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Transfer Fcn Direct Form II Time Varying - Implement time varying Direct Form II realization of transfer function

Library

Additional Math & Discrete / Additional Discrete

Description

The Transfer Fcn Direct Form II Time Varying block implements a Direct Form II realization of the specified transfer function. The block supports only single input-single output (SISO) transfer functions.

The input signal labeled Den No Lead contains the denominator coefficients of the transfer function. The full denominator has a leading coefficient of one, but it is excluded from the input signal. For example, a denominator of [1 -1.7 0.72] is represented by a signal with the value [-1.7 0.72]. The input signal labeled Num contains the numerator coefficients. The data types of the numerator and denominator coefficients can be different, but the length of the numerator vector and the full denominator vector must be the same. Pad the numerator vector with zeros, if needed.

The block automatically selects the data types and scalings of the output, the coefficients, and any temporary variables.

Data Type Support

The Transfer Fcn Direct Form II Time Varying block accepts signals of any numeric data type supported by Simulink software, including fixed-point data types.

Parameters and Dialog Box

Initial condition: Set the initial condition.
Integer rounding mode: Select the rounding mode for fixed-point operations. 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

Direct Feedthrough	Yes
Scalar Expansion	Yes, of initial conditions