Analysis of Parameter Perturbation Characteristics of Gyrowheel

As a new type of inertial actuator, gyrowheel can simultaneously perform the attitude measurement and control functions of micro-spacecraft. This paper studies the influence of parameter perturbation on the frequency characteristics aimed at the tilting dynamics model of gyrowheel. The complex coefficients transfer function is established by using the linearized zero-position model. The pole changes caused by rotational speed, damping and stiffness are analyzed. At the same time, the double-frequency Bode diagram is drawn, and the dynamic and static control indexes of GW under the perturbation of each parameter are quantitatively described.