sysconv

system conversion

Calling Sequence

[s1,s2]=sysconv(s1,s2)

Arguments

:s1,s2 list (linear syslin systems) :

Description

Converts s1 and s2 into common representation in order that system interconnexion operations can be applied. Utility function for experts. The conversion rules in given in the following table.

:”c” continuous time system : :”d” discrete time system : :n sampled system with sampling period n : :[] system with undefined time domain For mixed systems s1 and

s2 are put in state-space representation.

:

s1\s2 |    "c"     |     "d"     |      n2        |     []     |
---------------------------------------------------------------
"c"   | nothing    |uncompatible | c2e(s1,n2)     |  c(s2)     |
---------------------------------------------------------------
"d"   |uncompatible| nothing     | e(s1,n2)       |  d(s2)     |
---------------------------------------------------------------
n1    | c2e(s2,n1) | e(s2,n1)    | n1<>n2 uncomp  |  e(s2,n1)  |
      |            |             | n1=n2  nothing |            |
---------------------------------------------------------------
[]    | c(s1)      | d(s1)       | e(s1,n2)       |  nothing   |
---------------------------------------------------------------

With the following meaning:

:n1,n2 sampling period : :c2e(s,n) the continuous-time system s is transformed into a sampled

system with sampling period n.

: :c(s) conversion to continuous (time domain is “c”) : :d(s) conversion to discrete (time domain is “d”) : :e(s,n) conversion to samples system with period n :

Examples

s1=`ssrand`_(1,1,2);
s2=`ss2tf`_(s1);
[s1,s2]=sysconv(s1,s2);

See Also

• syslin linear system definition
• ss2tf conversion from state-space to transfer function
• tf2ss transfer to state-space