Title :
Specification of sampled data system timing parameters for hard-real-time avionics systems
Author_Institution :
IBM Corp., Houston, TX, USA
Abstract :
The specification of hard-real-time (HRT) parameters involves the discipline of sampled data control theory and consideration of the practical capabilities of avionics processor technology. Historically the process has evolved through phases of rate-scrubbing and algorithm modifications (i.e. smoothing, filtering) and is a compromise between the simplicity of high performance prediction from high rate selection and practical processing capability. The specification process is addressed in this paper and guidelines are derived on the basis of sampled data theory. These guidelines introduce scientific discipline into what has historically been an iterative refinement process and insures that RunTime Environment (RTE) requirements are not over specified
Keywords :
aerospace computer control; aerospace computing; aircraft instrumentation; data communication systems; delays; digital control; feedback; real-time systems; sampled data systems; signal processing equipment; RunTime Environment; algorithm modifications; avionics processor; digital control; filtering; flex-body mode aliasing; gain margin; hard-real-time avionics; iterative refinement process; jitter; phase margin; rate-scrubbing; sampled data control theory; sampled data system timing; smoothing; specification process; transport delay; Aerospace electronics; Control systems; Delay; Digital control; Feedback loop; Frequency; Jitter; Sampled data systems; Sampling methods; Timing;
Conference_Titel :
Digital Avionics Systems Conference, 1993. 12th DASC., AIAA/IEEE
Conference_Location :
Fort Worth, TX
Print_ISBN :
0-7803-1343-7
DOI :
10.1109/DASC.1993.283520
