Airplane front wing servo acting system and servo control method thereof

The invention belongs to a flight control technology and relates to an airplane front wing servo acting system and a servo control method thereof. The servo acting system comprises an electro-hydraulic combined steering engine (1), a spring pull rod (3), a support (2), a rocker arm (6), a pull rod (4), a distribution mechanism (5) and a hydraulic acting barrel (7), wherein the electro-hydraulic combined steering engine (1) is a hydraulic dual-redundancy and electric three-redundancy electro-hydraulic combined steering engine; the electro-hydraulic combined steering engine (1) is used for controlling a piston rod to output mechanical displacement with the corresponding size according to an input electric instruction signal; and the spring pull rod (3) comprises a spring, a lug ring connector, a lining, a bearing, a core rod and a shell. By virtue of the airplane front wing servo acting system, the researching period of the servo acting system is shortened and the working efficiency is improved; and meanwhile, the cost of the whole system is saved.