| 摘要 |
In a method for controlling a vehicle with a drive system comprising a power unit configuration adapted to provide power for the vehicle's operation, and further comprising a planetary gear and a first and second electrical machine, connected to components in the planetary gear via their rotors, a locking means is moved from a release position, in which the planetary gear's components are free to rotate independently of each other, to a locked position, in which two of the planetary gear's components are locked together, so that the three components in the planetary gear rotate with the same speed. The power unit configuration is controlled in order to achieve a synchronous, or substantially synchronous, rotational speed between the input and output shaft of the planetary gear, and the locking means are then moved to the locked position. |
| 主权项 |
1. A method for controlling a vehicle with a drive system comprising a power unit configuration adapted to provide power to operate the vehicle, a planetary gear comprising three components in the form of a sun wheel, a ring gear and a planetary wheel carrier, wherein a first input shaft in the planetary gear is connected with a first of said components of the planetary gear, so that a rotation of such shaft leads to a rotation of such first of said components, wherein a second output shaft of the planetary gear, for transmission of torque for the propulsion of the vehicle, is connected with a second of said components in the planetary gear, so that a rotation of such shaft leads to a rotation of such second of said components, wherein the power unit configuration comprises a first electrical machine with a stator and a rotor, which is connected with a third of said components of the planetary gear, so that a rotation of the rotor leads to a rotation of such third of said components, and wherein the drive system also comprises a first locking means, which may be moved between a locked position in which two of said components are locked together so that the three components rotate with the same speed, and a release position in which the components are allowed to rotate with different speeds, characterised in that it is a wherein the vehicle with a comprises said power unit configuration, which also comprises a second electrical machine with a stator and a rotor connected with said input shaft of the planetary gear, which is being controlled, and in that the wherein the method comprises the following operations in order to, when the vehicle is driven with the first locking means in a release position and said components of the planetary gear rotating with different speeds, move such locking means to the locked position,
wherein said method comprises:
a) controlling the first electrical machine, throughout the course of the method in order to achieve the requested torque for transfer from the power unit configuration to the second output shaft of the planetary gear;b) speed control controlling the speed of a part in the power unit configuration, acting on the first input shaft of the planetary gear, towards the rotational speed of said second output shaft of the planetary gear; andc) shifting the first locking means to a locked position, when said first input and second output shaft has substantially the same, or the same, rotational speed. |
