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Polynomial

Perform evaluation of polynomial coefficients on input values

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  • Polynomial block

Libraries:
Simulink / Math Operations

Description

The Polynomial block evaluates P(u) at each time step for the input u. You define a set of polynomial coefficients in the form that the MATLAB® polyval command accepts.

Examples

Model a Digital Thermometer Using the Polynomial Block

Model a Digital Thermometer Using the Polynomial Block

How the ex_sldemo_boiler model uses the Polynomial block.

Ports

Input

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Value at which to evaluate the polynomial P(u).

Data Types: single | double

Output

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Value of the polynomial P(u) evaluated at the input signal.

Data Types: single | double

Parameters

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Specify polynomial coefficients in MATLAB polyval form. The first coefficient corresponds to xN and the remaining coefficients correspond to decreasing orders of x. The last coefficient represents the constant for the polynomial.

Programmatic Use

Block Parameter: coefs
Type: real array
Default: [ +2.081618890e-019, -1.441693666e-014, +4.719686976e-010, -8.536869453e-006, +1.621573104e-001, -8.087801117e+001 ]

Block Characteristics

Data Types

double | single

Direct Feedthrough

yes

Multidimensional Signals

no

Variable-Size Signals

no

Zero-Crossing Detection

no

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

PLC Code Generation
Generate Structured Text code using Simulink® PLC Coder™.

Version History

Introduced before R2006a

See Also

Topics