06-11-2014 дата публикации
Номер: US20140330470A1
Принадлежит:
An angular acceleration monitor may monitor whether or not an angular acceleration of a wheel detected by an angular acceleration detector is equal to or smaller than an acceptable angular acceleration (W) that is calculated with the following formula: W=k1×R×Tt/m/rwhere k1 is a constant, Tt is a total drive torque that is a sum of drive torques of all motor units that drive wheels of the vehicle, m is vehicle mass, r is tire radius, and R is reduction ratio of a reducer unit interposed between the motor unit and the wheel. A slip-responsive controller causes, if it is determined that the acceptable angular acceleration is exceeded, a motor controller to reduce a drive torque of the motor unit(s). 1. An electric vehicle control device comprising:a motor controller configured to control, according to a torque command fed from a torque command generator, a torque of a motor unit that is configured to drive a wheel;an angular acceleration detector configured to detect an angular acceleration of a wheel driven by the motor unit; {'br': None, 'i': W=k', 'R×Tt/m/r, 'sup': '2', '1×\u2003\u2003(1)'}, 'an angular acceleration monitor configured to monitor whether or not an angular acceleration of a wheel detected by the angular acceleration detector is equal to or smaller than an acceptable angular acceleration W that is calculated with one of following formulas (1) to (6) {'br': None, 'i': W=k', 'R×Tt/m/r', '+mg', 'a', 'm/r, 'sup': '2', '2××sin()/\u2003\u2003(2)'}, 'where k1 is a constant that takes an arbitrary value in the range of 1 to 2;'} {'br': None, 'i': W=k', 'R×Tt/m/r', '+mg', 'a', 'm/r, 'sup': '2', '3××sin(1)/\u2003\u2003(3)'}, 'where k2 is a constant that takes an arbitrary value in the range of 1 to 2 and g is a gravitational acceleration;'} {'br': None, 'i': W=k', '×R', 'm/r, 'sup': '2', '4×Tmaxt/\u2003\u2003(4)'}, 'where k3 is a constant that takes an arbitrary value in the range of 1 to 2;'} {'br': None, 'i': W=k', 'R', 'm/r', '+mg', 'a', 'm/r, 'sup': '2', '5 ...
Подробнее