US Patent Application No: 2010/0082,191

Number of patents in Portfolio can not be more than 2000

MOTOR CONTROL METHOD FOR ELECTRIC-POWERED VEHICLE AND DRIVING APPARATUS FOR ELECTRIC-POWERED VEHICLE

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Abstract

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Disclosed is a motor control method for an electric-powered vehicle (1), which is designed to switch an output characteristic of an electric motor (5) for rotatably driving a driving wheel (16) of the vehicle (1), between a low-speed mode adaptable to a relatively low rotation speed operation region and a high-speed mode adaptable to a relatively high rotation speed operation region, on the basis of a given switching rotation speed (Nt) as a threshold. The motor control method comprises a vehicle-turning information acquisition step (S1, S2) of acquiring information about a turning movement of the vehicle (1), a vehicle-turning determination step (S5, S9, S14, S18) of determining whether the vehicle (1) is in a non-straight-ahead traveling state, based on the information acquired in the vehicle-turning information acquisition step, and a shift step (S6, S10, S15, S19) of, if the determination in the vehicle-turning determination step is made that the vehicle is in the non-straight-ahead traveling state, shifting the switching rotation speed (Nt) to a value different from that in a straight-ahead traveling state of the vehicle. The motor control method of the present invention can prevent a behavior of the vehicle (1) from becoming unstable when the output characteristic of the electric motor (5) for rotatably driving the driving wheel (16) is switched between the low-speed mode and the high-speed mode.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MAZDA MOTOR CORPORATIONHIROSHIMA1088

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
AMANO, Ryuichiro Aki-gun, JP 7 36
EBISUMOTO, Hirofumi Aki-gun, JP 2 21
SEO, Nobuhide Hiroshima-shi, JP 17 194
YONEMORI, Kei Hiroshima-shi, JP 16 91

Cited Art Landscape

Patent Info (Count) # Cites Year
 
TOKYO R&D C., LTD. (1)
* 6,107,761 Drive for electric vehicle and control method of the same 29 1997
 
BONEAL, INCORPORATED (1)
* 7,108,096 Vehicle control system with slow-in-turn capabilities and related method 12 2003
 
RUTTEN ENGINEERING (1)
* 6,491,422 Mixer 13 2001
 
HYUNDAI MOTOR COMPANY (1)
* 5,598,335 System and method for controlling a shift position when a vehicle travels along a steeply sloped road or a sharply curved road 84 1995
 
NISSAN MOTOR CO., LTD. (1)
* 6,083,138 Hybrid drive control system for vehicle 92 1999
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
* 6,380,640 Method of controlling power output apparatus 35 2000
 
The Consortium, LLC (1)
* 2006/0043,916 Motor system having multiple motor torque constants 5 2004
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 9,246,419 Method and system for controlling motor 0 2013
 
MAZDA MOTOR CORPORATION (2)
* 9,236,825 Vehicle control device and control method 0 2012
* 2014/0009,097 VEHICLE CONTROL DEVICE AND CONTROL METHOD 0 2012
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
* 9,249,771 Engine controlling apparatus 0 2010
 
SAMSUNG SDI CO., LTD. (1)
* 2014/0217,933 METHOD AND SYSTEM FOR CONTROLLING MOTOR 0 2013
* Cited By Examiner