Root Locus of Unity Feedback Transfer Function: Find K Range for Stability

[muh_j18]

I want a MATLAB code to draw the root locus for a characteristic equation of a transfer function of unity feedback, also what is the range of K that keeps the system stable , here is the characteristic equation:

s^5+600s^4+50000s^3+ks^2+24ks+80k=0
please help, thanks in previous

 

[MATLABdude]

I want a MATLAB code to draw the root locus for a characteristic equation of a transfer function of unity feedback, also what is the range of K that keeps the system stable , here is the characteristic equation:

s^5+600s^4+50000s^3+ks^2+24ks+80k=0
please help, thanks in previous

The Control Toolbox rlocus function:
http://www.mathworks.com/access/helpdesk/help/toolbox/control/ref/rlocus.html

...And a brief tutorial on its use:
http://www.engin.umich.edu/group/ctm/rlocus/rlocus.html