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Apparatus and method for testing of a rotary movement-electrical signal transducer system

  • US 4,428,224 A
  • Filed: 07/14/1980
  • Issued: 01/31/1984
  • Est. Priority Date: 03/23/1979
  • Status: Expired due to Term
First Claim
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1. A method for testing a rotary movement-electrical signal transducer system of the type generating a series of signals during operation thereof, comprising the steps of:

  • receiving said signals;

    measuring the time of each of said signals to establish the periods therefor;

    comparing said periods to determine a maximum period and a minimum period thereof;

    determining an average period for said periods;

    comparing said average period to said minimum period and said maximum period to provide a first evaluation interval and a second evaluation interval, respectively;

    generating a reference interval;

    comparing said reference interval to said first evaluation interval and said second evaluation interval; and

    generating a postive test signal whenever said first evaluation interval and said second evaluation interval are less than said reference interval.

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