changes the values of the metric. This work uses only displacement poles, described solely by their coordinates, as they sufficiently characterize the relative task positions. The optimization seeks to minimize the distance between the poles of the task positions and the poles of the generated positions. The use of poles results in a bi-invariant statement of the problem.
本文介绍了一种仅使用极点位置的平面四杆近似运动合成技术。用于刚体引导的合成确定了以所需方式引导车身的联动尺寸。所需的运动由包括位置和方向角在内的任务位置指定。当无法精确匹配任务位置时,就需要进行近似运动合成。一个尽可能接近任务位置的联动装置就成为了理想选择。结构误差是指任务位置与联动装置生成位置之间的偏差。近似运动合成所面临的一个挑战是,结构误差涉及包括位置和方向在内的指标。由于结构误差是基于结合位置和方向的目标函数,因此最佳拟合解决方案并不明显。这种解决方案缺乏双不变性,因为运动参考点的改变会改变度量值。这项工作只使用位移极点,只用它们的坐标来描述,因为它们能充分表征相对任务位置。优化的目的是最小化任务位置极点与生成位置极点之间的距离。极点的使用使得问题的表述具有双不变性。
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引用次数: 0
A Survey of Machine Learning Approaches for Mobile Robot Control 移动机器人控制的机器学习方法概览
Pub Date : 2024-01-09 DOI: 10.3390/robotics13010012
M. Rybczak, Natalia Popowniak, A. Lazarowska
Machine learning (ML) is a branch of artificial intelligence that has been developing at a dynamic pace in recent years. ML is also linked with Big Data, which are huge datasets that need special tools and approaches to process them. ML algorithms make use of data to learn how to perform specific tasks or make appropriate decisions. This paper presents a comprehensive survey of recent ML approaches that have been applied to the task of mobile robot control, and they are divided into the following: supervised learning, unsupervised learning, and reinforcement learning. The distinction of ML methods applied to wheeled mobile robots and to walking robots is also presented in the paper. The strengths and weaknesses of the compared methods are formulated, and future prospects are proposed. The results of the carried out literature review enable one to state the ML methods that have been applied to different tasks, such as the following: position estimation, environment mapping, SLAM, terrain classification, obstacle avoidance, path following, learning to walk, and multirobot coordination. The survey allowed us to associate the most commonly used ML algorithms with mobile robotic tasks. There still exist many open questions and challenges such as the following: complex ML algorithms and limited computational resources on board a mobile robot; decision making and motion control in real time; the adaptability of the algorithms to changing environments; the acquisition of large volumes of valuable data; and the assurance of safety and reliability of a robot’s operation. The development of ML algorithms for nature-inspired walking robots also seems to be a challenging research issue as there exists a very limited amount of such solutions in the recent literature.
机器学习(ML)是人工智能的一个分支,近年来发展迅猛。机器学习也与大数据有关,大数据是需要特殊工具和方法来处理的巨大数据集。ML 算法利用数据来学习如何执行特定任务或做出适当决策。本文对最近应用于移动机器人控制任务的 ML 方法进行了全面调查,这些方法分为以下几种:监督学习、无监督学习和强化学习。文中还介绍了应用于轮式移动机器人和步行机器人的 ML 方法的区别。文中阐述了比较方法的优缺点,并提出了未来展望。根据文献综述的结果,我们可以指出应用于不同任务的 ML 方法,例如:位置估计、环境映射、SLAM、地形分类、避障、路径跟踪、步行学习和多机器人协调。通过调查,我们将最常用的 ML 算法与移动机器人任务联系起来。目前仍有许多悬而未决的问题和挑战,例如:移动机器人上复杂的 ML 算法和有限的计算资源;实时决策和运动控制;算法对不断变化的环境的适应性;获取大量有价值的数据;以及确保机器人运行的安全性和可靠性。为受自然启发的行走机器人开发 ML 算法似乎也是一个具有挑战性的研究课题,因为近期文献中此类解决方案的数量非常有限。
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引用次数: 0
A Critical Review and Systematic Design Approach for Linkage-Based Gait Rehabilitation Devices 基于链接的步态康复设备的严格审查和系统设计方法
Pub Date : 2024-01-03 DOI: 10.3390/robotics13010011
Thiago Sá de Paiva, R. S. Gonçalves, Giuseppe Carbone
This study aims to provide a comprehensive critical review of the existing body of evidence pertaining to gait rehabilitation. It also seeks to introduce a systematic approach for the development of innovative design solutions in this domain. The field of gait rehabilitation has witnessed a surge in the development of novel robotic devices. This trend has emerged in response to limitations observed in most commercial solutions, particularly regarding their high costs. Consequently, there is a growing need to explore more cost-effective alternatives and create opportunities for greater accessibility. Within the realm of cost-effective options, linkage-based gait trainers have emerged as viable alternatives, prompting a thorough examination of this category, which is carried out in this work. Notably, there is a wide heterogeneity in research approaches and presentation methods. This divergence has prompted discourse regarding the standardization of key elements relevant to the proposals of new linkage-based devices. As a result, this study proposes a comprehensive and standardized design process and offers a brief illustration of the application of this design process through the presentation of a potential new design.
本研究旨在对与步态康复有关的现有证据进行全面的批判性审查。此外,它还试图为该领域创新设计方案的开发引入一种系统方法。在步态康复领域,新型机器人设备的开发激增。这一趋势的出现是为了应对大多数商业解决方案的局限性,尤其是其高昂的成本。因此,人们越来越需要探索更具成本效益的替代方案,并为更大的可及性创造机会。在具有成本效益的方案中,基于联动技术的步态训练器已成为可行的替代方案,这促使我们在本研究中对这一类别进行深入研究。值得注意的是,在研究方法和展示方式上存在着很大的差异。这种差异引发了有关新的基于链接的设备提案的关键要素标准化的讨论。因此,本研究提出了一个全面的标准化设计流程,并通过展示一个潜在的新设计,简要说明了该设计流程的应用。
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引用次数: 0
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Robotics
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