Driving source control apparatus

A driving source control apparatus used for a driving apparatus including a driving source, the driving source being connected to a drive-train including a drive shaft, the driving source control apparatus being configured to control the driving source such that the driving source is driven at a torque based on a target torque, the driving source control apparatus comprising an electronic control unit configured to

• repeatedly compute a period and amplitude of torsional fluctuations of the drive-train to be obtained by applying a phase-lead process, which is a process of advancing a phase by a predetermined amount, to a difference between a rotation speed value of the driving source computed from a crank angle and a rotation speed value of the driving source computed from a rotation speed of the drive shaft, and
• when the computed amplitude of the torsional fluctuations in a predetermined period becomes greater than or equal to a predetermined amplitude at least two times consecutively, execute predetermined control in which the driving source is controlled so as to be driven at a torque obtained by adding a correction torque opposite in phase to the torsional fluctuations to the target torque.