What is wrong in this model? I change parameters already.

Answer 1

[Tushar]

Hi Marisa,

I understand that you are encountering issues with the task mentioned in the "Simulink Fundamentals" course. I tested the task on my end and was able to solve it. Here are a few points that may assist you:

• In the 'Discrete Transfer Fcn' dialog box, the numerator and denominator coefficients should be listed in decreasing powers of 'z'. In this case, the Numerator and Denominator should be [Kp+Ki*Ts, -Kp] and [1, -1], respectively.
• As stated in the task, the Initial States should be set to '0'.

• To set the Sample Time to 'Ts', select the 'Discrete Transfer Fcn' block in the Simulink window and enter the following command in the MATLAB command window:

    set_param(gcb,"SampleTime","Ts")

For more information on the 'Discrete Transfer Fcn' block and setting configuration parameters programmatically, please refer to the documentation links provided below:

• https://www.mathworks.com/help/simulink/slref/discretetransferfcn.html
• https://www.mathworks.com/help/simulink/slref/set_param.html

I hope this information proves helpful!