Scicos Block
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Variable delay

Contents

• Variable delay
  • Palette
  • Description
  • Dialog box
  • Default properties
  • Interfacing function
  • Computational function
  • Authors

Palette

• Linear - Linear Palette

Description

The Variable Transport Delay block can be used to simulate a variable time delay. The block might be used to model a system with a pipe where the speed of a motor pumping fluid in the pipe is variable. The block accepts two inputs: the first input is the signal that passes through the block; the second input is the time delay.

Dialog box

• Max delay
  It defines the largest value the time delay input can have.The value cannot be negative.
  Properties : Type 'vec' of size 1.

• initial input
  The output generated by the block until the simulation time first exceeds the time delay input.
  Properties : Type 'vec' of size 1.

• Buffer size
  The number of points the block can store.
  Properties : Type 'vec' of size 1.

Default properties

• always active: yes
• direct-feedthrough: no
• zero-crossing: no
• mode: no
• regular inputs:
  - port 1 : size [1,1] / type 1
  - port 2 : 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: variable_delay

Interfacing function

• SCI/macros/scicos_blocks/Linear/VARIABLE_DELAY.sci [view code]

Computational function

• SCI/routines/scicos/variable_delay.c (Type 4) [view code]

Authors

Ramine Nikoukhah INRIA