A vehicle drive control for a wheeled vehicle including a first motor
generator, and a second motor generator. A planetary gear set includes a
first rotating element connected to the first motor generator, a second
rotating element connected to the second motor generator, and a third
rotating element connected to a drive wheel. A rotation control mechanism
selectively restricts rotation of one of the first and second rotating
elements of the planetary gear set to establish a fixed speed ratio mode,
and releases the one of the first and second rotating elements to
establish a variable speed ratio mode. A control unit is configured to
control each operating state of the rotation control mechanism, the first
motor generator, and the second motor generator, and configured to
establish the variable speed ratio mode when a slip state of the drive
wheel is detected in the fixed speed ratio mode.