Please download the dossier by clicking on the dossier button x
×

Good checking for vehicle yaw rate sensor

  • US 8,494,708 B2
  • Filed: 08/20/2010
  • Issued: 07/23/2013
  • Est. Priority Date: 08/24/2009
  • Status: Expired due to Fees
First Claim
Patent Images

1. A controller for determining whether a previously-detected, vehicle-sensor malfunction still exists, the controller comprising:

  • an electronic, non-volatile memory; and

    an electronic processing unit connected to the electronic, non-volatile memory, the electronic processing unit including,a malfunction monitoring module configured to monitor operation of a yaw rate sensor using a first criteria and generate a first fault signal if the yaw rate sensor malfunctions, the first fault signal containing first fault information and causing at least one of an indicator to be activated or a vehicle control system to modify its operation from a first operating state to a second operating state,a failure handling module configured to cause the first fault information to be stored in the electronic, non-volatile memory, anda signal checking module configured to retrieve the first fault information from the electronic, non-volatile memory and perform a first signal check on information from the yaw rate sensor, the first signal check using a second criteria to determine the yaw rate sensor is functioning properly, the second criteria having smaller tolerances for deviations and fewer conditions on the driving situation to perform the evaluation than the first criteria; and

    wherein the first and second criteria include one or more of an sensor offset, a sensor integral, a vehicle speed, a cornering threshold, a sensor signal rate, a straight driving yaw rate, sensor statistical information, sensor counter information, an implausible value, and a duration.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×