Integrated s-plane synthesis using 2-way root locus

IN GENERAL, the design of automatic feedback control devices starts with two sets of data: 1. The specifications of the closed-loop performance such as the steady-state errors or error constants, minimum speed and maximum overshoot of the transient, bandwidth, etc., and 2. The known characteristics of physically existing components, combined into a plant which must become a part of the open loop of the control system.