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Rollover control method and system thereof

  • US 20040128060A1
  • Filed: 11/12/2003
  • Published: 07/01/2004
  • Est. Priority Date: 12/27/2002
  • Status: Active Grant
First Claim
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1. A rollover control method, the method comprising the steps of:

  • detecting a steering angle, a wheel Revolutions Per Minute (RPM), a roll angle, a roll rate, a yaw rate and a vehicle speed detected according to the change of the operation state of a vehicle;

    processing said steering angle and said wheel RPM thus detected by a vehicle dynamical equation, thereby calculating a longitudinal velocity, a lateral velocity, a yaw rate, a roll rate, a roll angle, a slip angle, and a slip ratio;

    predicting a slip angle transiently generated while said yaw rate, said roll rate, said roll angle, and said vehicle speed thus detected and the values calculated using said vehicle dynamical equation are processed by a filter;

    calculating a tire lateral force based on said slip angle thus predicted;

    performing a pre-rollover decision subroutine that estimates the possibility of generating a rollover based on said tire lateral force thus computed;

    predicting a lateral velocity using the filter when there is a possibility of a generation of a rollover at said pre-rollover decision subroutine; and

    performing a rollover decision subroutine that assesses the rollover based on said lateral velocity thus predicted.

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