Simulink multiport switch problem

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Kit
Kit 2016-6-22
评论： Thorsten Tatarek 2017-2-8
I would like to use 3 pid controllers with a switch to control the system (switch from PID controller to PID controller3 at t=5s and then to PID controller6 at t=10s). But the switch seems not working properly.
This is the PID controller output (the first PID controller output)
This is the PID controller3 output (the second PID controller output)
This is the PID controller6 output (the third PID controller output)
I suppose to have the following controller output
But I got this controller output which is the same as the PID controller output (the first PID controller)
Here is the .zip file of this Simulink model.
switchedpid.zip
p.s. I tried to adjust the parameters in the PID controllers and the switch is working properly. So, I think the switch is affected by the port1,2,3 inputs which are the controller outputs??? Where's the problem?

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回答（2 个）

goerk
goerk 2016-6-22
Try to typecast your switching signal (from signal builder) to int32.
Kit
Kit 2016-6-23
Solved. I think the switch is working.
  1 个评论
Thorsten Tatarek
Thorsten Tatarek 2017-2-8
How do you solved it? i have a similar problem with the multiport switch. I use a rectangular pulse generator signal on port 1 and a sin wave signal on port 2. i wanna switch between them. When i have the sin wave connected, but use the rectangular switch port with a constant, the signal is kind of diagonal instead of a rectangular up and down.

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