Windup in Control: Its Effects and Their Prevention (Advances in Industrial Control) - Softcover

Über die Autorin bzw. den Autor

Peter Hippe was born in Berlin in 1941. He received the Dipl.-Ing. degree in mechanical engineering from Universität Stuttgart, Stuttgart in 1969 and the Dr.-Ing. degree from Friedrich-Alexander Universität, Erlangen in 1976. Since then he has been teaching in the Electrical Engineering Department. His main research interests are in the time and frequency domain design of compensators and the problems caused by constrained actuators. He has coauthored the book Zustandsregelung (Springer, 1985) and he is the author of the book Windup in Control (Springer, 2006) Joachim Deutscher was born in Schweinfurt, Germany in 1970. He received the Dipl.-Ing. (FH) degree in Electrical Engineering from Fachhochschule Würzburg- Schweinfurt-Aschaffenburg in 1996, the Dipl.-Ing. Univ. degree in Electrical Engineering and the Dr.-Ing. degree from Universität Erlangen-Nürnberg in 1999 and 2003, respectively. He is head of the nonlinear control systems group at the Lehrstuhl für Regelungstechnik, Universität Erlangen-Nürnberg. His main research interests are in nonlinear control and in the application of polynomial matrix methods in control.

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Actuator saturation is probably the most frequent nonlinearity encountered in control applications. Input saturation leads to controller windup, removable by structural modification during compensator realization and plant windup which calls for additional dynamics.

Peter Hippe presents solutions to the windup prevention problem for stable and unstable single-input-single-output and multiple-input-multiple-output (MIMO) systems. The solutions use only standard tools for the investigation of linear systems – state equations, transfer functions, etc. The stability tests are based on well-known criteria for loops consisting of a linear part with isolated sector-type nonlinearity. Less rigorous "engineering solutions" which guarantee improved performance but without strict proof of stability are also demonstrated.

MIMO systems in which the behaviour of controlled variables is decoupled require specific input vectors and so also suffer problems of directionality when their input signals saturate. This can have extremely deleterious consequences for closed-loop behaviour. Windup in Control offers an exact solution to this directionality problem for stable and unstable systems. The methods laid out in this survey also integrate solutions for applications with rate-constrained actuators and for bumpless transfer from manual to automatic during system start-up or in override control. Developments in control methods are always supplemented by easily repeated numerical examples.

Academics doing control-related research in electronics, mechanics, or mechatronics and engineers working in the process industries will find this book an extremely useful overview of systematic windup prevention for all kinds of systems. It also has valuable insights to offer the graduate student of control.

Advances in Industrial Control aims to report and encourage the transfer of technology in control engineering. The rapiddevelopment of control technology has an impact on all areas of the control discipline. The series offers an opportunity for researchers to present an extended exposition of new work in all aspects of industrial control.