Coordinated torque control security method and apparatus

Details Coordinated torque control security method and apparatus Coordinated torque control security method and apparatus

2007-08-07

2007-08-07

Tran, Dalena (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

C477S107000, C701S053000

Reexamination Certificate

active

11054678

ABSTRACT:
A method of preventing undesirable vehicle behavior in a vehicle torque control system that includes determining an expected axle torque based on a vehicle speed, a powerplant profile, an accelerator pedal position and/or a cruise control signal. The method also includes estimating an actual axle torque of a powerplant based on a powerplant maximum torque, a throttle position and powertrain inefficiencies and converting the expected axle torque to an expected acceleration and the actual axle torque to an actual acceleration based on a wheel radius and a road load. The method further includes regulating a torque output of a powerplant when a rate-of-change in a difference between the expected acceleration and the estimated actual acceleration is greater than a first threshold.

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Paul G. Griffiths; “Embedded Software Control Design for an Electronic Throttle Body”; Michigan Technological University, Copyright 2002; pp. 1-108.

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