A simple graphic approach for observer decomposition

Chuei-Tin Chang, Yi Shin Lin, Christos Georgakis

Research output: Contribution to journalArticle

1 Citation (Scopus)


Based upon the proposition that the roles of inputs and outputs in a physical system and those in the corresponding output-injection observer do not really have to be consistent, a systematic procedure is developed in this work to properly divide a set of sparse system models and measurement models into a number of independent subsets with the help of a visual aid. Several smaller sub-observers can then be constructed accordingly to replace the original one. The size of each sub-observer may be further reduced by strategically selecting one or more appended states. These techniques are shown to be quite effective in relieving on-line computation load of the output-injection observers and also in identifying detectable sub-systems.

Original languageEnglish
Pages (from-to)857-873
Number of pages17
JournalJournal of Process Control
Issue number8
Publication statusPublished - 2002 Oct 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Modelling and Simulation
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

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