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期刊论文 44

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9 + 2结构 1

A*算法 1

三酰甘油 1

不确定性 1

人居辅助环境 1

人工纤毛 1

人机协作 1

仿生系统 1

低雷诺数 1

光流法 1

前馈补偿器 1

加速度重构;固定时间收敛;约束控制;障碍李雅普诺夫函数;初始状态无关方法;外骨骼机器人 1

动态二叉树 1

卵母细胞去核 1

参数规划 1

反馈控制器 1

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场操控;变换光学;天线设计;表面电磁学 1

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Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration

《机械工程前沿(英文)》 2022年 第17卷 第1期   页码 8-8 doi: 10.1007/s11465-021-0664-0

摘要: With the widespread application of legged robot in various fields, the demand for a robot with high locomotion and manipulation ability is increasing. Adding an extra arm is a useful but general method for a legged robot to obtain manipulation ability. Hence, this paper proposes a novel hexapod robot with two integrated leg–arm limbs that obtain dexterous manipulation functions besides locomotion ability without adding an extra arm. The manipulation modes can be divided into coordinated manipulation condition and single-limb manipulation condition. The former condition mainly includes fixed coordinated clamping case and fixed coordinated shearing case. For the fixed coordinated clamping case, the degrees of freedom (DOFs) analysis of equivalent parallel mechanism by using screw theory and the constraint equation of two integrated limbs are established. For the fixed coordinated shearing case, the coordinated working space is determined, and an ideal coordinated manipulation ball is presented to guide the coordinated shearing task. In addition, the constraint analysis of two adjacent integrated limbs is performed. Then, mobile manipulation with one integrated leg–arm limb while using pentapod gait is discussed as the single-limb manipulation condition, including gait switching analysis between hexapod gait and pentapod gait, different pentapod gaits analysis, and a complex six-DOF manipulation while walking. Corresponding experiments are implemented, including clamping tasks with two integrated limbs, coordinated shearing task by using two integrated limbs, and mobile manipulation with pentapod gait. This robot provides a new approach to building a multifunctional locomotion platform.

关键词: leg–arm integration     hexapod robot     fixed coordinated manipulation     mobile manipulation    

Nonlinear dynamic analysis for elastic robotic arms

M. H. KORAYEM, H. N. RAHIMI

《机械工程前沿(英文)》 2011年 第6卷 第2期   页码 219-228 doi: 10.1007/s11465-011-0218-y

摘要:

The aim of the paper is to analyze the nonlinear dynamics of robotic arms with elastic links and joints. The main contribution of the paper is the comparative assessment of assumed modes and finite element methods as more convenient approaches for computing the nonlinear dynamic of robotic systems. Numerical simulations comprising both methods are carried out and results are discussed. Hence, advantages and disadvantages of each method are illustrated. Then, adding the joint flexibility to the system is dealt with and the obtained model is demonstrated. Finally, a brief description of the optimal motion generation is presented and the simulation is carried out to investigate the role of robot dynamic modeling in the control of robots.

关键词: robotic arms     elastic link     elastic joint     nonlinear dynamics     optimal control    

Kinematic design of an anthropomimetic 7-DOF cable-driven robotic arm

Guilin YANG, Shabbir Kurbanhusen MUSTAFA, Song Huat YEO, Wei LIN, Wen Bin LIM

《机械工程前沿(英文)》 2011年 第6卷 第1期   页码 45-60 doi: 10.1007/s11465-011-0205-3

摘要:

In this paper, an anthropomimetic design of a 7-DOF dexterous robotic arm is proposed. Similar to the human arm, the arm consists of three sequentially connected modules, i.e., a 3-DOF shoulder module, a 1-DOF elbow module, and a 3-DOF wrist module. All three arm modules are also driven by cables in order to mimic the driving scheme and functionality of the human muscles. This paper addresses three critical design analysis issues, i.e., the displacement analysis, the tension-closure analysis, and the workspace analysis. A closed-form solution approach is presented for the forward displacement analysis, while the inverse displacement solution is obtained through an efficient optimization algorithm, in which both task-decomposition and dimension-reduction techniques are employed. An effective tension-closure analysis algorithm is also formulated based on the theory of convex analysis. The orientation workspace for the 3-DOF shoulder and wrist modules are then analyzed using a new equi-volumetric partition scheme based on the intuitive Tilt-and-Torsion angle parameterization. An optimization approach is then investigated for the kinematic design of the three joint modules, in which the design objective is to maximize the matched workspace of the robotic arm joints with that of the human arm joints. A research prototype of the 7-DOF cable-driven robotic arm has also been developed in order to demonstrate the anthropomimetic design concept. With a lightweight structure of 1 kg, the cable-driven robotic arm can carry a payload of 5 kg and has motion repeatability of±2.5mm.

关键词: anthropomimetic design     robotic arm     cable-driven mechanism     kinematic analysis     design optimization    

Stiffness analysis and experimental validation of robotic systems

Giuseppe CARBONE

《机械工程前沿(英文)》 2011年 第6卷 第2期   页码 182-196 doi: 10.1007/s11465-011-0221-3

摘要:

Stiffness can be considered of primary importance in order to guarantee the successful use of any robotic system for a given task. Therefore, this paper proposes procedures for carrying out both numerical and experimental estimations of stiffness performance for multibody robotic systems. The proposed numerical procedure is based on models with lumped parameters for deriving the Cartesian stiffness matrix. Stiffness performance indices are also proposed for comparing stiffness performance. Then, an experimental procedure for the evaluation stiffness performance is proposed as based on a new measuring system named as Milli-CATRASYS (Milli Cassino Tracking System) and on a trilateration technique. Cases of study are reported to show the soundness and engineering feasibility of both the proposed numerical formulation for stiffness analysis and experimental validation of stiffness performance.

关键词: robotics     stiffness performance     numerical and experimental estimations    

基于3D变换电磁学和2D表面电磁学的电磁场操控和天线设计 Review

Peng-fei ZHANG, Yu-kai YAN, Ying LIU, Raj MITTRA

《信息与电子工程前沿(英文)》 2020年 第21卷 第3期   页码 351-365 doi: 10.1631/FITEE.1900489

摘要: 尽管人们已经开发了针对不同类型天线的多种设计技术,如线天线、贴片天线、透镜天线以及反射面等,但尚未构建普适的框架技术——普适框架技术应可用于各种天线的综合与设计,使天线具有满足使用者特定需求的电气特性。近年来,5G通信及各种空天技术、国防应用、生物医疗和类似应用的快速发展,迫切需要天线设计技术的大幅提升。本文从场操控角度剖视天线设计技术,为这种框架性构建提供一个可能的思考,以期最终部分满足这种需求。首先,回顾现有操控技术,包括基于麦克斯韦方程和波动方程在内的场变换方法,指出这些技术的局限性,并提出改善性能的方法。其次,介绍一种基于2D超表面的场操控方法及其理论基础——广义反射和折射定律。进一步,探索如何利用2D超表面克服传统的由临界角严格限制的反射和折射局限性。最后,给出场操控方法在天线设计中的应用实例,以期引导人们发展面向未来通信天线设计的通用策略和方法。

关键词: 场操控;变换光学;天线设计;表面电磁学    

A novel task-oriented framework for dual-arm robotic assembly task

《机械工程前沿(英文)》 2021年 第16卷 第3期   页码 528-545 doi: 10.1007/s11465-021-0638-2

摘要: In industrial manufacturing, the deployment of dual-arm robots in assembly tasks has become a trend. However, making the dual-arm robots more intelligent in such applications is still an open, challenging issue. This paper proposes a novel framework that combines task-oriented motion planning with visual perception to facilitate robot deployment from perception to execution and finish assembly problems by using dual-arm robots. In this framework, visual perception is first employed to track the effects of the robot behaviors and observe states of the workpieces, where the performance of tasks can be abstracted as a high-level state for intelligent reasoning. The assembly task and manipulation sequences can be obtained by analyzing and reasoning the state transition trajectory of the environment as well as the workpieces. Next, the corresponding assembly manipulation can be generated and parameterized according to the differences between adjacent states by combining with the prebuilt knowledge of the scenarios. Experiments are set up with a dual-arm robotic system (ABB YuMi and an RGB-D camera) to validate the proposed framework. Experimental results demonstrate the effectiveness of the proposed framework and the promising value of its practical application.

关键词: dual-arm assembly     AI reasoning     intelligent system     task-oriented motion planning     visual perception    

Review of surgical robotic systems for keyhole and endoscopic procedures: state of the art and perspectives

Yuyang Chen, Shu’an Zhang, Zhonghao Wu, Bo Yang, Qingquan Luo, Kai Xu

《医学前沿(英文)》 2020年 第14卷 第4期   页码 382-403 doi: 10.1007/s11684-020-0781-x

摘要: Minimally invasive surgery, including laparoscopic and thoracoscopic procedures, benefits patients in terms of improved postoperative outcomes and short recovery time. The challenges in hand–eye coordination and manipulation dexterity during the aforementioned procedures have inspired an enormous wave of developments on surgical robotic systems to assist keyhole and endoscopic procedures in the past decades. This paper presents a systematic review of the state-of-the-art systems, picturing a detailed landscape of the system configurations, actuation schemes, and control approaches of the existing surgical robotic systems for keyhole and endoscopic procedures. The development challenges and future perspectives are discussed in depth to point out the need for new enabling technologies and inspire future researches.

关键词: surgical robots     keyhole surgery     endoscopic surgery    

Gained switching-based fuzzy sliding mode control for a discrete-time underactuated robotic system with

Hui LI, Ruiqin LI, Jianwei ZHANG

《机械工程前沿(英文)》 2021年 第16卷 第2期   页码 353-362 doi: 10.1007/s11465-020-0620-4

摘要: This study proposes a gained switching-based discrete-time sliding mode control method to address the chattering issue in disturbed discrete-time systems, which suffer from various unknown uncertainties. Through the new structure of the designed reaching law, the proposed method can effectively increase the convergence speed while guaranteeing chattering-free control. The performance of controlling underactuated robotic systems can be further improved by the adoption of fuzzy logic to perform adaptive online hyper-parameter tuning. In addition, an underactuated robotic system with uncertainties is studied to validate the effectiveness of the proposed reaching law. Results reveal the dynamic performance and robustness of the proposed reaching law in the studied system and prove the proposed method’s superiority over other state-of-the-art methods.

关键词: sliding-mode control     robot control     discrete-time uncertain systems     fuzzy logic    

微纳操作与表征

Yu Sun, Sergej Fatikow, Xinyu Liu

《工程(英文)》 2023年 第24卷 第5期   页码 1-2 doi: 10.1016/j.eng.2023.04.006

New spinal robotic technologies

Bowen Jiang, Tej D. Azad, Ethan Cottrill, Corinna C. Zygourakis, Alex M. Zhu, Neil Crawford, Nicholas Theodore

《医学前沿(英文)》 2019年 第13卷 第6期   页码 723-729 doi: 10.1007/s11684-019-0716-6

摘要: Robotic systems in surgery have developed rapidly. Installations of the da Vinci Surgical System (Intuitive Surgical, Sunnyvale, CA, USA), widely used in urological and gynecological procedures, have nearly doubled in the United States from 2010 to 2017. Robotics systems in spine surgery have been adopted more slowly; however, users are enthusiastic about their applications in this subspecialty. Spinal surgery often requires fine manipulation of vital structures that must be accessed via limited surgical corridors and can require repetitive tasks over lengthy periods of time — issues for which robotic assistance is well-positioned to complement human ability. To date, the United States Food and Drug Administration (FDA) has approved 7 robotic systems across 4 companies for use in spinal surgery. The available clinical data evaluating their efficacy have generally demonstrated these systems to be accurate and safe. A critical next step in the broader adoption of surgical robotics in spine surgery is the design and implementation of rigorous comparative studies to interrogate the utility of robotic assistance. Here we discuss current applications of robotics in spine surgery, review robotic systems FDA-approved for use in spine surgery, summarize randomized controlled trials involving robotics in spine surgery, and comment on prospects of robotic-assisted spine surgery.

关键词: robotics     spine surgery     Mazor     ExcelsiusGPS     ROSA     pedicle screw    

Robotic distal pancreatectomy versus conventional laparoscopic distal pancreatectomy: a comparative study

null

《医学前沿(英文)》 2015年 第9卷 第3期   页码 356-360 doi: 10.1007/s11684-015-0404-0

摘要:

Robotic system has been increasingly used in pancreatectomy. However, the effectiveness of this method remains uncertain. This study compared the surgical outcomes between robot-assisted laparoscopic distal pancreatectomy and conventional laparoscopic distal pancreatectomy. During a 15-year period, 35 patients underwent minimally invasive approach of distal pancreatectomy in our center. Seventeen of these patients had robot-assisted laparoscopic approach, and the remaining 18 had conventional laparoscopic approach. Their operative parameters and perioperative outcomes were analyzed retrospectively in a prospective database. The mean operating time in the robotic group (221.4 min) was significantly longer than that in the laparoscopic group (173.6 min) (P = 0.026). Both robotic and conventional laparoscopic groups presented no significant difference in spleen-preservation rate (52.9% vs. 38.9%) (P = 0.505), operative blood loss (100.3 ml vs. 268.3 ml) (P = 0.29), overall morbidity rate (47.1% vs. 38.9%) (P = 0.73), and post-operative hospital stay (11.4 days vs. 14.2 days) (P = 0.46). Both groups also showed no perioperative mortality. Similar outcomes were observed in robotic distal pancreatectomy and conventional laparoscopic approach. However, robotic approach tended to have the advantages of less blood loss and shorter hospital stay. Further studies are necessary to determine the clinical position of robotic distal pancreatectomy.

关键词: distal pancreatectomy     pancreatic neoplasm     robotic surgery    

基于阻抗控制的人机协作范式研究及其机器人装配应用 Article

赵兴炜, 陈沂洺, 钱璐, 陶波, 丁汉

《工程(英文)》 2023年 第30卷 第11期   页码 83-92 doi: 10.1016/j.eng.2022.08.022

摘要:

人-机器人协作由于人和机器人的优势互补而成为一个新兴的研究领域。本文提出了一种基于阻抗控制人机协作理论框架。在人机理论协框架下,人是决策者,机器人是执行者,装配任务提供环境约束。机器人是执行装配动作的主要执行者,具有位置控制、拖动控制、正阻抗控制和负阻抗控制等方式。为了揭示人机协作框架的特点,本文讨论了不同控制模式的切换条件图和人机协同耦合系统的稳定性分析。最后进行了人机协作装配实验,在装配公差为0.08 mm或配合过盈配合时,均可完成装配任务。实验表明,人机协同装配具有人与机器人的互补优势,能够有效地完成复杂的装配任务。

关键词: 人机协作     阻抗控制     机器人装配    

声场驱动的微操作技术及其生物医学应用

Zhichao Ma, Peer Fischer

《工程(英文)》 2023年 第24卷 第5期   页码 13-16 doi: 10.1016/j.eng.2022.06.006

面向CPG驱动的仿生机器鱼容错控制方法 Article

杨越麒, 王健, 吴正兴, 喻俊志

《工程(英文)》 2018年 第4卷 第6期   页码 861-868 doi: 10.1016/j.eng.2018.09.011

摘要:

容错性能对于自推进仿生机器鱼在实际水下应用中的可操作性和生存能力至关重要。本文探讨了具有多个可活动关节和一个被卡住尾部关节的自由游动机器鱼的容错控制问题。提出的控制系统主要由两个部分组成:反馈控制器和前馈补偿器。具体而言,一方面,设计了基于生物启发中心模式发生器的反馈控制器用于使机器鱼对外部干扰具有鲁棒性;另一方面,引入了基于动力学模型的前馈补偿器来加速整个控制系统的收敛。在此基础上,开展了仿真实验来完成控制系统分析和故障机器鱼游动性能验证。最后,水下实验表明,所提出的容错控制方法能够有效调整故障机器鱼,使其能够在故障情况下完成所需运动,进而提高实际机器鱼系统的稳定性和寿命。

关键词: 容错控制     机器鱼     运动控制     反馈控制器     前馈补偿器    

面向机器人微创手术的新型遥控柔性机器人 Article

李峥, Jan Feiling, 任洪亮, Haoyong Yu

《工程(英文)》 2015年 第1卷 第1期   页码 73-78 doi: 10.15302/J-ENG-2015011

摘要:

本文介绍了基于约束型蛇形拉线机构(CTSM)的新型柔性机器人系统。与达芬奇外科手术机器人和传统柔性机器人相比,基于CTSM的机器人具有更大的工作空间,更高的灵巧度以及刚度可控的优点。该机器人采用Novint Falcon触觉设备进行远程操控, 包括两种操作模式——直接映射模式和增量模式。在每一种模式下,该机器人都可以采用“最大刚度”方案或“最小运动”方案来操控。CTSM的以上优点在仿真模拟和实验中均得以验证。

关键词: 外科手术机器人     柔性机械臂     拉线机构     机器人微创手术    

标题 作者 时间 类型 操作

Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration

期刊论文

Nonlinear dynamic analysis for elastic robotic arms

M. H. KORAYEM, H. N. RAHIMI

期刊论文

Kinematic design of an anthropomimetic 7-DOF cable-driven robotic arm

Guilin YANG, Shabbir Kurbanhusen MUSTAFA, Song Huat YEO, Wei LIN, Wen Bin LIM

期刊论文

Stiffness analysis and experimental validation of robotic systems

Giuseppe CARBONE

期刊论文

基于3D变换电磁学和2D表面电磁学的电磁场操控和天线设计

Peng-fei ZHANG, Yu-kai YAN, Ying LIU, Raj MITTRA

期刊论文

A novel task-oriented framework for dual-arm robotic assembly task

期刊论文

Review of surgical robotic systems for keyhole and endoscopic procedures: state of the art and perspectives

Yuyang Chen, Shu’an Zhang, Zhonghao Wu, Bo Yang, Qingquan Luo, Kai Xu

期刊论文

Gained switching-based fuzzy sliding mode control for a discrete-time underactuated robotic system with

Hui LI, Ruiqin LI, Jianwei ZHANG

期刊论文

微纳操作与表征

Yu Sun, Sergej Fatikow, Xinyu Liu

期刊论文

New spinal robotic technologies

Bowen Jiang, Tej D. Azad, Ethan Cottrill, Corinna C. Zygourakis, Alex M. Zhu, Neil Crawford, Nicholas Theodore

期刊论文

Robotic distal pancreatectomy versus conventional laparoscopic distal pancreatectomy: a comparative study

null

期刊论文

基于阻抗控制的人机协作范式研究及其机器人装配应用

赵兴炜, 陈沂洺, 钱璐, 陶波, 丁汉

期刊论文

声场驱动的微操作技术及其生物医学应用

Zhichao Ma, Peer Fischer

期刊论文

面向CPG驱动的仿生机器鱼容错控制方法

杨越麒, 王健, 吴正兴, 喻俊志

期刊论文

面向机器人微创手术的新型遥控柔性机器人

李峥, Jan Feiling, 任洪亮, Haoyong Yu

期刊论文