US Patent Application No: 2010/0082,191

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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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Patent Owner(s)

Patent OwnerAddressTotal Patents
MAZDA MOTOR CORPORATIONHIROSHIMA2857

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amano, Ryuichiro Kusatsu, JP 12 23
EBISUMOTO, Hirofumi - 3 8
Seo, Nobuhide Hiroshima, JP 28 165
Yonemori, Kei Tokyo, JP 29 69

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