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LinearSystems.StateSpaceToTransferFun Function
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Convert transfer function from state-space to numerator-denominator form.

Pascal
procedure StateSpaceToTransferFun(const num: TVec; const den: TVec; const A: TMtx; const B: TVec; const C: TVec; const D: Double);
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Description

Convert a transfer function defined in state space presentation of the real valued A matrix, B,C vectors and D value in to its numerator Num and denominator Den form. State space system is related to its numerator/denominator representation via the following relation: 

          num(s)
  H(s) = -------- = C*(s*I-A)^(-1)*B + D
          den(s)

  dx/dt = Ax + Bu
  y     = Cx + Du

  x - system input
  y - system output
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