The invention discloses an electric power-assisted brake system control method which is used for an electric power-assisted brake system and comprises the steps that first phase current and second phase current collected from a power-assisted motor are obtained; in at least one phase current amplitude window period, calculating a phase current amplitude ratio between the first phase current and the second phase current, and judging whether the phase current amplitude ratio is within a preset amplitude ratio threshold range or not; if the phase current amplitude ratio exceeds the amplitude ratio threshold range, generating a fault signal; and controlling the power-assisted motor to stop working according to the fault signal. According to the invention, by calculating and judging the amplitude ratio of the two-phase current of the power-assisted motor collected in the sampling circuit of the electric power-assisted brake system, when the resistance value of the sampling resistor deviates, the fault can be identified and reported in time, and then the brake controller is notified to cut off the power assistance of the motor, so that the power assistance of the brake controller is prevented from being disordered.
本发明公开了一种电动助力刹车系统控制方法,用于电动助力刹车系统,电动助力刹车系统控制方法包括:获取从助力电机采集到的第一相电流和第二相电流;在至少一个相电流幅值窗口期间,计算第一相电流和第二相电流之间的相电流幅值比并判断相电流幅值比是否处于预设的幅值比阈值范围内;如果相电流幅值比超出幅值比阈值范围,生成故障信号;根据故障信号控制助力电机停止工作。本发明通过计算并判断电动助力刹车系统的采样电路中采集到的助力电机的其中两相电流的幅值比,在采样电阻发生阻值偏移时,能够及时识别并且上报故障,然后通知刹车控制器切断电机助力,防止刹车控制器错乱助力。
Electric power-assisted brake system control method, electric power-assisted brake system and automobile
一种电动助力刹车系统控制方法、电动助力刹车系统及汽车
2022-11-11
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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