The invention relates to an
attitude control thruster
layout optimization method for a combined
spacecraft and belongs to the technical field of
satellite attitude control. According to the method, firstly, a thruster is obliquely mounted; secondly, a
universal joint with two freedoms is additionally mounted at a joint portion of the thruster; thirdly, a thruster thrust
distribution model is designed under constraints of minimum fuel consumption and a
universal joint rotation angle according to a desired
control torque; lastly, according to an attitude angle and attitude angle speed change fed back by a sensor, the opening / closing and blowing duration of the thruster is controlled through a
phase plane control method. Rapid attitude maneuvering of the
spacecraft is realized, fuel consumption is reduced, and a complete
control circuit is formed. Through the method, a blowing direction of the thruster is driven to change on the basis of rotation of the
universal joint, a problem of unstable control caused by large-scale
mass center offset because of rendezvous and docking is effectively solved; fuel consumption can be reduced, and on-
orbit service life of the thruster is prolonged.