Approximate feedforward control

Xian Li, Qing Guo Wang, Wen Jian Cai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)


Disturbances are inevitable in most control systems. They drive the systems away from their set points. It takes time for feedback control to reject them. The feedforward control offers great potentials for regulation performance if the disturbances are measurable. One obstacle for feedforward control implementation is that the theoretical one is unrealizable for various reasons. In this paper, a new feedforward control design approach based on frequency response approximation is proposed and performs much better than the existing method in the literature. A performance measure is defined to assess if the feedforward control can outperform feedback control alone and analytical conditions are derived to determine such a measure a prior. Simulation is presented for illustration of our method.

Original languageEnglish
Title of host publication2015 10th Asian Control Conference
Subtitle of host publicationEmerging Control Techniques for a Sustainable World, ASCC 2015
EditorsHazlina Selamat, Hafiz Rashidi Haruna Ramli, Ahmad Athif Mohd Faudzi, Ribhan Zafira Abdul Rahman, Asnor Juraiza Ishak, Azura Che Soh, Siti Anom Ahmad
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479978625
Publication statusPublished - 8 Sept 2015
Externally publishedYes
Event10th Asian Control Conference, ASCC 2015 - Kota Kinabalu, Malaysia
Duration: 31 May 20153 Jun 2015

Publication series

Name2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015


Conference10th Asian Control Conference, ASCC 2015
CityKota Kinabalu

ASJC Scopus subject areas

  • Control and Systems Engineering


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