Embedded program not working for some values of simulation time steps from digital clock..?

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V Vaishnavi Kumar
V Vaishnavi Kumar 2013-1-20
A digital clock connected to embedded program and its output connected to display.
sample time of digital clock 0.1 sec.
The embedded prog is
function u =check(T)
persistent g j
if isempty(g)
g=0.3
end
if isempty(j)
j=0
end
T %to display the values from digital clock in command window
if T==g
g %to display the value
j=123
end
u=j
g can be intialised with any values 0.1,0.2.....1
When T takes 0.3 it should execute j=123.. but its not doing so, similarly when g is initialsed with 0.3 or 0.6 or 0.7 its not working..but working well with 0.4, 0.5,0.9..
the simulation time kept is 1 sec

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回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-1-20
编辑：Azzi Abdelmalek 2013-1-20
Maybe, there is a problem with the precision. Try to use a tolerence
tol=10^(-6);
if abs(T-q)<tol
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Azzi Abdelmalek
Azzi Abdelmalek 2013-1-20
编辑：Azzi Abdelmalek 2013-1-20
If you are working with discrete system, in solver option, change the type from variable step to fixed step and set it to the lowest value of your blocks sample time, for example 0.001.(by default it's auto)

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