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Research on state-guided teleoperation assistance method

Research on state-guided teleoperation assistance method

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International Conference on Computer Science and Service system (CSSS)

作者： Xizhe Zang Jie Zhao Qingxin Meng State Key Laboratory of Robotics and System Harbin Institute of Technology Heilongjiang 150080 China School of Mechanical and Electrical Engineering Harbin Engineering University 150001 China

Toward the Internet-based robotic tasks, a state-guided teleoperation assistance method is presented. According to this method, the whole task can be identified into several states to direct the execution of teleoperation, through state definition, state recognition and state display. After building up an Internet-based teleoperation system centered on data fusion, the remote manipulations of medical treatment are accomplished finally. The experiment demonstrates that introduction of the assistance method alleviates the difficulties such as network time-delay effectively and operation efficiency, improving the global capacity of system.

关键词： Robots Grippers Sensor fusion Sensor systems Force

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An on-line gait generator for bipedal walking robot based on neural networks

An on-line gait generator for bipedal walking robot based on...

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IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Fei Wang Yuzhong Zhang Shiguang Wen Tinghui Ning College of Information Science and Engineering Northeastern University Shenyang China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin China

An on-line gait synthesis scheme for a bipedal walking robot is proposed. To realize efficient and human-like gait, MTi sensors were mounted on the lower limb of human subject to acquire kinematics information that can be integrated to the angular changes of hip and knee joints during walking. The time series angles were normalized and then sampled by cubic spline interpolation. By employing discrete-time Fourier Series, the samples were extracted into features, and further dimensionally reduced by using PCA to simplified features. By using ANNs, the nonlinear functional relations between gait parameters (i.e. cadence and stride) and simplified features that can be used to reconstruct angles of hip and knee joints were established. Walking experiments of a biped robot at slow, intermediate and fast speeds were conducted to validate the effectiveness of the proposed scheme. The results indicate that the synthesized gait is smooth, efficient and human-like. The proposed scheme can on-line generate the reference gait that covers a wide speed range for bipedal walking of robot.

关键词： Legged locomotion Joints Knee Hip Humans Principal component analysis

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Kinematic and dynamic optimizations of the redundant manipulator via local degrees of freedom

Kinematic and dynamic optimizations of the redundant manipul...

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International Conference on Mechanic Automation and Control engineering (MACE)

作者： Yushu Bian Zhihui Gao Min Liu State Key Laboratory for Robotics and System Harbin Institute of Technology Harbin China School of Mechanical Engineering and Automation Beihang University Beijing China

In order to conquer the difficulty of simultaneous optimizations on kinematic and dynamic indices of the redundant manipulator, a new type of redundant manipulator with local degrees of freedom is proposed. Redundant degrees of freedom are used to optimize kinematic index, and local degrees of freedom are used to optimize dynamic index. The corresponding optimization method is suggested. As a result, the kinematic and dynamic indices of the redundant manipulator can be optimized simultaneousely. Some simulations are carried out, and the optimization method is verified to be effective.

关键词： Manipulator dynamics Moment methods Kinematics Optimization Jacobian matrices

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Research on Auditory Display Technology Based on Visual Information

Research on Auditory Display Technology Based on Visual Info...

引用

International Conference on Multimedia and Signal Processing (CMSP)

作者： Xianchun Meng Shijie Dai Yuhong Liu Biao Xiang Zhidong Liu Zhi Lv School of Mechanical Engineering Hebei University of Technology Tianjin China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin China

A new recognizing obstacle method based on the visual information with the different voice was proposed in this paper, which overcame the flaw of the former ETA system to be unable to distinguish the outside obstacle concrete information. This method extraction goal object's color and the shape characteristic, with the established database retrieval math, distinguishes the goal object and then sends out the corresponding pronunciation. After a period of time's training, the blind person can skilled listen to the sound to know the obstacle information.

关键词： Image color analysis Feature extraction Shape Pixel Mutual information Object recognition Colored noise

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Optical flow based plane detection for mobile robot navigation

Optical flow based plane detection for mobile robot navigati...

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World Congress on Intelligent Control and Automation (WCICA)

作者： Zhongli Wang Jie Zhao State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin China School of Electronic and Information Engineering Beijing Jiaotong University Beijing China

Dominant plane detection is an essential task for an autonomous navigation of mobile robots equipped with a vision system, as we assume that robots move on the dominant plane. In this paper, based on optical flow, the image motions of points which located in a plane were described by planar flow. After the parameters of planar flow are estimated, the distance error of image points can be used for detecting the plane region from monocular image sequence. The proposed method includes three steps. First, the robust optical flow is estimated between two consecutive images from the image sequence. Then a geometry constraint provided by planar flow is applied to detect the plane regions in optical flow. And finally, some iterative procedures can be used for improving the results. Compared with the feature point based method which sometimes is invalid because of the lacking of texture, the optical flow based method can detect the ground plane even if there are not much more image features in the plane region. Some experiments with outdoor images have been conducted.

关键词： Computer vision Image motion analysis Optical imaging Adaptive optics Feature extraction Estimation Optical variables control

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The application of real-time operating system QNX in the computer modeling and simulation

The application of real-time operating system QNX in the com...

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International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC)

作者： Mingxin Hou Fenglei Ni Minghe Jin Li Jiang Hong Liu Yue Jin Mingbo Hou State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Heilongjiang China Institute of Robotics and Mechatronics German AeroSpace Center Munich Germany College of Electromechanical Engineering China University of Petroleum China Department of Electronic Engineering University of York UK

The objective of this study is to show the applications of the simulation implementation of QNX identified model combining with Matlab/Simulink platform, QNX C/C++ compiler and QNX real-time operating system. The HIT/DLR Hand II dexterous hand QNX real-time simulation model is generated by the Simulink platform and QNX C/C++ compiler link files. Moreover, this model can be implemented in the QNX real-time system. Simulations in the QNX real-time system show that the HIT/DLR Hand II dexterous hand QNX model which based on the methods in this research, was able to offer an attractive performance during both real-time simulation and feedback operations.

关键词： Mathematical model Real time systems Computational modeling Robots Operating systems Conferences Joints

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Dynamic simulation and gravity balancing optimization of spot welding robot based on RecurDyn

Dynamic simulation and gravity balancing optimization of spo...

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2011 IEEE International Conference Mechatronics and Automation(2011 IEEE机电一体化与自动化国际会议)

作者： Ping-Chun Xie Yu-Xian Gai Yan-Shen Wang Lian-Zheng Ge Department of Mechanical Engineering Harbin Institute of Technology at Weihai Weihai Shandong Provi State Key Laboratory of Robotics and System School of Mechatronics Harbin Institute of Technology Ha

Driving torques of a specific type of spot welding robot was simulated in RecurDyn, which provided useful information for motor selecting and gravity balancing. According to D-H parameters of the robot parts of the robot were modeled separately and then assembled to form the robot, in Pro/Engineer. Imported into RecurDyn and adding necessary constraints, the virtual prototype of the robot was constructed in RcurDyn for dynamic simulation. Time dependent torque variations of every joint were got by simulation, which facilitated motor selection. The spring for sustaining the gravity of robots links was also optimized through the simulation analysis of torques in Joint 2.

关键词： robot dynamic simulation RecurDyn gravity balance spring

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Scheme design of extended configuration for in-pipe robot adapting mechanism

Scheme design of extended configuration for in-pipe robot ad...

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International Conference on Measuring Technology and Mechatronics Automation

作者： Chen, Jun Chen, Tao Deng, Zongquan State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Heilongjiang 15001 China School of Naval Architecture Harbin Institute of Technology at Weihai Weihai Shandong 264209 China Linyi Entry-Exit Inspection and Quarantine Bureau Linyi Shandong 276034 China School of Mechtronic Engineering Harbin Institute of Technology Harbin Heilongjiang 15001 China

ISBN: (纸本)9780769542966

The configuration design of in-pipe robot adapting mechanism has a significant impact on its motion performance. By analyzing the operation principle and structure composition of adapting mechanism, the four-bar linkage is chosen as basic unit to make topological combination, the two kinds of linkage combination including input of prismatic pair are presented, the configuration schemes that meet the given design constraints are also synthesized, and the application examples of specific mechanisms are given. Which provides a new method for configuration extended design of in-pipe robot adapting mechanism. © 2011 IEEE.

关键词： Topology

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Design method of modular units for articulated in-pipe robot inspecting system

Design method of modular units for articulated in-pipe robot...

引用

2011 2nd International Conference on Digital Manufacturing and Automation, ICDMA 2011

ISBN: (纸本)9780769544557

A novel untethered autonomous motor driven in-pipe robot inspecting system has been designed in order to solve the internal defect inspection for long-distance pipeLine. Which includes motor driven traction robot and other multiple cyLindrical box modular units, the adjacent units are Linked by double hook joints and by three extended supporting wheels contacting the inner surface of pipe elastically to form the articulated multi-body system. Based on the virtual prototype technology, by means of the relations of structure and size for modular units and its connectors, to research the determine method of structure size meeting the needs of in-pipe robot inspecting system moved in elbow pipe. The method proposed this paper has been used in the design of engineering prototype, and whose structure size and mechanics performance have been proved can achieve the design indexes. © 2011 IEEE.

关键词： Machine design

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Design optimization of parallel manipulators with required pose resolution

Design optimization of parallel manipulators with required p...

引用

2011 IEEE International Conference on robotics and Automation(2011年IEEE世界机器人与自动化大会 ICRA 2011)

作者： Hao Li Yuru Zhang Jian S. Dai State Key Laboratory of Virtual Reality Technology and System Beihang University Beijing 100191 C Robotics Research Center Department of Mechanical Engineering Kings College London University of

Performance of a parallel manipulator heavily relies on its position/orientation resolution. Without a good resolution the manipulator is difficult to achieve a high stiffness. Therefore how to obtain the required resolution is a basic issue to design a parallel manipulator. This paper presents a method to solve the problem. Firstly, the mathematical definition of the position/orientation resolution is given. Then we discuss how to calculate them using Rayleigh quotient. And the design optimization problem is formulated. Fundamental concepts of the method are illustrated through a 3-RRR planar parallel manipulator. The design process to achieve an optimized task space of the required pose resolution is also demonstrated in the example.

关键词： Manipulators Haptic interfaces Joints Optimization Kinematics Jacobian matrices Conferences

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