![]() We got the flywheel vibration isolation system waterfall plot as well by testing the flywheel isolation system using multi component device. The relationship between I-O disturbance force and velocity vector is described by the characteristic transfer matrix in the subsystem of the flywheel vibration isolation.Īccording to the structure parameters and the micro vibration characteristics of a certain type of flywheel, the model is simulated to obtain the output vibration power waterfall plot. In this paper, the dynamic model of the three degrees coupled vibration isolation system about the flywheel micro vibration excitation, multi-elastic support and basic structure is established on the admittance method and partition subsystem. Modeling of the transmission characteristics of the flywheel vibration isolator is not carried out. The above literatures on the micro vibration of the flywheel are mainly integrated modeling. By considering the flywheel and the platform as an integral system with gyroscopic effects, Wei Z., Li D., Luo Q., et al developed an equivalent dynamic model and verified through eigenvalue and frequency response analysis. ![]() The system was modeled as a four-rollers-belt with a stepper motor based on exist apparatus. Yu J., Yamaura H., Oishi T., et al focused on vibrations caused by loading torque of printing mediums when they were delivered into the machinery. addressed the dynamic modeling and analysis of the micro-vibration isolation of flywheel assemblies. They provide system level comprehensive performance evaluation and error analysis methods, which have been successfully applied to the development of high resolution space telescope JWST, SIM and TPF. Massachusetts Institute of Technology established the Disturbance Optics Controls Structures. United States Air Jet Propulsion Laboratory established the Integrated Modeling of Optical Systems. NASA established a model of Integrated Modeling Environment. Many research institutes have made a research on the integrated modeling system in the world. And a system level dynamic I-O mathematical model, which can fully reflect the influence of various coupling effects on the key performance indicators of the spacecraft, is finally formed. It refers to that on the basis of the structure, control and load system modeling, according to the physical connection of the micro vibration in the transmission path of each subsystem, the system model is integrated. ![]() Integrated modeling technology is an effective analysis method. ![]() Micro vibration on the influence of the payload is more complex, which involves structure, control and optical system. Flywheel as attitude control and attitude stabilization equipment in space telescope, it will generate additional disturbance force and torque when spins on orbit, which will affect the accuracy, stability, and imaging quality of the telescope. The elastic support coupled vibration transfer matrix can solve the problem of the sub structure integration and merging, and integrated modeling and analysis in active and passive support system.Īttitude control actuator is the core technology of the precision and high stability space telescope. The sub structure analysis method effectively avoids the complexity of the solution of the state vector of the sub structure coupling interface. Model simulation and the flywheel vibration isolation system test results show that the two spectra are consistent basically in the frequency components, the form of vortex frequency curve and the change of amplitude, which indicates that the key factors of the vibration characteristics of the flywheel vibration isolation system are accurate and the theoretical analysis is correct. The dynamic model of the three degrees coupled vibration isolation system about the flywheel micro vibration excitation, multi elastic support and basic structure is established on the admittance method and partition subsystem. The elastic support coupling vibration transfer matrix of the vibration isolator is derived, and the vibration transfer characteristics of the vibration isolation system are studied. ![]() Studied on the flywheel micro vibration isolator of a space telescope, the relationship between input and output (I-O) disturbance force and velocity vector is described by the characteristic transfer matrix in the subsystem of the flywheel vibration isolation. ![]()
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