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Machine translation
1. (WO2007004357) ELECTRIC POWER STEERING SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/004357    International Application No.:    PCT/JP2006/309617
Publication Date: 11.01.2007 International Filing Date: 09.05.2006
Chapter 2 Demand Filed:    13.07.2006    
IPC:
B62D 5/04 (2006.01), B60R 16/02 (2006.01), B60R 16/03 (2006.01), B62D 6/00 (2006.01), G05F 1/00 (2006.01), H02M 3/155 (2006.01)
Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA [JP/JP]; 1, Toyota-cho, Toyota-shi, Aichi 4718571 (JP) (For All Designated States Except US).
KASAI, Eiji [JP/JP]; (JP) (For US Only).
FUJINORI, Yoichi [JP/JP]; (JP) (For US Only).
SAITO, Takatoshi [JP/JP]; (JP) (For US Only).
YAMASHITA, Masaharu [JP/JP]; (JP) (For US Only).
YAMAZAKI, Ippei [JP/JP]; (JP) (For US Only).
FUJITA, Shuji [JP/JP]; (JP) (For US Only)
Inventors: KASAI, Eiji; (JP).
FUJINORI, Yoichi; (JP).
SAITO, Takatoshi; (JP).
YAMASHITA, Masaharu; (JP).
YAMAZAKI, Ippei; (JP).
FUJITA, Shuji; (JP)
Agent: PROSPEC PATENT FIRM; 12th Floor, NAGOYA-KS Bldg., 1-18, Taiko 3-chome, Nakamura-ku, Nagoya-shi, Aichi 453-0801 (JP)
Priority Data:
2005-197053 06.07.2005 JP
Title (EN) ELECTRIC POWER STEERING SYSTEM
(FR) SYSTÈME DE DIRECTION ASSISTÉE ÉLECTRIQUE
(JA) 電動パワーステアリング装置
Abstract: front page image
(EN)A power supply (40) has a power supply circuit constituted of a main power supply circuit (50) having a high voltage battery (51) and a step-down circuit (55) for lowering the voltage of the high voltage battery (51), and a sub-power supply circuit (60) having a low voltage battery (61) and a step-up circuit (70) for raising the voltage of the low voltage battery (61). The main power supply circuit (50) and the sub-power supply circuit (60) are connected in parallel, and the output voltage of the sub-power supply circuit (60) is set lower than the output voltage of the main power supply circuit (50). When the output voltage of the main power supply circuit (50) drops below target voltage of the sub-power supply circuit (60), the voltage is raised by the step-up circuit (70) before being supplied to a motor drive circuit (32). Power supply to an electric power steering system can be backed up at low cost.
(FR)Selon la présente invention, une alimentation (40) comprend un circuit d’alimentation constitué d’un circuit principal (50) doté d’une batterie haute tension (51) et d’un circuit abaisseur (55) qui réduit la tension de la batterie haute tension (51), et d’un circuit secondaire (60) doté d’une batterie basse tension (61) et d’un circuit élévateur (70) qui accroît la tension de la batterie basse tension (61). Le circuit principal (50) et le circuit secondaire (60) sont connectés en parallèle, et la tension de sortie du circuit secondaire (60) est réglée pour être inférieure à celle du circuit principal (50). Lorsque la tension de sortie du circuit principal (50) devient inférieure à une tension cible du circuit secondaire (60), elle est accrue par le circuit élévateur (70) avant d’alimenter un circuit de commande de moteur (32). La présente invention permet d’obtenir un système de direction assistée électrique à alimentation auxiliaire économique.
(JA)電源装置40として、高圧バッテリ51とその高圧バッテリ51の電圧を下げる降圧回路55とを備えた主電源供給回路50と、低圧バッテリ61とその低圧バッテリ61の電圧を上げる昇圧回路70とを備えた副電源供給回路60とで電源供給回路を構成し、主電源供給回路50と副電源供給回路60とを並列に接続して設けるとともに、副電源供給回路60の出力電圧を、主電源供給回路50の出力電圧よりも低く設定した主電源供給回路50の出力電圧が副電源供給回路60の目標電圧より低下した場合には、昇圧回路70にて昇圧してモータ駆動回路32に電源供給する。従って、電動パワーステアリング装置の電源バックアップを低コストにて行うことができるようになる。
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)