Memory Block Vs Transport Delay

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Algesjoia Costa 2013-10-29

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https://ww2.mathworks.cn/matlabcentral/answers/104296-memory-block-vs-transport-delay

评论： Algesjoia Costa 2013-10-31

The question is simple, i use a model in simulink with flip-flop d and a have a loop that a need to put a memory block. Its ok and the matlab choose Discrete-time to simulate this.

Now i trying to introduce a transport delay instead of memory block but matlab choose the Discrete-time to simulate this. That´s my problem, i want to simulate with continuos-time. Its possible to change the memory block for other thing and use continuos-time, and ofc do the same thing that memory block does???

Thanks, i really need help.

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Zack Peters 2013-10-29

What type of source blocks do you have upstream of your transport delay? If you have no continuous blocks in your model then Simulink changes the solver to a discrete solver for fast simulation (there's no need to use a continuous solver on a discrete system).

Perhaps you can attach your model and explain better what is happening and what you are looking to have happen instead?

~Zack

Algesjoia Costa 2013-10-31

i gone put the image of my simulink for you understand better.

Exists 2 circuits but they are the almost the same.

Before this i use memory block instead of transport delay and works perfect but works with solver discrete, and my job is to do in continuos state. So i change memory block to transport delay just to see if it is works in continuos solver but simulink change to discrete.

This is an example of i have to to, because in my project i use VCO block, Tarnsfer function, Multiplier, things like that. You are saying that if i put this image below in my final project that will simulate in continuos solver?? The simulink only changes for discrete because there is only discretes blocks, but when exists continuos blocks we will simulate with a continuos solver?

Thanks for the help.