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The implementation and performance evaluation for a smart robot with edge computing algorithms 基于边缘计算算法的智能机器人的实现与性能评估
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-07-15 DOI: 10.1108/ir-02-2022-0045
J. Chen, Ping-Feng Huang, Chung-Sheng Pi
PurposeApart from, the smart edge computing (EC) robot (SECR) provides the tools to manage Internet of things (IoT) services in the edge landscape by means of real-world test-bed designed in ECR. Eventually, based on the results from two experiments held in little constrained condition, such as the maximum data size is 2GB, the performance of the proposed techniques demonstrate the effectiveness, scalability and performance efficiency of the proposed IoT model.Design/methodology/approachCertainly, the proposed SECR is trying primarily to take over other traditional static robots in a centralized or distributed cloud environment. One aspect of representation of the proposed edge computing algorithms is due to challenge to slow down the consumption of time which happened in an artificial intelligence (AI) robot system. Thus, the developed SECR trained by tiny machine learning (TinyML) techniques to develop a decentralized and dynamic software environment.FindingsSpecifically, the waste time of SECR has actually slowed down when it is embedded with Edge Computing devices in the demonstration of data transmission within different paths. The TinyML is applied to train with image data sets for generating a framework running in the SECR for the recognition which has also proved with a second complete experiment.Originality/valueThe work presented in this paper is the first research effort, and which is focusing on resource allocation and dynamic path selection for edge computing. The developed platform using a decoupled resource management model that manages the allocation of micro node resources independent of the service provisioning performed at the cloud and manager nodes. Besides, the algorithm of the edge computing management is established with different path and pass large data to cloud and receive it. In this work which considered the SECR framework is able to perform the same function as that supports to the multi-dimensional scaling (MDS).
除此之外,智能边缘计算(EC)机器人(SECR)通过在ECR中设计的真实测试平台,提供了在边缘环境中管理物联网(IoT)服务的工具。最后,基于在最小约束条件下(如最大数据大小为2GB)进行的两个实验的结果,所提出的技术的性能证明了所提出的物联网模型的有效性、可扩展性和性能效率。设计/方法论/方法当然,拟议的SECR主要试图在集中式或分布式云环境中接管其他传统的静态机器人。所提出的边缘计算算法表示的一个方面是由于减缓人工智能(AI)机器人系统中发生的时间消耗的挑战。因此,开发的SECR通过微型机器学习(TinyML)技术进行训练,以开发分散和动态的软件环境。具体而言,在不同路径的数据传输演示中,嵌入边缘计算设备后,SECR的浪费时间实际上有所减缓。应用TinyML对图像数据集进行训练,生成在SECR中运行的识别框架,并通过第二次完整实验证明了该框架的有效性。本文是针对边缘计算资源分配和动态路径选择的初步研究工作。开发的平台使用解耦的资源管理模型,该模型管理独立于云和管理节点上执行的服务供应的微节点资源分配。此外,采用不同路径建立边缘计算管理算法,将大数据传递到云端接收。在本研究中,考虑了SECR框架能够执行与支持多维缩放(MDS)相同的功能。
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引用次数: 1
A novel soft gripper with enhanced gripping adaptability based on spring-reinforced soft pneumatic actuators 一种基于弹簧增强软气动执行器的增强夹持适应性的新型软夹持器
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-07-14 DOI: 10.1108/ir-04-2022-0103
Peilin Cheng, Yuze Ye, B. Yan, Yebo Lu, Chuanyu Wu
PurposeSoft grippers have safer and more adaptable human–machine and environment–machine interactions than rigid grippers. However, most soft grippers with single gripping postures have a limited gripping range. Therefore, this paper aims to design a soft gripper with variable gripping posture to enhance the gripping adaptability.Design/methodology/approachThis paper proposes a novel soft gripper consisting of a conversion mechanism and four spring-reinforced soft pneumatic actuators (SSPAs) as soft fingers. By adjusting the conversion mechanism, four gripping postures can be achieved to grip objects of different shapes, sizes and weights. Furthermore, a quasi-static model is established to predict the bending deformation of the finger. Finally, the bending angle of the finger is measured to validate the accuracy of the quasi-static model. The gripping force and gripping adaptability are tested to explore the gripping performance of the gripper.FindingsThrough experiments, the results have shown that the quasi-static model can accurately predict the deformation of the finger; the gripper has the most significant gripping force under the parallel posture, and the gripping adaptability of the gripper is highly enhanced by converting the four gripping postures.Originality/valueBy increasing the gripping posture, a novel soft gripper with enhanced gripping adaptability is proposed to enlarge the gripping range of the soft gripper with a single posture. Furthermore, a quasi-static model is established to analyze the deformation of SSPA.
软爪比刚性爪具有更安全、适应性更强的人机交互和环境-机器交互。然而,大多数单一抓握姿势的软抓握器的抓握范围有限。因此,本文旨在设计一种可变夹持姿态的软夹持器,以提高夹持适应性。设计/方法/方法本文提出了一种由转换机构和四个弹簧增强软气动执行器(sspa)作为软手指组成的新型软夹持器。通过调整转换机构,可以实现四种抓取姿势,以抓取不同形状、大小和重量的物体。此外,还建立了一个准静态模型来预测手指的弯曲变形。最后,测量了手指弯曲角度,验证了准静态模型的准确性。通过对夹持力和夹持适应性的测试,探索夹持器的夹持性能。通过实验,结果表明,准静态模型可以准确预测手指的变形;夹持器在平行姿态下夹持力最大,四种夹持姿势转换后,夹持器的夹持适应性大大增强。独创性/价值通过增加夹持姿态,提出一种具有增强夹持适应性的新型软夹持器,以扩大单姿态软夹持器的夹持范围。此外,还建立了准静态模型来分析SSPA的变形。
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引用次数: 0
A hybrid obstacle avoidance method for mobile robot navigation in unstructured environment 一种非结构化环境下移动机器人导航的混合避障方法
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-07-12 DOI: 10.1108/ir-04-2022-0102
Huaidong Zhou, Pengbo Feng, Wusheng Chou
PurposeWheeled mobile robots (WMR) are the most widely used robots. Avoiding obstacles in unstructured environments, especially dynamic obstacles such as pedestrians, is a serious challenge for WMR. This paper aims to present a hybrid obstacle avoidance method that combines an informed-rapidly exploring random tree* algorithm with a three-dimensional (3D)-object detection approach and model prediction controller (MPC) to conduct obstacle perception, collision-free path planning and obstacle avoidance for WMR in unstructured environments.Design/methodology/approachGiven a reference orientation and speed, the hybrid method uses parametric ellipses to represent obstacle expansion boundaries based on the 3D target detection results, and a collision-free reference path is planned. Then, the authors build on a model predictive control for tracking the collision-free reference path by incorporating the distance between the robot and obstacles. The proposed framework is a mapless method for WMR.FindingsThe authors present experimental results with a mobile robot for obstacle avoidance in indoor environments crowded with obstacles, such as chairs and pedestrians. The results show that the proposed hybrid obstacle avoidance method can satisfy the application requirements of mobile robots in unstructured environments.Originality/valueIn this study, the parameter ellipse is used to represent the area occupied by the obstacle, which takes the velocity as the parameter. Therefore, the motion direction and position of dynamic obstacles can be considered in the planning stage, which enhances the success rate of obstacle avoidance. In addition, the distance between the obstacle and robot is increased in the MPC optimization function to ensure a safe distance between the robot and the obstacle.
目的轮式移动机器人(WMR)是应用最广泛的机器人。避开非结构化环境中的障碍物,特别是行人等动态障碍物,是WMR面临的严峻挑战。本文旨在提出一种混合避障方法,该方法将知情快速探索随机树*算法与三维(3D)目标检测方法和模型预测控制器(MPC)相结合,对非结构化环境下的WMR进行障碍物感知、无碰撞路径规划和避障。设计/方法/方法在给定参考方向和速度的情况下,根据三维目标检测结果,采用参数化椭圆表示障碍物扩展边界,规划无碰撞参考路径。然后,作者建立了一个模型预测控制,通过结合机器人与障碍物之间的距离来跟踪无碰撞参考路径。该框架是WMR的一种无映射方法。作者展示了一个移动机器人在室内拥挤的障碍物环境中避障的实验结果,比如椅子和行人。结果表明,所提出的混合避障方法能够满足移动机器人在非结构化环境中的应用需求。原创性/价值在本研究中,以速度为参数,采用参数椭圆表示障碍物所占的面积。因此,在规划阶段可以考虑动态障碍物的运动方向和位置,提高了避障成功率。此外,在MPC优化函数中增加了障碍物与机器人之间的距离,保证了机器人与障碍物之间的安全距离。
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引用次数: 3
An intelligent fast controller for autonomous wheeled robot path navigation in challenging environments 一种用于轮式机器人自主路径导航的智能快速控制器
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-07-07 DOI: 10.1108/ir-01-2022-0026
Subhradip Mukherjee, R. Kumar, Siddhanta Borah
PurposeThis paper aims to incorporate one intelligent particle swarm optimization (IPSO) controller to realize an optimum path in unknown environments. In this paper, the fitness function of IPSO is designed with intelligent design parameters, solving the path navigation problem of an autonomous wheeled robot towards the target point by avoiding obstacles in any unknown environment.Design/methodology/approachThis controller depends on randomly oriented positions with all other position information and a fitness function. Evaluating the position’s best values, this study gets the local best values, and finally, the global best value is updated as the current value after comparing the local best values.FindingsThe path navigation of the proposed controller has been compared with particle swarm optimization algorithm, BAT algorithm, flower pollination algorithm, invasive weed algorithm and genetic algorithm in multiple challenging environments. The proposed controller shows the percent deviation in path length near 14.54% and the percent deviation in travel time near 4% after the simulation. IPSO is applied to optimize said parameters for path navigation of the wheeled robot in different simulation environments.Originality/valueA hardware model with a 32-bit ARM board interfaced with a global positioning system (GPS) module, an ultrasonic module and ZigBee wireless communication module is designed to implement IPSO. In real-time, the IPSO controller shows the percent deviation in path length near 9%.
目的结合智能粒子群优化(IPSO)控制器实现未知环境下的最优路径。本文采用智能设计参数设计IPSO适应度函数,解决了自主轮式机器人在任何未知环境中避障向目标点的路径导航问题。设计/方法/方法该控制器依赖于随机定向的位置以及所有其他位置信息和适应度函数。通过对位置的最优值进行评估,得到局部最优值,最后通过对局部最优值的比较,将全局最优值更新为当前值。在多个具有挑战性的环境下,将所提出控制器的路径导航与粒子群优化算法、BAT算法、花卉授粉算法、入侵杂草算法和遗传算法进行了比较。仿真结果表明,该控制器的路径长度偏差百分比接近14.54%,行程时间偏差百分比接近4%。应用IPSO对上述参数进行优化,实现轮式机器人在不同仿真环境下的路径导航。为实现IPSO,设计了一个32位ARM板与全球定位系统(GPS)模块、超声波模块和ZigBee无线通信模块接口的硬件模型。在实时情况下,IPSO控制器显示的路径长度偏差百分比接近9%。
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引用次数: 2
Optimization of mechanical performance of a Bernoulli gripper based on the force characteristic curve synthesis method 基于力特性曲线综合法的伯努利夹持器力学性能优化
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-07-05 DOI: 10.1108/ir-01-2022-0010
Xubo Yu, Jianghong Zhao, Xin Li
PurposeThe Bernoulli gripper fixedly installed on the manipulator is subject to limitations such as a small-working region and poor anti-interference capacity. This paper aims to propose a novel Bernoulli gripper design that involves the connection of a positive stiffness component such as a spring in series, based on the force characteristic curve synthesis method, to optimize the mechanical performance.Design/methodology/approachThe proposed gripper is designed and manufactured. In the suction procedure, the force characteristic curve of the proposed gripper is theoretically and experimentally investigated. In the hovering detection procedure, a dynamic model of the manipulator-gripper-workpiece system is established, and an apparatus is set up to compare the displacements of the workpiece and the manipulator. The proposed gripper is finally applied in the lifting procedure, showing good impact resistance.FindingsThe optimization of mechanical performance of the proposed gripper is realized. The proposed gripper has the effect of increasing the stiffness of the negative stiffness part of the force characteristic curve and reducing the stiffness of the positive stiffness part, increasing the working region. The stability and the anti-interference ability of the workpiece under high-frequency vibration are improved. Meanwhile, the impact resistance in the lifting procedure is enhanced, compared with the original one.Originality/valueThis research proposes a novel design for the Bernoulli grippers to optimize the mechanical performance. The proposed gripper has advantages of a larger working region, better anti-interference ability and better impact resistance. These findings serve as important theoretical and experimental references for the design of the Bernoulli gripper.
目的固定安装在机械手上的伯努利夹持器存在工作区域小、抗干扰能力差等局限性。本文旨在提出一种基于力特性曲线综合方法的新型伯努利夹持器设计,该设计涉及弹簧等正刚度部件的串联连接,以优化其力学性能。设计/方法/方法设计和制造了所提出的夹持器。在吸力过程中,对该夹持器的力特性曲线进行了理论和实验研究。在悬停检测过程中,建立了机械手-夹持器-工件系统的动力学模型,并建立了工件与机械手位移比较装置。所设计的夹持器最终在提升过程中得到应用,具有良好的抗冲击性能。结果实现了夹持器力学性能的优化。所提出的夹持器具有增大力特性曲线负刚度部分刚度、减小正刚度部分刚度、增大工作面积的作用。提高了工件在高频振动下的稳定性和抗干扰能力。同时,在提升过程中,与原结构相比,抗冲击性得到了提高。独创性/价值本研究提出了一种新颖的伯努利夹持器设计,以优化其机械性能。该夹持器具有工作区域大、抗干扰能力强、抗冲击能力强等优点。这些研究结果为伯努利夹持器的设计提供了重要的理论和实验参考。
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引用次数: 1
Spatial positioning robotic system for autonomous inspection of LPG tanks 用于LPG储罐自主检测的空间定位机器人系统
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-06-28 DOI: 10.1108/ir-03-2022-0076
Jie Li, Jiyuan Wu, Chunlei Tu, Xingsong Wang
PurposeAutomatic robots can improve the efficiency of liquefied petroleum gas (LPG) tank inspection and maintenance, but it is difficult to achieve high-precision spatial positioning and navigation on tank surfaces. The purpose of this paper is to develop a spatial positioning robotic system for tank inspection. The robot can accurately identify and track weld paths. The positioning system can complete robot’s spatial positioning on tank surfaces.Design/methodology/approachA tank inspection robot with curvature-adaptive transmission mechanisms is designed in this study. A weld path recognition method based on deep learning is proposed to accurately identify and extract weld paths. Integrated multiple sensors, the positioning system is developed to improve the robot’s spatial positioning accuracy. Experiments are conducted on a cylindrical tank to test weld seam tracking accuracy and spatial positioning performance of the robotic system. The practicality of the robotic system is then verified in field tests.FindingsThe robot can accurately identify and track weld seams with a maximum drift angle of 4° and a maximum offset distance of ±30 mm. The positioning system has excellent positioning accuracy and stability. The maximum angle and height errors are 3° and 0.08 m, respectively.Originality/valueThe positioning system can improve the autonomous performance of inspection robots and solve the problems of weld path recognition and spatial positioning. Application of the robotic system can promote the automatic inspection and maintenance of LPG tanks.
目的自动化机器人可以提高液化石油气(LPG)储罐检测和维护的效率,但在储罐表面难以实现高精度的空间定位和导航。本文的目的是开发一种用于油罐检测的空间定位机器人系统。该机器人能够准确地识别和跟踪焊接路径。该定位系统可以完成机器人在罐体表面的空间定位。本文设计了一种具有曲率自适应传动机构的油罐检测机器人。为了准确识别和提取焊缝路径,提出了一种基于深度学习的焊缝路径识别方法。为了提高机器人的空间定位精度,开发了集成多个传感器的定位系统。在圆柱形储罐上进行了实验,测试了机器人系统的焊缝跟踪精度和空间定位性能。然后在现场测试中验证了机器人系统的实用性。该机器人可以准确识别和跟踪焊缝,最大漂移角为4°,最大偏移距离为±30 mm。该定位系统具有良好的定位精度和稳定性。最大角度和高度误差分别为3°和0.08 m。该定位系统可以提高检测机器人的自主性能,解决焊缝路径识别和空间定位问题。机器人系统的应用可以促进LPG储罐的自动检测和维护。
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引用次数: 1
The Pransky interview: Harry Kloor, PhD, PhD - CEO and Co-Founder, Beyond Imagination Inc.; scientist; entrepreneur; inventor; filmmaker Pransky采访:Harry Kloor,博士,Beyond Imagination Inc.首席执行官兼联合创始人;科学家;企业家;发明家;导演
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-06-27 DOI: 10.1108/ir-06-2022-0148
Joanne Pransky
PurposeThe following article is a “Q&A interview” conducted by Joanne Pransky of Industrial Robot Journal as a method to impart the combined technological, business and personal experience of a prominent, robotic industry PhD-turned successful innovator and entrepreneur regarding turning his lifelong dream into an invention and commercialized product. This paper aims to discuss these issues.Design/methodology/approachHarry Kloor is a successful serial entrepreneur, scientist, technologist, educator, policy advisor, author and Hollywood filmmaker. He is the CEO and co-founder of Beyond Imagination, a company that has developed a suite of exponential technology solutions that deploys artificial intelligence (AI), AR, robotics, machine learning and human–computer interaction technology to enhance and revolutionize the world’s workforce. The company early in 2021 completed BEOMNI 1.0, the world’s first fully functional humanoid robotic system with an AI evolving brain, enabling remote work at a high level of fidelity to be done from around the globe. Kloor describes how he transformed his childhood dream into his brainchild and tangible reality.FindingsKloor was born a groundbreaker who did not take no for an answer. He was born partially crippled with his legs facing backwards. The doctors said that he would spend his life in braces and would never be able to run. His parents told him not to let those ideas limit him and by the age of seven he ran for the first time and went on to become a martial arts master. Kloor’s childhood dream was to create ways to leave his body and inhabit a robotic body so that he could physically be free from his limited mobility. Kloor built his first computer at the age of seven and invented his first product at the age of eight. Kloor's inspiration to study science came largely from science fiction and his 20,000-plus collection of comic books. Knowing the nature of exponential growth, he spent the next 40 years building the expertise, relationships, networks and experience in all areas of exponential technology. Kloor obtained a BA from Southern Oregon State College, an MEd from Southern Oregon University and two simultaneous PhDs, one in chemistry and one in physics, from Purdue University. Kloor co-founded the company Universal Consultants, where he served as chief science consultant, providing guidance to clients in the development of new technological products, patents and policy positions. Kloor was the founder of Stem CC Inc. – a stem cell company that was sold in 2018 to Celularity, one of the world’s most cutting edge clinical-stage cell therapeutics company. Kloor is also the founder and president of Jupiter 9 Productions and is a credited film writer, director and producer. Since his graduation from Purdue University, he has written for Star Trek: Voyager and was the story editor for Gene Roddenberry’s Earth: Final Conflict, a series he co-created/developed. Kloor helped create Taiwan’s animation i
以下文章是Joanne Pransky在《工业机器人杂志》上进行的一篇问答采访,作为一种方法,传授一位杰出的机器人行业博士出身的成功创新者和企业家的技术,商业和个人经验,如何将他一生的梦想变成发明和商业化产品。本文旨在探讨这些问题。harry Kloor是一位成功的连续企业家、科学家、技术专家、教育家、政策顾问、作家和好莱坞电影制作人。他是Beyond Imagination公司的首席执行官兼联合创始人,该公司开发了一套指数级技术解决方案,部署了人工智能(AI)、增强现实(AR)、机器人、机器学习和人机交互技术,以增强和革新全球劳动力。该公司于2021年初完成了BEOMNI 1.0,这是世界上第一个具有人工智能进化大脑的全功能人形机器人系统,可以在全球范围内完成高保真度的远程工作。Kloor描述了他如何将童年的梦想变成了他的智慧结晶和有形的现实。他生来就是一个不接受拒绝的开拓者。他出生时双腿朝后,部分残废。医生说他将一辈子都戴着牙套,永远也不能跑步了。他的父母告诉他不要让这些想法限制了他,七岁时,他第一次跑步,后来成为了一名武术大师。Kloor童年的梦想是创造出一种方法,让他离开自己的身体,居住在一个机器人的身体里,这样他就可以从有限的行动中解放出来。Kloor在7岁时制造了他的第一台电脑,并在8岁时发明了他的第一件产品。Kloor学习科学的灵感主要来自科幻小说和他收藏的2万多本漫画书。了解指数增长的本质,他在接下来的40年里在指数技术的所有领域建立了专业知识、关系、网络和经验。Kloor在南俄勒冈州立学院获得学士学位,在南俄勒冈大学获得医学博士学位,同时在普渡大学获得化学和物理博士学位。Kloor是Universal Consultants公司的联合创始人,在那里他担任首席科学顾问,为客户提供新技术产品、专利和政策立场的开发指导。Kloor是干细胞公司Stem CC Inc.的创始人,该公司于2018年出售给cellular,后者是世界上最先进的临床阶段细胞治疗公司之一。Kloor也是Jupiter Productions的创始人和总裁,也是著名的电影作家、导演和制片人。从普渡大学毕业后,他一直在为《星际迷航:旅行者》撰稿,并担任吉恩·罗登贝瑞(Gene Roddenberry)的《地球:最终冲突》(Earth: Final Conflict)的故事编辑,这是他参与创作/开发的系列作品。Kloor帮助创建了台湾的动画产业,将第一部由好莱坞主要明星主演的大型动画电影《量子探索:卡西尼太空漫游》带到台湾。Kloor也是大脑测绘和治疗学会的董事会成员,并担任其首席科学顾问和教育推广协调员。原创性/价值是一个“创造性的顾问和普遍的问题解决者,重点是在技术和教育。”自1988年国际空间大学第一堂课以来,Kloor一直与Peter Diamandis博士合作。Kloor是XPRIZE的五个创始团队成员之一,担任其CSO直到2005年,他是Rocket Racing League的创始人之一。他是奇点大学的创始团队成员,并在奇点大学的第一个暑期项目中授课。2016年,他创建了1000万美元的阿凡达XPRIZE, 2018年,他共同创建了碳提取XPRIZE,该奖项获得了历史上最大的奖励,由埃隆·马斯克和马斯克基金会资助,奖金为1亿美元。Kloor是世界历史上唯一一个同时在两个不同学科获得两个博士学位的人。为了表彰这一成就,1994年8月,他被美国广播公司世界新闻评为“每周人物”。Kloor获得了许多奖项,包括脑测绘与治疗学会的金轴突奖。他最近在Beomni的“人工智能大脑”中创建了Kloor周期,这是一个四阶段的体验式自主学习过程,改编自Kolb的学习周期。
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引用次数: 0
An efficient approach for the elevator button manipulation using the visual-based self-driving mobile manipulator 一种基于视觉的自动驾驶移动机械手的电梯按钮操作方法
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-06-27 DOI: 10.1108/ir-03-2022-0063
Toan Van Nguyen, Jin-Hyeon Jeong, Jae-Yun Jo
PurposeBecause mobile manipulators are unable to climb stairs, the elevator operation is a crucial capacity to help those kinds of robot systems work in modern multifloor buildings. Here, the elevator button manipulation is considered as an efficient approach to fulfill that requirement. Previously, some studies presented elevator button recognition algorithms while some others designed schemes for the button manipulation work. However, the mobile robot, the manipulator and the camera in their robot systems are asynchronous. Besides, the time-consuming calibration for the camera is inevitable, especially in changeable environments. This paper aims to present an alternative method for the elevator button manipulation to overcome mentioned shortcomings.Design/methodology/approachIn this paper, the elevator button manipulation is conducted by using the visual-based self-driving mobile manipulator in which the autonomous mobile robot, the manipulator and the camera cooperate more efficiently. Namely, the mobile robot does not need to be located exactly in front of the elevator panel as the manipulator has the ability to adjust the initial frame of the camera based on the system kinematic synchronization. In addition, the proposed method does not require the real world coordinates of elevator buttons, but uniquely using their pixel positions. By doing this, not only is the projection from two-dimensional pixel coordinates to three-dimensional (3D) real world coordinates unnecessary, but also the calibration of the camera is not required.FindingsThe proposed method is experimentally verified by using a visual-based self-driving mobile manipulator. This robotic system is the integration of an autonomous mobile robot, a manipulator and a camera mounted on the end-effector of the manipulator.Research limitations/implicationsBecause the surface of the elevator button panel is usually mirror-like, the elevator button detection is easily affected by the glare and the brightness of the environmental light condition.Practical implicationsThis robot system can be used for the goods delivery or the patrol in modern multifloor buildings.Originality/valueThis paper includes three new features: simultaneously detecting and manipulating elevator buttons without the projection from pixel coordinates to 3D real world coordinates, a kinematic synchronization to help the robot system eliminate accumulated errors and a safe human-like elevator button manipulation.
目的在现代多层建筑中,由于移动机械手无法爬楼梯,因此电梯操作是帮助这类机器人系统工作的关键能力。这里,电梯按钮操作被认为是满足该需求的有效方法。在此之前,一些研究提出了电梯按钮识别算法,而另一些研究则设计了按钮操作工作的方案。然而,在他们的机器人系统中,移动机器人、机械手和相机是异步的。此外,摄像机的标定是不可避免的,尤其是在多变的环境中。本文旨在提出一种电梯按钮操作的替代方法,以克服上述缺点。设计/方法/方法本文采用基于视觉的自动驾驶移动机械手进行电梯按钮操作,使自动驾驶移动机器人、机械手和摄像机更有效地协同工作。也就是说,移动机器人不需要精确地位于电梯面板的前方,因为机械手具有根据系统运动同步调整摄像机初始帧的能力。此外,该方法不需要电梯按钮的真实世界坐标,而是唯一地使用它们的像素位置。通过这样做,不仅不需要从二维像素坐标到三维(3D)真实世界坐标的投影,而且不需要对相机进行校准。利用基于视觉的自动驾驶移动机械臂对该方法进行了实验验证。该机器人系统由自主移动机器人、机械手和安装在机械手末端执行器上的摄像机组成。由于电梯按钮面板表面通常呈镜面状,因此电梯按钮检测容易受到眩光和环境光条件亮度的影响。实用意义该机器人系统可用于现代多层建筑的货物配送或巡逻。原创性/价值本文包括三个新特征:同时检测和操纵电梯按钮,而不需要从像素坐标到三维现实坐标的投影;运动同步,帮助机器人系统消除累积误差;安全的类人电梯按钮操作。
{"title":"An efficient approach for the elevator button manipulation using the visual-based self-driving mobile manipulator","authors":"Toan Van Nguyen, Jin-Hyeon Jeong, Jae-Yun Jo","doi":"10.1108/ir-03-2022-0063","DOIUrl":"https://doi.org/10.1108/ir-03-2022-0063","url":null,"abstract":"\u0000Purpose\u0000Because mobile manipulators are unable to climb stairs, the elevator operation is a crucial capacity to help those kinds of robot systems work in modern multifloor buildings. Here, the elevator button manipulation is considered as an efficient approach to fulfill that requirement. Previously, some studies presented elevator button recognition algorithms while some others designed schemes for the button manipulation work. However, the mobile robot, the manipulator and the camera in their robot systems are asynchronous. Besides, the time-consuming calibration for the camera is inevitable, especially in changeable environments. This paper aims to present an alternative method for the elevator button manipulation to overcome mentioned shortcomings.\u0000\u0000\u0000Design/methodology/approach\u0000In this paper, the elevator button manipulation is conducted by using the visual-based self-driving mobile manipulator in which the autonomous mobile robot, the manipulator and the camera cooperate more efficiently. Namely, the mobile robot does not need to be located exactly in front of the elevator panel as the manipulator has the ability to adjust the initial frame of the camera based on the system kinematic synchronization. In addition, the proposed method does not require the real world coordinates of elevator buttons, but uniquely using their pixel positions. By doing this, not only is the projection from two-dimensional pixel coordinates to three-dimensional (3D) real world coordinates unnecessary, but also the calibration of the camera is not required.\u0000\u0000\u0000Findings\u0000The proposed method is experimentally verified by using a visual-based self-driving mobile manipulator. This robotic system is the integration of an autonomous mobile robot, a manipulator and a camera mounted on the end-effector of the manipulator.\u0000\u0000\u0000Research limitations/implications\u0000Because the surface of the elevator button panel is usually mirror-like, the elevator button detection is easily affected by the glare and the brightness of the environmental light condition.\u0000\u0000\u0000Practical implications\u0000This robot system can be used for the goods delivery or the patrol in modern multifloor buildings.\u0000\u0000\u0000Originality/value\u0000This paper includes three new features: simultaneously detecting and manipulating elevator buttons without the projection from pixel coordinates to 3D real world coordinates, a kinematic synchronization to help the robot system eliminate accumulated errors and a safe human-like elevator button manipulation.\u0000","PeriodicalId":54987,"journal":{"name":"Industrial Robot-The International Journal of Robotics Research and Application","volume":"98 1","pages":"84-93"},"PeriodicalIF":1.8,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74993161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Multi-objective optimal trajectory planning of customized industrial robot based on reliable dynamic identification for improving control accuracy 基于可靠动态辨识的定制化工业机器人多目标轨迹优化规划,提高控制精度
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-06-20 DOI: 10.1108/ir-12-2021-0301
Renluan Hou, Jianwei Niu, Yuliang Guo, Tao Ren, Bing Han, Xiaolong Yu, Qun Ma, J. Wang, Renjie Qi
PurposeThe purpose of this paper is to enhance control accuracy, energy efficiency and productivity of customized industrial robots by the proposed multi-objective trajectory optimization approach. To obtain accurate dynamic matching torques of the robot joints with optimal motion, an improved dynamic model built by a novel parameter identification method has been proposed.Design/methodology/approachThis paper proposes a novel multi-objective optimal approach to minimize the time and energy consumption of robot trajectory. First, the authors develop a reliable dynamic parameters identification method to obtain joint torques for formulating the normalized energy optimization function and dynamic constraints. Then, optimal trajectory variables are solved by converting the objective function into relaxation constraints based on second-order cone programming and Runge–Kutta discrete method to reduce the solving complexity.FindingsExtensive experiments via simulation and in real customized robots are conducted. The results of this paper illustrate that the accuracy of joint torque predicted by the proposed model increases by 28.79% to 79.05% over the simplified models used in existing optimization studies. Meanwhile, under the same solving efficiency, the proposed optimization trajectory consumes a shorter time and less energy compared with the existing optimization ones and the polynomial trajectory.Originality/valueA novel time-energy consumption optimal trajectory planning method based on dynamic identification is proposed. Most existing optimization methods neglect the effect of dynamic model reliability on energy efficiency optimization. A novel parameter identification approach and a complete dynamic torque model are proposed. Experimental results of dynamic matching torques verify that the control accuracy of optimal robot motion can be significantly improved by the proposed model.
目的通过提出的多目标轨迹优化方法,提高定制工业机器人的控制精度、能效和生产率。为了获得最优运动状态下机器人关节的精确动态匹配力矩,提出了一种基于参数辨识方法的改进动力学模型。本文提出了一种新的多目标优化方法,以使机器人轨迹的时间和能量消耗最小。首先,提出了一种可靠的动态参数辨识方法,以获得关节力矩,并用于制定归一化能量优化函数和动态约束。然后,基于二阶锥规划和龙格-库塔离散方法,将目标函数转化为松弛约束,求解最优轨迹变量,降低求解复杂度;通过仿真和实际定制机器人进行了大量的实验。结果表明,与现有优化研究中使用的简化模型相比,该模型预测的关节转矩精度提高了28.79% ~ 79.05%。同时,在相同的求解效率下,与现有的优化轨迹和多项式轨迹相比,所提出的优化轨迹消耗的时间更短,能量更少。提出了一种基于动态识别的时间-能量最优轨迹规划方法。现有的优化方法大多忽略了动态模型可靠性对能效优化的影响。提出了一种新的参数辨识方法和完整的动态转矩模型。动态匹配力矩实验结果验证了该模型能显著提高机器人最优运动的控制精度。
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引用次数: 1
Design and performance analysis of an adaptive omnidirectional wheel for heavy payload robot 大载荷机器人自适应全向轮的设计与性能分析
IF 1.8 4区 计算机科学 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-06-20 DOI: 10.1108/ir-01-2022-0024
Changlong Ye, Yunfei Du, Suyang Yu, Qiang Zhao, Chun-ying Jiang
PurposeWith the development of automation technology, the accuracy, bearing capacity and self-adaptation requirements of wheeled mobile robots are more and more demanding under various complex conditions, which will urge designers such shortcomings as the low accuracy, poor flexibility and weak obstacle crossing ability of traditional heavy haul vehicles and improve the wear resistance and bearing capacity of traditional omnidirectional wheels.Design/methodology/approachThe optimal configuration for heavy payload transportation is obtained by building sliding friction consumption model of traditional wheels with different driving types based on Hertz tangential contact theory. The heavy payload omnidirectional wheel with a double-wheel steering and a coupled differential wheel driving is designed with the optimal configuration. The wheel consists of a differential gear train unit and a nonindependent suspension unit. Kinematics model of the wheel is established and relative parameters are optimized.FindingsThe prototype experiments show that the wheel has higher motion accuracy and environment adaptability. The results are consistent with the theoretical calculation, which show that the accuracy is more than 50% higher than that of differential prototype. The motion stability and the accuracy of the coupled differential omnidirectional wheel are better than those of the traditional omnidirectional wheels during the moving and obstacle crossing process under complex conditions, which verifies the correctness and advantages of the design.Originality/valueAiming at the specific application of heavy payload omnidirectional transportation, a new omnidirectional mobile mechanism with a two-wheel coupling drive structure and an adaptive mechanism is proposed. The simulation and experimental results show that it can realize the high-precision heavy-load omnidirectional movement, the effective contact with the ground and improve the adaptability to the rugged ground. It is flexible, simple and modular and can be widely applied to transportation, exploration, detection and other related industrial fields.
随着自动化技术的发展,对轮式移动机器人在各种复杂条件下的精度、承载能力和自适应要求越来越高,这将促使设计者克服传统重载车辆精度低、灵活性差、过障能力弱等缺点,提高传统全向车轮的耐磨性和承载能力。设计/方法/途径基于赫兹切向接触理论,建立不同驱动类型的传统车轮滑动摩擦消耗模型,得到重载运输的最优配置。设计了双轮转向-差速轮耦合驱动的大载荷全向轮。车轮由差动轮系单元和非独立悬挂单元组成。建立了车轮的运动学模型,并对相关参数进行了优化。结果样机实验表明,该车轮具有较高的运动精度和环境适应性。结果与理论计算相吻合,精度比差分样机提高50%以上。在复杂条件下的移动和越障过程中,耦合差动全向轮的运动稳定性和精度优于传统全向轮,验证了该设计的正确性和优越性。针对大载荷全向运输的具体应用,提出了一种具有两轮耦合驱动结构和自适应机构的全向移动机构。仿真和实验结果表明,该系统能实现高精度重载全向移动,与地面有效接触,提高对崎岖地面的适应性。它具有灵活、简单、模块化等特点,可广泛应用于交通运输、勘探、检测等相关工业领域。
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引用次数: 2
期刊
Industrial Robot-The International Journal of Robotics Research and Application
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