Parallel design of feedback control systems utilizing dead time for embedded multicore processors

Yuta Suzuki, Kota Sata, Jun'ichi Kako, Kohei Yamaguchi, Fumio Arakawa, Masato Edahiro

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper presents a parallelization method utilizing dead time to implement higher precision feedback control systems in multicore processors. The feedback control system is known to be difficult to parallelize, and it is difficult to deal with the dead time in control systems. In our method, the dead time is explicitly represented as delay elements. Then, these delay elements are distributed to the overall systems with equivalent transformation so that the system can be simulated or executed in parallel pipeline operation. In addition, we introduce a method of delay-element addition for parallelization. For a spring-mass-damper model with a dead time, parallel execution of the model using our technique achieves 3.4 times performance acceleration compared with its sequential execution on an ideal four-core simulation and 1.8 times on a cycle-accurate simulator of a four-core embedded processor as a threaded application on a real-time operating system.

Original languageEnglish
Pages (from-to)491-502
Number of pages12
JournalIEICE Transactions on Electronics
VolumeE99C
Issue number4
DOIs
Publication statusPublished - 2016 Apr
Externally publishedYes

Keywords

  • Control system
  • Dead time
  • Multicore
  • Parallelization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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