Vehicle driving force control apparatus
First Claim
1. A vehicle driving force control apparatus of a vehicle having an electric motor transmitting a drive torque to a first wheel, and a clutch installed between the electric motor and the first wheel, the vehicle driving force control apparatus comprising:
- a clutch control section configured to control engagement and release of the clutch; and
a motor control section configured to control a motor response characteristic of the electric motor to change a responsiveness of the electric motor to a control command by increasing the motor response characteristic of the electric motor from a first response characteristic to a second response characteristic when the clutch control section releases the clutch.
1 Assignment
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Accused Products
Abstract
A vehicle driving force control apparatus is provided for a vehicle having an electric motor transmitting a drive torque to a first wheel, and a clutch installed between the electric motor and the first wheel. The vehicle driving force control apparatus basically comprises a clutch control section and a motor control section. The clutch control section is configured to control engagement and release of the clutch. The motor control section is configured to control a motor response characteristic by increasing the motor response characteristic of the motor from a first response characteristic to a second response characteristic when the clutch control section releases the clutch. Preferably, the vehicle driving force control apparatus is configured to cancel insufficient torque generation due to undershoot armature current when controlling armature current of an electric motor and transmitting torque to subordinate drive wheels.
19 Citations
18 Claims
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1. A vehicle driving force control apparatus of a vehicle having an electric motor transmitting a drive torque to a first wheel, and a clutch installed between the electric motor and the first wheel, the vehicle driving force control apparatus comprising:
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a clutch control section configured to control engagement and release of the clutch; and
a motor control section configured to control a motor response characteristic of the electric motor to change a responsiveness of the electric motor to a control command by increasing the motor response characteristic of the electric motor from a first response characteristic to a second response characteristic when the clutch control section releases the clutch.
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2. A vehicle driving force control apparatus of a vehicle having an electric motor transmitting a drive torque to a first wheel, and a clutch installed between the electric motor and the first wheel, the vehicle driving force control apparatus comprising:
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a clutch control section configured to control engagement and release of the clutch; and
a motor control section configured to control a motor response characteristic by increasing the motor response characteristic of the electric motor from a first response characteristic to a second response characteristic when the clutch control section releases the clutch, the motor control section being configured to control at least one of an armature current of the electric motor and a field current of the electric motor such that the motor response characteristic of the electric motor increases from the first response characteristic to the second response characteristic when the clutch control section releases the clutch.
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3. A vehicle driving force control apparatus of a vehicle having an electric motor transmitting a drive torque to a first wheel, and a clutch installed between the electric motor and the first wheel, the vehicle driving force control apparatus comprising:
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a clutch control section configured to control engagement and release of the clutch;
a motor control section configured to control a motor response characteristic by increasing the motor response characteristic of the electric motor from a first response characteristic to a second response characteristic when the clutch control section releases the clutch; and
a main driving source configured to drive a second wheel that is not driven by the electric motor. - View Dependent Claims (4, 5, 6, 7, 16)
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8. A vehicle driving force control apparatus of a vehicle having an electric motor transmitting a drive torque to a first wheel, and a clutch installed between the electric motor and the first wheel, the vehicle driving force control apparatus comprising:
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a clutch control section configured to control engagement and release of the clutch;
a motor control section configured to control a motor response characteristic by increasing the motor response characteristic of the electric motor from a first response characteristic to a second response characteristic when the clutch control section releases the clutch;
a surplus torque computing section configured to compute a surplus torque of a second wheel driven by a main driving source independent of the clutch being engaged;
an electric motor torque computing section configured to compute an electric motor torque based on the surplus torque; and
a mode selection section configured to select a multi-wheel drive mode when the electric motor torque is higher than a predetermined threshold value, and select a non-all wheel drive mode when the electric motor torque is equal to or lower than the predetermined threshold value. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 17)
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18. A vehicle driving force control apparatus of a vehicle having an electric motor transmitting a drive torque to a first wheel, and a clutch installed between the electric motor and the first wheel, the vehicle driving force control apparatus comprising:
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clutch control means for controlling engagement and release of the clutch; and
motor control means for controlling a motor response characteristic of the electric motor to change a responsiveness of the electric motor to a control command by increasing the motor response characteristic of the electric motor from a first response characteristic to a second response characteristic when the clutch control means releases the clutch.
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Specification