Robust regulation
A robust control denotes a solid controller , is set at the special design and in the parameter design value that he despite deviation of the stretching behavior, assuming a nominal desired characteristics of behavior. A fixed controller is understood to mean a controller whose structure and parameters are independent of time and parameters. It is assumed that the limits within which the parameters can fluctuate are known. Desired properties can be requirements for the settling time, the amount of overshoot or the pole position . The desired properties can depend on the parameters present in each case.
Reasons for the changing route behavior are, for example:
- The controlled system is not fully known.
- The design model emerged from the simplification of a more complicated model, in particular through linearization around different operating points.
- The control structure changes due to the failure of sensors.
One method for a robust control is the H-infinity control .
The aim of achieving the desired properties despite varying or an imprecisely known system behavior is also aimed at by adaptive controllers , with the controller parameters being set here in the simplest case as a function of the operating point.
literature
- J. Ackermann: Robust control . Springer-Verlag, 1993.
Individual evidence
- ↑ Otto Föllinger: Control engineering, introduction to the methods and their application . 8th edition. Hüthig Verlag, Heidelberg 1994, ISBN 3-7785-2336-8 . , Section 15.1
- ↑ a b Jan Lunze: Control engineering 1: System theoretical basics, analysis and design of single-loop controls . 3. Edition. Springer Verlag, Heidelberg 2001, ISBN 3-540-42178-5 . , Section 7.1 (IV)
- ↑ J. Ackermann: Robust regulation . Springer-Verlag, 1993. , Section 11.4