Optimal Control of Random Vibration by the Use of an Active Dynamic Vibration Absorber (Experimental Considerations on the Effect of the Control with Feedforward Link)

Kazuo Yoshida, Taro Shimogo, Hidekazu Nishimura

Research output: Contribution to journalArticle


For the vibration control of a main structure subjected to a random input with a dominant frequency, an active dynamic vibration absorber is manufactured, which is equipped with a linear motor as an actuator and is digitally controlled by means of optimal feedback and feedforward links. First, by performing impulse excitation, the usefulness of the optimal feedback control is verified. Second, in the frequency responses obtained from a stationary random excitation, the effectiveness of the optimal feedforward link is demonstrated in comparison with a feedback link only. Further, in a nonstationary random excitation in which the same nonstationary random wave can be realized every time, it is confirmed that the active dynamic vibration absorber is useful also for nonstationary random input.

Original languageEnglish
Pages (from-to)2310-2317
Number of pages8
JournalTransactions of the Japan Society of Mechanical Engineers Series C
Issue number495
Publication statusPublished - 1987 Jan 1



  • Application of Control
  • Digital Control
  • Dynamic Vibration Absorber
  • Feedforward Control
  • Optimal Control
  • Random Vibration

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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