Robust sliding mode control for axial AMB systems

Nan-Chyuan Tsai, Chao Wen Chiang, Chien Hsien Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


Axial motion of a rotor in AMB (Active Magnetic Bearing) systems is modeled and controlled by the sliding mode control law. A prefilter is embedded to provide the integral action so that the steady state error of position regulation can be eliminated. Computer and experimental simulation are both reported to verify the validity of the hybrid design of SMC (Sliding Mode Controller) cascaded with the prefilter. A test rig of unbalanced beam is implemented to be appropriately real-time controlled, exhibiting satisfied performance and robustness with respect to the system parameter uncertainties. The magnetic force is generated by a DSP-based digital microprocessor. In comparison, a counter example of conventional PI (Proportional and Integral) controller that is mostly employed in axial rotor motion, is presented to illustrate potential instability.

Original languageEnglish
Title of host publication2004 5th Asian Control Conference
Number of pages6
Publication statusPublished - 2004
Event2004 5th Asian Control Conference - Melbourne, Australia
Duration: 2004 Jul 202004 Jul 23


Other2004 5th Asian Control Conference

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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