Power output apparatus using different torque and speed pattern characteristics and control method thereof
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsToshifumi Takaoka, Katsuhiko Hirose
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Abstract
A power output apparatus capable of generating power from at least an electric motor to a drive shaft includes a pattern storing unit that stores a plurality of output characteristic patterns in which power is generated to the drive shaft, a pattern selecting unit that selects one of the output characteristic patterns stored, and a drive controller that controls driving of the electric motor so that power that is within a range of the selected output characteristic pattern is generated to the drive shaft. The power output apparatus may also be controlled to operate the motor in a dash mode that allow motor output to exceed rated values for short periods of time to increase drivability.
Claims13
A power output apparatus operable to generate power from at least an electric motor to a drive shaft, comprising:
- a pattern storing unit that stores a plurality of output characteristic patterns in which the power is generated to the drive shaft, wherein an output characteristic pattern of the plurality of output characteristic patterns correlates between a motor speed and an output torque for supplying the power;
- a pattern selecting unit that selects one of said plurality of output characteristic patterns stored in the pattern storing unit;
- a drive controller that controls driving of at least the electric motor so that the power that is within a range of the selected output characteristic pattern is generated to the drive shaft;
- and
- a command generating unit that generates a command to drive the electric motor with a driving characteristic that exceeds a rated value of the driving characteristic of the electric motor;
- wherein the drive controller is operable, in response to the command from the command generating unit, to add a predetermined output to the selected output characteristic pattern, and control driving of the electric motor with the driving characteristic that exceeds the rated value for a limited period of time.
A power output apparatus operable to generate power from at least an electric motor to a drive shaft, comprising:
- a command generating unit that generates a command to drive the electric motor with a driving characteristic that exceeds a rated value of the driving characteristic of the electric motor, wherein the driving characteristic correlates between a motor speed and an output torque for supplying the power;
- a drive controller that controls driving of the electric motor, wherein the drive controller is operable, in response to the command from the command generating unit, to control driving of the electric motor with the driving characteristic that exceeds the rated value for a limited period of time;
- a motor state detector that detects an operating state of the electric motor;
- and
- a state determining unit that determines whether the electric motor can be driven with the driving characteristic that exceeds the rated value, based on the operating state detected by the motor state detector,
- wherein the drive controller performs control in response to the command from the command generating unit, depending upon a result of determination made by the state determining unit.
Dependencies are inferred from the claim text.