Root Locus Practical Sketching Rules for Fractional-Order Systems

Figure 10

Root locus of 𝐺₃(𝑠). Cases from group (iii), 3≤𝛼₁<4 (𝑎₁=1,  𝑏₁=2).

(a)

(b)

(c)

(d)

(e)

(f)

(g)