This invention discloses an electric
patient transfer device and control method with
human body transfer and position change capabilities, belonging to the field of medical and
nursing transport equipment technology. The device includes a movable base, a
bed lifting column, a base frame, a
bed surface that slides along its width, a
bed surface sliding center of gravity transfer support module, a sliding
fabric structure, and a center of gravity stability
control system. The bed surface is formed by hinged legboards, hipboards, and backboards, and can switch between a
lying position and a
wheelchair position. When the bed surface moves outward, the auxiliary feet sink to the ground along with the sliding seat through guide grooves, lifting wheels, and vertical constraints; when the bed surface returns to the center, it rises off the ground. The control method performs effective support confirmation, support domain switching,
stability margin judgment, and abnormal retreat control based on the bed surface side sliding, auxiliary foot grounding and support force, vehicle posture, bed height, bed surface locking, and patient off-center loading status, thereby improving the center of gravity stability during
patient transfer, position change, and short-distance transport.