What is the transfer function of a phase lag compensator? The values of ∝ and τ are given as ∝ > 1 and τ > 0:
1
\(\frac{1}{ \propto }\frac{{\left( {s + \frac{1}{\tau }} \right)}}{{\left( {s + \frac{1}{{ \propto \tau }}} \right)}}\)
2
\(\frac{1}{ \propto }\frac{{\left( {s - \frac{1}{\tau }} \right)}}{{\left( {s -\frac{1}{{ \propto \tau }}} \right)}}\)
3
\(\frac{1}{ \propto }\frac{{\left( {s + \frac{1}{\tau }} \right)}}{{\left( {s - \frac{1}{{ \propto \tau }}} \right)}}\)
4
\(\frac{1}{ \propto }\frac{{\left( {s - \frac{1}{\tau }} \right)}}{{\left( {s + \frac{1}{{ \propto \tau }}} \right)}}\)