Plain bearing rotor system stability distinguishing and controlling technology
A system stability, sliding bearing technology, applied in the direction of mechanical bearing testing, measuring devices, instruments, etc., can solve equipment damage of rotating machinery, unable to diagnose and control the running stability of sliding bearing rotor system, and sliding bearing rotor whirling characteristics The relationship with stability is not clear, etc.
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[0017] The eddy coupling excitation analysis method is to analyze and evaluate the resonance of a certain excitation frequency of the system, and the nonlinear coupling vibration displacement limit cycle analysis method is to analyze and evaluate the safety of the system operating state and process. Therefore, vortex coupling excitation is only a condition for system instability, and the coupled vibration causes the eccentricity (ε) of rotor 1 to be greater than the engineering allowable value ε max The result is the basis for judging the instability of the system.
[0018] 1. The analysis method of eddy coupling excitation is how to change the external disturbance parameters of the system (W i ), structural parameters (L, D, λ), physical parameters (μ) and motion parameters (ω 0 , ε), to control the whirl frequency of the journal to effectively avoid the natural frequency of the rotor 1 and the related load excitation frequency area. The corresponding governing equation...
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