ELECTRIC VEHICLE

DRIVE January 15, 2014
Source
An electric vehicle includes an in-wheel motor drive system (8). The in-wheel motor drive system (8) includes a wheel bearing unit (4) rotatably supporting a drive wheel (2), a motor unit (6), and a reducer unit (7). The electric vehicle also includes a disturbance observer (43) that determines an estimate (^Te) of external force influence on the drive wheel (2). The electric vehicle further includes a slip level-responsive corrector (44). The slip level-responsive corrector (44) may use the estimate (^Te) of external force influence, calculate a correction value (Tc) that may correspond to slip level of the drive wheel (2), and correct an accelerator signal (Tr) to the motor unit (6) with the correction value (Tc) to produce a motor torque command value (Tmr).

Discussion in the ATmosphere

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