krac2

continuous SISO system limit feedback gain

Calling Sequence

g=krac2(sys)

Arguments

:sys SISO linear system (syslin) : :g constant :

Description

krac2(sys) computes the gains g such that the system sys fedback by g ( sys/.g) has 2 real equal poles.

Examples

h=`syslin`_('c',352*`poly`_(-5,'s')/`poly`_([0,0,2000,200,25,1],'s','c'));
`clf`_();`evans`_(h,100)
g=krac2(h)
hf1=h/.g(1);`roots`_(`denom`_(hf1))
hf2=h/.g(2);`roots`_(`denom`_(hf2))

See Also

• evans Evans root locus
• kpure continuous SISO system limit feedback gain