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Space State & tf2ss Command Question

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Masoud Ghanbari
Masoud Ghanbari on 4 Jul 2012
Hi every helper
i have a set of 2 equations and i want to reach the ss equation.
Note: D means d/dt & D2 means derivative of second order (d/dt)^2
Equation are
(1) : m1.D2y1 + k1.y1 + b1.(Dy1-Dy2) + k2.(y1-y2) + mu1.N1.Dy1 = F
(2) : m2.D2y2 + b2.Dy2 + mu2.N2.Dy2 - k2.(y1-y2)= 0
equation belongs to a mass-damper-spring system .
the space state variables are
and X=y1-y2
How Should I reach to transfer function?
How Should I reach to ss?

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