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poly_stable (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Owning Class: linear systems

Requires: MathScript RT Module

Syntax

b = poly_stable(a)

Legacy Name: polystab

Description

Stabilizes a polynomial by ensuring that all roots of the polynomial a are located within the unit circle. If a root is located outside of the unit circle, poly_stable uses a circle-based geometric reflection to reflect the root inside of the unit circle.

Examples

Inputs

Name Description
a Specifies a polynomial.

Outputs

Name Description
b Returns a stabilized polynomial.

Details

The following table lists the support characteristics of this function.

Supported in the LabVIEW Run-Time Engine Yes
Supported on RT targets Yes
Suitable for bounded execution times on RT Not characterized

Examples

a = rand(1, 6);
b = poly_stable(a);
ra = roots(a);
rb = roots(b);
plot(real(ra), imag(ra), 'ro', real(rb), imag(rb), 'b*')

Related Topics

poly
poly_scale
roots


 

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