how i can Increase (stabilizie, if must) the original poles of the system by multiplying them by 2, 3 and 5 consecutively; use these new poles as the poles of the closed loop system.

Answer 1

[Shashwat Bajpai]

Please refer to the following link for information on designing transfer functions in MATLAB:

https://www.mathworks.com/help/control/getstart/linear-lti-models.html

Further analysis can be done according to the requirement of your problem using the various functions available in the Control System Toolbox.

Hope this helps!