Hydraulic Manlift
 Issue
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- Following a technical upgrade, R&D dept discovers serious dynanamic instability problems with the aerial platform'
 Method
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- We model the entire hydraulic arm
- Our calculations predict the same phenomenon : We write the transfer functions
=> We identify the parameter causing instability
 Solution
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- Results correlated by simulation
- We propose a (minor) modification
- We elaborate design rules for the construction of hydraulic arms (to eradicate problems during future developments).
- 6 months of tests avoided
FR