Simulink®

Transfer Fcn Lead or Lag - Implement discrete-time lead or lag compensator

Library

Discrete

Description

The Transfer Fcn Lead or Lag block implements a discrete-time lead or lag compensator of the input. The instantaneous gain of the compensator is one, and the DC gain is equal to (1-z)/(1-p), where z is the zero and p is the pole of the compensator.

The block implements a lead compensator when 0 < z < p < 1, and implements a lag compensator when 0 < p < z < 1.

Data Type Support

The Transfer Fcn Lead or Lag block accepts signals of any data type supported by Simulink^® software, including fixed-point data types.

Parameters and Dialog Box

Pole of compensator (in Z plane)

Set the pole.

Zero of compensator (in Z plane)

Set the zero.

Initial condition for previous output

Set the initial condition for the previous output.

Initial condition for previous input

Set the initial condition for the previous input.

Round toward

Rounding mode for the fixed-point output. For more information, see Rounding in the Simulink^® Fixed Point™ User's Guide.

Saturate to max or min when overflows occur

If selected, fixed-point overflows saturate.

Characteristics

Transfer Fcn First Order

Transfer Fcn Real Zero