TRAY EXTENSION POSITIONING METHOD AND SYSTEM

A tray extension positioning method and system, the tray extension positioning method comprising: acquiring a first detection state of a first sensor (31) and a second detection state of a second sensor (32); determining the first detection state and the second detection state; if the first detection state is that a first distance signal is detected and the second detection state is that a second distance signal is not detected, driving a tray to rotate and move along a rotational direction; if the first detection state is that the first distance signal is not detected and the second detection state is that the second distance signal is detected, driving the tray to rotate and move along a counter-rotational direction opposite to the clockwise direction. The present tray extension positioning method and system may determine the distances between a first position and second position of the tray and a target, thereby determining whether the tray is aligned with the target; if so, the tray may continue to move in a straight line; if not, the tray may rotate until aligned, thereby avoiding power switching failure.