Anti-Windup Compensation for Embedded Cylindrical-Array Magnetic Actuator

Abstract:

An Anti-Windup (AW) compensator is applied to the Embedded Cylindrical-Array Magnetic Actuator (ECAMA) to sustain the performance of spindle position regulation for milling machines under actuator saturation. Since ECAMA is a type of Active Magnetic Bearing (AMB), the maximum supplied coil current and the induced magnetic force are both limited by their extrema. Once the magnetic actuator is saturated, the required control input cannot be realized by the actuator as long as the magnitude of control input exceeds the upper limit of the actuator output. In this work, an AW compensator is therefore proposed and employed to compensate the output of PID controller to prevent saturation of ECAMA. By employing commercial software MATLAB/Simulink and signal processing interface, Module DS1104 by dSPACE, the efficacy of the AW compensation is practically verified by intensive experiments.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 1491-1497
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.1491
• Online since: October 2011
• Authors: Nan Chyuan Tsai, Rong Mao Lee
• Keywords: Active Magnetic Bearing (AMB), PID Controller, Saturation of Actuator, Windup

References

[1] K. J. Astrom and L. rundqwist, Integrator Windup and How to Avoid It, , In Proceeding American Control Conference, 21-23 June 1989, Pittsburgh, USA.

DOI: 10.23919/acc.1989.4790464

[2] S. Tarbouriech, I. Queinnec and G. Garcia, Anti-Windup Strategy for Systems Subject to Actuator and Sensor Saturations, Chap. 6 in Advanced Strategies in Control systems with Input and Output Constrains, LNCIS, Vol. 346, Springer-Verlag, (2007).

DOI: 10.1007/978-3-540-37010-9_6

[3] N. -C. Tsai and R. -M. Lee, Regulation of Spindle Position by Magnetic Actuator Array, International Journal of Advanced Manufacturing Technology, DOI: 10. 1007/s00170-010-2830-0, (2010).

[4] S. Tarbouriech and M. Turner, Anti-Windup Design: An Overview of Some Recent Advances and Open Problems, IET Control Theory and Applications, Vol. 3, No. 1, pp.1-19, (2009).

DOI: 10.1049/iet-cta:20070435

[5] N. -C. Tsai and S. -L. Hsu, On Sandwiched Magnetic Bearing Design, Electromegnetics, Vol. 27, No. 6, pp.371-385, (2007).

[5] N. -C. Tsai, L. -W. Shih and R. -M. Lee, Counterbalance of Cutting Force for Advanced Milling Operations, Mechanical Systems and Signal Processing, Vol. 24, No. 4, pp.1191-1208, (2010).

DOI: 10.1016/j.ymssp.2009.10.005