Patent ID: 7359776
Filing Date: 2008-04-15
Classification: B60R,G01C

Abstract:
1. An apparatus for correcting and diagnosing angular rate sensors installed in an automotive vehicle, comprising: a first angular rate sensor and a second angular rate sensor both installed in an automotive vehicle for generating angular detection signals representing an angular rate of said automotive vehicle; at least one acceleration sensor installed in said automotive vehicle for generating an acceleration detection signal representing an acceleration of said automotive vehicle; a judging section for judging a stopped condition of said automotive vehicle by applying the acceleration detection signal obtained from said acceleration sensor to an allowable variation range, wherein the allowable variation range can be altered during operation; an offset correcting section for generating offsets of the angular detection signals from the first and second angular rate sensors based on a judged result obtained from the judging section; and a sensitivity diagnosing section for diagnosing sensitivities of the first and second angular rate sensors based on corrected angular detection signals from the first and second angular rate sensors, the corrected angular detection signals being generated based on the angular detection signals and the offsets of the angular detection signals.