Exact Interference of Tasks with Variable Rate-Dependent Behaviour
| Autor: | Timo Feld, Frank Slomka |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Crankshaft
0209 industrial biotechnology Mathematical optimization Computer science Angular velocity 02 engineering and technology Interference (wave propagation) Computer Graphics and Computer-Aided Design 020202 computer hardware & architecture law.invention Task (computing) Acceleration Variable (computer science) 020901 industrial engineering & automation law Control theory Control system 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Rotation (mathematics) Software |
| Zdroj: | IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems. :1-1 |
| ISSN: | 1937-4151 0278-0070 |
| DOI: | 10.1109/tcad.2017.2729459 |
| Popis: | In embedded real-time systems, the schedulability analysis is an important method to verify whether the real-time constraints are satisfied. Especially, engine control systems in the automotive industry are particular challenging regarding their real-time analysis. Some of the tasks of such systems are triggered at predetermined angular values of the crankshaft. Thus, the frequency of activation increases for higher crankshaft rotation speeds. To avoid overloads, these tasks reduce their computational demand for higher rotation speeds. The variable rate-dependent behavior (VRB) task model has been proposed as a means of modeling such rate-dependent behavior. In this paper, we introduce a new method for the exact computation of interference for VRB-tasks. A number of experimental results are reported to validate our approach and compare it with existing analysis. These experimental results illustrate that our method outperforms previous results in terms of precision and runtime. |
| Databáze: | OpenAIRE |
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