00:01
So, the characteristic equation of given system we can write 1 plus k multiply with 1 over s to the power 2 plus 2s plus 2 multiply with 1 over s plus 1 and it will be equal to become 0.
00:29
Where gs will be equal to we can write 1 over s plus 1 and s square plus 2s plus 2.
00:48
So, this multiply with yeah this will be equal to we can write 1 over after solving this we will get s cube plus 3s power 2 plus 3s plus 2.
01:10
So, to get the nyquist plot of given system use the following a matlab code and this num equal to 1, i, den equal to 1, 3, 3, 2.
01:42
So, now here g will be equal to we can write tf num den.
01:58
So, now nyquist capital g.
02:11
Now we can draw a figure like this.
02:20
So, here we can write minus 0 .1 and then again 0 .1, 0 .2, 0 .3, 0 .4 and 0 .5 re.
02:46
So, this is re actually and here we can draw a line like this and this is im and this is 0 .4 here.
03:05
Next here we can draw like 0 .2...