1.
ISA Trans
; 46(4): 555-9, 2007 Oct.
Article
in English
| MEDLINE
| ID: mdl-17632109
ABSTRACT
In this paper, an index for measuring fragility of proportional integral derivative (PID) controllers is proposed. This index relates the losses of robustness of the control loop when controller parameters change, to the nominal robustness of the control loop. Furthermore, it defines when a PID controller is fragile, nonfragile or resilient.