Convert the function of transfer system model

It is a practice "IF convert to transfer function of CDT.vi" in the system identification toolkit, but is a VI to go the other way? I used the id of system tools to estimate the TF from my system, but I want to compare it to the base of the first order response of the system to my real stimulus data.

I can build a first TF command using the 'create order 1 model.vi CD' but I don't know how do to then turn this into a model of continuous system in which I can plug my real data.

I am able to build a model system using 'IF create system model.vi' but it is a polynomial model, if there is a way to cajole this in the form of an order of 1st exponential base, it would be a great solution as well.

(I'm experienced with LV, but my theory of control is rusty and I am totally new to CD modules and IF - then I apologize if this is a silly question)

Hello

You can use IF partially known continuous transfer (1st order) .vi model function and IF partially assess continuous known model transfer function (1st order SISO) .vi to estimate a 1st order TF, in which the parameters are defined as in CD create 1st order Model.vi

Tags: NI Software

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    {color: #993300} create or replace package metaphone
    is
    function to generate (s varchar2) return varchar2;
    Metaphone end;
    /
    display errors; {color}
    {color: #993300} create or replace package body metaphone
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    type rule_rec is record
    (
    whole f_off
    f_match varchar2 (10),
    f_result varchar2 (10)
    );
    type rule_tab is table of the directory index rule_rec;
    g_rules rule_tab;
    g_vowels constant varchar2 (5): = 'AEIOU ';
    --
    function cmp_rule
    (
    p_rule rule_rec,
    p_off pls_integer,
    P_STR varchar2
    ) return a Boolean value;
    --
    function to generate the varchar2 (s varchar2) return
    is
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    l_r varchar2 (32767).
    Start
    -get rid of the non-alphanumeric characters
    I'm looping 1.length (s)
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    then
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    end if;
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    and instr (g_vowels, substr(l_s,i+1,1)) = 0
    then
    -a hard rule:
    -If silent "GH" and not at the end or before a vowel
    null;
    on the other
    -analysis of the structure of words
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    If cmp_rule (g_rules (r), i, l_s) then
    l_r: = l_r | g_rules (r) .f_result;
    "exit";
    end if;
    end loop;
    end if;
    end loop;
    l_r return;
    end generate;
    --
    procedure add_rule (whole p_off, p_match varchar2, varchar2 p_result)
    is
    l_rule_rec rule_rec;
    Start
    l_rule_rec.f_off: = p_off;
    l_rule_rec.f_match: = p_match;
    l_rule_rec.f_result: = p_result;
    g_rules (g_rules. (Count + 1): = l_rule_rec;
    end add_rule;
    --
    function cmp_rule
    (
    p_rule rule_rec,
    p_off pls_integer,
    P_STR varchar2
    ) return Boolean
    is
    CH1 tank;
    Char CH2;
    Start
    If p_rule.f_match like '%c %' or p_rule.f_match like '% %' then
    I'm looping 1.length (p_rule.f_match)
    CH1: = substr (p_rule.f_match, i, 1);
    CH2: is substr (p_str, p_off + p_rule.f_off + i, 1);.
    If ch2 is null then
    Returns false;
    end if;
    If ch1 = 'v' then
    If instr (g_vowels, ch2) = 0 then
    Returns false;
    end if;
    elsif ch1 = 'c' then
    If instr (g_vowels, ch2)! = 0 then
    Returns false;
    end if;
    elsif ch1! = ch2 then
    Returns false;
    end if;
    end loop;
    Returns true;
    end if;
    If p_off & lt; = - p_rule.f_off then
    Returns false;
    end if;
    return p_rule.f_match
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    end cmp_rule;
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    -to initialize the rule table
    -order is important
    add_rule (-1, 'MB', null);
    add_rule(0,'B','B');
    add_rule(0,'CIA','X');
    add_rule(0,'CH','X');
    add_rule(0,'CI','S');
    add_rule(0,'CE','S');
    add_rule(0,'CY','S');
    add_rule(0,'C','K');
    add_rule(0,'DGE','J');
    add_rule(0,'DGY','J');
    add_rule(0,'DGI','J');
    add_rule(0,'D','T');
    add_rule(0,'F','F');
    add_rule(0,'GN',null);
    add_rule(0,'GNED',null);
    add_rule(0,'GI','J');
    add_rule(0,'GE','J');
    add_rule(0,'GY','J');
    add_rule(0,'G','K');
    add_rule(-1,'vHc',null);
    add_rule (-1, 'CH', null);
    add_rule (-1, 'PH', null);
    add_rule (-1, 'SH', null);
    add_rule (-1, 'TH', null);
    add_rule(0,'H','H');
    add_rule(0,'J','J');
    add_rule (-1, 'CK', null);
    add_rule(0,'K','K');
    add_rule(0,'L','L');
    add_rule(0,'M','M');
    add_rule(0,'N','N');
    add_rule(0,'PH','F');
    add_rule(0,'P','P');
    add_rule(0,'Q','K');
    add_rule(0,'R','R');
    add_rule(0,'SH','X');
    add_rule(0,'SIO','X');
    add_rule(0,'SIA','X');
    add_rule(0,'S','S');
    add_rule(0,'TIA','X');
    add_rule(0,'TIO','X');
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    Metaphone end;
    /
    display errors; {color}




    {color: #993300} source
    http://www.zdnetasia.com/Builder/Architect/DB/0, 39044553,39200579,00.htm

    Concerning
    Vincent...
    {color}

    Its already a function. Only, it's that its interior of a package. Then you can simply use it in SQL like that.

    SELECT package_name.function_name FROM dual;

    See below...

    SQL> create or replace package metaphone
  2  is
  3      function generate(s varchar2) return varchar2;
  4  end metaphone;
  5  /

Package created.

SQL> show errors;
No errors.
SQL>
SQL> create or replace package body metaphone
  2  is
  3      type rule_rec is record
  4      (
  5          f_off       integer,
  6          f_match     varchar2(10),
  7          f_result    varchar2(10)
  8      );
  9      type rule_tab is table of rule_rec index by binary_integer;
 10      g_rules rule_tab;
 11      g_vowels constant varchar2(5) := 'AEIOU';
 12      --
 13      function cmp_rule
 14      (
 15          p_rule rule_rec,
 16          p_off pls_integer,
 17          p_str varchar2
 18      ) return boolean;
 19      --
 20      function generate(s varchar2) return varchar2
 21      is
 22          l_s varchar2(32767);
 23          l_r varchar2(32767);
 24      begin
 25          -- get rid of non-alpha characters
 26          for i in 1..length(s) loop
 27              if upper(substr(s,i,1)) between 'A' and 'Z' then
 28                  l_s := l_s || upper(substr(s,i,1));
 29              end if;
 30          end loop;
 31          if l_s is null then
 32              return null;
 33          end if;
 34          -- clean up the word a bit
 35          if l_s like 'AE%' or l_s like 'GN%' or l_s like 'KN%'
 36          or l_s like 'PN%' or l_s like 'WR%'
 37          then
 38              l_s := substr(l_s,2);           -- drop first letter
 39          elsif l_s like 'X%' then
 40              l_s := 'S' || substr(l_s,2);    -- change to S
 41          elsif l_s like 'WH%' then
 42              l_s := 'W' || substr(l_s,2);    -- change to W
 43          end if;
 44          for i in 1..length(l_s) loop
 45              if i > 1 and substr(l_s,i-1,1) = substr(l_s,i,1)
 46                  and substr(l_s,i,1) != 'C'
 47              then
 48                  -- drop the second of doubled letter except C
 49                  null;
 50              elsif instr(g_vowels,substr(l_s,i,1)) > 0 then
 51                  -- ignore all except initial vowels
 52              if i = 1 then
 53                  l_r := l_r || substr(l_s,i,1);
 54              end if;
 55              elsif substr(l_s,i,2) = 'GH'
 56                  and i < length(l_s)-2
 57                  and instr(g_vowels,substr(l_s,i+1,1)) = 0
 58              then
 59                  -- a difficult rule:
 60                  -- silent if in "gh" and not at end or before a vowel
 61                  null;
 62              else
 63                  -- scan for word patterns
 64                  for r in 1..g_rules.count loop
 65                      if cmp_rule(g_rules(r),i,l_s) then
 66                          l_r := l_r || g_rules(r).f_result;
 67                          exit;
 68                      end if;
 69                  end loop;
 70              end if;
 71          end loop;
 72          return l_r;
 73      end generate;
 74      --
 75      procedure add_rule(p_off integer,p_match varchar2,p_result varchar2)
 76      is
 77          l_rule_rec  rule_rec;
 78      begin
 79          l_rule_rec.f_off := p_off;
 80          l_rule_rec.f_match := p_match;
 81          l_rule_rec.f_result := p_result;
 82          g_rules(g_rules.count+1) := l_rule_rec;
 83      end add_rule;
 84      --
 85      function cmp_rule
 86      (
 87          p_rule rule_rec,
 88          p_off pls_integer,
 89          p_str varchar2
 90      ) return Boolean
 91      is
 92          ch1 char;
 93          ch2 char;
 94      begin
 95          if p_rule.f_match like '%c%' or p_rule.f_match like '%v%' then
 96              for i in 1..length(p_rule.f_match) loop
 97                  ch1 := substr(p_rule.f_match,i,1);
 98                  ch2 := substr(p_str,p_off+p_rule.f_off+i,1);
 99                  if ch2 is null then
100                      return false;
101                  end if;
102                  if ch1 = 'v' then
103                      if instr(g_vowels,ch2) = 0 then
104                          return false;
105                      end if;
106                  elsif ch1 = 'c' then
107                      if instr(g_vowels,ch2) != 0 then
108                          return false;
109                      end if;
110                  elsif ch1 != ch2 then
111                      return false;
112                  end if;
113              end loop;
114              return true;
115          end if;
116          if p_off <= -p_rule.f_off then
117              return false;
118          end if;
119          return p_rule.f_match
120                  = substr(p_str,p_off+p_rule.f_off,length(p_rule.f_match));
121      end cmp_rule;
122  begin
123      -- initialize the rules table
124      -- order is important
125      add_rule(-1,'MB',null);
126      add_rule(0,'B','B');
127      add_rule(0,'CIA','X');
128      add_rule(0,'CH','X');
129      add_rule(0,'CI','S');
130      add_rule(0,'CE','S');
131      add_rule(0,'CY','S');
132      add_rule(0,'C','K');
133      add_rule(0,'DGE','J');
134      add_rule(0,'DGY','J');
135      add_rule(0,'DGI','J');
136      add_rule(0,'D','T');
137      add_rule(0,'F','F');
138      add_rule(0,'GN',null);
139      add_rule(0,'GNED',null);
140      add_rule(0,'GI','J');
141      add_rule(0,'GE','J');
142      add_rule(0,'GY','J');
143      add_rule(0,'G','K');
144      add_rule(-1,'vHc',null);
145      add_rule(-1,'CH',null);
146      add_rule(-1,'PH',null);
147      add_rule(-1,'SH',null);
148      add_rule(-1,'TH',null);
149      add_rule(0,'H','H');
150      add_rule(0,'J','J');
151      add_rule(-1,'CK',null);
152      add_rule(0,'K','K');
153      add_rule(0,'L','L');
154      add_rule(0,'M','M');
155      add_rule(0,'N','N');
156      add_rule(0,'PH','F');
157      add_rule(0,'P','P');
158      add_rule(0,'Q','K');
159      add_rule(0,'R','R');
160      add_rule(0,'SH','X');
161      add_rule(0,'SIO','X');
162      add_rule(0,'SIA','X');
163      add_rule(0,'S','S');
164      add_rule(0,'TIA','X');
165      add_rule(0,'TIO','X');
166      add_rule(0,'TH','0');
167      add_rule(0,'TCH',null);
168      add_rule(0,'T','T');
169      add_rule(0,'V','F');
170      add_rule(0,'Wv','W');
171      add_rule(0,'W',null);
172      add_rule(0,'X','KS');
173      add_rule(0,'Yv','Y');
174      add_rule(0,'Y',null);
175      add_rule(0,'Z','S');
176  end metaphone;
177  /

Package body created.

SQL> select metaphone.generate('stephens') from dual
  2  /

METAPHONE.GENERATE('STEPHENS')
--------------------------------------------------------------------------------
STFNS

    Published by: Karthick_Arp on January 14, 2009 23:29

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