Unmanned steel grabbing machine motion steering control method and system

The invention provides a motion steering control method and system for an unmanned steel grabbing machine, and the method comprises the steps: obtaining the real-time positioning information of the steel grabbing machine, determining the position coordinates of the steel grabbing machine at a current time node according to the real-time positioning information, and enabling the steel grabbing machine to be a crawler-type steel grabbing machine; the instantaneous linear speeds of a left crawler belt and a right crawler belt of the steel grabbing machine at the current time node are obtained, a steel grabbing machine motion model is established according to the instantaneous linear speeds and the position coordinates, and the pose state of the steel grabbing machine at the next time node is determined according to the steel grabbing machine motion model; according to the initial position and the target position of the steel grabbing machine, motion trail planning is conducted, and a set of motion trail point se