NOW THE “PRACTICING ENGINEER TAKES OVER”
Control system design is an interdisciplinary and multi-stage process and is not a sub-area of mathematics. It is rather an engineering endeavor. While applied mathematics plays a crucial role in facilitating the solution of robust control system design problems, it behooves the engineer to reduce the real-world control task to a tractable mathematical problem. The required simplifying assumptions and the attendant mathematical modeling effort require sound engineering knowledge and judgement. Furthermore, the mathematical solution of the control problem needs to be implemented and the validity and applicability of the modeling assumptions need to be verified by the engineer. Hence, in this chapter the process of applying the QFT robust control system design method is presented from this broad perspective and it is shown that it is uniquely suited to address and solve engineering control system design problems.