Load controller design for dual-stage actuator considering compensation for interference and disturbance

Yusaku Shinohara, Kenta Seki, Makoto Iwasaki, Hiroshi Chinda, Masaki Takahashi

Research output: Contribution to journalArticlepeer-review


This paper presents a controller design approach to provide the precise force control considering compensation for interference and disturbance in load devices. In the control system, a pneumatic actuator and a voice coil motor are combined as a dual-stage actuator to expand the servo bandwidth of the load control. The interference between the actuators, however, deteriorates the servo performance, especially at around the cross-over frequency. In addition, the disturbance generated by an abrasive motor deteriorates the tracking performance for the target value. In this research, therefore, a PQ method is adopted to achieve the high precision load control by expanding the servo bandwidth. Here, the compensators are designed to compensate for the interference, while a resonant filter is designed to suppress the disturbance with the specific frequency, paying attention to a vector locus of the open-loop characteristic. The proposed approach has been verified by experiments using an actual load device.

Original languageEnglish
Pages (from-to)4155-4164
Number of pages10
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Issue number783
Publication statusPublished - 2011
Externally publishedYes


  • Controller
  • Disturbance suppression
  • Dual-stage actuator
  • Interference suppression
  • Pneumatic actuator
  • Servo mechanism
  • Voice coil motor

ASJC Scopus subject areas

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


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