| 摘要 |
The present invention relates to a control system and method for changing speed in starting an engine of a hybrid vehicle that is capable of preventing the occurrence of shift shock. In a hybrid vehicle which includes an engine, a first motor for controlling the engine cranking and engine speed, a second motor that is a traction motor for directly transmitting torque to the axle, a first planet gear set in connection between the engine and the first motor, and a second planet gear set in connection between the engine and the second motor, the control system comprises: a PI control part which instructs a calculated torque to the second motor after calculating the torque, wherein the torque corresponds to the target speed of the second motor; and an engine friction torque feed-forward part for transmitting torque to the PI control part by a feed-forward term control method during starting of the engine, wherein the torque corresponds to the reacting power transmitted to the second motor. |
