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10th World Congress on Intelligent control and Automation, WCICA 2012

作者： Jia, Pengxiao Li, En Zizhe Liang Yanhui Qiang State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academic of Sciences Beijing 100190 China

ISBN: (纸本)9781467313988

An aerial work platform (AWP) is a type of off highway vehicle with a long beam to provide temporary access to inaccessible areas [1]. The motivation of the research is to increase its productivity, safety and reduce the manipulation complexity during the operation process. In this paper, a simplified two-link model of AWP's arm is given. The control scheme based on neural network modeling technology is employed to steer the AWP's arm to track the desired trajectories asymptotically, which requires neither the evaluation of inverse dynamical model nor the time-consuming training process. The simulation results validate the effectiveness of the proposed approach. © 2012 IEEE.

关键词： Antennas

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A mobile robot self-localization approach based on unidirectional vision

A mobile robot self-localization approach based on unidirect...

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2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012

作者： Wang, Ke Huo, Guanglei Zhao, Lijun Li, Ruifeng Wang, Wei Key Laboratory of Measurement and Control of CSE Ministry of Education Nanjing 210096 China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin Heilongjiang Province 150080 China Research Center of Information and Control Dalian University of Technology Dalian Liaoning Province 116024 China

ISBN: (纸本)9781467312776

This paper presents a self-localization system for mobile robot in large-scale indoor environments. For a structured corridor environment, the vision information is adopted to track the robot pose with a predefined hybrid metric-topological map. A nonlinear unidirectional camera model is developed to project the probabilistic map elements with uncertainty manipulation. Extended Information filters are deployed to estimate the robot pose. The proposed system can perform localization tasks on-the-fly, with the features of efficient map modeling and computational simplicity. Experimental results are provided to demonstrate the performance and effectiveness of the proposed techniques. © 2012 IEEE.

关键词： Mobile robots

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Equivalent circuit simulation model of cantilevered piezoelectric bimorph energy harvester

Equivalent circuit simulation model of cantilevered piezoele...

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2011 International Conference on Mechanical Engineering, Materials and Energy, ICMEME 2011

作者： Wang, Hongyan Shan, Xiaobiao Xie, Tao State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin 150001 China College of Computer and Control Engineering Qiqihar University Qiqihar 161006 China

ISBN: (纸本)9783037853405

This paper presented an equivalent circuit simulation model of the cantilevered piezoelectric bimorph energy harvester for predicting the electrical power output of the energy harvester. The alternating voltage in the equivalent circuit model is identified from FE transducer model and the parameters of the resistance, capacitance and inductance in the equivalent circuit model are identified from FE actuator model. To valid the equivalent circuit simulation model, the power output values are compared with those obtained from the coupled piezoelectric-circuit finite element analysis. The results demonstrate the accuracy of the equivalent circuit simulation model. © (2012) Trans Tech Publications, Switzerland.

关键词： Equivalent circuits

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Complex impedance matching for power improvement of a circular piezoelectric energy harvester

Complex impedance matching for power improvement of a circul...

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2011 International Conference on Mechanical Engineering, Materials and Energy, ICMEME 2011

ISBN: (纸本)9783037853405

The impedance matching and the optimization of power from a circular piezoelectric energy harvester with a central-attached mass are studied. A finite element model is constructed to analyze the electrical equivalent impedance of the circular piezoelectric energy harvester. Furthermore, the complex conjugate matching load is used to extract the maximum output power of the energy harvester. The power output from complex conjugate matching load is compared with the power output from the resistive matching load and a constant resistance, separately. The results suggest that the complex conjugate matching can result in a significant increase of the output power for all frequencies. The effective bandwidth of the piezoelectric energy harvester is extended significantly. © (2012) Trans Tech Publications, Switzerland.

关键词： Finite element method

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Point stabilization of mobile robots by genetic sliding mode approach with neural dynamics model on uneven surface

Point stabilization of mobile robots by genetic sliding mode...

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2012 IEEE International Conference on Automation Science and Engineering: Green Automation Toward a Sustainable Society, CASE 2012

作者： Cao, Zhengcai Zhao, Yingtao Fu, Yili College of Information Science and Technology Beijing University of Chemical Technology Beijing China State Key Laboratory of Robotics and Systems Harbin Institute of Technology Harbin China

ISBN: (纸本)9781467304283

In this work, a novel point stabilization control strategy for mobile robots which moves on uneven surface is presented. Firstly, sliding mode method is adopted to extend the nonlinear kenimatic control law to dynamic system, so that the robot is driven by torques. Then, to solve the speed and torque jump problem, the neural dynamics model is integrated into the presented controller. In addition, we utilize genetic algorithm (GA) to optimize the controller parameters for obtaining better stabilization performance. The stability of the proposed control system is analyzed by using Lyapunov theory. Finally, simulation results are given to illustrate the effectiveness of the proposed control scheme. © 2012 IEEE.

关键词： Mobile robots

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Research on the Principle of Compiled-typed NC System

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10th Asia-Pacific Conference on Materials Processing (APCMP 2012)

作者： Zhou, Liang Ren, Yan Hai Lang, Yue Dong Liao, Zhi Rong State Key Laboratory of Robotics and System (HIT) Hei Longjiang Province China Harbin Institute of Technology Hei Longjiang Province China Beijing Aerospace Control Instrument Research Institute Beijing China

ISBN: (纸本)9783037853993

To solve the conflict between OS's real time property and NC system's open and universal property [1], a compiled-typed NC system is advanced based on analysis and research of the structure of modern NC systems. This kind of system can diminish the affection of the real-time OS's respond precision to machining with high speed and high precision and improve the frequency of interpolation sampling and respond precision. Motion control experiment and parametric curve direct interpolation experiment are finished by bonnet polishing machine tool with compiled-typed NC prototype system, proving that working principle of compiled-typed NC system is correct and validity.

关键词： NC system Compile USB ARM Real-time

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Orientation-Singularity Representation and Orientation-Capability Computation of a Special Class of the Gough-Stewart Parallel Mechanisms Using Unit Quaternion

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Chinese Journal of Mechanical Engineering 2012年第6期25卷 1096-1104页

作者： LI Baokun1, 2, CAO Yi1, 3, *, ZHANG Qiuju1, and HUANG Zhen4 1 School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China 2 School of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001, China 3 state key laboratory of Fluid Power Transmission and control, Hangzhou 310027, China 4 robotics Research Center, Yanshan University, Qinhuangdao 066004, China 1. School of Mechanical Engineering Jiangnan University Wuxi 214122 China 2. School of Mechanical Engineering Anhui University of Science and Technology Huainan 232001 China 3. State Key Laboratory of Fluid Power Transmission and Control Hangzhou 310027 China 4. Robotics Research Center Yanshan University Qinhuangdao 066004 China

Singular configuration seriously affects the performance of the Gough-Stewart parallel mechanism and has attracted many researchers’ attentions. However, most of existing topics often focus on the position-singularity of the mechanism for a constant-orientation, but few reports research the orientation-singularity for a given position. In order to investigate the orientation-singularity of the Gough-Stewart parallel mechanisms with two dissimilar semi-regular hexagonal platforms for a given position, after constructing the discrimination matrix of the singular configuration of the mechanism and computing the determinant of this matrix by using unit quaternion as the orientation parameters which can avoid the singularities in parameterization, a general symbolic expression representing the three-dimensional orientation-singularity locus for a given position is obtained and the three-dimensional view of the orientation-singularity locus is further described. The orientation-singularity-free void exists inside the orientation-singularity locus, but the shape of the orientation-singularity-free void is irregular and inconvenient for the design of the mechanism. The minimal inscribed sphere of the three-dimensional orientation-singularity locus namely the orientation-singularity-free ball is described. The radius of the ball orientation-capability is used as the measurement for the orientation-singularity-free void size. A new efficient algorithm is proposed for the computation of the orientation-capability. Finally, the influences of the geometry parameters and the different positions of the mechanism on the orientation-capability are discussed. A new method of the singularity analysis of the Gough-Stewart parallel mechanism is advanced based on the unit quaternion, and the research finds have important referential value for the configuration parameters optimization of this class of the parallel mechanisms with the goal of having the maximal singularity-free zone.

关键词： parallel mechanism unit quaternion orientation-singularity orientation-singularity-free void orientation-capability

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A symbol identifier based recognition and relative positioning approach suitable for multi-robot systems 1

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5th International Conference on Intelligent robotics and Applications, ICIRA 2012

作者： Qian, Hanbo Yuan, Wenbo Liu, Xilong Cao, Zhiqiang Zhou, Chao Tan, Min Center of Coordination and Support of SASTIND Beijing 100081 China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China

ISBN: (数字)9783642335037

ISBN: (纸本)9783642335020

In this paper, a symbol identifier based recognition and relative positioning approach suitable for multi-robot systems is proposed. The symbol identifier is composed of central area and peripheral area, and there exists radial spokes in central area. The recognition approach utilizes some features including luminance feature of center point, luminance difference between center point and its ambient region, the number and distribution of spokes as well as the shape of peripheral area to filter the points in the image. Finally, the resulting pixel points set to characterize the center points of symbol identifiers is generated. On this basis, the positions of these center points relative to the camera are then calculated. The proposed approach is verified by the experiments. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Multipurpose robots

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Structural analysis and design of round belt drive snake-like robot

Structural analysis and design of round belt drive snake-lik...

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IET International Conference on Information Science and control Engineering 2012 (ICISCE 2012)

作者： Xuandon Su Junyao Gao Zhengyang Zhao Qianying Wu Chengzu Huang Intelligent Robotics Institute Key Laboratory of Biomimetic Robots and Systems Ministry of education State Key Laboratory of “Intelligent control of complex systems and decision” School of Mechatronical Engineering Beijing Institute of Technology Nandajie Zhongguancun Haidian 100081 China

Twisting between adjacent modules drive is the main way to drive the snake-like robot. It is hard to build a mathematical model for the kind of snake-like robot and the control of it is very complex in the realistic environment. In purpose of developing a new kind of snake-like robot which is easy to model, a new way to drive snake-like robot which we call skin drive was invented. With this way, structure of snake-like robot can be very simple and easy to model. Besides control of snake-like robot can be simple. Eventually a snake-like robot was built and it is called round belt drive snake-like robot. Through some experiment and analysis, it is concluded that this new kind of snake-like robot is easy to model and easy to control and its structure is simple to build. In this paper, three important topics were analyzed and elaborated. They are round belt analysis and design, active pulley structure and guide pulley arrangement. Of course, some experiments were done to verify the round belt drive snake-like robot performance. Some experiment process and results were shown at the end in this paper.

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Carrier-based sensor deployment by a mobile robot for wireless sensor networks

Carrier-based sensor deployment by a mobile robot for wirele...

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2012 12th International Conference on control, Automation, robotics and Vision, ICARCV 2012

作者： Wang, Zhengjie Zhao, Xiaoguang Qian, Xu College of Information and Electrical Engineering Shandong University of Science and Technology Qingdao China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China Beijing China

ISBN: (纸本)9781467318716

We consider a realistic wireless sensor deployment strategy by which mobile robot deploys sensor nodes when it moves along the linear backbone network with some branches. Because of its finite load capacity, the robot has to repeatedly move back to the position where all sensors are temporarily stored and reload sensor nodes, which leads to the robot has to travel the path many times and consumes more energy. We present a Shortest Traveling Path for Robot (STPR) algorithm by which the robot can reduce the traveling path and achieve the required coverage. All nodes are stored at the temporary starting point and mobile robot continuously loads sensors and moves to the destination, dropping some sensor to meet the basic coverage and connectivity requirements. The mobile robot arrives at the far intersection and deploys sensors along the branches in accordance with the algorithm rules, and then returns the recent branch when having enough sensors. Otherwise the robot moves back and deploys sensors on the back path. The robot reloads sensors and repeats the deployment process until all the branches and backbone is finished. The paper proves that the algorithm is effective compared with the common methods. Simulation results show that the algorithm effectively reduces the moving distance at the randomly generated network. © 2012 IEEE.

关键词： Mobile robots

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