jeepx5
Member level 1
A question on Root Locus
In Grey's book the following contant is mentioned
Assuming the maximum bandwidth in this amplifier is required, but that little or no peaking is allowed. This means that with the maximum loop gain applied, the poles should not go beyond the points marked X and Y on the locus where an angle of 45 degree is mad between the negative real axis and a line drawn from X or Y to the origin.
My question is why 45 degree? And how to obtain the 45 degree?
Is the 45 degree is a golden rule for every feed back system?
In Grey's book the following contant is mentioned
Assuming the maximum bandwidth in this amplifier is required, but that little or no peaking is allowed. This means that with the maximum loop gain applied, the poles should not go beyond the points marked X and Y on the locus where an angle of 45 degree is mad between the negative real axis and a line drawn from X or Y to the origin.
My question is why 45 degree? And how to obtain the 45 degree?
Is the 45 degree is a golden rule for every feed back system?