The final improvement - to optimize the noise, you must first optimize the vibration
To optimize the noise, the vibration must be optimized first. According to the calculation formula of the vibration amplitude, the vibration amplitude can be suppressed by reducing the excitation force, increasing the quality of the end cap, and increasing the damping. Finally, the predecessor chose to increase the damping method to optimize, reducing the overall noise by 9.72dB.
in conclusion
To sum up, the white box black box method is actually a combination of theoretical analysis - working condition test - model simulation comprehensive application.
Through white box analysis, we understand the level and characteristics of the motor design, and have a qualitative understanding of the harmonics that the motor may cause noise.
Through the black box test, the motor has a complete understanding of the noise characteristics under different working conditions, and can lock those exceptionally abnormal working conditions.
Through model simulation, we can accurately predict the vibration response and noise characteristics of various parts of the motor, and determine which electromagnetic forces cause these abnormal vibrations. This makes it possible to lock the optimization object and give the best optimization strategy.
The style is easy to learn, and the internal strength is difficult to practice. The theory is not sophisticated, the foundation is not solid, it is just a flower and a fist. Therefore, after opening our eyes, we still need to calm down and apply our thoughts in our work to become our own things.
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