- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 61 to 70 of 182 (0.013 seconds)| 61 |
Digital Instrumentation for Power MeasurementNg, K. W. January 1977 (has links)
No description available.
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| 62 |
Some calibration policies for instruments with autocorrelated measurement errorsPepper, M. P. G. January 1972 (has links)
No description available.
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| 63 |
The Analysis of Error Variance in Cross-Correlation Flow Measurement DevicesGray, D. F. January 1978 (has links)
No description available.
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| 64 |
Electric current measurement in power systems using optical fibre techniquesYakum, Charles Nchonko January 1996 (has links)
No description available.
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| 65 |
An integrated wide bandwidth ultrasonic signal acquisition instrumentWilkinson, Gordon Peter January 1993 (has links)
A wideband digital signal acquisition instrument intended primarily for ultrasonic experimentation has been designed and built. It comprises an integrated array of modules which combine to provide: a pulser for transducer excitation, wideband amplification (>80 MHz bandwidth), high speed sampling (>160 MHz), on-board memory (4K x 16 bits capacity), control hardware and real-time coherent averaging. The integration of the modules offers significant benefits over systems consisting of a number of separate items of equipment. The major benefit is a reduction in acquisition time which is accomplished as follows. The time relationship between the sampling clock and the input signal is controlled to minimise the signal repetitions required for interleaving. This is achieved by triggering the input signal using a pulser board locked to the sample clock. In addition, signal averaging is implemented in hardware using two memory modules and an adder module. Since the time relationship between the sampling clock and the input signal is controlled it cannot be tested using a sinewave because it is not possible to produce a sinewave which is correlated with the sampling clock. Instead, a rectangular pulse, triggered by the instrument, is applied to a single-pole low pass filter to provide the test signal. The time constant and start time is ascertained and used to reproduce the single-pole response. The reproduced response is then compared to the sampled signal to produce an error plot from which the system's linearity and effective bits can be deduced. As the system was designed for fast acquisition, and hence has a short aperture time, it is highly applicable to dynamic processes. The dynamic process application chosen was the measurement of absorption and velocity on rapidly flocculating and sedimenting colloids.
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| 66 |
Ultra stable voltage sourcesRoberts, Derek E. January 1988 (has links)
No description available.
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| 67 |
A mark to period encoded sensor systemDrinali, M. January 1987 (has links)
No description available.
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| 68 |
In-situ viscosity measurementChan, Paul Wing Hung January 2001 (has links)
No description available.
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| 69 |
Instrumentation techniques for high speed mechanismRezaie, A. H. January 1988 (has links)
No description available.
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| 70 |
An evaluation of recent development in the Taguchi gas sensorsEkukinam, U. B. January 1982 (has links)
No description available.
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