VEHICLE DRIVE SYSTEM
First Claim
1. A vehicle drive system, including:
- a left-wheel drive unit havinga first motor for driving a left wheel of a vehicle anda first transmission that is provided on a power transmission line between the first motor and the left wheel;
a right-wheel drive unit havinga second motor for driving a right wheel of the vehicle anda second transmission that is provided on a power transmission line between the second motor and the right wheel; and
a motor control unit for controlling the first motor and the second motor,wherein the first and second transmissions each has a first to third rotational elements,wherein the first motor is connected to the first rotational element of the first transmission,wherein the second motor is connected to the first rotational element of the second transmission,wherein the left wheel is connected to the second rotational element of the first transmission,wherein the right wheel is connected to the second rotational element of the second transmission,wherein the third rotational element of the first transmission and the third rotational element of the second transmission are coupled to each other, andwherein the first and second transmissions each further has a fourth rotational element which are supported so as to revolve around by the second rotational element while meshing with the first rotational element and the third rotational element,wherein the motor control unit is configured to;
to control the first motor based on a first target revolution state quantity of the first transmission which is induced so that a rotating direction of the fourth rotational element of the first transmission rotating in one direction or an other direction is not reversed, and/orto control the second motor based on a second target revolution state quantity of the second transmission which is induced so that a rotating direction the fourth rotational element of the second transmission rotating in one direction or an other direction is not reversed,to thereby control the first motor and the second motor such that the rotating direction of the fourth rotational element of the first transmission and/or the rotating direction of the fourth rotational element of the second transmission are/is not reversed.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle drive system includes a left-wheel drive unit having a first motor and a first transmission, a right-wheel drive unit having a second motor and a second transmission, and a motor control unit. Each of the first and second transmissions has a first to third rotational elements. The first motor is connected to the first rotational element of the first transmission. The second motor is connected to the first rotational element of the second transmission. The left wheel is connected to the second rotational element of the first transmission. The right wheel is connected to the second rotational element of the second transmission. The third rotational element of the first transmission and the third rotational element of the second transmission are coupled to each other. Each of the first and second transmissions has a fourth rotational element which is supported to revolve around by the second rotational element.
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Citations
6 Claims
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1. A vehicle drive system, including:
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a left-wheel drive unit having a first motor for driving a left wheel of a vehicle and a first transmission that is provided on a power transmission line between the first motor and the left wheel; a right-wheel drive unit having a second motor for driving a right wheel of the vehicle and a second transmission that is provided on a power transmission line between the second motor and the right wheel; and a motor control unit for controlling the first motor and the second motor, wherein the first and second transmissions each has a first to third rotational elements, wherein the first motor is connected to the first rotational element of the first transmission, wherein the second motor is connected to the first rotational element of the second transmission, wherein the left wheel is connected to the second rotational element of the first transmission, wherein the right wheel is connected to the second rotational element of the second transmission, wherein the third rotational element of the first transmission and the third rotational element of the second transmission are coupled to each other, and wherein the first and second transmissions each further has a fourth rotational element which are supported so as to revolve around by the second rotational element while meshing with the first rotational element and the third rotational element, wherein the motor control unit is configured to; to control the first motor based on a first target revolution state quantity of the first transmission which is induced so that a rotating direction of the fourth rotational element of the first transmission rotating in one direction or an other direction is not reversed, and/or to control the second motor based on a second target revolution state quantity of the second transmission which is induced so that a rotating direction the fourth rotational element of the second transmission rotating in one direction or an other direction is not reversed, to thereby control the first motor and the second motor such that the rotating direction of the fourth rotational element of the first transmission and/or the rotating direction of the fourth rotational element of the second transmission are/is not reversed. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification