karla

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Re: Cliff Diving PID Setting
« Reply #60 on: May 26, 2018, 03:16:31 am »

jcg1541

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Re: Cliff Diving PID Setting
« Reply #61 on: June 01, 2018, 05:29:17 am »
Sorry I have been distracted by the search for abandoned tall buildings. I am sure I would have dived many decaying skyscrapers of Detroit if I lived there. Here in the north east, I found the rusting old Ramington Arms munition factory with a tall smokestack. See attached photo. I passed by it over the highway just this memorial weekend. Guess I will dive it in the next few weeks.

karla

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Re: Cliff Diving PID Setting
« Reply #62 on: June 01, 2018, 10:14:33 am »
 :P

jcg1541

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Re: Cliff Diving PID Setting
« Reply #63 on: July 01, 2018, 05:25:12 pm »
Just a question: are you using TPS (Stabilization->Advanced->ThrustPIDScaling)?  Mathematically at least, whenever you double the head speed, you should halve the PIDs, etc.  So if you are using a throttle controlled variable head speed, this will keep the PIDs in sync with the head speed.
That was an excellent question. I have tried it today, and the result is a dramatic improvement. Previously either the ascending was very slow or too much vibration to be shown on video. Now the punch up is forceful, yet no oscillation anywhere in flipping or diving. The ascending is 28 seconds, then the 9 second dive follows,

.  And the extreme scaling down is between thrust 75% toward 100% . The flipping and diving thrust is below and right adjacent to 75%.
The curves are attached in pictures.
« Last Edit: July 03, 2018, 03:14:53 pm by jcg1541 »

jcg1541

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Re: Cliff Diving PID Setting
« Reply #64 on: September 16, 2018, 01:47:28 pm »
This is a tribute to Boston Marathon spirit. We lost citizens, and we lost limbs. But our spirit is not hurt one bit.
I have the PIDs for quadcopter-like diving now,
http://nocomputerbutphone.blogspot.com/2018/09/converged-iot-drone-build-notes.html
. FAA rule is that if you are within 400 feet next to a structure, your altitude limit is based off the top tip of the structure. The dive is about 600 feet from the top of the tower to the church spire. The following video will be deleted after being viewed by this forum.
« Last Edit: September 26, 2018, 02:08:11 pm by jcg1541 »

karla

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Re: Cliff Diving PID Setting
« Reply #65 on: September 17, 2018, 11:30:54 am »
Well done