| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a four-wheel drive control apparatus that can prevent torque loss when a vehicle shifts from a rollback state to a forward driving state. <P>SOLUTION: When a four-wheel drive vehicle 100 that, for example, drives front wheels 104a and 104b out of front and rear wheels with an engine 101 and drives the other rear wheels 105a and 105b with a motor 4 is in a rollback state, for the generation of power necessary during the rollback, a motor control parameter decision part 5b decides a torque command during the rollback as a control parameter of the motor 4 in accordance with an operating point on a characteristic line of output from a generator 2, and a minimum field current estimation part 5c estimates a minimum field current capable of outputting power to be generated by the generator 2 and supplied to the motor 4 when the vehicle shifts from the rollback state to a forward driving state while maintaining the decided torque command, and applies the minimum to the generator 2 in advance during the rollback. <P>COPYRIGHT: (C)2008,JPO&INPIT |
