Dual-motor-driven electric steering device and control method thereof

The invention relates to the technical field of automobile steering, and provides a dual-motor-driven electric steering device and a control method thereof. Comprising a torque and angle sensor, a bevel gear pair, a planetary cycloidal pin wheel speed reducer and a main and auxiliary dual-motor, the torque and angle sensor assembly is connected with the planetary cycloidal pin wheel speed reducer through a bevel gear pair; the planetary cycloidal-pin gear speed reducer is composed of a front-stage planetary gear speed reducing mechanism and a rear-stage cycloidal-pin gear speed reducing mechanism, the double motors are meshed with the front stage of the planetary gear speed reducer through a gear pair, and an output flange of the planetary cycloidal-pin gear speed reducer is fixedly connected with the rocker arm shaft. The control method is characterized in that the double motors carry out servo control on a target rotation angle, and the double motors carry out synchronous control. The method has the benefic