Tracking position control of a linear actuator on distributed control network

Gi Sang Choi, Gi Heung Choi, Woon Kyung Kim, Jung Soo Kim

Research output: Contribution to journalConference articlepeer-review


Tracking position control of a linear magnetic actuator implemented on distributed control network was studied. In the distributed control system involving a discrete-time controller and a linear magnetic actuator, time delay happens as the controller reads the sensor data or sends out the control input to the actuator located at a remote site. In many cases the time delay is not ignorable, and has significant effect on the control system performance. In order to compensate for the adverse effect of the time delay, the modified Smith predictor was introduced to the control system. The results of simulation and experiment show that the performance of linear magnetic actuator can be improved by augmenting the modified Smith predictor onto the existing control system. With the modified Smith predictor, the position error is reduced and the constant disturbance is suppressed.

Original languageEnglish
Article number60422J
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6042 I
StatePublished - 2005
EventICMIT 2005: Control Systems and Robotics - Chongging, China
Duration: 20 Sep 200523 Sep 2005


  • Linear magnetic actuator
  • Smith predictor
  • Tracking position control


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