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        8,523 crowxe+1 5.7 years ago@AnotherFireFox I don't really know if I'm adopting the essence of PID in my programs, maybe I am. On first phase I set the control value to distance ÷ 4000 , that's why you see the gradual reduction in fins angles. Then second phase I kinda take a snap shot of lateral speed and distance and try to maintain a lateral speed relative to the distance , the control value change by how much the lateral speed is off from the designated ratio. I used a very similar technique for docking but of course was more reliable without the messy air dynamics 
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        9,685 AnotherFireFox5.7 years agoSo it doesn't seem like PID control. There is no need for complex control system when it can be achieved by simple system, for sure. Great job! 
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        9,685 AnotherFireFox+1 5.7 years ago@crowxe There are some people did it manually but that would certainly need insane amount of focus and training haha 
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@RussianElonHusk
here it is, https://www.simplerockets.com/c/738P21/Guided-Landing2
curently handed over to SmurfResearchX and he's improving it