Hydraulic oil supplied from pumps, to an attachment actuator is controlled by attachment control valves ,. As the spacecraft travels along the trajectory, a desired line of thrust undergoes a substantial rotation in inertial space. The voltage measurement unit measures a voltage matrix of the battery set. The algorithm is square quadrature amplitude modulation independent so that it could be applied in the elastic optical systems. At least one dummy structure connects the top pad and the under layer to fasten the top pad and the interconnect pad.