File: hankelsv.cat

package info (click to toggle)
scilab 2.4-1
  • links: PTS
  • area: non-free
  • in suites: potato, slink
  • size: 55,196 kB
  • ctags: 38,019
  • sloc: ansic: 231,970; fortran: 148,976; tcl: 7,099; makefile: 4,585; sh: 2,978; csh: 154; cpp: 101; asm: 39; sed: 5
file content (30 lines) | stat: -rw-r--r-- 769 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 

hankelsv(1)                    Scilab Function                    hankelsv(1)
NAME
  hankelsv - Hankel singular values

CALLING SEQUENCE
  [nk2,W]=hankelsv(sl [,tol])
  [nk2]=hankelsv(sl [,tol])

PARAMETERS

  sl        : syslin list representing the linear system (state-space).

  tol       : tolerance parameter for detecting imaginary axis modes (default
            value is 1000*%eps).

DESCRIPTION
  returns nk2, the squared Hankel singular values of sl and W = P*Q = con-
  trollability gramian times observability gramian.

  nk2 is the vector of eigenvalues of W.

EXAMPLE
  A=diag([-1,-2,-3]);
  sl=syslin('c',A,rand(3,2),rand(2,3));[nk2,W]=hankelsv(sl)
  [Q,M]=pbig(W,nk2(2)-%eps,'c');
  slr=projsl(sl,Q,M);hankelsv(slr)

SEE ALSO
  balreal, equil, equil1