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Method of controlling launch of vehicle

  • US 10,093,318 B2
  • Filed: 11/29/2016
  • Issued: 10/09/2018
  • Est. Priority Date: 06/28/2016
  • Status: Active Grant
First Claim
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1. A method of controlling launch of a vehicle, comprising:

  • a setting step in which a controller sets a predetermined target engine speed of an engine according to an operation amount of an accelerator pedal;

    a transient control step in which the controller controls a clutch torque based on the predetermined target engine speed;

    a transient state determining step in which the controller determines, during performing of the transient control step, when a transition period of change of the engine speed elapsed;

    a first correction amount determination step in which when it is determined as a result of performing the transient state determining step that the transition period of change of the engine speed elapsed, the controller determines a correction amount by using a difference between a measured engine speed input and the predetermined target engine speed;

    a correction applying step in which the controller adds the correction amount to the predetermined target engine speed and then determines a final target engine speed;

    an error determination step in which the controller determines an engine speed control error by using a difference between the final target engine speed and the measured engine speed; and

    a feedback determination step in which the controller uses the engine speed control error and determines a feedback control amount for feedback-controlling a clutch actuator,wherein the controller performs steps from the correction applying step to the feedback determination step repeatedly until the launch of the vehicle is completed and wherein a second correction amount required for the correction applying step at a time of the repeated performing of the steps is determined by a second correction amount determination step in which a previous correction amount is multiplied by a forgetting factor determined by reflecting a speed change amount of an input shaft of a transmission.

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