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6th IEEE RAS/EMBS International Conference on Biomedical robotics and Biomechatronics, BioRob 2016

作者： Xu, Tiantian Vong, Chi-Ian Wang, Ben Liu, Lianqing Wu, Xinyu Zhang, Li Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences China Shatin NT Hong Kong SAR Hong Kong State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang China Shenzhen Research Institute Chinese University of Hong Kong Shenzhen China Chow Yuk Ho Technology Centre for Innovative Medicine Chinese University of Hong Kong Hong Kong SAR Hong Kong

ISBN: (纸本)9781509032877

Microswimmers capable of propulsion at low Reynolds numbers have great potential for numerous applications. Several kinds of artificial microswimmers, actuated by magnetic fields, with rigid helical tails have been developed. In previous works, we demonstrated that a magnetic swimmer with a soft tail could form a helical shape during rotation to propel itself at low Reynolds numbers. The advantage of compliant structures is that the high softness makes swimmers more adaptive in confined or complex environments. The interfacial friction drags are reduced by using superhydrophobic surfaces. Therefore, this paper aims to study the influence of surface and interface properties, particularly the hydrophilicity and hydrophobicity of the soft tail surface, on the swimming performance. For this, we compared the swimming performance of two millimeter-scaled swimmers with a superhydrophilic soft tail and a superhydrophobic soft tail, respectively, in viscous liquids. The two swimmers exhibit different dynamic morphologies and swimming performance with the same input parameters. The swimmer with a superhydrophobic soft tail shows higher swimming velocity than that with a superhydrophilic soft tail, except in pure glycerol. The present work provides useful informations for selecting surface coating of swimmers with soft tails at low Reynolds numbers. © 2016 IEEE.

关键词： Propulsion

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A Novel Extended Potential Field Controller for Use on Aerial Robots

A Novel Extended Potential Field Controller for Use on Aeria...

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IEEE International Conference on automation Science and Engineering

作者： Alexander C. Woods Hung M. La Quang P. Ha Advanced Robotics and Automation Laboratory Department of Computer Science and Engineering University of Nevada Reno 89557 USA School of Electrical Mechanical and Mechatronic Systems University of Technology Sydney Australia

ISBN: (纸本)9781509024100

Unmanned Aerial Vehicles (UAV), commonly known as drones, have many potential uses in real world applications. Drones require advanced planning and navigation algorithms to enable them to safely move through and interact with the world around them. This paper presents an extended potential field controller (ePFC) which enables an aerial robot, or drone, to safely track a dynamic target location while simultaneously avoiding any obstacles in its path. The ePFC outperforms a traditional potential field controller (PFC) with smoother tracking paths and shorter settling times. The proposed ePFC's stability is evaluated by Lyapunov approach, and its performance is simulated in a Matlab environment. Finally, the controller is implemented on an experimental platform in a laboratory environment which demonstrates the effectiveness of the controller.

关键词： Drones Navigation Robot sensing systems Target tracking Stability analysis

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Impedance Control of a Robot Needle with a Fiber Optic Force Sensor

Impedance Control of a Robot Needle with a Fiber Optic Force...

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2016 IEEE 13th International Conference on Signal Processing（ICSP2016）

作者： Lifang Xiao Tangwen Yang Benyan Huo Xingang Zhao Jianda Han Weiliang Xu Institute of Information Science Beijing Jiaotong University Beijing Key Laboratory of Advanced Information Science and Network Technology State Key Laboratory of Robotics Shenyang Institute of Automation Chinese academy of science Department of Mechanical Engineering University of Auckland

In this paper, an impedance control is proposed for a robotic needle with a fiber optic force sensor. The fiber optic force sensor is placed at the tip of the needle to directly measure the interaction force between needle and soft tissue, overcoming the noise like friction force. The sensor is sensitive to the temperature condition, and their relationship is first established, and then used to compensate for the temperature influence to enhance the force measurement. An impedance control is presented based on insertion model whose impedance parameters are identified in terms of acquired test data, and experimental results show that the control strategy is effective to avoid excessive insertion force, reducing the risk of robotic needle.

关键词： robotic needle impedance control fiber optic force sensor temperature compensation

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A Human Motion Prediction Algorithm Based on HSMM for SIAT's Exoskeleton

A Human Motion Prediction Algorithm Based on HSMM for SIAT's...

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第35届中国控制会议

作者： Min Wang Xinyu Wu Du-Xin Liu Can Wang Key Laboratory of Human-Machine-Intelligence Synergic Systems Shenzhen Institutes of Advanced TechnologyChinese Academy of Sciences Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Guangdong Provincial Key Lab of Robotics and Intelligent System Shenzhen Institutes of Advanced TechnologyChinese Academy of Sciences Department of Mechanical and Automation The Chinese University of Hong Kong

ISBN: (纸本)9781509009107

Getting the exoskeleton pilot's motion intent is very important for exoskeleton *** this paper,a new approach to predict human motion is *** prediction method is based on Hidden Semi-Markov *** orientation of the pilot's segment is collected by the Inertial Measurement *** Adaptive Boosting algorithm is adopted to classify the orientation data into *** sequence of motion labels is inputted into Hidden Semi-Markov Models for motion *** experimental data validate the proposed method.

关键词： Adaptive Boosting Hidden Semi-Markov Model Human Motion Prediction Exoskeleton

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Rehabilitation with lower limb exoskeleton robot joint load adaptive server control

Rehabilitation with lower limb exoskeleton robot joint load ...

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International Conference on Information and automation (ICIA)

作者： Shaomin Zhang Can Wang Ying Hu Duxin Liu Ting Zhang Xinyu Wu Key Laboratory of Human-Machine-Intelligence Synergic Systems Chinese Academy ot Sciences Shenzhen College of Advanced Technology University of Chinese Academy of Sciences Guangdong Provincial Key Laboratory of Robotics and Intelligent System Chinese Academy of Sciences Department of Mechanical and Automation The Chinese University of Hong Kong

ISBN: (纸本)9781509041039

In order to help spinal cord injury (SCI) patients to walk again, a medical robot exoskeleton have been developed to assist these patients to walk independently in SIAT, Shenzhen. The research of this article is exoskeleton robot single joint load adaptive servo control. Considering the volunteers, wearing an exoskeleton robot, joints have significant changes in load torque and the moment of inertia, so driving joints was designed based on fuzzy control. Load adaptive servo controller makes the robot in rows, counter rotating torque moment of inertia of change and change has a better adaptability, and improves the smoothness of joint movement. This method was tested and the test on SIAT exoskeletons, verify the feasibility of joint adaptive control algorithm.

关键词： Servomotors Legged locomotion Exoskeletons Torque DC motors

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A MICROFLUIDIC SYSTEM FOR ASSESSING FRYING OIL QUALITY

A MICROFLUIDIC SYSTEM FOR ASSESSING FRYING OIL QUALITY

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IEEE International Conference on Micro Electro Mechanical Systems

作者： Mei Liu Shaorong Xie Ji Ge Zhensong Xu Zhizheng Wu Changhai Ru Yu Sun Shanghai Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronic Engineering and Automation Shanghai University 200072 China Department of Mechanical and Industrial Engineering University of Toronto Toronto ON M5S 3G8 Canada Jiangsu Provincial Key Laboratory of Advanced Robotics and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 China

ISBN: (纸本)9781509006090

This paper reports a microfluidic system for assessing frying oil degradation. The hydrodynamic focusing microfluidic device developed for this purpose generates water-in-oil droplets. By correlating droplet size and the widely accepted oil quality metric, the total polar compound (TPM), it was proven that the device is capable of evaluating frying oil degradation. Compared to existing bulky instruments and methods, this device and measurement technique are fast, simple, and cost-effective.

关键词： SYSTEM ASSESSING FRYING oils Frying oils oil degradation

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A Unified Dynamic Control Method for a Redundant Dual Arm Robot

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Journal of Bionic Engineering 2015年第3期12卷 361-371页

作者： Meiling Wang Minzhou Luo Tao Li Marco Ceccarelli Department of Automation University of Science and Technology of China Hefei 230026 China Institute of Advanced Manufacturing Technology Hefei Institute of Physical Science Chinese Academy of Sciences Changzhou 213164 China LARM Laboratory of Robotics and Meehatronies DiMSAT-University of Cassino Via Di Biasio 43 03043 Cassino (Fr) Italy

Compared to single arm robot system, dual arm robot has the ability of performing human-like dexterity and cooperation. Dual arm cooperative operation has attracted more and more attention in industrial applications, such as in assembly of complex parts, manufacturing tasks and handling objects. A unified dynamic control method, which is divided into three modes, namely, independent mode, dependent mode, and half dependent mode, is proposed for a redundant dual arm robot with focus on the movement and force of the desired task being operated. Attention is devoted to develop a unified formulation of the above three modes. In addition, a closed form of inverse kinematic solution instead of numerical integration approach is proposed with the aim to guarantee position accuracy. Different from traditional dynamic controllers, where the independent redundancy resolution is obtained based on particular velocity or acceleration levels, here the two dynamic controllers are improved by combining a closed form of inverse kinematic solution with velocity and acceleration levels. Furthermore, the theoretical results of the proposed control method are validated by simulations and experiments.

关键词： unified control method dual arm robot dynamic constraints intemal force

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A cross-helical tendons actuated dexterous continuum manipulator

A cross-helical tendons actuated dexterous continuum manipul...

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IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Anzhu Gao Hao Liu Yuanyuan Zhou Zhenda Yang Zhidong Wang Hongyi Li State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang China Zhidong Wang is with Dept. of Advanced Robotics Chiba Institute of Technology Narashino Chiba Japan Chinese Academy of Sciences State Key Laboratory of Robotics Shenyang Institute of Automation Shenyang China

S shape dexterous continuum manipulators (DCMs) are preferred in minimally invasive surgeries for better steerability towards a target and obstacles avoidance capability. Current ways of realizing S shapes need to combine multi-bending segments which need to control the different segment separately. We propose a cross-helical tendons actuated DCM that can realize S shapes just using one segment. With two pairs of cross-helical tendons, it can realize omin-directional S shapes, where two types of planar S shapes are investigated in this paper. A prototype with 8mm diameter and 80mm length is built and the kinematics characteristics are investigated. The results show it can well realize the desired S shapes. The tip directional capability and obstacles avoidance capability are compared with C shape DCM.

关键词： Shape Tendons Manipulators Surgery Springs Kinematics

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Design of a general resilient robotic system based on axiomatic design theory

Design of a general resilient robotic system based on axioma...

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IEEE/ASME (AIM) International Conference on advanced Intelligent Mechatronics

作者： Tan Zhang Dan Zhang Madan M. Gupta Wenjun Zhang Advanced Engineering Design Laboratory University of Saskatchewan Canada Robotics & Automation Laboratory University of Ontario Institute of Technology Canada Intelligent Systems Research Laboratory University of Saskatchewan Canada

Resilient robotic systems are a kind of robotic system that is able to recover their original function after partial damage of the system. This is achieved by making changes on the partially damaged robot. The general resilient robot, which makes sense by including active joints, passive joints, passive links, and passive adjustable links, was proposed in order to explore its resilience. The axiomatic design theory (ADT) is applied to develop the resilient robot. First, a general architecture of robots was proposed, which is characterized as under-actuated robot. Second, a docking system was developed, which is the key part of incorporating the proposed architecture in the design of the mechanical system of the resilient robot, and this thus enables the realization of the proposed architecture.

关键词： Joints Context Robot sensing systems Resilience Redundancy Connectors

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Real time gait planning for a mobile medical exoskeleton with crutche

Real time gait planning for a mobile medical exoskeleton wit...

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IEEE International Conference on robotics and Biomimetics

作者： Shaomin Zhang Can Wang Xinyu Wu Yongqiang Liao Xinpeng Hu Can Wu Shenzhen College of Advanced Technology University of Chinese Academy of Sciences Guangdong Provincial Key Laboratory of Robotics and Intelligent System Chinese Academy of Sciences Department of Mechanical and Automation The Chinese University of Hong Kong

ISBN: (纸本)9781467396769

An exoskeleton with actuators at the hip and knee joints has been developed for spinal cord injury patients. And a pair of crutches is utilized to help paraplegic patients maintain balance during walking. A real time gait planning strategy has been implemented to allow the users to walk stable and natural. This strategy models the human-machine coupling system as a quadruped robot, adjusts and corrects gait before each step according to real time responses of multiple sensors. Taking into account the kinematic model of people wielding crutches, this gait planning strategy provides a larger stability margin for the system. Finally, experiments are performed on the SIAT exoskeleton in order to verify the effectiveness of the proposed method.

关键词： Legged locomotion Exoskeletons Robot kinematics Stability analysis Foot Software

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