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Design of industrial vibration transmitter using MEMS accelerometer

Journal of Physics: Conference Series 2006年第1期34卷 442-447页

作者： Pandiyan, Jagadeesh Umapathy, M. Balachandar, S. Arumugam, M. Ramasamy, S. Gajjar, Nilesh C. Larsen and Toubro Limited E-Engineering Solutions Vadodara-391740 Gujarat NH-8 Chhani India Department of Instrumentation and Control Engineering National Institute of Technology Tiruchirappalli-620015 Tamilnadu India Department of Electronics and Communication Engg. Arunai Engineering College Tiruvannamalai-606603 Tamilnadu India R and D Arunai Engineering College Tiruvannamalai-606603 Tamilnadu India Department of Electrical and Electronics Engineering N P A Centenary Polytechnic Kotagiri-643217 Tamilnadu India Department of Mechanical Engineering Institute of Technology Nirma University Ahmedabad-382481 Gujarat India

This paper presents the overall design of an industrial vibration transmitter using Micro Electro Mechanical System (MEMS) capacitive accelerometer. It describes the accelerometer sensor interfacing circuit, rms-to-dc converter and voltage to current loop converter circuit design, calibration procedure and mounting methods. The industrial vibration transmitter output can be customized to obtain either acceleration or velocity with root mean square (rms) or peak (pk) value signal. The electronic circuit was designed to measure vibration in motion. The output of the transmitter is a current signal (4-20mA) which is proportional to input acceleration (0-10g rms). The AC coupling circuit for accelerometer sensor interfacing, RMS detector and industrial current loop converter circuit are implemented in a single printed circuit board. The prototype consists of 2 pin top connector for power input (24VDC), current output signal and stainless steel mechanical housing assembly with bottom thread connection for mounting. The loop powered acceleration vibration transmitter is employed for vibration monitoring and control applications. Keywords: Vibration transmitter, MEMS, capacitive accelerometer, AC coupling, RMS detector, current loop converter, condition monitoring. © 2006 IOP Publishing Ltd.

关键词： AC coupling Capacitive accelerometer Condition monitoring Current loop converter MEMS RMS detector Vibration transmitter

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Investigation of a phenylalanine-biosensor system for phenylketonuria detection

Investigation of a phenylalanine-biosensor system for phenyl...

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2005 27th Annual International Conference of the engineering in Medicine and Biology Society, IEEE-EMBS 2005

作者： Wang, Zhuo Chen, Ya-Zhu Zhang, Su Zhou, Zhen Biomedical Instrument Institute Shanghai Jiaotong University 1954 Huashan Rd. Shanghai 200030 China College of Measure-control Technology and Communication Engineering Harbin University of Science and Technology 52 Xuefu Rd. Harbin Heilongjiang 150080 China

ISBN: (纸本)0780387406

Detection and prevention of Phenylketonuria (PKU) is becoming more and more important. However, the current methods are either imprecise or time-consuming. We propose a biosensor system based on phenylalanine ammonia-lyase (PAL) immobilized on an ammonia electrode to measure blood phenylalanine for PKU prevention. The biosensor exhibits good linearity from 10-5000μM and the response time is only about 2 minutes. It remains stable for at least 5 days and less than 20% drop of the original activity after ten day storage at 4, while the service life of the biosensor could be up to 30 days. We also develop an intelligent system to ensure optimal conditions for operation and preservation of the biosensor and to make detection more convenient and reliable. All of these advantages indicate that the newly developed method could be a better one for solving the problems of PKU detection. © 2005 IEEE.

关键词： Biosensors

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Performance analysis of an adaptive medium access control protocol for robot communication

Performance analysis of an adaptive medium access control pr...

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International Conference on Parallel and Distributed Systems (ICPADS)

作者： Junpei Arai Akio Koyama L. Barolli Graduate School of Science and Engineering Yamagata University Japan Department of Information and Control Engineering Yamagata College of Industry and Technology Japan Department of Informatics Yamagata University Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Japan

In autonomous distributed robot systems, many robots cooperate together to carry out many difficult tasks that single robot can not realize. But, in order to cooperate together the robots should communicate with each other. Therefore, the communication among robots is very important problem to be solved. In this paper, we propose an adaptive reservation-time division multiple access (AR-TDMA) medium access control protocol. We carried out computer simulation to evaluate the performance of proposed method. The simulation results show that the proposed protocol has better scalability characteristics and object transportation time compared with a conventional protocol.

关键词： Performance analysis Programmable control Adaptive control Media Access Protocol Access protocols Robots Transport protocols Computer simulation Computational modeling Scalability

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A new MAC protocol for robot communication and its performance evaluation

A new MAC protocol for robot communication and its performan...

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International Conference on Distributed Computing Systems Workshop

作者： J. Arai A. Koyama L. Barolli Graduate School of Science and Engineering Yamagata University Japan Department of Information and Control Engineering Yamagata College of Industry and Technology Japan Department of Informatics Yamagata University Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Japan

In autonomous distributed robot systems, many robots cooperate together to carry out many difficult tasks that single robot cannot realize. But, in order to cooperate together the robots should communicate with each other. Therefore, the communication among robots is very important problem to be solved. In this paper, we propose and evaluate an adaptive reservation-time division multiple access (AR-TDMA) medium access control protocol. We carried out computer simulation to evaluate the performance of proposed protocol. The simulation results show that the proposed protocol has better transmission characteristics compared with a conventional protocol.

关键词： Media Access Protocol Access protocols Service robots Medical robotics Multiaccess communication Mobile communication Time division multiple access Robot sensing systems control engineering Educational institutions

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Novel MEMS Electrothermal Actuators & Its Application

Novel MEMS Electrothermal Actuators & Its Application

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IEEE India Conference (INDICON)

作者： J. Pandiyan S. Balachandar S. Ramaswamy M. Arumugam M. Umapathy L&T Technology Centre Larsen and Toubro Limited Barodra Gujarat India Department of Electronics & Communication Engineering Arunai Engineering College Tiruvannamalai India Department of Electrical & Electronics Engineering NPACPT College India R & D Arunai Engineering College Tiruvannamalai Tamil Nadu India Department of Instrumentation & Control Engineering National Institute of Technology Tiruchirappalli Tamil Nadu India

This paper presents the design and Finite Element Model (FEM) simulation of a novel electrothermal microactuators and arrays. It is a single material microactuator which deflects at its tips by differential thermal expansion of its constituent parts. The electrothermal actuator consists of three thin arms, three thin blades and two electrical connection pads. The goal of this coupled electrothermal actuator design was to multiply the force by adding the individual contributions of all the three actuators. The difference in magnitude of blade deflections depends on the geometrical characteristics of the actuators. The thermal deformation and thermal stability are easily controllable. The simulation employing ANSYS/Multiphysics software results include force, deflection, thermal stress, ideal electrothermal actuator and array geometries. The main advantage of this electrothermal actuator is large deflection of blades with very low actuation voltage in comparison with electrostatic actuators. A typical application in a micromirror is shown to illustrate the utility of these actuators and arrays.

关键词： Micromechanical devices Electrothermal effects Blades Microactuators Thermal force Thermal stresses Electrostatic actuators Finite element methods Thermal expansion Arm

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Fully differential leapfrog-type current mode MOCC II-based filters

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Beijing Gongye Daxue Xuebao / Journal of Beijing University of technology 2005年第6期31卷 570-573页

作者： Wang, Chun-Hua Shen, Guang-Di School of Computer and Communication Hunan University Changsha 410082 China Beijing Optoelectronic Technology Laboratory College of Electronic Information and Control Engineering Beijing University of Technology Beijing 100022 China

In order to restrain odd-order harmonic distortion and common model disturbing signal effectively, a MOCC II-based filter circuit with high-order fully differential leapfrog-type current mode is presented and corresponding design scheme is proposed. The PSPICE simulation to 4th Butterworth filter with 1 MHz but frequency is made. Simulation results show that the circuit can restrain odd-order harmonic distortion and common model disturbing signal more effectively, with low sensitifity of passive LC ladder-type network.

关键词： Electric filters

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An adaptive medium access control protocol for robot inter-communication in autonomous distributed systems

An adaptive medium access control protocol for robot inter-c...

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International Conference on Advanced Information Networking and Applications (AINA)

In autonomous distributed robot systems many robots cooperate together to carry out many difficult tasks that single robots can not realize. But, in order to cooperate together the robots should communicate with each other. Therefore, the inter-communication among robots is very important problem to be solved. We propose an adaptive reservation-time division multiple access (AR-TDMA) medium access control protocol which can realize a real-time communication among robots in a heterogeneous environment by using a reservation mechanism. Also, by using an adaptive time slot allocation method, the protocol has a flexible behavior and can deal with the changes of number of robots. Furthermore, the proposed protocol can reduce the packet collision probability.

关键词： Programmable control Adaptive control Media Access Protocol Access protocols Service robots Medical robotics Multiaccess communication Mobile communication Time division multiple access control engineering

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AN EFFICIENT MULTI-PURPOSE OPTIMIZATION METHOD FOR QOS ROUTING USING GENETIC ALGORITHM

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Journal of Interconnection Networks 2004年第4期5卷 409-428页

作者： AKIO KOYAMA LEONARD BAROLLI GENCI CAPI BERNADY O. APDUHAN JUNPEI ARAI ARJAN DURRESI Department of Informatics Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan Department of Information and Communication Engineering Fukuoka Institute of Technology (FIT) 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811- 0295 Japan Department of System Management Fukuoka Institute of Technology (FIT) 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811-0295 Japan Department of Intelligent Informatics Kyushu Sangyo University 2-3-1 Matsukadai Higashi-ku Fukuoka 813-8503 Japan Department of Information and Control Engineering Yamagata College of Industry and Technology 1-2-2 Matsuei Yamagata 990-2473 Japan Department of Computer Science Louisiana State University Baton Rouge LA 70803 USA

In order to support multimedia communication, it is necessary to develop routing algorithms that make decisions based on multiple Quality of Service (QoS) parameters. This is because new services such as video on demand and remote meeting systems have multiple QoS requirements. However, the problem of QoS routing is difficult because finding a feasible route with two independent path constraints is NP-complete problem. Also, QoS routing algorithms for broadband networks must be adaptive, flexible, and intelligent for efficient network management. In this paper, we propose a multi-purpose optimization method for QoS routing based on Genetic Algorithm (GA). The simulation results show that the proposed method has a good performance and therefore is a promising method for QoS routing.

关键词： Broadband Networks Genetic Algorithm QoS Routing Multi-purpose Optimization

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Robust controller design for RTP system using structured uncertainty approach

Robust controller design for RTP system using structured unc...

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SICE Annual Conference

作者： Sang Kyung Lee Jong Hae Kim Do Chang Oh Hong Bae Park Department of Computer Applied Control Doowon Technical College Ansung South Korea Sensor Technology Research Center Kyungpook National University Taegu South Korea Department of Information Electronics and Communication Engineering Konyang University South Korea School of Electronic and Electrical Engineering Kyungpook National University Taegu South Korea

In this paper, we propose an robust controller design of rapid thermal processing (RTP) system using the structured uncertainty approach. Using the weighted mixed sensitivity function, we solve the robust stability problem against disturbance and temperature variation, and design a /spl mu/ controller using the curve fitting method against structured uncertainty. Finally, the simulation results are proposed to show the validity of the proposed method.

关键词： Robust control control systems Uncertainty Temperature control Robust stability Thermal stresses communication system control Temperature sensors Ovens Semiconductor device modeling

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Dynamic Properties of the Visco-Elastic Actuator Designed as an Artificial Muscle

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Journal of Robotics and Mechatronics 1995年第6期7卷 443-448页

作者： Saito, Masami Tamura, Youjiro Furusho, Junji Department of Electronic and Information Engineering Suzuka College of Technology Shiroko-cho Mie Suzuka510-02 Japan Department of Physics Suzuka College of Technology Shiroko-cho Mie Suzuka510-02 Japan Department of Mechanical and Control Engineering The University of Electro-Communication 1-5-1. Chofugaoka Tokyo Chofu182 Japan

A mechanical actuator with a visco-elastic property is designed as an artificial muscle, and its dynamic properties are examined and compared with those of natural muscle. The properties are the length-tension relation, the tension response to sudden length change, and the load-velocity relation. The results show qualitatively good agreement with the dynamic properties of frog skeletal muscle, although the performance of the actuator must be improved. It is possible to give an actuator a visco-elasticitic property by properly combining some mechanical elements into a power source. This work is performed as the first step of the research aiming at a robotic system in which a compliant control is completed by controlling the visco-elasticity of the actuator itself © Fuji technology Press Ltd.

关键词： Mechanical actuators

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