Question

function [Li_current] = light_influent [SimulationTime] 
switch flag_light
        case 0
            %Light intensity is set to a constant value for the whole simulation
            Li_current= pKt.Li
        case 1
             %Light intensity periodically alternates between 'on' at a set value or 'off'
             get_param (MyModel, SimulationTime)

Answer 1

这里的技巧是使用持久变量。基本上，您需要跟踪上次打开灯的时间，以及灯是打开还是关闭。这是一个最小的工作示例，它将每秒打开和关闭灯

function [Li_current] = light_influent(SimulationTime)

% Declare and initialize the persistent variable during the first run
persistent lastTime
persistent lightOn
if isempty(lastTime)
    lastTime = SimulationTime; 
end
if isempty(lightOn)
    % Start with the light off
    lightOn = false; 
end
disp([ lastTime, SimulationTime, lightOn ] )

% Declared here for testing purposes...
flag_light = 1;
switch flag_light
case 0
    %Light intensity is set to a constant value for the whole simulation
    Li_current = 1;
case 1
     %Light intensity periodically alternates between 'on' at a set value or 'off'
     % Switch every one second. 
     switchFrequency = 1;
     if (SimulationTime - lastTime) > switchFrequency
         % If the light is on, turn it off. If off, turn it on
         lightOn = ~lightOn;
         lastTime = SimulationTime;
         disp('switched')
     end
     if lightOn
         Li_current = 1;
     else
         Li_current = 0;
     end
end

如何在某些模拟时间值期间循环触发变量到不同的值（如

1 个答案: