Scicos Block
fr - eng

Chua's nonlinear function block

Contents

• Chua's nonlinear function block
  • Palette
  • Description
  • Basic blocks equivalent model
  • Dialog box
  • Default properties
  • Interfacing function
  • Computational function
  • See also
  • Authors

Palette

• NonLinear - NonLinear palette

Description

This block realizes the nonlinear function :

$$\begin{eqnarray} y=f\left(u\right)=m_{1}u+\frac{1}{2}\left(m_{0}-m_{1}\right)*\left(\left\vert u+E\right\vert-\left\vert u-E\right\vert\right) \end{eqnarray}$$

where $m_{0}$ and $m_{1}$ are vectorial parameters, u the vectorial input and y the vectorial output. In this block E=1.

Figure 1: Chua nonlinear function

Basic blocks equivalent model

Dialog box

• m0
  Type 'vec' of size -1. m0 slope.

• m1
  Type 'vec' of size -1. m1 slope.

Default properties

• always active: no
• direct-feedthrough: yes
• zero-crossing: no
• mode: no
• regular inputs:
  - port 1 : size [1,1] / type 1
  
• regular outputs:
  - port 1 : size [1,1] / type 1
  
• number/sizes of activation inputs: 0
• number/sizes of activation outputs: 0
• continuous-time state: no
• discrete-time state: no
• object discrete-time state: no
• name of computational function: chuafonc

Interfacing function

• MODNUMCOS/macros/scicos_blocks/NonLinear/CHUAFONC_f.sci [view code]

Computational function

• MODNUMCOS/routines/nonlinear/chuafonc.c (Type 2) [view code]

See also

• SYSTEMG_f - Chua sub-system G block (Scicos Block)
• SYSTEMH_f - Chua sub-system H block (Scicos Block)

Authors

A. Layec