Quantitative Feedback Design of Linear and Nonlinear Control Systems is a self-contained book dealing with the theory and practice of Quantitative Feedback Theory (QFT). The author presents feedback synthesis techniques for single-input single-output, multi-input multi-output linear time-invariant and nonlinear plants based on the QFT method. Included are design details and graphs which do not appear in the literature, which will enable engineers and researchers to understand QFT in greater depth. Engineers will be able to apply QFT and the design techniques to many applications, such as flight and chemical plant control, robotics, space, vehicle and military industries, and numerous other uses. All of the examples were implemented using Matlab® Version 5.3; the script file can be found at the author's Web site. QFT results in efficient designs because it synthesizes a controller for the exact amount of plant uncertainty, disturbances and required specifications. Quantitative Feedback Design of Linear and Nonlinear Control Systems is a pioneering work that illuminates QFT, making the theory - and practice - come alive.

A new synthesis technique for highly uncertain linear time-invariant multiple input-output (MIO) feedback systems, is applied to the flight control problem. The uncertainty is due to a fixed design having to satisfy the performance specifications over a range of flight conditions. The aircraft used is a Fighter CCV-YF16. The design specifications differ with mode, so a separate design is made for each of the modes considered: Direct Side Force (Ay), Vertical Translation, Lateral Translation, and Fuselage Yaw Pointing. The first and thrid are 3x3, the second is 2x2, while the fourth is a mixture of 2x2 and 3x3. The outstanding feature of the synthesis technique is the replacement of the uncertain MIO system by a number of uncertain single input, single output (SIO) single-loop systems, with disturbances. The solutions of these SIO problems are guaranteed to solve the MIO problem. The tradeoffs between complexity of compensation and loop bandwidth economy are studied and presented. Performance under severe limiting and rate limiting is included for the Ay mode, and is highly satisfactory. Incorporation of scheduling and prediagonalization are also presented. A digital compensation design is included for the vertical translation mode.