A wide-range velocity measurement method for motion control

Toshiaki Tsuji, Takuya Hashimoto, Hiroshi Kobayashi, Mariko Mizuochi, Kouhei Ohnishi

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


This paper discusses velocity measurement for motor drives with optical encoders. Although many methods on velocity measurement have been proposed, accurate measurement was not achieved in a high-speed range. This paper therefore proposes synchronous-measurement method (S method) that measures the velocity synchronized with the alteration of pulse numbers in each sampling period. Accurate velocity measurement is achieved in all speed ranges with this method. Furthermore, other velocity prediction methods are applicable in addition to the method. Simulation and experimental results verify the validity of the proposed method.

Original languageEnglish
Pages (from-to)510-519
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Issue number2
Publication statusPublished - 2009
Externally publishedYes


  • Acceleration control
  • Mechatronics
  • Motion control
  • Optical encoder
  • Tachometers
  • Velocity measurement

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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