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. This sandwich should be tighter than this, right?Īm I over thinking this, or will the PP adequately compensate for the difference? The last thing I want is to pull this again, obviously.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. ![]() ![]() Typically such a gap would be a worry sign that may result in a weak pedal or slipping clutch, due to the clutch & PP needing to push and sustain hold 1.5mm further than typical. With the stock clutch and stock flywheel:Īre the PP mounting points on the TTV 1.5mm too high? I'll use the stock clutch to demonstrate, as it highlights the concern clearly. This is due to their being a 1.5mm difference in offset from the friction surface and PP mating surface vs the stock flywheel. ![]() When sandwiching the entire assembly of TTV Flywheel, FX400 Disk and CM Pressure Plate, there is an evident 1.5mm gap where one would typically expect a clutch and PP mounting point to be relatively flush. We've measured & checked numerous times, but I wouldn't mind some input. Figured I'd post this here rather than in my build thread, as I need some confirmation quickly to avoid holding up the engine going back in.
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