Traveling control apparatus for electric vehicles
US6011378A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 6, 1998 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Apr 6, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control apparatus by which a duty ratio in consideration of how energy stored in storage cells is consumed is set to ensure a steady traveling feeling, a regeneration brake which can produce stable braking forces regardless of how storage cells are consumed, and a protective device by which a plurality of operation stop levels are set to be able to cancel the stop operation effected for the first time and to ensure reliable alarming, are provided. In the first and second embodiments, a chopper duty ratio is compensated depending on how storage cells are consumed, to provide a steady agreeable traveling feeling. In the third embodiment, regenerated electric power is consumed by a motor driving circuit to stabilize operation of a regeneration brake regardless of how storage cells are consumed, and improve performance thereof. In the fourth embodiment, in a protective device for determining an operating condition of equipment, issuing an alarm in the event of abnormality, and stopping operation of the equipment, the stop operation is effected in two steps and a cancel switch for canceling the stop operation in the first step is provided to, depending on the situation, cancel the sto…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.