US4555651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor speed control apparatus
Assignee: TOWNMOTOR Corp A CORP OF OHIO
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Filing: 1984-08-08
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Granted: 1985-11-26
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Expires: 2004-08-08
Abstract
Abstract Apparatus is provided for controlling increases in the speed of a motor, including a transducer coupled to an accelerator pedal, that generates digital numbers representing motor speed commands, a data processor for receiving the speed commands, generating motor speed limit signals in response to the digital numbers and delivering the limit signals to a controllable circuit for supplying power to the motor. The limit signals are delivered in response to time and the magnitude of the speed commands.
Inventors
- 👤 Grant C. Melocik
- 👤 William Pickering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/68; B; B60; B60L; B60L50/00; B60L50/50; B60L50/52; B60L2250/00; B60L2250/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T10/70; Y10; Y10S; Y10S388/00; Y10S388/90; Y10S388/902; Y10S388/907; Y10S388/921
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
206 words
Appparatus (10) for controlling the rate of acceleraton of an electric motor (12) of a vehicle, said vehicle having a power source (48), comprising: generating means (14) for producing a predetermined plurality of motor speed command signals, each signal having an incrementally different digital value; processor means (32) for receiving each of said motor speed command signals, producing an accelerator ramp signal in response to receiving said motor speed command signals, said accelerator ramp signal having a predetermined digital value, storing said produced accelerator ramp signal within said processor means (32), producing predetermined successive motor speed limit signals each for a first predetermined period of time in response to said received motor speed command signal having a digital value geater than said stored accelerator ramp signal digital value and to said stored accelerator ramp signal digital value being in a first predetermined range of values, and incrementing said accelerator ramp signal to the next successive value in response to each successive motor speed limit signal being produced for said first predetermined period of time; and controllable supplying means (30) for receiving said motor speed limit signals and controllably coupling said power source (48) to said motor (12) in response to said received motor speed limit signals.
Claim 2
Dependent Claim
206 words
Appparatus (10) for controlling the rate of acceleraton of an electric motor (12) of a vehicle, said vehicle having a power source (48), comprising: generating means (14) for producing a predetermined plurality of motor speed command signals, each signal having an incrementally different digital value; processor means (32) for receiving each of said motor speed command signals, producing an accelerator ramp signal in response to receiving said motor speed command signals, said accelerator ramp signal having a predetermined digital value, storing said produced accelerator ramp signal within said processor means (32), producing predetermined successive motor speed limit signals each for a first predetermined period of time in response to said received motor speed command signal having a digital value geater than said stored accelerator ramp signal digital value and to said stored accelerator ramp signal digital value being in a first predetermined range of values, and incrementing said accelerator ramp signal to the next successive value in response to each successive motor speed limit signal being produced for said first predetermined period of time; and controllable supplying means (30) for receiving said motor speed limit signals and controllably coupling said power source (48) to said motor (12) in response to said received motor speed limit signals.
Claim 3
Dependent Claim
114 words
Apparatus (10), as set forth in claim 1, wherein said processor means (32) produces only one motor speed limit signal for a second predetermined period of time greater than said first predetermined period of time, in response to said received motor speed command signal having a digital value greater than said stored accelerator ramp signal digital value and to said stored accelerator ramp signal digital value being in a second predetermined range of values exclusive of said first predetermined range of values, said stored accelerator ramp signal value being periodically incremented to the next successive value in response to said one motor speed limit signal being produced for said first predetermined period of time.
Claim 4
Dependent Claim
34 words
Apparatus, as set forth in claim 2, wherein the total number of different values of said first and second predetermined ranges of values is equal to the number of said motor speed command signals.
Claim 5
Dependent Claim
45 words
Apparatus (10), as set forth in claim 2, wherein said one produced motor speed limit signal has a value determined by said received motor speed command signal in response to said motor speed command signal digital value being in said second predetermined range of values.
Claim 6
Dependent Claim
47 words
Apparatus, as set forth in claim 2, wherein said first predetermined period of time is fixed, and said second predetermined period of time is varied in response to the difference between said received motor speed command signal digital value and said stored accelerator ramp signal digital value.
Claim 7
Dependent Claim
62 words
Apparatus, as set forth in claim 2, wherein the absolute number of different motor speed limit signals produced in response to said received motor speed command signal having a digital value greater than said stored accelerator ramp signal digital value is equal to the arithmetic difference between said received motor command signal digital value and said stored accelerator ramp signal digital value.
References Cited (Backward Citations)
FR2325533A1
Cited
US4090115A
Cited
US4282466A
Cited
US4366420A
Cited
US4386301A
Cited
EP0044773A1
Cited
WO1982000738A1
Cited
US4381479A
Cited
US4441061A
Cited
US4427930A
Cited
US4423362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |