Vehicle and braking feedback control method for the same
First Claim
1. A braking feedback control method for a vehicle, wherein the vehicle comprises an engine unit, a transmission unit adapted to selectively couple with the engine unit and configured to transmit the power generated by the engine unit, a first motor generator coupled with the transmission unit, an output unit, a power switching device, a second motor generator configured to drive at least one of front and rear wheels of the vehicle, and a power battery for supplying power to the first motor generator and the second motor generator, wherein the output unit is configured to transmit the power transmitted by the transmission unit to at least one of the front and rear wheels of the vehicle, the power switching device is adapted to control power transmission between the transmission unit and the output unit, and the braking feedback control method comprises the following steps:
- detecting a current speed of the vehicle and a depth of a braking pedal of the vehicle; and
when the current speed of the vehicle is greater than a preset speed, the depth of the braking pedal is greater than 0, and an anti-lock braking system of the vehicle is in a non-working state, controlling the vehicle to enter a braking feedback control mode, wherein when the vehicle is in the braking feedback control mode, a required braking torque corresponding to the vehicle is obtained according to the depth of the braking pedal, and a braking torque of the first motor generator, a braking torque of the second motor generator, and a braking torque of basic braking performed on the vehicle are distributed according to the required braking torque, wherein when the vehicle is in the braking feedback control mode,a feedback limit value of the first motor generator and a feedback limit value of the second motor generator are obtained according to current running states of the first motor generator and the second motor generator;
a feedback limit value of the motor generator controller is obtained according to a current running state of a motor generator controller of the vehicle;
a current allowable charging power of the power battery is calculated according to a working state of the power battery, and a current feedback limit value of the power battery is obtained according to the current allowable charging power of the power battery; and
a minimum feedback limit value of the feedback limit value of the first motor generator, the feedback limit value of the second motor generator, the feedback limit value of the motor generator controller, and the current feedback limit value of the power battery is obtained.
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Accused Products
Abstract
The present disclosure discloses a vehicle and a braking feedback control method for the same. The braking feedback control method includes the following steps: detecting a current speed of a vehicle and a depth of a braking pedal of the vehicle; when the current speed of the vehicle is greater than a preset speed, the depth of the braking pedal is greater than 0, and an anti-lock braking system of the vehicle is in a non-working state, controlling the vehicle to enter a braking feedback control mode, where when the vehicle is in the braking feedback control mode, a required braking torque corresponding to the vehicle is obtained according to the depth of the braking pedal, and a braking torque of a first motor generator, a braking torque of a second motor generator, and a braking torque of basic braking performed on the vehicle are distributed according to the required braking torque.
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Citations
15 Claims
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1. A braking feedback control method for a vehicle, wherein the vehicle comprises an engine unit, a transmission unit adapted to selectively couple with the engine unit and configured to transmit the power generated by the engine unit, a first motor generator coupled with the transmission unit, an output unit, a power switching device, a second motor generator configured to drive at least one of front and rear wheels of the vehicle, and a power battery for supplying power to the first motor generator and the second motor generator, wherein the output unit is configured to transmit the power transmitted by the transmission unit to at least one of the front and rear wheels of the vehicle, the power switching device is adapted to control power transmission between the transmission unit and the output unit, and the braking feedback control method comprises the following steps:
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detecting a current speed of the vehicle and a depth of a braking pedal of the vehicle; and when the current speed of the vehicle is greater than a preset speed, the depth of the braking pedal is greater than 0, and an anti-lock braking system of the vehicle is in a non-working state, controlling the vehicle to enter a braking feedback control mode, wherein when the vehicle is in the braking feedback control mode, a required braking torque corresponding to the vehicle is obtained according to the depth of the braking pedal, and a braking torque of the first motor generator, a braking torque of the second motor generator, and a braking torque of basic braking performed on the vehicle are distributed according to the required braking torque, wherein when the vehicle is in the braking feedback control mode, a feedback limit value of the first motor generator and a feedback limit value of the second motor generator are obtained according to current running states of the first motor generator and the second motor generator; a feedback limit value of the motor generator controller is obtained according to a current running state of a motor generator controller of the vehicle; a current allowable charging power of the power battery is calculated according to a working state of the power battery, and a current feedback limit value of the power battery is obtained according to the current allowable charging power of the power battery; and a minimum feedback limit value of the feedback limit value of the first motor generator, the feedback limit value of the second motor generator, the feedback limit value of the motor generator controller, and the current feedback limit value of the power battery is obtained. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle, comprising:
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an engine unit a transmission unit adapted to selectively couple with the engine unit and also configured to transmit the power generated by the engine unit a first motor generator coupled with the transmission unit an output unit configured to transmit the power transmitted by the transmission unit to at least one of the front and rear wheels of the vehicle; a power switching device adapted to control power transmission between the transmission unit and the output unit a second motor generator configured to drive at least one of the front and rear wheels; a power battery respectively connected to the first motor generator and the second motor generator to supply power to the first motor generator and the second motor generator; and a controller, wherein when a current speed of the vehicle is greater than a preset speed, a depth of the braking pedal of the vehicle is greater than 0, and an anti-lock braking system of the vehicle is in a non-working state, the controller controls the vehicle to enter a braking feedback control mode, wherein when the vehicle is in the braking feedback control mode, the controller obtains a required braking torque corresponding to the vehicle according to the depth of the braking pedal, and distributes, according to the required braking torque, a braking torque of the first motor generator, a braking torque of the second motor generator, and a braking torque of basic braking performed on the vehicle, wherein when the vehicle is in the braking feedback control mode, the controller obtains a feedback limit value of the first motor generator and a feedback limit value of the second motor generator according to current running states of the first motor generator and the second motor generator, obtains a feedback limit value of the motor generator controller according to a current running state of a motor generator controller of the vehicle, and obtains a current feedback limit value of the power battery according to the current allowable charging power of the power battery, and the controller obtains, according to the feedback limit value of the first motor generator, the feedback limit value of the second motor generator, the feedback limit value of the motor generator controller, and the current feedback limit value of the power battery, a minimum feedback limit value of the feedback limit value of the first motor generator, the feedback limit value of the second motor generator, the feedback limit value of the motor generator controller, and the current feedback limit value of the power battery. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A braking feedback control method for a vehicle, wherein the vehicle comprises an engine unit, a transmission unit adapted to selectively couple with the engine unit and configured to transmit the power generated by the engine unit, a first motor generator coupled with the transmission unit, and a second motor generator configured to drive at least one of front and rear wheels of the vehicle, and a power battery for supplying power to the first motor generator and the second motor generator, the method comprising:
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controlling the vehicle to enter a braking feedback control mode, in which, a required braking torque corresponding to the vehicle is obtained according to a depth of the braking pedal, and a braking torque of the first motor generator, a braking torque of the second motor generator, and a braking torque of basic braking performed on the vehicle are distributed according to the required braking torque, wherein when the vehicle is in the braking feedback control mode, a feedback limit value of the first motor generator and a feedback limit value of the second motor generator are obtained according to current running states of the first motor generator and the second motor generator; a feedback limit value of the motor generator controller is obtained according to a current running state of a motor generator controller of the vehicle; a current allowable charging power of the power battery is calculated according to a working state of the power battery, and a current feedback limit value of the power battery is obtained according to the current allowable charging power of the power battery; and a minimum feedback limit value of the feedback limit value of the first motor generator, the feedback limit value of the second motor generator, the feedback limit value of the motor generator controller, and the current feedback limit value of the power battery is obtained.
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Specification