Full-redundancy power assisting system of automobile steering engine

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Full-redundancy power assisting system of automobile steering engine

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MA HONGSHUN / LI SHAN / HUA DANDAN

The invention relates to the technical field of steering systems, in particular to a full-redundancy power assisting system of an automobile steering engine. A full-redundancy power assisting system of an automobile steering engine comprises a main control system and an auxiliary control system and is characterized in that the main control system and the auxiliary control system are consistent in structure, and the main control system comprises a main chip power source, a main inductor, a main power source chip, a main control unit, a main pre-drive chip, a main capacitor, a main three-phase bridge and a main phase separator. According to the main control unit, a main chip power supply passes through a filter circuit composed of a main inductor and a main capacitor and then supplies power to the whole main control system through a 12V direct-current power supply, a main power supply chip is responsible for distributing and managing voltage input of all components of the main control system, and signals comprehensively received by the main control unit are responsible for coordinating assisting power output of a steering system main circuit. And the main pre-driving chip carries out power amplification, and then the main three-phase bridge drives the motor through the main phase separator. Compared with the prior art, it is ensured that the automobile steering system meets the highest function safety level.

本发明涉及转向系统技术领域，具体地说是一种汽车转向机全冗余助力系统。一种汽车转向机全冗余助力系统，包括主控制系统、辅控制系统，其特征在于：主控制系统与辅控制系统的结构一致，主控制系统包括主芯片电源、主电感、主电源芯片、主控制单元、主预驱芯片、主电容、主三相桥、主相分离器，主控制单元由主芯片电源经过主电感和主电容组成的滤波电路之后，通过12V直流电源给整个主控制系统供电，主电源芯片负责分配和管理主控制系统各元器件的电压输入，主控制单元综合接收的信号负责协调转向系统主路的助力输出，通过主预驱芯片进行功率放大后由主三相桥经过主相分离器驱动电机。同现有技术相比，确保汽车转向系统满足最高功能安全级别。