Automatic Control of a Jetpack - ME461 Presentation Final

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Automatic Control of a JetPack for ME461 - Automatic Control @ The University of Michigan - Ann Arbor
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  ME461 FALL 2008AUTOMATIC CONTROLJETPACK CONTROL Team Space Cadets Ryan RudySudeepPillaiVincent Wei Jie LamWisit Jirattigalachote  Motivation & Control Problem  Motivation  Intriguing dynamics of a jetpack being propelled into the air  Very beneficial in firefighting and rescuing in tall buildings  Control Problem  Control the height of a person propelled by a jetpack in onedimension (upwards)  Input would be the different thrust nozzle areas  Control Goals  Overall  Jetpack speed and acceleration less than 40m/s and 2grespectively  Attain vertical height of 300m within 30s  Fast response for smaller changes in height  Account for disturbances  Closed Loop Control  Overshoot  Less than 10% while ascending  Less than 1m while descending  Sufficiently small steady-state error (within 1%)   Free Body Analysis  Assumptions  Constant mass flow rate  Simplified fluid dynamics  Equation of motion System Model F  drag F  thrust  W = mg +X  =(  )  − (  )  + (   − 101325+9.1  ) ∙  − 2 −     =12  2       ℎ =(  )  − (  )  + (   − 101325 +9.1  ) ∙   
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