while loop in simscape language

2 次查看（过去 30 天）

显示更早的评论

Tomas Iesmantas 2011-6-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/8953-while-loop-in-simscape-language

回答： Vishnu Teja Vithala 2018-7-9

采纳的回答： Arnaud Miege

在 MATLAB Online 中打开

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.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Arnaud Miege 2011-6-7

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/8953-while-loop-in-simscape-language#answer_12365

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

5 个评论
显示 3更早的评论隐藏 3更早的评论

Arnaud Miege 2011-6-8

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 2015-11-6

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.

请先登录，再进行评论。