- Scilab help
- CACSD
- abcd
- abinv
- arhnk
- arl2
- arma
- arma2p
- armac
- armax
- armax1
- arsimul
- augment
- balreal
- bilin
- black
- bode
- bstap
- cainv
- calfrq
- canon
- ccontrg
- chart
- cls2dls
- colinout
- colregul
- cont_frm
- cont_mat
- contr
- contrss
- copfac
- csim
- ctr_gram
- dbphi
- dcf
- ddp
- des2ss
- des2tf
- dhinf
- dhnorm
- dscr
- dsimul
- dt_ility
- dtsi
- equil
- equil1
- evans
- feedback
- findABCD
- findAC
- findBD
- findBDK
- findR
- findx0BD
- flts
- fourplan
- frep2tf
- freq
- freson
- fspecg
- fstabst
- g_margin
- gainplot
- gamitg
- gcare
- gfare
- gfrancis
- gtild
- h2norm
- h_cl
- h_inf
- h_inf_st
- h_norm
- hallchart
- hankelsv
- hinf
- imrep2ss
- inistate
- invsyslin
- kpure
- krac2
- lcf
- leqr
- lft
- lin
- linf
- linfn
- linmeq
- lqe
- lqg
- lqg2stan
- lqg_ltr
- lqr
- ltitr
- m_circle
- macglov
- markp2ss
- minreal
- minss
- mucomp
- narsimul
- nehari
- nicholschart
- noisegen
- nyquist
- nyquistfrequencybounds
- obs_gram
- obscont
- observer
- obsv_mat
- obsvss
- p_margin
- parrot
- pfss
- phasemag
- ppol
- prbs_a
- projsl
- reglin
- repfreq
- ric_desc
- ricc
- riccati
- routh_t
- rowinout
- rowregul
- rtitr
- sensi
- sgrid
- show_margins
- sident
- sm2des
- sm2ss
- sorder
- specfact
- ss2des
- ss2ss
- ss2tf
- st_ility
- stabil
- svplot
- sysfact
- syssize
- tf2des
- tf2ss
- time_id
- trzeros
- ui_observer
- unobs
- zeropen
- zgrid
Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
See the recommended documentation of this function
pfss
partial fraction decomposition
Calling Sequence
elts=pfss(Sl) elts=pfss(Sl,rmax) elts=pfss(Sl,'cord') elts=pfss(Sl,rmax,'cord')
Arguments
- Sl
syslin
list (state-space or transfer linear system) rmax : real number controlling the conditioning of block diagoanalization cord : character string'c'
or'd'
.
Description
Partial fraction decomposition of the linear system Sl
(in state-space
form, transfer matrices are automatically converted to state-space form
by tf2ss
):
elts
is the list of linear systems which add up to Sl
i.e. elts=list(S1,S2,S3,...,Sn)
with:
Sl = S1 + S2 +... +Sn
.
Each Si
contains some poles of S according to the
block-diagonalization of the
A
matrix of S
.
For non proper systems the polynomial part of Sl
is put
in the last entry of elts
.
If Sl
is given in transfer form, it is first converted into state-space
and each subsystem Si
is then converted in transfer form.
The A matrix is of the state-space is put into block diagonal form
by function bdiag
. The optional parameter rmax
is sent to
bdiag
. If rmax
should be set to a large number to enforce
block-diagonalization.
If the optional flag cord='c'
is given the elements in elts
are sorted according to the real part (resp. magnitude if cord='d'
)
of the eigenvalues of A matrices.
Examples
See Also
Authors
F.D.;
<< parrot | CACSD | phasemag >> |