Eleonora (remotely) and Yuhang

It was suspected that green transmission power changes due to different green beam hitting position on transmission camera (elog2220). Therefore, we decide to fix the green transmission direction. Eleonora has already designed the feedback loop to control the green transmission direction. So I just used that loop.

1. I tried to close the loop with gain of 1. Then I get result of attached figure 1.

From this test, we could see that the loop works. But it seems the gain is too small.

2. I increase the gain to 50 for pitch and 10 for yaw. Then I get result of attached figure 2 and 3.

We could see that green transmission is kept stably.

But from the last entry, it seems to be better to feedback to PR.