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1996
IEEE

Visual assessment of a real-time system design: a case study on a CNC controller

9 years 4 months ago
Visual assessment of a real-time system design: a case study on a CNC controller
In this paper we describe our experiments on a realtime system design, focusing on design alternatives such as scheduling jitter, sensor-to-output latency, intertask communication schemes and the system utilization. The prime objective of these experiments was to evaluate a real-time design produced using the period calibration method [2] and thus identify the limitations of the method. We chose a computerized numerical control (CNC) machine as our target real-time system and built a realistic controller and a plant simulator. Our results were extracted from a controlled series of more than hundred test controllers obtained by varying four test variables. This study unveils many interesting facts: (1) average sensor-to-output latency is one of the most dominating factors in determining control quality; (2) the effect of scheduling jitter appears only when the average sensor-to-output latency is sufficiently small; and (3) loop processing periods are another dominating factor of perfor...
Namyun Kim, Minsoo Ryu, Seongsoo Hong, Manas Sakse
Added 07 Aug 2010
Updated 07 Aug 2010
Type Conference
Year 1996
Where RTSS
Authors Namyun Kim, Minsoo Ryu, Seongsoo Hong, Manas Saksena, Chong-Ho Choi, Heonshik Shin
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