IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0107831
(2002-03-27)
|
발명자
/ 주소 |
- Raftari, Abbas
- Curran, Patrick J.
- Garg, Vijay K
|
출원인 / 주소 |
- Ford Global Technologies, LLC
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
12 인용 특허 :
25 |
초록
▼
In an electric or hybrid electric vehicle, a voltage monitor (102) is directly coupled to a traction motor (38) and/or generator motor (30) to detect a permanent magnet induced voltage within the motor at a predetermined speed and no load condition (300). A controller (100) compares the detected per
In an electric or hybrid electric vehicle, a voltage monitor (102) is directly coupled to a traction motor (38) and/or generator motor (30) to detect a permanent magnet induced voltage within the motor at a predetermined speed and no load condition (300). A controller (100) compares the detected permanent magnet induced voltage with an expected reference voltage that represents an expected permanent magnet induced voltage at full magnetization and the predetermined speed (302). The controller produces an indication of magnetization based on the reference voltage, the detected permanent magnet induced voltage, and the predetermined speed. If the indication of magnetism reaches a predetermined threshold, the motor is made inoperable and/or a current to the motor is limited to prevent damage to components (306, 308, 310, 312, 314). Preferably, a user of the vehicle is made aware of these actions by an audible and/or visual indicator (308, 314). If available, another source of motive power is substituted for the motor that is made inoperable (316).
대표청구항
▼
In an electric or hybrid electric vehicle, a voltage monitor (102) is directly coupled to a traction motor (38) and/or generator motor (30) to detect a permanent magnet induced voltage within the motor at a predetermined speed and no load condition (300). A controller (100) compares the detected per
In an electric or hybrid electric vehicle, a voltage monitor (102) is directly coupled to a traction motor (38) and/or generator motor (30) to detect a permanent magnet induced voltage within the motor at a predetermined speed and no load condition (300). A controller (100) compares the detected permanent magnet induced voltage with an expected reference voltage that represents an expected permanent magnet induced voltage at full magnetization and the predetermined speed (302). The controller produces an indication of magnetization based on the reference voltage, the detected permanent magnet induced voltage, and the predetermined speed. If the indication of magnetism reaches a predetermined threshold, the motor is made inoperable and/or a current to the motor is limited to prevent damage to components (306, 308, 310, 312, 314). Preferably, a user of the vehicle is made aware of these actions by an audible and/or visual indicator (308, 314). If available, another source of motive power is substituted for the motor that is made inoperable (316). colors of red, green and blue. 24. A device according to claim 21, wherein the liquid crystal display device is operated in a normally black mode. 25. A device according to claim 21, wherein the plurality of pixels are arranged in a stripe arrangement. 26. A liquid crystal display device according to claim 1, wherein a light is parallelized by the first microlens array, the second microlens array and the third microlens array, and entered into the first plurality of pixels, the second plurality of pixels and the third plurality of pixels. 27. A liquid crystal display device according to claim 4, wherein a light is parallelized by the first microlens array, the second microlens array and the third microlens array, and entered into the first plurality of pixels, the second plurality of pixels and the third plurality of pixels. 28. A liquid crystal display device according to claim 7, wherein a light is parallelized by the first microlens array, the plurality of trapeziform prisms and the second microlens array, and entered into the first plurality of pixels, the second plurality of pixels and the third plurality of pixels. 29. A liquid crystal display device according to claim 10, wherein a light is parallelized by the first microlens array, the plurality of trapeziform prisms and the second microlens array, and entered into the first plurality
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