toproper

PURPOSE

TOPROPER Create proper LTI models by applying low-pass filters

SYNOPSIS

function G = toproper(H, tau)

DESCRIPTION

TOPROPER Create proper LTI models by applying low-pass filters

  Usage: G = TOPROPER(H, tau)
  where  H   - a non-proper LTI system (with more zeros than poles),
         tau - low-pass filter time constant.

  Returns a ZPK object in form

                                      n
                    (      1        )
         G = H(s) * ( ------------- ),
                    ( 1 + (1/tau)*s )

  where n is the number of added poles until the system is proper.

CROSS-REFERENCE INFORMATION

This function calls:

tf TF Return Z(s) of the fractance circuit in form of a transfer function
zpk ZPK Return Z(s) of the fractance circuit in form of a zero-pole-gain model

This function is called by:

fpid_optimfun FPID_OPTIMFUN Optimal FPID Design helper function
fpid_optimize FPID_OPTIMIZE Obtain optimized settings for fractional PID controller
fpid_optimize_sim FPID_OPTIMIZE_SIM Simulate a fractional PID based control system using Simulink.
fpid FPID Fractional-order PID controller design tool.
fpid_optim FPID_OPTIM Fractional-order PID optimization tool.
impid IMPID Implement a PID controller
fracidfun FRACIDFUN Compute fractional time-domain identification cost function.