Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1979-08-01
1982-08-10
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324128, 324158R, G01R 3100, G01R 138
Patent
active
043440320
ABSTRACT:
A method and device for testing inductive pulse generators of the type used as wheel-rpm feedback transducers in anti-wheel-lock action in automotive braking systems. Within a portion of the range of frequencies at which such inductive pulse generator produces output voltage pulses, the amplitude and frequency of such pulses vary approximately in proportion to each other. In accordance with the present invention, a quality characterization signal is derived which varies similarly to the ratio of pulse amplitude and pulse frequency. Thus, within such frequency range, or equivalently within the corresponding range of wheel rotation speed in the context specified above, the value of the quality characterization signal will be independent of the frequency or wheel rpm at which the test happens to be performed.
REFERENCES:
patent: 3449672 (1969-06-01), Thomas
Karlsen Ernest F.
Robert & Bosch GmbH
Striker Michael J.
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