Securing and diagnosing the vehicle speed input and direction for torque control systems

Securing and diagnosing the vehicle speed input and direction for torque control systems

A vehicle speed module includes a speed arbitration module that receives at least two of a wheel speed, a transmission output speed (TOS), and an electric motor speed (EMS), and that determines a vehicle speed based on a comparison of the at least two of the wheel speed, the TOS, and the EMS. A spee...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Stempnik, Joseph M, Jess, Richard B, Grenn, Daniel P, Bagley-Reed, Tracey A, Van Diepen, Ronald W, Costin, Mark H, Turley, Michael A, Nelson, Sandra J, Lehman, Bryan D
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A vehicle speed module includes a speed arbitration module that receives at least two of a wheel speed, a transmission output speed (TOS), and an electric motor speed (EMS), and that determines a vehicle speed based on a comparison of the at least two of the wheel speed, the TOS, and the EMS. A speed diagnostic module selectively diagnoses a fault in one of a wheel speed sensor, a TOS sensor, and an EMS sensor based on the comparison.