The invention discloses a method for making stability control criterions of an electronic stability control system of a vehicle, and belongs to the field of dynamics and control of vehicle systems. The method comprises the following steps of: establishing a theoretical model needed by the stability control criterions; deploying a longitudinal acceleration sensor; acquiring parameters through an ESC system sensor; in every sampling cycle of an ESC system, if a key balance point of the ESC system, which is obtained through calculation, has stable focus characteristics or stable node characteristics, obtaining the conclusion that the dynamic system equation of the vehicle in the sampling cycle is stable, and following the judgment conclusion of current criterions by the ESC system; and if the key balance point of a vehicle dynamic model (1), which is obtained through calculation, has saddle point characteristics, obtaining the conclusion that the dynamic system equation of the vehicle in the sampling cycle is unstable and the vehicle is in the dangerous working condition that a rear axle slides, and triggering the ESC system so as to perform stability control on the vehicle. The method has the advantages that the limitation of conventional criterions of the ESC system for judging the specific working conditions is overcome, so that the time is saved for the stability control, and the active safety of the vehicle is further improved.
Method for making stability control criterions of electronic stability control system of vehicle
2016-01-27
Patent
Electronic Resource
English
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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