How can i insert time varying parameters in simulink block?

Question

Hi everyone, I have a  simulink model simultaing a periodic continuous system in the form: dx(t)=A(t)x(t)+B(t)u(t) with A(t+T)=A(t) and B(t+T)=B(t) In every instant i compute the matrices A(t) and B(t). I am introducing a Kalman filter, but i can't figure out how to insert variable matrices in the simulink block. What is the best way to do it? Thanks in advance for the help.

John Williams · Accepted Answer

For this use case, I would suggest creating a variable of type Simulink.Parameter in the base workspace.
 
 
x = Simulink.Parameter
x.Value = [1 1 1 ; 2 2 2];
The above will create a variable x of Simulink.Parameter where the Value field is where you want to put your matrix.
 
I am attaching a model where I have written a MATLAB function which updates the x.Value in each time step. You may follow this approach or you may find some other way to manipulate the x.Value in your Simulink model.

Create the variable x as show above. Then simulate the model and see the x.Value at the end of the simulation.

How can i insert time varying parameters in simulink block?

Need a Custom Version or Complete Simulation for This Problem?

How to I use get param to get a value from an output of a bus?

How do I uninstall and reinstall MathWorks Service Host?

Why am I receiving error messages about singularities in my Simulink model?

Simulink turn off data logging

MatLab App Design - how to use default value for Edit Field function?

When is subsystem reference a better choice than model reference?

Modeling and Simulation of an Induction Motor Using Sliding Mode Control in MATLAB

Solar Inverter with BMS in MATLAB Simulink Complete Simulation Project

Simulation and Kinematic Analysis of a 5-DOF RRRRRP Robotic Manipulator Using MATLAB

Get a Free Consultation or a Sample Assignment Review!