Chapter 4 To compare the experimental and simulation analysis
4.2 Experimental data
direct current of power for the motor B is recorded. First, we measure the direct current with AD/DA card when the planetary ball mill machine runs
with no the hammer. Second, we measure the direct current with AD/DA
a v
to the equation 3-7 and equation 3-8. The teeth of the planetary gear is fifty.
The te
card when the planetary ball mill machine runs with the hammer. And, the record need 10000 material. The record which is data of the direct current transforms into frequency with FFT. At the same time, we use a single-lens reflex camera to take the louse of LED which is set up the planetary ball mill machine.
In the experiment, we must control the angular velocity of the arm nd the angular velocity of the cup. So, we must control the angular elocity of the motor A and the angular velocity of the motor B. According
eth of the sun gear is sixty-four. So, it is angular velocity of the cup.
) angular velocity of the motor A ocity of the motor B
ly.
(4.2)
and the angular vel equab
4.2.1 Finite swing motion
When ωA =191.022 rpm and ωP = 286.533 rpm , the direct current of the power for the motor B is recorded. We must record 10000
ata of direct current for the power every 10 ms. First, we measure the r the motor B when the planetary ball mill machine with no the hammer. Such as Figure 4.22. Second, we measure the d
direct current of the power fo
direct current of the power for the mot planetary ball mill machine with the hammer. Such as Figure 4.23. In Figure 4.22 and Figure 4.23, we can find much noise. The noise is produced by the machine which can produce shake when the machine runs. The record which is with no the hammer is transforming into frequency with FFT. Such as Figure 4.24. The record which is with the hammer is transforming into frequency with FFT.
Such as Figure 4.25. Especially, there are the low frequency in the Figure 4.24 and Figure 4.25. If the machine is assembled instability, the machine produces low frequency. So, the low frequency doesn’t influence the direct current of the power for the motor B. And, we can use the Figure 4.24 to compare with Figure 4.25. We find difference in frequency between the Figure 4.24 and Figure 4.25. We must use the different frequency compare with simulation data and check the different frequency. If the different frequency conform to the simulation data, we can determine the specific of the motion of the hammer.
At the same time, we use a single-lens reflex camera to take the louse of the LED which is set up top of the hammer, the side of the arm and the side of the cup. Such as Figure 4.26. The locus of experiment is produce by the single-lens reflex camera in 0.5 second. We put the top view of the planetary ball mill machine
or B when the
on the Figure 4.26. The biggest outer circle is the ar
of the hammer is the finite swing motion form the louse of the experimental m. The second largest is the top of the inside wall for the cup. The minimum circle is the down of the inside wall for the cup. Such as Figure 4.27. In Figure 4.27, we can find the louse of the LED for the hammer to touch the minimum circle. And, we can find the louse of the LED for the hammer to run the leave half of the cup. So, we can determine the motion
data..
4.2.2 Continuous rotation motion
A =71.633 =573.066
When ω rpm and ωP rpm, the direct current
current for the power every 10 ms. First, we measure the direct current of the power for the motor B when the planetary ball mill machine with no the hammer. Such as Figure 4.28. Second, we measure the direct current of the power for the motor B when the planetary ball mill
igure 4.29. In
of the power for the motor B is recorded. We must record 10000 data of direct
machine with the hammer. Such as F Figure 4.28 and Figure 4.29, we can find much noise. The noise is produced by the machine which will produce shake when the machine run. The recorded which is with no the hammer is transforming into frequency with FFT. Such as Figure 4.30.
The record which is with the hammer is transforming into frequency with FFT. Such as Figure 4.31. Especially, there are the low frequency in the Figure 4.30 and Figure 4.31. If the machine is assembled instability, the machine produces low frequency. So, the low frequency doesn’t influence the direct current of the power for the motor B. And, we can use the Figure 4.30 to compare with Figure 4.31. We find difference in frequency between the Figure 4.30 and Figure 4.31. We must use the different frequency compare with simulation data and check the different frequency. If the different frequency conform to the simulation data, we can determine the specific of the motion of the hammer.
At the same time, we use a single-lens reflex camera to take the louse of LED which is set up top of the hammer、the side of the arm and the side
of the cup. Such as Figure 4.32. The locus of experiment is produce by the single-lens reflex camera in 0.5 second. We put the top view of the planetary ball mill machine on the Figure 4.32. The biggest outer circle is the arm. The second largest circle is the top of the inside wall for the cup.
The m
In
inimum circle is the down of the inside wall for the cup. Such as Figure 4.33. In Figure 4.33, we can find the louse of the LED for the hammer to be not touch the minimum circle. And, we can find the louse of the LED for the hammer to run the first half of the cup. So, we can determine the motion of the hammer is the continuous rotation motion form the louse of the experimental data.