First, you will apply sinusoidal inputs to the motor, adjusting the frequency manually, and measuring the output amplitude and phase.
Set the function generator to sinusoidal waveform. | |
Set the frequency to 0.2Hz | |
Set the time scale on the oscilloscope so that one or two full periods of the sinusoid are on the screen. | |
Use the cursors to measure the output amplitude. | |
Use the time cursors to measure the time difference between a valley of the input sinusoid and the closest valley of the output sinusoid. | |
Print this screen. |
Take the data in the following (just amplitude and delay), adjusting the input frequency and the time scale on the oscilloscope as appropriate. Print at least one more screen at a higher frequency, such as 10 or 20Hz as shown below.
Freq. | Output Amplitude |
Delay |
|
Phase | ||||||
---|---|---|---|---|---|---|---|---|---|---|
0.2Hz | ||||||||||
0.3Hz | ||||||||||
0.5Hz | ||||||||||
1Hz | ||||||||||
2Hz | ||||||||||
3Hz | ||||||||||
5Hz | ||||||||||
10Hz | ||||||||||
20Hz | ||||||||||
30Hz | ||||||||||
50Hz | ||||||||||
100Hz | ||||||||||
200Hz |
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