The invention discloses an electric power steering fuzzy aligning method. The method relates to the technical field of electric power steering, and comprises the following steps: S01, setting a power-assisted current threshold value of EPS, performing real-time integration on power-assisted current when the power-assisted current is increased, and performing real-time integration on return currentobtained in the previous period when the power-assisted current is smaller than the power-assisted current threshold value; S02, enabling an integral result obtained in the step S01 to be equivalentto a steering wheel angle, and obtaining a current return basic current and a return current through table look-up; S03, calibrating adjustment factors of left alignment and right alignment of the steering wheel, and correcting the alignment current obtained in the step S02 by using the adjustment factors; and S04, superposing the boosting current and the corrected return current in the step S03 into a target current to perform EPS current loop control, and repeating the steps S01 to S03. The electric power steering fuzzy aligning method can improve the aligning effect of the whole vehicle.

    一种电动助力转向模糊回正方法,涉及电动助力转向技术领域,该方法包括以下步骤:S01,设定EPS的助力电流阈值,当助力电流增加时,对助力电流进行实时积分,当助力电流小于助力电流阈值时,对上一周期获得的回正电流进行实时积分;S02,将步骤S01中得到的积分结果等效成方向盘角度,并通过查表得到当前的回正基础电流和回正电流;S03,标定方向盘左回正和右回正的调整因子,使用调整因子对步骤S02中得到的回正电流进行修正;S04,将助力电流以及步骤S03中修正后的回正电流叠加成目标电流进行EPS的电流环控制,重复步骤S01‑S03。本电动助力转向模糊回正方法可以改善整车回正效果。


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    Title :

    Electric power steering fuzzy aligning method


    Additional title:

    一种电动助力转向模糊回正方法


    Contributors:
    LIN LIANWEI (author) / JIAO JIUSHUN (author) / LYU YING (author) / HU JIANGAN (author)

    Publication date :

    2020-06-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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