Simscape virtual node?

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Mathew Thorne 2016-12-15

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/316972-simscape-virtual-node

Hey,

I was wondering if any one knew if it was possible to assign some sort of virtual node. Or not a node per say, I dont want any connections to it. Just an, inbetween step. Here I have an example of what I mean.

Any help will be appreciated!

Regards

Mat

component Test nodes A = foundation.mechanical.rotational.rotational; % A: left B = foundation.mechanical.rotational.rotational; % B: right end

    parameters
        drag_1 = { 1, 'N*m' }; % Drag 1
        drag_2 = { 1, 'N*m' }; % Drag 2
    end
    variables
        t1 = { 0, 'N*m' };     % Through torque 1
        t2 = { 0, 'N*m' };     % Through torque 2
        w1 = { 0, 'rad/s' };   % Change in velocity 1
        w2 = { 0, 'rad/s' };   % Change in velocity 2
        C_t = { 0, 'N*m' };    % Terminal C torque
        C_w = { 0, 'rad/s' };  % Terminal C velocity
    end
    branches
        t1 : A.t -> C_t;         % Assigning the 1st through torque
        t2 : C_t -> B.t;         % Assigning the 2nd through torque
    end
    equations 
        w1 == A.w - C_w
        w2 == C_w - B.w
        t1 == drag_1;
        t2 == drag_2
    end