Analysis and Optimization of Microvibration Isolation for Multiple Flywheel Systems of Spacecraft

This paper presents an innovative work on the optimum design of microvibration isolation for the multiple-flywheel system of spacecraft. A theoretical model is first developed to describe the coupled system, which consists of an multiple-flywheel system and a multi-axis isolator. The rotating wheels in multiple-flywheel system, which introduce gyroscopic effects, are modeled as rigid rotors supported by resilient isolation struts mounted on a fixed spacecraft. Next, the optimization problem of multiple-flywheel system isolation is formulated by a constrained nonlinear multi-objective function. The objective function is used to minimize the transmitted disturbances to the spacecraft and simultaneously obtain the most favorable modal characteristics for the integrated system of multiple-flywheel system and an isolator under the constraints of spacecraft application. The mass properties of multiple-flywheel system, stiffness coefficients and mounting configuration of isolation struts, which play important ro...

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