Creating Bode Plot in MATLAB - Tieske90

[Tieske90]

Hi everybody,

I did a few measurements at a printer.
I have a signal that i put in the printer that gives the printerhead a speed.

I have put a sinus on the printerhead, and did this at different frequencies with the same signal strength (20 to 500 Hz, with steps of 15 Hz).
I want to make a bodeplot now with these results of the amplitudes.
But what will there be on the y-axis? I know it has a factor of 20log(...), so it's in dB.


Thanks in advance,

Tieske90

 

[berkeman]

Hi everybody,

I did a few measurements at a printer.
I have a signal that i put in the printer that gives the printerhead a speed.

I have put a sinus on the printerhead, and did this at different frequencies with the same signal strength (20 to 500 Hz, with steps of 15 Hz).
I want to make a bodeplot now with these results of the amplitudes.
But what will there be on the y-axis? I know it has a factor of 20log(...), so it's in dB.


Thanks in advance,

Tieske90

Plot the peak-to-peak movement of the printhead. Use log-log axes, so you will have numbers like 1cm, 0.1cm, 0.01cm on the vertical axis, and numbers like 10Hz, 100Hz, 1000Hz on the horizontal axis.