R&D (FilterCavity)
YuhangZhao - 18:21, Tuesday 06 October 2020 (2230)
Current setting of AA control loop filters and new open loop transfer function

The setting of AA loop is as follows:

 

Poles

Zeros

Gain

END_pit

0, 20(Q=1)

2(Q=1)

2

END_yaw

0, 20(Q=1)

2(Q=1)

20

INPUT_pit

0, 20(Q=1)

2(Q=1)

0.3

INPUT_yaw

0, 20(Q=1)

1.3(Q=1)

2

 

Corresponding filters are shown in attached figure 1 to 4.

Corresponding filters transfer functions are shown in the attached figures 1-4 (order: end_pit, end_yaw, input_pit, input_yaw).

With this loop, I also measured open-loop transfer functions. They are shown in attached figure 5-8 (order: end_pit, end_yaw, input_pit, input_yaw). They have unity gain frequency shown in the following table.

END_pit

0.64Hz

END_yaw

6.98Hz

INPUT_pit

0.17Hz

INPUT_yaw

0.43Hz

Images attached to this report
2230_20201006111839_aafilterendpit.png 2230_20201006111844_aafilterendyaw.png 2230_20201006111850_aafilterinputpit.png 2230_20201006111855_aafilterinputyaw.png 2230_20201006111855_aafilterinputyaw.png 2230_20201006112321_endpitgain2.png 2230_20201006112328_endyawgain20.png 2230_20201006112336_inputpitgain200.png 2230_20201006112343_inputyawgain2.png