home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Amiga Format CD 46
/
Amiga Format CD46 (1999-10-20)(Future Publishing)(GB)[!][issue 1999-12].iso
/
-in_the_mag-
/
reader_requests
/
scilab
/
demos
/
oscil
/
oscil.sci
< prev
Wrap
Text File
|
1999-09-16
|
649b
|
36 lines
function [yd]=fty(t,y)
//
// RHS of Differential equation
//
en = ener(t)
if y(1)<0 then
if en<.5 then
yd(1) = 0;
else
yd(1) = l.*(e-r*y(2));
end;
yd(2)=-y(2)/(r*c);
else
yd(1)=l*(e*en-y(2)*r);
yd(2)=(y(1)-y(2))/(r*c);
end;
function [en]=ener(t)
//
// Energy
//
t1=t-pe1*int(t/pe1);
if t1>pe2 then en=0; else en=1; end;
function [en]=ene1(t,pe1,pe2)
t1=t-pe1*int(t/pe1)
en=round( ones(t1)-t1/pe1 + (.5-(1.-pe2/pe1))*ones(t1) )
function [en]=ene2(t,pe1,pe2)
t1=t/pe1-int(t/pe1)
en=round( ones(t1)-t1 + (.5-(1-pe2/pe1))*ones(t1) )
function [en]=ene3(t,pe1,pe2)
en=round( ones(t)-t/pe1+int(t/pe1) + (.5-(1-pe2/pe1))*ones(t) )