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专利名称：Method and system for determining and
compensating for a faulty wheel speed inputsignal in a vehicle control system
发明人：Dan Negrin,Jan van Deventer申请号：US08/383258申请日：19950203公开号：US052280A公开日：19970624
摘要：Method and system are provided for \"filtering out\" a faulty wheel speed inputsignal in a vehicle control system, such as an ABS and/or TC system in order to ensurethat the faulty wheel speed input signal does not contaminate or corrupt wheel speedinformation contained in the other wheel speed input signals. If such faulty wheel speedinput signal indicates an abnormally high speed, it will increase the other wheel speedinformation if undetected. The wheel speed information is essential in detecting wheelinstability or slip. It is important that wheel speed is not over-estimated since this mayresult in false slip detection and false ABS activation. Over-estimation of the vehiclespeed would occur if the information from a spinning wheel is not properly filtered orcompensated for. In one embodiment of the present invention, a bad sensor is detectedby detecting and compensating for a single outlying ramp (outlier) of wheel speed. In asecond embodiment of the present invention, an erratic sensor is detected andcompensated for in the control system.
申请人：KELSEY-HAYES COMPANY
代理机构：MacMillan, Sobanski and Todd
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