| 摘要 |
A vehicle steering system (1) includes an axial force sensor (51) that detects a vibration of a vehicle wheel (3) of a vehicle; and a control device (30) including an FFT analysis unit that resolves the vibration of the vehicle wheel (3) detected by the axial force sensor (51) into a power spectrum at each predetermined frequency. The control device (30) executes compensation assist control that suppresses at least one of a deflection of the vehicle and a vibration of a steering component (2) of the vehicle that are caused by a puncture or a burst of the vehicle wheel (3), based on the vibration of the vehicle wheel (3) that occurs in a specific frequency domain formed by a frequency range between a normal-wheel frequency calculated based on a radius of the vehicle wheel (3) when the vehicle wheel (3) is normal and a vehicle speed and an abnormal-wheel frequency calculated based on a radius of the vehicle wheel (3) when the vehicle wheel (3) is punctured or burst and the vehicle speed. |
