Intelligent automobile brake system wheel cylinder pressure control method and device

The invention relates to an intelligent automobile brake system wheel cylinder pressure control method and device, and belongs to the technical field of intelligent automobile brake-by-wire, and the method comprises the following steps that a linear electromagnetic valve is used as a pressure increa...

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Bibliographische Detailangaben
Hauptverfasser:	WU HONGCHAO, NING QIANJIA, CHENG KEHAN, FENG YIXUAN, MENG YOUMING, ZHANG HUANHUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to an intelligent automobile brake system wheel cylinder pressure control method and device, and belongs to the technical field of intelligent automobile brake-by-wire, and the method comprises the following steps that a linear electromagnetic valve is used as a pressure increasing and reducing valve of an intelligent automobile brake system, and the linear electromagnetic valve uses a PWM signal as an input control signal; constructing a dynamic model of the linear electromagnetic valve, wherein the dynamic model comprises an electromagnetic subsystem model, a mechanical subsystem model and a fluid subsystem model; based on a dynamic model of the linear electromagnetic valve, determining the pressure increasing rate and the pressure reducing rate of the electromagnetic valve under different duty ratios of PWM signals, and constructing a relation table of electromagnetic valve coil current and wheel cylinder pressure change; and feedforward control over the pressure of the wheel cylinder