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Drive System, Power Output System Incorporating The Drive System, A Vehicle Equipped With The Power Output System, And Control Method For A Drive System

  • US 20080033620A1
  • Filed: 02/23/2006
  • Published: 02/07/2008
  • Est. Priority Date: 02/24/2005
  • Status: Active Grant
First Claim
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1. A drive system that drives a drive shaft, comprising:

  • a motor that outputs power;

    a shifting/transmitting device that transmits power from a rotating shaft of the motor to the drive shaft, and changes a transmission ratio between the rotating shaft of the motor and the drive shaft by driving an actuator;

    a shift learning device that performs a learning operation to learn at least one of an operational state of the actuator and an operational state of the motor, when the transmission ratio of the shifting/transmitting device is changed such that an amount of change in driving force on the drive shaft side, that is output to the drive shaft from the motor via the shifting/transmitting device, is within a predetermined range; and

    a shift control device that controls the actuator of the shifting/transmitting device using results of the learning operation such that the transmission ratio of the shifting/transmitting device changes.

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