Patent ID: 7861625

Claim:
A dynamic alignment monitoring system for an on-vehicle disk brake lathe system having an alignment mechanism for reducing misalignment between a lathe axis and a hub axis about which a brake disk rotates, the dynamic alignment monitoring system comprising: an angular rate sensor for providing an angular rate signal responsive on a time-dependent basis to angular motion resulting from the misalignment; a tachometer providing a tachometer signal responsive to the speed of rotation of the lathe; an alignment signal processing routine that operates on the signals generated by said angular rate sensor and said tachometer to provide a time-dependent output; a scaling routine for processing the angular rate signal so as to allow said alignment signal processing routine to provide a derived lateral runout (LRO) value for the brake disk which would result from machining under the current misalignment condition; a display for presenting a representation of the derived LRO value in a time-dependent manner; and an alignment control routine for operating the alignment mechanism to reduce the misalignment in response to the time-dependent output of said alignment signal processing routine, said alignment control routine acting to stop the alignment mechanism and maintain the alignment of the lathe axis relative to the hub axis when the time-dependent output indicates that the state of misalignment is below a predetermined value.