Device for utilization in anti-skid control systems
First Claim
1. A device for converting the rate of a pulse train which is proportional to the rotational velocity of a vehicle wheel into a binary number for use in a digital computer for anti-skid control systems including:
- a comparator;
means for supplying said pulse train to said comparator;
means coupling the output of said comparator to the input of a storage register which cumulatively adds said pulse train to the contents of said storage register, taking into account the sign of the output signal of said comparator;
a controllable frequency pulse generator coupled to said storage register to be controlled by the contents of said storage register for producing a comparison pulse train;
means coupling said frequency generator to an input of said comparator whereby said comparator is adapted to provide the difference between the frequency of said two pulse trains in the form of a binary number, said binary number being supplied to said storage register whereby the contents of said storage register represent the binary number corresponding to said frequency; and
a clock pulse generator for controlling said comparator and said storage register.
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Abstract
This invention discloses a device for converting the rate of a pulse train which is proportional to the velocity of a vehicle wheel into a binary number for use in a digital computer for anti-skid control systems wherein the pulse train is supplied to a comparator, the output of the comparator being coupled to the input of a storage register which cumulatively adds to its contents, taking due consideration of the sign of the input. A frequency generator which is controlled by the contents of the storage register, with the comparison pulse train produced by the generator being supplied to the comparator and an adapter being added to establish a difference between the frequencies of the two pulse trains in the form of a binary number, which binary number is supplied to said register so that the content of said register represents the binary number corresponding to the frequency. The comparator and the register are both controlled by a clock pulse generator.
7 Citations
10 Claims
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1. A device for converting the rate of a pulse train which is proportional to the rotational velocity of a vehicle wheel into a binary number for use in a digital computer for anti-skid control systems including:
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a comparator; means for supplying said pulse train to said comparator; means coupling the output of said comparator to the input of a storage register which cumulatively adds said pulse train to the contents of said storage register, taking into account the sign of the output signal of said comparator; a controllable frequency pulse generator coupled to said storage register to be controlled by the contents of said storage register for producing a comparison pulse train; means coupling said frequency generator to an input of said comparator whereby said comparator is adapted to provide the difference between the frequency of said two pulse trains in the form of a binary number, said binary number being supplied to said storage register whereby the contents of said storage register represent the binary number corresponding to said frequency; and a clock pulse generator for controlling said comparator and said storage register. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification