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Time_Delay

Input time offset

Block Screenshot

Contents

Description

  • The Time Delay block delays the input for a time specified in its interface
  • At the start of the simulation, the block outputs the initial input parameter until the simulation time exceeds the programmed delay time; then the block outputs the delayed input.
  • Parameters

    Alternative forms

    Interfacing function

  • SegPal\macros\Time_Delay.sci
  • Computational function

  • SCI/modules/scicos_blocks/src/c/time_delay.c (Type 4)
  • Test program

  • SegPal\demos\Time_Delay.zcos
  • Notes

    The Time Delay block is used in the TURBADDUC block of the FRANCIS FR2 and PELTON models, to initialize the initial flow rate when launching the simulation at t=0 s, and above all to generate the water hammer in the hydraulic pilelines.

    This device allows the simulation to be launched smoothly, in steady state.

    This component is similar to the TIME_DELAY (Continuous fix delay) component already present in the XCOS palette. The interest here is to display in the box, the programmed delay and the initialization value.

    The buffer represents a space in which the time values ​​of the input signal are stored.

    If the horizon is too short, error messages are displayed in the Scilab console. It is then advisable to increase the buffer size to avoid any malfunction.


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