Papers

Peer-reviewed
2015

Positioning control of a pneumatic stage under different pipe length: Performance improvement of PDD2 control and suppression of flow disturbance

JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING
  • Naoki Ito
  • ,
  • Yukinori Nakamura
  • ,
  • Shinji Wakui

Volume
9
Number
1
First page
1
Last page
8
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1299/jamdsm.2015jamdsm0008
Publisher
JAPAN SOC MECHANICAL ENGINEERS

In this study, we consider the positioning of a pneumatic stage in order to compensate effects of different length of pipes, which connect servo valves and cylinders. Since, in industrial scenes, it is difficult to use pipes of the same length due to the structure of industries, the length of each pipe is often different. In this case, the characteristic of the pneumatic system, which consists of the pipes, servo valves, and chambers, changes in accordance with the pipe length. It leads to two issues: The first one is that the performance of proportional-derivative-double derivative (PDD2) control, which is effective for the control of pneumatic actuators, is degraded. To overcome this issue, the parameter of a pre-compensator for the PDD2 control is tuned. The suitable value of this tuned parameter increases with the length of the pipes. The second one is that the effects of flow disturbance increase due to the different pipe length. When the length of the pipes is not same, it is probable that the magnitude of flow disturbance transmitted to each pipe is different. For this reason, multiple flow disturbance observers (FDOBs) are implemented in a control system. Experimental results show that the repeatability of the positioning is improved by using the FDOBs.

Link information
DOI
https://doi.org/10.1299/jamdsm.2015jamdsm0008
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000352265400008&DestApp=WOS_CPL
ID information
  • DOI : 10.1299/jamdsm.2015jamdsm0008
  • ISSN : 1881-3054
  • Web of Science ID : WOS:000352265400008

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