Vibration damper for use in wheel brake

摘要

A vibration damper detects vibrations of brake pads (3) and vibrates the pads (3) in such a way as to damp the vibrations detected. The damper has the function of adjusting control constants of a control circuit (10) according to the degree of deterioration with time, of the pads (3) due to wear so that vibrations of the pads can always be damped in an optimum manner. A vibration detector (7) means detects frictional vibrations of the pads (3) and the disk rotor (4). A control signal corresponding to the detected vibration frequency is applied to a vibrator means (8) through the control circuit (10). When an input signal for correction timing is inputted from an ignition switch, a signal generator (11) transmits a signal having a predetermined frequency to the vibrator means (8). The resulting vibration is detected by a signal detector (7). Based on the detected signal, transfer functions for the control circuit (10) are adjusted to suppress vibrations having squealing frequencies. <IMAGE>