US3668524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic circuit for detecting and evaluating angular acceleration and deceleration of a rotary member
Assignee: Ford Motor Co
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Filing: 1970-01-19
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Granted: 1972-06-06
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Expires: 1990-01-19
Abstract
Abstract An electronic circuit for developing a voltage signal that is proportional in magnitude to the acceleration or deceleration of a rotary member, including a speed pick-up signal generator connected to the rotary member and having an output signal in the form of voltage pulses, a plurality of voltage storage counters, each being connected to an output signal amplifier circuit, a separate electronic gate for controlling the entry of a triggering voltage signal to each of said storage counters and a multi-vibrator switching circuit connecting the input side of each gate with the output side of said speed pick-up whereby the signal generated by said speed pick-up is selectively distributed to the gates to allow each storage counter to develop an output signal voltage that is determined by the number of pulses generated by said pick-up within a predetermined interval, the differences in voltages stored by each counter thereby being a measure of the change in velocity of said rotary member during operation in one interval relative to the speed of the rotary member during operation in another interval.
Inventors
- 👤 James I Berry
- 👤 Zbigniew J Jania
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:56
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/171; G; G01; G01P; G01P15/00; G01P15/16; G01P15/165
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
478 words
An angular accelerometer adapted to measure the angular acceleration of a rotary member comprising a velocity pick-up means for developing voltage pulses having a frequency that is proportional in magnitude to the rotary speed of said member, an astable multivibrator circuit means for developing voltage pulses at each of two output sides thereof, a bistable vibrator circuit means for developing in alternating sequence two additional voltage pulses, two electrical gates each having two input terminals and one output terminal, a separate one of the output sides of said astable multivibrator circuit means being connected to one input terminal of each of said gates, four additional gates, each having a pair of input terminals and a single output terminal, one input terminal of each of a first pair of said four additional gates being connected to the output side of one of said first mentioned gates, a second pair of said four additional gates having an input terminal connected to the output terminal of the other of said first mentioned gates, a first output side of said bistable multivibrator circuit means being connected to one terminal of one of said first pair of gates and to one terminal of said second pair of gates and the second side thereof being connected to one terminal of one of the other of said one pair of gates and to one terminal of one of the other of said other pair of gates, four storage voltage counters, a separate one of a first pair of said counters being connected to the output terminal of each of said first pair of said four additional gates, a separate one of a second pair of said counters being connected to the output terminal of each of said second pair of said four additional gates, one storage counter of each of said pair of storage counters being connected through their respective gates to a first output side of said bistable multivibrator circuit means whereby they accumulate voltage charges when a signal is available from said bistable multivibrator circuit means, the second output side of said bistable multivibrator circuit means being connected to the other of each of said pairs of storage counters through their respective gates, said counters accumulating voltage charges when a signal is available from said bistable multivibrator circuit means, means for comparing the voltage charges accumulated by a storage counter of said first pair of storage counters and by a storage counter of said second pair of storage counters during one-half of the complete period of the oscillation of said astable multivibrator circuit means and means for comparing the accumulated voltages in the other storage counters of each pair during the other half of the period of vibration of said astable multivibrator circuit means whereby the average voltage differential so compared indicates the change in speed of said driven member during one interval.
Claim 2
Dependent Claim
478 words
An angular accelerometer adapted to measure the angular acceleration of a rotary member comprising a velocity pick-up means for developing voltage pulses having a frequency that is proportional in magnitude to the rotary speed of said member, an astable multivibrator circuit means for developing voltage pulses at each of two output sides thereof, a bistable vibrator circuit means for developing in alternating sequence two additional voltage pulses, two electrical gates each having two input terminals and one output terminal, a separate one of the output sides of said astable multivibrator circuit means being connected to one input terminal of each of said gates, four additional gates, each having a pair of input terminals and a single output terminal, one input terminal of each of a first pair of said four additional gates being connected to the output side of one of said first mentioned gates, a second pair of said four additional gates having an input terminal connected to the output terminal of the other of said first mentioned gates, a first output side of said bistable multivibrator circuit means being connected to one terminal of one of said first pair of gates and to one terminal of said second pair of gates and the second side thereof being connected to one terminal of one of the other of said one pair of gates and to one terminal of one of the other of said other pair of gates, four storage voltage counters, a separate one of a first pair of said counters being connected to the output terminal of each of said first pair of said four additional gates, a separate one of a second pair of said counters being connected to the output terminal of each of said second pair of said four additional gates, one storage counter of each of said pair of storage counters being connected through their respective gates to a first output side of said bistable multivibrator circuit means whereby they accumulate voltage charges when a signal is available from said bistable multivibrator circuit means, the second output side of said bistable multivibrator circuit means being connected to the other of each of said pairs of storage counters through their respective gates, said counters accumulating voltage charges when a signal is available from said bistable multivibrator circuit means, means for comparing the voltage charges accumulated by a storage counter of said first pair of storage counters and by a storage counter of said second pair of storage counters during one-half of the complete period of the oscillation of said astable multivibrator circuit means and means for comparing the accumulated voltages in the other storage counters of each pair during the other half of the period of vibration of said astable multivibrator circuit means whereby the average voltage differential so compared indicates the change in speed of said driven member during one interval.
Claim 3
Dependent Claim
54 words
The combination as set forth in claim 1 wherein each of said gates establishes a voltage pulse distribution circuit therethrough when the voltage pulse applied to its other input terminal is present, said distribution circuit being interrupted by said gate in response to a loss of the voltage pulse on said other input terminal.
Claim 4
Dependent Claim
77 words
The combination as set forth in claim 1 wherein said means for comparing the accumulated voltages in said storage counters comprises an output amplifier circuit having two input terminals and one output terminal, each of the input terminals being connected to a separate pair of storage counters whereby the output terminal is subjected to a voltage potential that is proportional to the difference in the voltage potentials supplied to the input terminals of the output amplifier circuit.
Claim 5
Dependent Claim
76 words
The combination as set forth in claim 2 wherein said means for comparing the accumulated voltages in said storage counters comprises an output amplifier circuit having two input terminals and one output terminal, each of the input terminals being connected to a separate pair storage counter whereby the output terminal is subjected to a voltage potential that is proportional to the difference in the voltage potentials supplied to the input terminals of the output amplifier circuit.
Claim 6
Dependent Claim
81 words
The combination as set forth in claim 1 wherein each storage counter comprises a storage capacitor, a charge dissipating circuit bypassing said capacitor, said bypass circuit being connected to the gate terminal associated with said storage counter that is subjected to a voltage of known frequency, the negative bias produced on said bypass circuit being dissipated when said storage counter registers its output signal, thereby conditioning said storage capacitor for a voltage accumulation mode as the voltage storing cycle is repeated.
Claim 7
Dependent Claim
81 words
The combination as set forth in claim 2 wherein each storage counter comprises a storage capacitor, a charge dissipating circuit bypassing said capacitor, said bypass circuit being connected to the gate terminal associated with said storage counter that is subjected to a voltage of known frequency, the negative bias produced on said bypass circuit being dissipated when said storage counter registers its output signal, thereby conditioning said storage capacitor for a voltage accumulation mode as the voltage storing cycle is repeated.
Claim 8
Dependent Claim
70 words
The combination as set forth in claim 3 wherein the bistable multivibrator circuit means has a single input which triggers a voltage impulse at each output side thereof in alternating sequence, said input side being connected to one of the output terminals of said first-mentioned multivibrator circuit means whereby the oscillating frequency of said bistable multivibrator circuit means is one-half of the vibrating frequency of said first-mentioned multivibrator circuit means.
Claim 9
Dependent Claim
70 words
The combination as set forth in claim 4 wherein the bistable multivibrator circuit means has a single input which triggers a voltage impulse at each output side thereof in alternating sequence, said input side being connected to one of the output terminals of said first-mentioned multivibrator circuit means whereby the oscillating frequency of said bistable multivibrator circuit means in one-half of the vibrating frequency of said first-mentioned multivibrator circuit means.
References Cited (Backward Citations)
GB960999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |