Reduced-order dynamic compensator design for stability robustness of linear discrete-time systems

1991 ◽  
Vol 36 (9) ◽  
pp. 1077-1081 ◽  
Author(s):  
S.R. Kolla ◽  
J.B. Farison
Keyword(s):  
Discrete Time ◽  
Reduced Order ◽  
Stability Robustness ◽  
Discrete Time Systems ◽  
Compensator Design ◽  
Dynamic Compensator ◽  
Time Systems

Stability and robustness for discrete-time systems with control signal saturation

2000 ◽  
Vol 214 (1) ◽  
pp. 65-76 ◽  
Author(s):  
A R Plummer ◽  
C S Ling
Keyword(s):  
Discrete Time ◽  
Controller Design ◽  
Control Signal ◽  
Design Stage ◽  
System Control ◽  
Stability Robustness ◽  
Discrete Time Systems ◽  
The Stability ◽  
Time Systems ◽  
Signal Saturation

All practical control systems exhibit control signal saturation. The effect that this saturation has on the control system performance, especially stability and robustness, can be significant and must be understood at the controller design stage. This paper presents conditions for global asymptotic stability and measures of stability robustness for such systems. These are demonstrated through simulation examples, and it is shown how an understanding of the stability conditions can inform the controller design process. The off-axis circle criterion is used as the basis for a sufficient condition for stability, and it is argued that this is not overly restrictive in practice. The derivations are carried out in discrete time, and servo-system control is envisaged as an important application area for the techniques; however, the results are applicable more widely.

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