Discrete sampling on continuous-time model

Hello,

For an assignment I have a model in simulink. The model is a statefeedback model in continuous time. Because the system itself uses a computer to control the system I need to control part to be discrete, while the model is continuous.

For the input I achieved it by using the zero-order hold. However I also need to sample the state before it is multiplied by the feedback matrix K. How can I sample the state(where Scope2 measures)? I tried to also use a zero-order-hold, but this gave errors, due to the dimensions. Using a mux and demux does not solve this problem. Regards, Jan Jaap

[Azzi Abdelmalek]

If your are working with continuous system, why are you using sample time, The numeric problem is handled by your solver

Answer 1

[Azzi Abdelmalek]

Have you tried to set the sample time of your Gain2 block?