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Informacje o czasopiśmie
Format
Czasopismo
eISSN
1178-5608
Pierwsze wydanie
01 Jan 2008
Częstotliwość wydawania
1 raz w roku
Języki
Angielski

Wyszukiwanie

Tom 2 (2009): Zeszyt 2 (January 2009)

Informacje o czasopiśmie
Format
Czasopismo
eISSN
1178-5608
Pierwsze wydanie
01 Jan 2008
Częstotliwość wydawania
1 raz w roku
Języki
Angielski

Wyszukiwanie

10 Artykułów
Otwarty dostęp

Control-Centric Simulator For Mechatronics Design Case Study: Gyroscopically Stabilized Single Wheel Robot

Data publikacji: 02 Nov 2017
Zakres stron: 190 - 199

Abstrakt

Abstract

A 3-Dimensional simulation platform developed as an aid for designing complex mechatronics system is presented in this paper. It uses ADAMS for simulation with animation of the dynamic behavior of the mechanism whose parts are drawn using a 3-D drawing software e.g., SolidWorks. The overall simulation platform integrates the 3-D simulator ADAMS with control design software MATLAB. This integration allows the designer to adopt a control-centric approach for designing complex mechanical structure to be used in a mechatronics system. Dynamic analysis of single wheel robot is used in this paper as an example to illustrate its uses. The simulating environment can easily be extended to any complex mechanical system simply by altering SolidWorks drawings

Index terms

  • Gyrobot
  • ADAMS
  • Single wheel robot
  • Dynamic simulation
Otwarty dostęp

An electrodynamic sensor for electrostatic charge measurement

Data publikacji: 02 Nov 2017
Zakres stron: 200 - 212

Abstrakt

Abstract

Electrodynamic sensors are used in the process industry because they are low cost and robust. Though frequently used very little fundamental work on them has been reported. This paper describes an investigation into characteristics of hemispherically and rectangularly shaped sensors. Two parameters are investigated, the effect of sensor area on sensitivity and the spatial filtering effect of the sensor due to its finite size. Models are proposed and results obtained using them compared with experimental values.

Index terms

  • Electrodynamic sensor
  • sensitivity
  • spatial filtering effect
  • pneumatic conveyors
  • process tomography
  • measurement
  • mass flow rate
Otwarty dostęp

Design And Fpga Implementation Of Nonlinearity Compensation Of Capacitive Pick-Off Mems Accelerometer For Satellite Launch Vehicles

Data publikacji: 02 Nov 2017
Zakres stron: 213 - 228

Abstrakt

Abstract

This paper presents the algorithm on the compensator design for eliminating the nonlinearity in the capacitive pick-off MEMS open-loop accelerometer and its implementation in the FPGA. A simple and elegant method is presented for the purpose. In the sensor model of compensator, upto 3rd order terms are taken. The first step approximation is derived using linear model. This approximation is improved over iterations to reduce the non-linearity. With this method, the inertial navigational grade performance is achieved. The algorithm is coded in VHDL, simulated, synthesized and implemented in the FPGA and tested. Test results matches closely with that of simulations. The VHDL design can be easily targeted into an ASIC to realize an integrated smart sensor.

Index terms

  • Accelerometer
  • Linearity
  • FPGA
  • error compensation
Otwarty dostęp

Extracting Electric Power From Human Body For Supplying Neural Recording System

Data publikacji: 02 Nov 2017
Zakres stron: 229 - 245

Abstrakt

Abstract

A powerful approach to the characterization of cellular electrical activity is electrical recording from cells or living tissues. The human central and / or peripheral nervous system has been a subject of study and fascination of the neuroscience and biomedical engineering communities for many decades. In this paper, we propose a new approach to feed implantable neural recording system, which based on extracting electrical power from human tissue warmth in order to supply a biomedical neural recording system. The major issue to overcome, in the design of a system that is aimed at being implant into the human body, is having a low power consumption, low noise circuit and small dimension to minimize tissue damage.

Index terms

  • Neural recording system
  • thermoelectric power generation
  • low power
  • neural amplifier
Otwarty dostęp

Application Of Self-Tuning Fuzzy Pid Controller On Industrial Hydraulic Actuator Using System Identification Approach

Data publikacji: 03 Nov 2017
Zakres stron: 246 - 261

Abstrakt

Abstract

In this paper, Self Tuning Fuzzy PID controller is developed to improve the performance of the electro-hydraulic actuator. The controller is designed based on the mathematical model of the system which is estimated by using System Identification technique. The model is performed in linear discrete model to obtain a discrete transfer function for the system. Model estimation procedures are done by using System Identification Toolbox in Matlab. Data for model estimation is taken from an experimental works. Fuzzy logic is used to tune each parameter of PID controller. Through simulation in Matlab by selecting appropriate fuzzy rules are designed to tune the parameters Kp, Ki and Kd of the PID controller, the performance of the hydraulic system has improved significantly compare to conventional PID controller.

Index terms

  • Identification
  • Hydraulic Actuator
  • Position Control
  • Self-Tuning
  • Fuzzy PID
Otwarty dostęp

Modeling And Measurement System For Magnetic Field Distributions In Biological Structures

Data publikacji: 03 Nov 2017
Zakres stron: 262 - 278

Abstrakt

Abstract

In this paper we develop a system for modeling and measurement of magnetic field distributions in biological structures caused by the externally applied electromagnetic field. We describe an effective and versatile approach for three-dimensional reconstruction of the field distributions from two-dimensional visualization the measured magnetic field data. The finite element model for magnetic field calculation is built. The magnetic fields of very thin slices of the 3D object are determined and visualized. Using these 2D images as slices of 3D image and based on the field theory and image processing techniques we developed a reconstruction approach for 3D visualization of magnetic field. This approach combines new technologies of 3D visualizations and characterizes with flexibility, simplicity and portability. The proposed approach was successfully applied for 3D reconstruction and visualization of magnetic field and current distributions in biological structures. The virtual microscope is developed for investigations of magnetic field distributions in biological structures during magnetic stimulation. Anisotropic Magneto-Resistive (AMR) sensors are applied for magnetic field measurements. AMR sensors are combined in array probes in order to increase productivity of measurement process and improving the performance of probes.

Index terms

  • Magnetic field modeling
  • Finite element method
  • Image reconstruction
  • Magnetic field
  • Visualization.
  • AMR sensors array
  • Magnetic field measurement
Otwarty dostęp

A Simple And Countable Method For The Assessment Of Perceived Well-Being Among Elderly People

Data publikacji: 03 Nov 2017
Zakres stron: 279 - 292

Abstrakt

Abstract

This report illustrates the technical design for the monitoring system of wellbeing and demonstrates its feasibility in elderly people. The Con-Dis device consists of three buttons with a happy, neutral or unhappy face, each describing the mood of the patient. The functionality of the device was tested on 5 test persons who were asked to demonstrate their state of well-being by pressing one of the three buttons representing present condition three times per day for a time period of one week (5 working days). The device is based on Atmel’s 8-bit AVR microcontroller, ATMEGA 128, placed on an AVR-MT-128 development board. The software used by the ATMEGA microcontroller was developed using the C language in the AVRStudio development environment. On the basis of the collected results, the Con-Dis - device functioned reliably in monitoring the perceived wellbeing and mood of the test persons.

Index terms

  • perceived well-being
  • monitoring system
  • microcontroller
Otwarty dostęp

Using Capacitive Sensing To Determine The Moisture Content Of Wood Pellets – Investigations And Application

Data publikacji: 03 Nov 2017
Zakres stron: 293 - 308

Abstrakt

Abstract

This paper discusses a measurement principle for online moisture determination of wood pellets that is based on capacitive sensing. To ensure reliability and proper operation of the sensing device even under harsh industrial conditions, a robust principle based on a frequency hopping approach is required. Therefore, we investigate the impact of multiple carrier frequencies and analyze the frequency dependency of the material permittivity. Two different electrode topologies, one based on parallel plates and the other on a planar structure, are tested using a laboratory prototype in a drying chamber. Investigations on the applicability of capacitive moisture measurement are carried out using stationary conditions. The non-invasive and in-situ moisture content determination of wood pellets in a screw conveyor is presented as an application of the proposed principle.

Index terms

  • Capacitive sensing
  • moisture content
  • wood pellets
  • screw conveyor
Otwarty dostęp

A Novel Integrated Wireless Sensor Network Architecture For Disaster Prevention

Data publikacji: 17 Jan 2018
Zakres stron: 309 - 328

Abstrakt

Abstract

There has been growing interest in the application of Wireless Sensor Networks (WSN) in the field of disaster prevention. In such applications, sensor nodes are randomly deployed in an area of interest, a large number of exactly same wireless sensor nodes form a robust mesh network to prevent damages in case of a disaster. In many applications, however, deploying sophisticated sensors on every sensor nodes is unnecessary and very costly. For example, in case of Earthquake one seismographic sensor in an area of a few square kilometers is good enough. Other nodes would then disseminate the sensed information to relevant locations. The main contribution of this work is to propose a WSN architecture and communication protocol for integrated disaster control, when heterogeneous sensor nodes collect relevant information from different locations of the entire WSN and transfer selectively to respective control locations where they could be used for proper disaster prevention. We have actually designed WSN based Disaster Prevention Power Control (DPPC) System which could successfully disseminate alarm signal, and control AC power to facilitate disaster protection. In addition, line interface technique has been developed to interface sensor nodes with physical devices

Słowa kluczowe

  • Wireless Sensor Network (WSN)
  • Disaster Prevention Power Control (DPPC)
  • Real-time Emergency Earthquake Reception System (EERS)
  • Power Control Device (PCD)
  • A/D (Analog to Digital) conversion
Otwarty dostęp

Portable Automatic Conjecturing and Announcing System for RealTime Accident Detection

Data publikacji: 03 Nov 2017
Zakres stron: 329 - 344

Abstrakt

Abstract

In this paper, we propose the portable automatic conjecturing and announcing system for real-time accident detection. There are six sensors with 3-axis accelerometers and the ZigBee transmission standard mounted on the patients’ specific region. After being transmitted to the mobile device through the ZigBee devices, the data are analyzed immediately. When the accident occurs, the mobile device could get the user’s location with Assisted Global Positioning System (AGPS) and transmit the information of accident to the medical staff through the 3rd-generation (3G) network. The medical staff will make a careful check of this accident with the patient again. In order to improve the limit of Regional Health Network (RHN), the environment constraints, the mobile computing capability, the power consumption and the device portability are considered in this system architecture we proposed.

Index terms

  • ZigBee
  • 3-axis accelerometers
  • Accident Detection
10 Artykułów
Otwarty dostęp

Control-Centric Simulator For Mechatronics Design Case Study: Gyroscopically Stabilized Single Wheel Robot

Data publikacji: 02 Nov 2017
Zakres stron: 190 - 199

Abstrakt

Abstract

A 3-Dimensional simulation platform developed as an aid for designing complex mechatronics system is presented in this paper. It uses ADAMS for simulation with animation of the dynamic behavior of the mechanism whose parts are drawn using a 3-D drawing software e.g., SolidWorks. The overall simulation platform integrates the 3-D simulator ADAMS with control design software MATLAB. This integration allows the designer to adopt a control-centric approach for designing complex mechanical structure to be used in a mechatronics system. Dynamic analysis of single wheel robot is used in this paper as an example to illustrate its uses. The simulating environment can easily be extended to any complex mechanical system simply by altering SolidWorks drawings

Index terms

  • Gyrobot
  • ADAMS
  • Single wheel robot
  • Dynamic simulation
Otwarty dostęp

An electrodynamic sensor for electrostatic charge measurement

Data publikacji: 02 Nov 2017
Zakres stron: 200 - 212

Abstrakt

Abstract

Electrodynamic sensors are used in the process industry because they are low cost and robust. Though frequently used very little fundamental work on them has been reported. This paper describes an investigation into characteristics of hemispherically and rectangularly shaped sensors. Two parameters are investigated, the effect of sensor area on sensitivity and the spatial filtering effect of the sensor due to its finite size. Models are proposed and results obtained using them compared with experimental values.

Index terms

  • Electrodynamic sensor
  • sensitivity
  • spatial filtering effect
  • pneumatic conveyors
  • process tomography
  • measurement
  • mass flow rate
Otwarty dostęp

Design And Fpga Implementation Of Nonlinearity Compensation Of Capacitive Pick-Off Mems Accelerometer For Satellite Launch Vehicles

Data publikacji: 02 Nov 2017
Zakres stron: 213 - 228

Abstrakt

Abstract

This paper presents the algorithm on the compensator design for eliminating the nonlinearity in the capacitive pick-off MEMS open-loop accelerometer and its implementation in the FPGA. A simple and elegant method is presented for the purpose. In the sensor model of compensator, upto 3rd order terms are taken. The first step approximation is derived using linear model. This approximation is improved over iterations to reduce the non-linearity. With this method, the inertial navigational grade performance is achieved. The algorithm is coded in VHDL, simulated, synthesized and implemented in the FPGA and tested. Test results matches closely with that of simulations. The VHDL design can be easily targeted into an ASIC to realize an integrated smart sensor.

Index terms

  • Accelerometer
  • Linearity
  • FPGA
  • error compensation
Otwarty dostęp

Extracting Electric Power From Human Body For Supplying Neural Recording System

Data publikacji: 02 Nov 2017
Zakres stron: 229 - 245

Abstrakt

Abstract

A powerful approach to the characterization of cellular electrical activity is electrical recording from cells or living tissues. The human central and / or peripheral nervous system has been a subject of study and fascination of the neuroscience and biomedical engineering communities for many decades. In this paper, we propose a new approach to feed implantable neural recording system, which based on extracting electrical power from human tissue warmth in order to supply a biomedical neural recording system. The major issue to overcome, in the design of a system that is aimed at being implant into the human body, is having a low power consumption, low noise circuit and small dimension to minimize tissue damage.

Index terms

  • Neural recording system
  • thermoelectric power generation
  • low power
  • neural amplifier
Otwarty dostęp

Application Of Self-Tuning Fuzzy Pid Controller On Industrial Hydraulic Actuator Using System Identification Approach

Data publikacji: 03 Nov 2017
Zakres stron: 246 - 261

Abstrakt

Abstract

In this paper, Self Tuning Fuzzy PID controller is developed to improve the performance of the electro-hydraulic actuator. The controller is designed based on the mathematical model of the system which is estimated by using System Identification technique. The model is performed in linear discrete model to obtain a discrete transfer function for the system. Model estimation procedures are done by using System Identification Toolbox in Matlab. Data for model estimation is taken from an experimental works. Fuzzy logic is used to tune each parameter of PID controller. Through simulation in Matlab by selecting appropriate fuzzy rules are designed to tune the parameters Kp, Ki and Kd of the PID controller, the performance of the hydraulic system has improved significantly compare to conventional PID controller.

Index terms

  • Identification
  • Hydraulic Actuator
  • Position Control
  • Self-Tuning
  • Fuzzy PID
Otwarty dostęp

Modeling And Measurement System For Magnetic Field Distributions In Biological Structures

Data publikacji: 03 Nov 2017
Zakres stron: 262 - 278

Abstrakt

Abstract

In this paper we develop a system for modeling and measurement of magnetic field distributions in biological structures caused by the externally applied electromagnetic field. We describe an effective and versatile approach for three-dimensional reconstruction of the field distributions from two-dimensional visualization the measured magnetic field data. The finite element model for magnetic field calculation is built. The magnetic fields of very thin slices of the 3D object are determined and visualized. Using these 2D images as slices of 3D image and based on the field theory and image processing techniques we developed a reconstruction approach for 3D visualization of magnetic field. This approach combines new technologies of 3D visualizations and characterizes with flexibility, simplicity and portability. The proposed approach was successfully applied for 3D reconstruction and visualization of magnetic field and current distributions in biological structures. The virtual microscope is developed for investigations of magnetic field distributions in biological structures during magnetic stimulation. Anisotropic Magneto-Resistive (AMR) sensors are applied for magnetic field measurements. AMR sensors are combined in array probes in order to increase productivity of measurement process and improving the performance of probes.

Index terms

  • Magnetic field modeling
  • Finite element method
  • Image reconstruction
  • Magnetic field
  • Visualization.
  • AMR sensors array
  • Magnetic field measurement
Otwarty dostęp

A Simple And Countable Method For The Assessment Of Perceived Well-Being Among Elderly People

Data publikacji: 03 Nov 2017
Zakres stron: 279 - 292

Abstrakt

Abstract

This report illustrates the technical design for the monitoring system of wellbeing and demonstrates its feasibility in elderly people. The Con-Dis device consists of three buttons with a happy, neutral or unhappy face, each describing the mood of the patient. The functionality of the device was tested on 5 test persons who were asked to demonstrate their state of well-being by pressing one of the three buttons representing present condition three times per day for a time period of one week (5 working days). The device is based on Atmel’s 8-bit AVR microcontroller, ATMEGA 128, placed on an AVR-MT-128 development board. The software used by the ATMEGA microcontroller was developed using the C language in the AVRStudio development environment. On the basis of the collected results, the Con-Dis - device functioned reliably in monitoring the perceived wellbeing and mood of the test persons.

Index terms

  • perceived well-being
  • monitoring system
  • microcontroller
Otwarty dostęp

Using Capacitive Sensing To Determine The Moisture Content Of Wood Pellets – Investigations And Application

Data publikacji: 03 Nov 2017
Zakres stron: 293 - 308

Abstrakt

Abstract

This paper discusses a measurement principle for online moisture determination of wood pellets that is based on capacitive sensing. To ensure reliability and proper operation of the sensing device even under harsh industrial conditions, a robust principle based on a frequency hopping approach is required. Therefore, we investigate the impact of multiple carrier frequencies and analyze the frequency dependency of the material permittivity. Two different electrode topologies, one based on parallel plates and the other on a planar structure, are tested using a laboratory prototype in a drying chamber. Investigations on the applicability of capacitive moisture measurement are carried out using stationary conditions. The non-invasive and in-situ moisture content determination of wood pellets in a screw conveyor is presented as an application of the proposed principle.

Index terms

  • Capacitive sensing
  • moisture content
  • wood pellets
  • screw conveyor
Otwarty dostęp

A Novel Integrated Wireless Sensor Network Architecture For Disaster Prevention

Data publikacji: 17 Jan 2018
Zakres stron: 309 - 328

Abstrakt

Abstract

There has been growing interest in the application of Wireless Sensor Networks (WSN) in the field of disaster prevention. In such applications, sensor nodes are randomly deployed in an area of interest, a large number of exactly same wireless sensor nodes form a robust mesh network to prevent damages in case of a disaster. In many applications, however, deploying sophisticated sensors on every sensor nodes is unnecessary and very costly. For example, in case of Earthquake one seismographic sensor in an area of a few square kilometers is good enough. Other nodes would then disseminate the sensed information to relevant locations. The main contribution of this work is to propose a WSN architecture and communication protocol for integrated disaster control, when heterogeneous sensor nodes collect relevant information from different locations of the entire WSN and transfer selectively to respective control locations where they could be used for proper disaster prevention. We have actually designed WSN based Disaster Prevention Power Control (DPPC) System which could successfully disseminate alarm signal, and control AC power to facilitate disaster protection. In addition, line interface technique has been developed to interface sensor nodes with physical devices

Słowa kluczowe

  • Wireless Sensor Network (WSN)
  • Disaster Prevention Power Control (DPPC)
  • Real-time Emergency Earthquake Reception System (EERS)
  • Power Control Device (PCD)
  • A/D (Analog to Digital) conversion
Otwarty dostęp

Portable Automatic Conjecturing and Announcing System for RealTime Accident Detection

Data publikacji: 03 Nov 2017
Zakres stron: 329 - 344

Abstrakt

Abstract

In this paper, we propose the portable automatic conjecturing and announcing system for real-time accident detection. There are six sensors with 3-axis accelerometers and the ZigBee transmission standard mounted on the patients’ specific region. After being transmitted to the mobile device through the ZigBee devices, the data are analyzed immediately. When the accident occurs, the mobile device could get the user’s location with Assisted Global Positioning System (AGPS) and transmit the information of accident to the medical staff through the 3rd-generation (3G) network. The medical staff will make a careful check of this accident with the patient again. In order to improve the limit of Regional Health Network (RHN), the environment constraints, the mobile computing capability, the power consumption and the device portability are considered in this system architecture we proposed.

Index terms

  • ZigBee
  • 3-axis accelerometers
  • Accident Detection

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