The invention discloses an air brake system fault detection method based on an analysis model. The method includes the following concrete steps that the input and output mathematical analysis model of a given air brake system is established; the mathematical relation between a fault parameter, namely, push rod displacement and a system output quantity, namely, brake chamber air pressure is obtained; an interval of contact pressure Pct is determined; the interval to which the contact pressure Pct belongs is subdivided according to a certain step length to obtain an element interval equal step length, wherein elements form a set of brake chamber air pressure values; the brake chamber air pressure values corresponding to the elements in the set are obtained according to the input and outlet mathematical analysis model of a brake chamber; accordingly, the push rod displacement value is worked out through estimation. According to the method, the fault-free model is established for the air brake system, and the fault parameter, namely, the push rod displacement, of the air brake system is established according to the relation between the brake chamber output pressure and the push rod displacement in the model.
Air brake system fault detection method based on analysis model
2015-07-01
Patent
Elektronische Ressource
Englisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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