Control device for electric automobiles including accelerator position and current feedback
Abstract
Abstract PULSE HAS BEEN GENERATED, THUS SECURING THE STABILITY OF CONTROL. FOR THE PURPOSE OF CONTROLLING A WHEEL DRIVING MOTOR WITH THE AID OF A THYRISTOR CHOPPER, THERE IS PROVIDED A MULTIVIBRATOR ADAPTED TO PRODUCE AN "ON" GATE PULSE FOR RENDERING THE CHOPPER OPERATIVE AND AN "OFF" GATE PULSE FOR RENDERING THE CHOPPER INOPERATIVE, AND THE CYCLIC PERIOD OF OSCILLATION OF THE MULTIVIBRATOR IS CONTROLLED BY MEANS OF AN ACCELERATOR PEDAL. WHEN THE ACCELERATOR PEDAL IS AT ITS FULL OPEN POSITION ND THE SPEED IS ABOVE A PREDETERMINED LEVEL, THE MULTIVIBRATOR IS LOCKED NOT TO PROVIDE "OFF" GATE PULSE. OUTPUT CURRENT OF THE THYRISTOR CHOPPER CIRCUIT IS DETECTED BY A CURRENT DETECTING CIRCUIT. PROVISION IS MADE FOR MEANS FOR IMPARTING PREFERENCE COMMAND TO THE MULTIVIBRATOR TO ENABLE THE LATTER TO PRODUCE "OFF" GATE PULSE WHEN THE MAGNITUDE OF THE DETECTED CURRENT REACHES A PREDETERMINED LEVEL. THE COMMAND CIRCUIT IS DESIGNED SO THAT THE GENERATION OF "ON" GATE PULSE IS TEMPORARILY LOCKED AFTER AN "OFF" GATE
Inventors
- 👤 S Kuriyama
- 👤 S Kikuchi
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |