The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2003
Filed:
Sep. 27, 2001
Takahito Inoue, Kobe, JP;
Nabco, Ltd., Kobe, JP;
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.