Active control of large space antenna truss structures using the equivalent beam model

In this paper, an equivalent force method is proposed to solve the problem of using the equivalent beam model for the control design of the original truss structure. The main achievement is to convert the external forces acting on the original truss structure into the equivalent beam model to obtain the equivalent forces. Hence, the control force of the actuator in the original truss structure is obtained by the control design of the equivalent beam model, which makes the vibration of the original truss structure controlled. Finally, the numerical simulation arithmetic example shows that the control force acting on the equivalent model is different from the force acting on the original truss structure, further demonstrating the necessity and validity of the proposed method.