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Instrumentation & Measurement Magazine, IEEE

Issue 5 • Date October 2007

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Displaying Results 1 - 18 of 18
  • Front cover - IEEE Instrumentation & Measurement Magazine - Oct. 2007

    Publication Year: 2007 , Page(s): c1
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    Freely Available from IEEE
  • Table of contents - Vol 10 No 5

    Publication Year: 2007 , Page(s): 2
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  • This one is for the students... [From the Editors' Bench]

    Publication Year: 2007 , Page(s): 4
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  • A Brief Note of Introduction

    Publication Year: 2007 , Page(s): 6
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  • Spring 2007 Technical Committee Reports [TC News]

    Publication Year: 2007 , Page(s): 7 - 9
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  • Instrumentation and Measurement of a Power Distribution System Laboratory for Meter Placement and Network Reconfiguration Studies

    Publication Year: 2007 , Page(s): 10 - 19
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1742 KB) |  | HTML iconHTML  

    The monitoring and automation of power distribution systems has significantly improved with advancements in digital signal processing (DSP) and in computer and Web-based technologies. Power distribution systems could realize benefits from an improved instrumentation and measurement (I&M) configuration for network reconfiguration and meter placement. Drexel University has developed the Reconfigurable Distribution Automation And Control (RDAC) laboratory; it has a power distribution system in which various meter placements and network reconfiguration techniques can be implemented and studied. The authors designed a unique and flexible I&M system consisting of software and hardware instruments to perform network reconfiguration and meter placement studies; it can adapt to power system planning and operating scenarios. This system in the RDAC laboratory is tested and present the results in this paper. View full abstract»

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  • Compensation of Temperature-Drift Errors with No Additional Hardware

    Publication Year: 2007 , Page(s): 20 - 25
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1087 KB) |  | HTML iconHTML  

    A new approach that does not require additional hardware for temperature-drift compensation is reviewed. The efficiency of the new approach depends on the repeatability of the input transducer temperature-dependent transfer characteristics. A simple polynomial approximation of the measurand model was used in the application example. To bring the temperature-compensation efficiency to the level limited by the repeatability of the transfer characteristics of the input transducer, advanced fitting methods can be used. View full abstract»

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  • Determination of Thickness and Dielectric Constant of Coatings from Capacitance Measurements

    Publication Year: 2007 , Page(s): 26 - 31
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (851 KB) |  | HTML iconHTML  

    In this work, we deal only with the case of a uniform dielectric film on top of a flat conductor. Our goal is to demonstrate the possibility to measure the thickness and dielectric constant of the dielectric coating by capacitance measurements in a nondestructive way and to estimate the resolution of this technique. View full abstract»

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  • Identifying the Structure of Nonlinear Perturbations in Mixers using Multisine Signals

    Publication Year: 2007 , Page(s): 32 - 39
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1109 KB) |  | HTML iconHTML  

    The objective of this paper is to identify the position of the nonlinearity, a custom designed multisine signal that can be used to excite the signal path of the mixer. This special random-phase multisine signal with a random harmonic grid contains several carefully selected spectral lines that are left unexcited. These "holes" in the spectrum of the signal act as detectors for the presence and the location of the nonlinearities that deviate from the ideal. First the proposed detection algorithm was tested in a simulation to show that it can work in an ideally controlled environment. Afterwards, measurements are performed on a real mixer excited with a special odd random-phase multisine with a two-port large signal network analyzer (LSNA) and detect the position of the unwanted nonlinearities in the device model. View full abstract»

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  • A Tour of the Tour of the Hilbert-Huang Transform: An Empirical Tool for Signal Analysis

    Publication Year: 2007 , Page(s): 40 - 45
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (897 KB) |  | HTML iconHTML  

    The HHT provides an alternative tool for signal analysis. Case studies in applying the HHT technique for bearing degradation monitoring and machine tool breakage detection have demonstrated its effectiveness for revealing the non-stationary and non-linear features hidden in dynamic signals. In addition to the application illustrated in this article, the HHT technique has shown to be effective in other applications, such as biomedical engineering [8], [9], system identification [10], [11], environmental monitoring [12], or financial analysis [13]. Because of its empirical nature, rigorous mathematical proof of this technique has remained an active research topic. More interesting reports are to be expected on the application of this technique for solving various types of real-world problems. View full abstract»

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  • Robots with Sensitive Feet

    Publication Year: 2007 , Page(s): 46 - 53
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1746 KB) |  | HTML iconHTML  

    Research has shown that human balance control is dependant on force feedback provided by pressure sensed by the human sole. Consequently, for the vital functions of walking and standing on our legs, our sensitive feet play a very prominent role. However, biped robots have rarely been provided with sensing in the soles of their feet, except for a few cases where the forces at two or three points are measured. We have built a pilot system to measure foot-sole pressure for a robot's feet during walking. It uses resistive force sensor arrays to help create pressure maps of the sole. View full abstract»

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  • 802.11, It's Out There for Free ... If You Know Where To Look [My Favorite Experiment]

    Publication Year: 2007 , Page(s): 54 - 57
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (420 KB) |  | HTML iconHTML  

    Free wireless Internet. It seems to be everywhere: hotels, cafes, airports, and even on the in-town street lights in my city. Free internet access ports are all around us, yet you, like me, probably pay to bring it into our home. Each month we shell out money for dial-up, digital subscriber line (DSL), or cable-based Internet service when all that most of us really need to do is to sign up for a free e-mail account and construct a simple high-gain antenna. View full abstract»

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  • Universal Magnetic Circuit for Resolvers with Different Speed Ratios [Instrumentation Notes]

    Publication Year: 2007 , Page(s): 58 - 68
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1927 KB) |  | HTML iconHTML  

    This paper proposes a universal magnetic circuit for resolvers with different speed ratios. A resolver is an electromechanical transducer that converts the angular position of a rotor into an electric signal. The analysis and test results led to the conclusion that by using an appropriate magnetic material and assuring high-precision manufacturing it is possible to obtain high-precision resolvers with electrical error well below 1 minute of arc. Also it was proved that by using a single type of magnetic circuit it is possible to create multipole, two-speed resolvers. This system is used to improve both accuracy and resolution of angle measurement. View full abstract»

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  • Call for Papers - AUTOTESTCON 2008

    Publication Year: 2007 , Page(s): 69
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  • New products

    Publication Year: 2007 , Page(s): 70 - 75
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  • I/sup 2/MTC - International Instrumentation & Measurement Technology Conference - Call for Papers

    Publication Year: 2007 , Page(s): 76 - 77
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    Freely Available from IEEE
  • Instrumentation and Measurement Society Student Paper Contests [Membership Notes]

    Publication Year: 2007 , Page(s): 78
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    Freely Available from IEEE
  • Calendar [2007-2008]

    Publication Year: 2007 , Page(s): 79 - 82
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    Freely Available from IEEE

Aims & Scope

IEEE Instrumentation and Measurement Magazine contains applications-oriented and tutorial articles on topics in the broadly based areas of instrumentation system design and measurement techniques.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Prof. Wendy Van Moer

wendy.w.vanmoer@ieee.org
IandMMagazineEIC@ieee.org