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anorlunda said:To determine if the plots are real or just measurement noise, one needs much more detail than you provided.
The graph text suggests nominal response when unloaded, compared to response with a maximum load.skyhj105 said:I `ll tell you more detail. The value what this plot measure is x-axis frequency response for nominal and payload.
The simple answer is that you should stay well below the first peak if you want good closed loop control.skyhj105 said:I think that first peak of the graph represent a resonance frequeny but i don`t know some peaks which are located after first peak.
Is it a just noise? or some other?
MRFMengineer said:The simple answer is that you should stay well below the first peak if you want good closed loop control.
The other peaks are other system modes probably, transverse modes etc...
A Bode plot is a graphical representation of a system's frequency response. It shows how the magnitude and phase of a system's output vary with frequency.
To interpret a Bode plot, you need to understand the two axes. The horizontal axis represents frequency, usually in logarithmic scale. The vertical axis represents either the magnitude or phase of the system's output, depending on which plot you are looking at. The plot will show how these values change with frequency, allowing you to identify the system's frequency response characteristics.
A Bode plot can provide information about a system's gain, phase shift, bandwidth, and stability. It can also help identify frequency domains where the system is most sensitive or least sensitive to input signals.
Bode plots are commonly used in fields such as control systems, signal processing, and electrical engineering. They can help you analyze and design systems, identify system parameters, and compare different systems or components.
To create a Bode plot, you need to have the transfer function or frequency response data of the system. You can then plot the magnitude and phase values at different frequencies using software such as MATLAB or by hand. Alternatively, you can use a frequency analyzer to measure the system's frequency response and plot the data on a Bode plot.