| 摘要 |
The invention relates to an electromechanical power steering system for a motor vehicle, comprising an electric motor (5) having a stator (9), which is fitted with at least two electrical winding sets, and having a rotor (8), which is fitted with permanent magnets, which electric motor (5) assists the steering movement, which is introduced by a motor (5) car driver, wherein a main control unit (701, 703) determines a motor (5) current prespecification on the basis of the steering movement, which motor (5) current prespecification is intended to be output to the electrical winding sets, and comprising at least one power control unit (750) which provides the motor (5) current prespecification, which is determined in the main control unit (701, 703), and feeds the said motor (5) current prespecification to the electrical winding sets, wherein, according to the invention, for each of the winding sets, at least one driver control system (702) is provided, wherein all driver control systems (702) and the main control unit (701, 703) each have a microcontroller and are combined to form one assembly, and one power driver (750) which is connected to one of the driver control systems (702) is provided, wherein at least two power drivers (750) are arranged in a power control unit (751), and each power driver (750) is designed as a half-bridge with power semiconductor switches. |
