Title :
RT control scheduling to reduce control performance degrading
Author :
Lbertos, P.A. ; Crespo, A. ; Ripoll, I. ; Vallés, M. ; Balbastre, P.
Author_Institution :
Dept. of Syst. Eng. & Control, Univ. Politecnica de Valencia, Spain
Abstract :
In the framework of real-time digital control, two fundamental parameters are defined, the control effort and the control action interval. The first one is related to the strength of the control that, due to the intersampling open-loop control, determines the degrading of performances under unexpected delays. The second one refers to the unavoidable delays in the multitasking environment due to interactions among the tasks. As a consequence, the scheduling policy should consider not only the tasks delays but also their influence in the control loop behavior, being calculated to minimize the overall degrading of performances
Keywords :
delays; digital control; multiprogramming; real-time systems; scheduling; RT control scheduling; control action interval; control effort; control loop behavior; control performance degradation reduction; intersampling open-loop control; multitasking environment; overall performance degradation minimization; real-time digital control; task delays; unavoidable delays; Control design; Control systems; Degradation; Delay effects; Digital control; Multitasking; Open loop systems; Processor scheduling; Scheduling algorithm; Timing;
Conference_Titel :
Decision and Control, 2000. Proceedings of the 39th IEEE Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6638-7
DOI :
10.1109/CDC.2001.914705
