sensors
I've posted a few times and I appreciate the responses. I'm planning to launch a high altitude vehicle (rocket or glider) that is actively stabilized (not guided ;) using ardupilot. To be clear, this is a really small vehicle that will fly for a very short time above 100,000 feet and come down via a parachute. Its not a UAV.
I'm in the process now of building a gimbal motor mount similar to this one - http://www.criscaso.com/images%20exp%20rocketry/Casimiro%20elementi...
Mine will be smaller and lighter.
Assuming I have just the ardupilot main board and the 4 horizon sensors....
From my reading it seems like it will be reasonably easy to set ardupilot up in STABILIZE mode. I don't need or want any other functionality running.
Would this be done in the events.pde file?
I presume it will run just fine with no other boards or sensors attached.
Regarding calibration - I am guessing I am venturing into uncharted territory here but on the off chance anyone knows....
I'll do a calibration on the ground which I understand will be stored in memory. Three hours and 100,000 feet later. Any clue as to how this calibration will work? Frankly close is good enough for what I am doing.
I'm in the process now of building a gimbal motor mount similar to this one - http://www.criscaso.com/images%20exp%20rocketry/Casimiro%20elementi...
Mine will be smaller and lighter.
Assuming I have just the ardupilot main board and the 4 horizon sensors....
From my reading it seems like it will be reasonably easy to set ardupilot up in STABILIZE mode. I don't need or want any other functionality running.
Would this be done in the events.pde file?
I presume it will run just fine with no other boards or sensors attached.
Regarding calibration - I am guessing I am venturing into uncharted territory here but on the off chance anyone knows....
I'll do a calibration on the ground which I understand will be stored in memory. Three hours and 100,000 feet later. Any clue as to how this calibration will work? Frankly close is good enough for what I am doing.
Replies to This Discussion
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Permalink Reply by jasonshort on -
If this is a rocket, the IMU might not be able to withstand the G forces. An IR sensor would work fine however.
If you reworked the control loop you could get a much faster response than 50 hz.
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Permalink Reply by Donny on -
The gyros are subject to drift as well so I'll have to use IR sensors.
As for re-working the control loop; I'm looking to build a proof of concept first and would prefer to rework as little as possible. I do know moving the center of mass forward and further from the motor will allow slower response times. Think broom upside down balanced on your hand as opposed to the other way around.
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