Evenson, McKeown, Edwards & Lenahan, P.L.L.C.
Control apparatus for an electric vehicle and a method therefor
 Problems of a dead-time due to a make-contact delay time until the closure of the regeneration contactor and a drop of torque occurring in the prior art controller for an electric vehicle are solved by the invention, thereby providing an improved drive feeling during transition from its regenerating braking to plugging braking. Specifically, a regeneration contactor's contact voltage is entered to the arithmetic unit, upon set-up of a condition for stopping the regenerating braking, the control for closing the regeneration contactor is executed, and immediately upon detection of the actual closure thereof, the switching operation is cut off at a timing faster than the switching cycle thereby allowing for the transition to the plugging braking to be enabled. 
Hitachi, Ltd. Hitachi Car Engineering Co., Ltd.
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B60L B60L B60L Y02T B60L Y02T Y02T B60L
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Nobuyoshi Hiroyuki Minoru Kenichi
Takahashi Yamada Kaminaga Maehara