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US3649871A
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Method of and apparatus for measuring angular acceleration
Assignee: Continental Teves AG and Co OHG
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Filing: 1970-02-17
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Granted: 1972-03-14
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Expires: 1990-02-17
Abstract
Abstract A disk formed with peripheral notches or magnetic regions forms the input of an acceleration-measuring device. As the disk turns these notches or magnetic regions are scanned by a pickup coil, thereby producing a pulse train for which a pulse shaper ensures pulses of equal duration and amplitude, the frequency being proportional to angular velocity. The signal is then averaged. The average is integrated in two consecutive equal time periods and the difference of the two resulting integrals is obtained by an algebraically operating summing amplifier, the difference being equal to the angular acceleration.
Inventors
- 👤 Hans-Christof Klein
- 👤 Gunther Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:14
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/16; G01P15/165; B; B60; B60T; B60T8/00; B60T8/17; B60T8/172
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A method of operating an acceleration-responsive device in accordance with the angular acceleration of a rotating body, comprising the steps of: generating a pulse train of pulses of substantially equal amplitude and duration and having a frequency proportional to the angular velocity of said body; integrating said pulse train during two substantially consecutive equal time periods to form two integrals; and differentially combining said integrals to produce an output capable of operating said device and proportional to said angular acceleration.
Claim 2
Independent Claim
80 words
A method of operating an acceleration-responsive device in accordance with the angular acceleration of a rotating body, comprising the steps of: generating a pulse train of pulses of substantially equal amplitude and duration and having a frequency proportional to the angular velocity of said body; integrating said pulse train during two substantially consecutive equal time periods to form two integrals; and differentially combining said integrals to produce an output capable of operating said device and proportional to said angular acceleration.
Claim 3
Dependent Claim
34 words
The method defined in claim 1 further comprising the step of averaging said pulse train to form a substantially continuous signal having an amplitude variable in proportion to the frequency of said pulse train.
Claim 4
Independent Claim
111 words
A system for operating an acceleration-responsive device in accordance with the angular acceleration of a rotating body, said system comprising: signal-generator means associated with said body for producing a pulse train of a frequency proportional to the angular velocity of said body; smoothing the shaped pulse train and thereby producing a substantially continuous signal having an amplitude variable in proportion to the frequency of said pulse train; means for integrating the smoothed pulse train during two substantially consecutive time periods to form two integrals; and output means including a difference-taking summing amplifier for combining said integrals to produce a signal capable of operating said device and proportional to said angular acceleration.
Claim 5
Independent Claim
111 words
A system for operating an acceleration-responsive device in accordance with the angular acceleration of a rotating body, said system comprising: signal-generator means associated with said body for producing a pulse train of a frequency proportional to the angular velocity of said body; smoothing the shaped pulse train and thereby producing a substantially continuous signal having an amplitude variable in proportion to the frequency of said pulse train; means for integrating the smoothed pulse train during two substantially consecutive time periods to form two integrals; and output means including a difference-taking summing amplifier for combining said integrals to produce a signal capable of operating said device and proportional to said angular acceleration.
Claim 6
Dependent Claim
22 words
The system defined in claim 3 wherein said averaging means is a resistance-capacitance network, and said shaping means is a pulse shaper.
Claim 7
Dependent Claim
43 words
The system defined in claim 3 wherein said signal-generator means comprises a disk formed with peripheral Notches, and a pickup coil proximal to the periphery of said disk and nonrotatable in relation thereto for generating an output proportional to the angular velocity thereof.
Claim 8
Dependent Claim
43 words
The system defined in claim 3 wherein said signal-generator means comprises a disk having peripheral magnetized portions and a pickup coil proximal to the periphery of said disk and nonrotatable in relation thereto for generating an output proportional to the angular velocity thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |