Control apparatus for electric vehicle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 6, 2003
Grant Date -
Apr 4, 2002
app pub date -
Sep 27, 2001
filing date -
Oct 4, 2000
priority date (Note) -
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Abstract
A control apparatus for an electric vehicle which improves the operability of an electric wheelchair on slopes is provided. The control apparatus includes a control unit which, when it determines that a rotational direction corresponding to a direction of an operation force is opposite to a rotational direction in which a driving wheel is actually rotated, sets an operation mode of the motor for driving the wheel to an electrical braking mode. Thus, the electric wheelchair is decelerated and the load on the operator is reduced. The control unit may control the motor such that the motor does not generate an electrical braking force until the driving wheel is rotated by a predetermined amount. In such a case, even when the driving wheel temporarily rotates in the reverse direction while it climbs up an upward slope, an unnecessary electrical braking force is not generated.
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