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IEEE Nanotechnology Materials and Devices Conference (NMDC)

作者： Shuai Yuan Lianqing Liu Zhidong Wang Ning Xi Yuechao Wang Zaili Dong Zhiyu Wang Shenyang Jianzhu University Shenyang China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy and Sciences Shenyang China Chinese Academy of Sciences Beijing China Department of Advanced Robotics Chiba Institute of Technology Chiba Japan Department of Electrical and Computer Engineering Michigan State University USA

AFM has been proved to be a powerful nano-manipulation tool taking advantage of its ultra high resolution and precision. However the large spatial uncertainties associated with AFM tip positioning dual to the PZT nonlinearity and thermal drift are still challenging problems, which hinders its wide application especially in building complex structures In this paper, a probabilistic approach combined with the Kalman filter based localization algorithm is proposed to improve the accuracy of the tip positioning in the task space coordinate frame. A motion model based on the Prandtl-Ishlinskii (PI) model is established, the distribution of model error is statistically obtained through the experimental calibration process. In addition, to further reduce the tip position uncertainties, an environment measurement models is developed through sensing the landmark intermittently with local scanning method during manipulation. Both the simulations results and experimental results are presented to demonstrate the validity of the proposed method.

关键词： Kalman filters Position measurement Probabilistic logic Uncertainty Nanobioscience Accuracy Motion measurement

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An extended PI model for hysteresis and creep compensation in AFM based nanomanipulation

An extended PI model for hysteresis and creep compensation i...

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IEEE International Conference on robotics and Biomimetics

作者： Zhiyu Wang Lianqing Liu Zhidong Wang Zaili Dong Shuai Yuan Faculty of Electrical and Control Engineering Liaoning Technical University Huludao China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy and Sciences Shenyang China Chinese Academy and Sciences Beijing China Department of Advanced Robotics Chiba Institute of Technology Chiba Japan Chinese Academy of Sciences Beijing Beijing CN

ISBN: (纸本)9781424493197

One of the prerequisites for AFM based nanomanipulation is that the tip position can be controlled accurately, while this prerequisite is still hindered by the large model uncertainties aroused from PZT nonlinearity such as hysteresis and creep. In this paper, an Extended Prandtl-Ishlinskii (EPI) model is proposed to solve these problems. The main advantage of EPI model over conventional PI model is that the EPI model can compensate the positioning error caused by hysteresis and creep simultaneously through adopting the new adaptive basic operator. The experimental results demonstrate the effectiveness and validity of EPI model in depicting the PZT hysteresis and creep prosperities.

关键词： Creep Hysteresis Fitting Data models Adaptation model Robot sensing systems

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Preliminary investigations on laminin coatings for flexible polyimide/platinum thin films for PNS applications

Preliminary investigations on laminin coatings for flexible ...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： S. Bossi A. Benvenuto P. Wieringa G. Di Pino E. Guglielmelli T. Boretius T. Stieglitz X. Navarro S. Micera Systems Laboratory Scuola Superiore Sant Anna Advanced Robotics Technology Pontedera Italy Laboratory of Biomedical Robotics and Biomicrosystems Università Campus Bio-Medico di Roma Rome Italy Department of Microsystems Engineering IMTEK University of Freiburg Freiburg im Breisgau Germany Universitat Authnòma de Barcelona Barcelona Spain Institute of Automation Swiss Federal Institute of Technology Zurich Switzerland

The aim of this work was to investigate the possibility to obtain stable bioactive coatings for polyimide/platinum neural interfaces based on thin film technology for applications into the peripheral nervous system (PNS). Laminin (LI), a glycoprotein of the extracellular matrix, which guides and promotes differentiation and growth of neurons, was selected to deposit bioactive coatings. Dip-coating was performed on dummy structures at different LI concentrations. Indirect methods allowed to identify and characterize laminin on coated samples. Mechanical stability was also confirmed by indirect evaluations. Pilot experiments with differentiated PC12 cells, by the addition of nerve growth factor (NGF), showed improved neurite outgrowth on the coated probes compared to bare polyimide samples.

关键词： Polyimides Surface treatment Coatings Platinum Electrodes Microscopy

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Obstacle-navigation control of power transmission lines inspection robot

Obstacle-navigation control of power transmission lines insp...

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IEEE International Conference on robotics and Biomimetics

作者： Ludan wang Hongguang Wang Lijin Fang Center for Robot Engineering Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen Guangdong China CAS-Designated Key Robotics Laboratory Shenyang Institute of Automation Chinese Academy of Sciences Shenyang Liaoning China

ISBN: (纸本)9781424417612;1424417619

This paper presents an inspection robot suspended on power transmission lines based on a novel movement mechanism with two manipulators and a body. After the inspection robot configuration is described, the process of obstacle-navigation are analyzed in details. During the process of auto obstacle-navigation, power line grasping control should be realized exactly with the arm of inspection robot. According to the transmission line geometry characteristic and the theory of perspective projection, a single camera stereovision method has been set up to detect the orientation and position vector of the power transition line. Based on that arithmetic and theory of visual servoing, line grasping servoing model is built up to achieve line-grasping control. Experimental results show that the robot can realize auto obstacle-navigation control and proves the valid of the control method.

关键词： Power transmission lines Inspection Mobile robots Automatic control robotics and automation Visual servoing Control systems Poles and towers Manipulators Arithmetic

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F&A compensating variable bang-bang control algorithm for pneumatic driving glass-wall cleaning robot

F&A compensating variable bang-bang control algorithm for pn...

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2007 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： W. Wang H. X. Zhang W. P. Yu G. H. Zong J. W. Zhang Robotics Institute School of Mechanical Engineering and Automation Beijing Aeronautics and Astronautics University Beijing China Institute of Technical Aspects of Multimodal Systems Department of Computer Science University of Hamburg Hamburg Germany Cognitive Technology Laboratory Shenzhen Institute of Advanced Technology Shenzhen China

To overcome the overshoot and oscillation in the normal Bang-Bang controller applied in the pneumatic driving glass-wall cleaning robot, this paper presents a F&A compensating variable Bang-Bang control algorithm for the pneumatic position servo. Besides a new cylinder driving plan is designed, the control algorithm is also improved by adding a fiction force compensating item in the chamber force evaluation equation. To adjust the controlling parameters dynamically, certain increasing functions, such as step function, linear function and arc-tangent function, are used to define the piston's expectative acceleration along with the reduction of the piston's position error. To testify the feasibility of the control algorithms with the above three expectative acceleration setting functions respectively, a pneumatic glass-wall cleaning robot "Sky Cleaner 4" is used as a testing platform to implement a series of on-load position servo experiments. And the different results of them are compared.

关键词： Bang-bang control Cleaning Robots Servomechanisms Testing Algorithm design and analysis Force control Equations Acceleration Error correction

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TRACKING CONTROL IN THE PRESENCE OF NONLINEAR DYNAMIC FRICTIONAL EFFECTS: ROBOT EXTENSION

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Asian Journal of Control 2008年第3期1卷

作者： M. Feemster D.M. Dawson A. Behal W. Dixon Matthew Feemster received the B.S degree in Electrical Engineering from Clemson University Clemson South Carolina in December 1994. Upon graduation he remained at Clemson University and received the M.S. degree in Electrical Engineering in 1997. During this time he also served as a research/teaching assistant. His research work focused on the design and implementation of various nonlinear control algorithms with emphasis on the induction motor and mechanical systems with friction present. He is currently working toward his Ph.D. degree in Electrical Engineering at Clemson University. Darren M. Dawson was born in 1962 in Macon Georgia. He received an Associate Degree in Mathematics from Macon Junior College in 1982 and a B.S. Degree in Electrical Engineering from the Georgia Institute of Technology in 1984. He then worked for Westinghouse as a control engineer from 1985 to 1987. In 1987 he returned to the Georgia Institute of Technology where he received the Ph.D. Degree in Electrical Engineering in March 1990. During this time he also served as a research/teaching assistant. In July 1990 he joined the Electrical and Computer Engineering Department and the Center for Advanced Manufacturing (CAM) at Clemson University where he currently holds the position of Professor. Under the CAM director's supervision he currently leads the Robotics and Manufacturing Automation Laboratory which is jointly operated by the Electrical and Mechanical Engineering departments. His main research interests are in the fields of nonlinear based robust adaptive and learning control with application to electro-mechanical systems including robot manipulators motor drives magnetic bearings flexible cables flexible beams and high-speed transport systems. Aman Behal was born in India in 1973. He received his Masters Degree in Electrical Engineering from Indian Institute of Technology Bombay in 1996. He is currently working towards a Ph.D in Controls and Robotics at Clemson University. His research focuses on the control of no

In this paper, we extend the observer/control strategies previously published in [25] to an n -link, serially connected, direct drive, rigid link, revolute robot operating in the presence of nonlinear friction effects modeled by the Lu-Gre model. In addition, we also present a new adaptive control technique for compensating for the nonlinear parameterizable Stribeck effects. Specifically, an adaptive observer/controller scheme is developed which contains a feedforward approximation of the Stribeck effects. This feedforward approximation is used in a composite controller/observer strategy which forces the average square integral of the position tracking error to an arbitrarily small value. Experimental results are included to illustrate the performance of the proposed controllers.

关键词： Friction compensation nonlinear control

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Lower Body Design of the `iCub' a Human-baby like Crawling Robot

Lower Body Design of the `iCub' a Human-baby like Crawling R...

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IEEE-RAS International Conference on Humanoid Robots

作者： N.G. Tsagarakis M. Sinclair F. Becchi G. Metta G. Sandini D.G. Caldwell Center of Robotics and Automation University of Sanford Salford UK Advanced Robotics TELEROBOT Genoa Italy LIRA-Laboratory DIST University of Genova Genoa Italy

ISBN: (纸本)1424401992

The development of robotic cognition and a greater understanding of human cognition form two of the current greatest challenges of science. Within the RobotCub project the goal is the development of an embodied robotic child (iCub) with the physical and ultimately cognitive abilities of a 2frac12 year old human baby. The ultimate goal of this project is to provide the cognition research community with an open human like platform for understanding of cognitive systems through the study of cognitive development. In this paper the design of the mechanisms adopted for lower body and particularly for the leg and the waist are outlined. This is accompanied by discussion on the actuator group realisation in order to meet the torque requirements while achieving the dimensional and weight specifications. Estimated performance measures of the iCub are presented

关键词： Humanoid robots Humans Robot kinematics robotics and automation Leg Cognitive robotics Legged locomotion Cognition Pediatrics Anthropomorphism

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Hybrid Model of WT and ANFIS and Its Application on Time Series Prediction of Ship Roll Motion

Hybrid Model of WT and ANFIS and Its Application on Time Ser...

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Computational Engineering in Systems Applications, CESA, IMACS Multiconference on FLAGGED

作者： Hui Li Chen Guo Simon X. Yang Hongzhang Jin Automation and Electrical Engineering College Dalian Maritime University Dalian China Advanced Robotics and Intelligent Systems Laboratory School of Engineering University of Guelph Canada Automation College Harbin Engineering of Technology Harbin China

Based on the multi time and frequency scale and the nonlinear character of ship roll motion, a hybrid model prediction approach combining wavelet transform (WT) and adaptive neuro-fuzzy inference system (ANFIS) is proposed in this paper. By using multi-resolution nalysis (MRA) of WT, multilevel 1-D wavelet decompositions of roll motion are completed to obtain simple and regular period signals. Then the multiple-input/single-output (MISO) ANFIS model is employed as prediction model for the main decomposed signals above. Finally, a prediction result is given through linear combination. The simulation experiments demonstrate the proposed method can effectively reduce the prediction difficulty and obtain better prediction precision. This method can also be used in ship pitch and heave motion prediction

关键词： Predictive models Marine vehicles Wavelet analysis Wavelet transforms Multiresolution analysis Wavelet domain robotics and automation Educational institutions Intelligent robots Frequency

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Singular perturbation control for vibration rejection in HDDs with a PZT active suspension

Singular perturbation control for vibration rejection in HDD...

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45th IEEE Conference on Decision and Control 2006, CDC

作者： Pang, Chee Khiang Lewis, Frank L. Ge, Sam Shuzhi Guo, Xiao Chen, Ben M. Lee, Tong Heng IEEE Central Research Laboratory Research and Development Group Hitachi Ltd. 2880 Kozu Odawara Kanagawa 256-8510 Japan A STAR Data Storage Institute Singapore Singapore Department of Electrical and Computer Engineering National University of Singapore Singapore Singapore Advanced Controls and Sensors Group Automation and Robotics Research Institute University of Texas Arlington United States

ISBN: (纸本)1424401712

In this paper, the SPT (Singular Perturbation Theory) is applied to decompose the VCM's (Voice Coil Motor) and induced PZT active suspension's dynamics into fast and slow subsystems, respectively. The control system is decomposed into fast and slow time scale for controller designs, and control effectiveness is increased to tackle more DOFs (Degrees-Of-Freedom) via inner loop vibration suppression with measured high frequency VCM's and PZT active suspension's dynamics from the piezoelectric elements in the suspension. Experimental results on a commercial HDD with LDV (Laser Doppler Vibrometer) show effective suppression of the VCM and PZT active suspension's flexible resonant modes as well as an improvement of 39.9% in 3σ PES (Position Error Signal) during track following when compared to conventional notch-based servos. © 2006 IEEE.

关键词： Hard disk storage

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Singular Perturbation Control for Vibration Rejection in HDDs with a PZT Active Suspension

Singular Perturbation Control for Vibration Rejection in HDD...

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IEEE Conference on Decision and Control

作者： Chee Khiang Pang Frank L. Lewis Sam Shuzhi Ge Guoxiao Guo Ben M. Chen Tong Heng Lee Research Laboratory Research & Development Group Hitachi and Limited Odawara Kanagawa Japan Department of Electrical and Computer Engineering National University of Singapore Singapore Data Storage Institute Singapore Advanced Controls and Sensors Group Automation and Robotics Research Institute University of Texas Arlington USA

ISBN: (纸本)1424401704

In this paper, the SPT (singular perturbation theory) is applied to decompose the VCM's (voice coil motor) and induced PZT active suspension's dynamics into fast and slow subsystems, respectively. The control system is decomposed into fast and slow time scale for controller designs, and control effectiveness is increased to tackle more DOFs (degrees-of-freedom) via inner loop vibration suppression with measured high frequency VCM's and PZT active suspension's dynamics from the piezoelectric elements in the suspension. Experimental results on a commercial HDD with LDV (laser Doppler vibrometer) show effective suppression of the VCM and PZT active suspension's flexible resonant modes as well as an improvement of 39.9% in 3sigma PES (position error signal) during track following when compared to conventional notch-based servos

关键词： Vibration control Control systems Vibration measurement Coils Frequency measurement Time measurement Laser modes Vibrometers Resonance Servomechanisms

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