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  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2005-01-09 22:58:21 UTC
  • mfrom: (1.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20050109225821-473xr8vhgugxxx5j
Tags: 3.0-12
http://bugs.debian.org/255869
changed configure.in to build scilab's own malloc.o, closes: #255869

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man/eng/scicos/RATELIMITER.htm
 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
 
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<!--Converted with LaTeX2HTML 2002-2-1 (1.70)
 
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original version by:  Nikos Drakos, CBLU, University of Leeds
 
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* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
 
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* with significant contributions from:
 
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  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
 
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<HTML>
 
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<HEAD>
 
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<TITLE>Rate limiter </TITLE>
 
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<META NAME="description" CONTENT="Rate limiter ">
 
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<META NAME="keywords" CONTENT="main">
 
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<META NAME="resource-type" CONTENT="document">
 
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<META NAME="distribution" CONTENT="global">
 
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<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
 
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<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
 
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<LINK REL="STYLESHEET" HREF="main.css">
 
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</HEAD>
 
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<BODY bgcolor="#FFFFFF">
 
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<!--Table of Child-Links-->
 
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<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
 
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<UL>
 
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<LI><A NAME="tex2html4687"
 
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  HREF="RATELIMITER.htm#SECTION00577100000000000000">Library</A>
 
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<LI><A NAME="tex2html4688"
 
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  HREF="RATELIMITER.htm#SECTION00577200000000000000">Description</A>
 
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<LI><A NAME="tex2html4689"
 
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  HREF="RATELIMITER.htm#SECTION00577300000000000000">Dialog Box</A>
 
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<LI><A NAME="tex2html4690"
 
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  HREF="RATELIMITER.htm#SECTION00577400000000000000">Default properties</A>
 
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<LI><A NAME="tex2html4691"
 
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  HREF="RATELIMITER.htm#SECTION00577500000000000000">Interfacing function</A>
 
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<LI><A NAME="tex2html4692"
 
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  HREF="RATELIMITER.htm#SECTION00577600000000000000">Computational function (type 4)</A>
 
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</UL>
 
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<!--End of Table of Child-Links-->
 
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<HR>
 
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<H2><A NAME="SECTION00577000000000000000"></A><A NAME="RATELIMITER"></A>
 
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<BR>
 
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Rate limiter 
 
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</H2>
 
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<DIV ALIGN="CENTER">
 
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<!-- MATH
 
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 $\epsfig{file=RATELIMITER.eps,width=90.00pt}$
 
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 -->
 
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<IMG
 
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 WIDTH="143" HEIGHT="108" ALIGN="BOTTOM" BORDER="0"
 
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 SRC="img130.gif"
 
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 ALT="\epsfig{file=RATELIMITER.eps,width=90.00pt}">
 
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</DIV>
 
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<H3><font color="blue"><A NAME="SECTION00577100000000000000">
 
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Library</A>
 
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</font></H3>
 
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Others
 
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<H3><font color="blue"><A NAME="SECTION00577200000000000000">
 
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Description</A>
 
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</font></H3>
 
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<P>
 
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<H3><font color="blue"><A NAME="SECTION00577300000000000000">
 
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Dialog Box</A>
 
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</font></H3>
 
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<DIV ALIGN="CENTER">
 
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<TABLE CELLPADDING=3 BORDER="1">
 
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<TR><TD ALIGN="CENTER">Set rate limiter parameters</TD>
 
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<TD></TD>
 
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</TR>
 
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<TR><TD ALIGN="CENTER">max slope</TD>
 
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<TD ALIGN="CENTER">1</TD>
 
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</TR>
 
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<TR><TD ALIGN="CENTER">min slope</TD>
 
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<TD ALIGN="CENTER">-1</TD>
 
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</TR>
 
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</TABLE>
 
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</DIV>
 
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<UL>
 
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<LI>max slope: YYYY
 
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</LI>
 
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<LI>min slope: YYYY
 
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</LI>
 
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</UL>
 
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<H3><font color="blue"><A NAME="SECTION00577400000000000000">
 
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Default properties</A>
 
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</font></H3>
 
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<UL>
 
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<LI>always active: no
 
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</LI>
 
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<LI>direct-feedthrough: yes
 
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</LI>
 
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<LI>zero-crossing: no
 
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</LI>
 
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<LI>mode: no
 
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</LI>
 
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<LI>number/sizes of inputs: 1 / 1
 
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</LI>
 
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<LI>number/sizes of outputs: 1 / 1
 
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</LI>
 
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<LI>number/sizes of activation inputs: 0 / 
 
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</LI>
 
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<LI>number/sizes of activation outputs: 0 / 
 
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</LI>
 
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<LI>continuous-time state: no
 
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</LI>
 
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<LI>discrete-time state: no
 
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</LI>
 
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<LI>name of computational function: <EM>ratelimiter</EM>
 
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</LI>
 
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</UL>
 
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<H3><font color="blue"><A NAME="SECTION00577500000000000000">
 
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Interfacing function</A>
 
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</font></H3>
 
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<TT>scilab/macros/scicos_blocks/misc/RATELIMITER.sci</TT>
 
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<H3><font color="blue"><A NAME="SECTION00577600000000000000">
 
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Computational function (type 4)</A>
 
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</font></H3>
 
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<BR>
 
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<PRE>#include "scicos_block.h"
 
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#include &lt;math.h&gt;
 
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#if WIN32
 
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#define NULL    0
 
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#endif
 
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void ratelimiter(scicos_block *block,int flag)
 
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{/*  rpar[0]=rising rate limit, rpar[1]=falling rate limit */
 
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  double* pw,rate,t;
 
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  if (flag == 4){/* the workspace is used to store previous values */
 
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    if ((*block-&gt;work=
 
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         scicos_malloc(sizeof(double)*4))== NULL ) {
 
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      set_block_error(-16);
 
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      return;
 
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    }
 
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    pw=*block-&gt;work; 
 
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    pw[0]=0.0;
 
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    pw[1]=0.0;
 
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    pw[2]=0.0;
 
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    pw[3]=0.0;
 
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  }else  if (flag == 5){
 
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    scicos_free(*block-&gt;work);
 
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  } else if (flag==1) {
 
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    if (get_phase_simulation()==1) do_cold_restart();
 
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    pw=*block-&gt;work; 
 
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    t=get_scicos_time();
 
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    if(t&gt;pw[2]){
 
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      pw[0]=pw[2];
 
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      pw[1]=pw[3];
 
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      rate=(block-&gt;inptr[0][0]-pw[1])/(t-pw[0]);
 
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    }
 
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    else if(t&lt;=pw[2]){
 
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      if(t&gt;pw[0]){
 
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        rate=(block-&gt;inptr[0][0]-pw[1])/(t-pw[0]);
 
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      }else{
 
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        rate=0.0;
 
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      }
 
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    }
 
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    if(rate&gt;block-&gt;rpar[0]){
 
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      block-&gt;outptr[0][0]=(t-pw[0])*block-&gt;rpar[0]+pw[1];
 
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    } else if(rate&lt;block-&gt;rpar[1]){
 
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      block-&gt;outptr[0][0]=(t-pw[0])*block-&gt;rpar[1]+pw[1];
 
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    }else{
 
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      block-&gt;outptr[0][0]=block-&gt;inptr[0][0];
 
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    }
 
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    pw[2]=t;
 
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    pw[3]=block-&gt;outptr[0][0];
 
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  }
 
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}
 
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</PRE>
 
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<BR><HR>
 
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<ADDRESS>
 
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Ramine Nikoukhah
 
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2004-06-22
 
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</ADDRESS>
 
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</BODY>
 
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</HTML>