Browse > Article
http://dx.doi.org/10.5302/J.ICROS.2012.18.3.237

Hybrid Adaptive Feedforward Control System Against State and Input Disturbances  

Kim, Jun-Su (Korea Ploytechnic Colleges)
Cho, Hyun-Cheol (Ulsan College)
Kim, Gwan-Hyung (Tongmyong University)
Ha, Hong-Gon (Dong-Eui University)
Lee, Hyung-Ki (Pukyong National University)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.18, no.3, 2012 , pp. 237-242 More about this Journal
Abstract
AFC (Adaptive Feedforward Control) is significantly employed for improving control performance of dynamic systems particularly involving periodic disturbance signals in engineering fields. This paper presents a novel hybrid AFC approach for discrete-time systems with multiple disturbances in terms of control input and state variables. The proposed AFC mechanism is hierarchically composed of a conventional feedforward control framework and PID auxiliary control configuration in parallel. The former is generic to decrease periodic disturbance excited to control actuators and the latter is additionally constructed to overcome control deterioration due to time-varying uncertainty under given systems. We carry out numerical simulation to test reliability of our proposed hybrid AFC system and compare its control performance to a well-known conventional AFC method with respect to time and frequency domains for proving of its superiority.
Keywords
digital AFC; hybrid control; periodic disturbance; gradient descent optimization;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 K. Ogata, Discrete-time Control Systems, Upper Saddle River, New Jersey, Prentice Hall, 1995.
2 X. Guo and M. Bodson, "Adaptive cancellation of a sinusoidal disturbance with rapidaly varying frequency using an augmented error algorithm," Proc. of the IEEE Conf. on Decision & Control, Seville, Spain, pp. 4803-4808, Dec. 2005.
3 H. Zhang, X. Huang, and G. Peng, "A novel adaptive feedforward compensation algorithm for hard disk drive," Proc. of the Int. Conf. on Mechanics & Automation, Luoyang, China, pp. 1275-1279, June 2006.
4 Y. Lu and S. Lin, "Disturbance-observer-based adaptive feedforward cancellation of torque ripples in harmonic drive systems," Elect. Eng., vol. 90, pp. 95-106, 2007.   DOI
5 C. Duan, G. Gu, C. Du, and T. C. Chong, "Robust compensation of periodic disturbance by multirate control," IEEE Trans. on Magnetics, vol. 44, no. 3, pp. 413-418, 2008.   DOI
6 G. Pin, "A direct approach for the frequency-adaptive feedforward cancellation of harmonic disturbances," IEEE Trans. on Signal Processing, vol. 58, no. 7, pp. 3523-3530, 2010.   DOI
7 J. M. Mendel, Lessons in Estimation Theory for Signal Processing, Communications, and Control, Upper Saddle River, New Jersey, Prentice Hall, 1995.