Control system and method for separation of upper stage and lower stage of aircraft

The invention discloses a control system and method for separation of an upper stage and a lower stage of an aircraft, and relates to the technical field of spaceflight, the control system comprises a lower stage servo control assembly and a controller, and the lower stage servo control assembly is used for driving a lower stage steering engine to rotate; the controller is connected with the lower-level servo control assembly and is configured to judge whether the aircraft meets an upper-level and lower-level separation condition or not; if yes, a lower-stage servo control assembly is controlled to drive a lower-stage steering engine to rotate to the preset offset and keep unchanged; wherein the preset offset is used for increasing the flight resistance of the lower stage; and a locking assembly between the upper stage and the lower stage of the aircraft is controlled to be unlocked, so that the upper stage and the lower stage of the aircraft are separated. An auxiliary separation power device in a traditiona