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while loop in simscape language

조회 수: 13 (최근 30일)
Tomas Iesmantas
Tomas Iesmantas 2011년 6월 7일
답변: Vishnu Teja Vithala 2018년 7월 9일
Hi, I'm having some troubles in creating ssc file where I need to use while loop (or maybe for). Here is my code:
parameters
gain = { [0 0 1/3], '1' }; % Gain
max={[0.3 0.1 0.25],'1'} %Maximum pressures
end
parameters
stop = { 0, '1' };
k={1,'1'};
end
equations
while stop<1
if I<=sum(max(1:k))
stop=1;
coef=gain(k);
end
k=k+1;
end
O == coef * I;
end
And when I try to build library with ssc_build I get message like this:
Illegal flow control construct 'while' in equation block
Am I doing something wrong, or there is no possibility in simscape language to use "while" and "for" statements (although conditional "if" is allowed)?
Thanks in advance.

채택된 답변

Arnaud Miege
Arnaud Miege 2011년 6월 7일
while and for loops are not allowed in the Simscape language, see the equations documentation ("Supported Functions" section) and Defining Component Equations in the Simscape documentation. What are you trying to do?
Arnaud
  댓글 수: 5
Arnaud Miege
Arnaud Miege 2011년 6월 8일
I would suggest doing this in Simulink/Stateflow or Embedded MATLAB and using a Simulink->PS Converter block to feed to the flow rate sources. Alternatively, if you want to stay within the Simscape environment, you could probably use the PS Switch block in conjunction with the PS Max and PS Min blocks.
Andreas
Andreas 2015년 11월 6일
Hi Arnaud,
while and for would be helpful, to create parameter-driven discretisations of simscape-blocks (like in Modelica language) for any type of lumped models.

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Vishnu Teja Vithala
Vishnu Teja Vithala 2018년 7월 9일
I agree, Simscape not supporting while and for loops is pretty big limitation

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