The invention discloses a double-preview multi-mode
steering control method for a multi-axis distributed
electric drive vehicle, which comprises the following steps of: calculating an expected vehicle speed from two aspects of curvature
adaptation and angle
adaptation by adopting two strategies, and determining the expected vehicle speed by utilizing a double-target vehicle speed
decision model; obtaining an ideal vehicle coordinate and an ideal navigation angle by using an existing path planning
algorithm; inputting the expected vehicle speed, the ideal vehicle coordinates and the ideal navigation angle into a dynamic double-preview-point
algorithm to obtain a
steering angle and a driving force; a steering mode is dynamically selected according to road conditions or instructions,
steering angle control is executed according to the steering mode, and the steering mode comprises a steering mode around a rear axle, a center steering mode and a crab-shaped steering mode; and performs control based on the driving force. According to the method, the transverse error of the rear axle in the long-body vehicle is controlled within an extremely
small range, the
turning radius is reduced, the automatic driving robustness and safety of a large transport vehicle in complex scenes such as narrow roads and continuous curves are remarkably improved, and the method is suitable for six-axle and more than six-axle distributed electrically-driven heavy-load vehicles; the technical problems that the head and the
tail are difficult to consider during turning of the large transport vehicle and the
trafficability is poor are effectively solved.