A Modified Full-Band Adjustable Bi-Quad Filter for Mechanical Resonance Suppression in Industrial Servo Drive Systems

Yangyang Chen, Ming Yang, Yongping Sun, Jiang Long, Dianguo Xu, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)

Abstract

As for mechanical resonance suppression, the online adjustable bi-quad filter is a powerful method and has been widely used in industrial applications. Compared with the notch filter, the bi-quad filter has one more parameter for notch depth design, which is more suitable for servo systems with nature damping coefficient and limited resonant gain. However, this classic method still has room for improvement. Usually, the adjustable bi-quad filter has two steps, including fast Fourier transformation (FFT) analysis, and filter tuning. In this paper, concerning these two steps mentioned above, two targeted modification strategies are proposed. Firstly, a single-phase MIT (SM/T) method is used to remove the certain noise cluster of the FFT result. Then, inspired by the discretization distortion correction of the notch filter, a similar method is designed to avoid that the bi-quad filter becomes inaccurate when the central notch frequency is close to the Nyquist frequency. In the end, the validity and effectiveness of aforementioned analysis and strategies are verified by experimental results.
Original languageEnglish
Title of host publication2019 IEEE Industry Applications Society Annual Meeting, IAS 2019
Number of pages6
Place of PublicationUSA
PublisherIEEE Press
Publication dateSept 2019
Article number8912440
ISBN (Print)978-1-5386-4540-6
ISBN (Electronic)978-1-5386-4539-0
DOIs
Publication statusPublished - Sept 2019
Event54th IEEE Industry Applications Society Annual Meeting - IAS 2019 - Hilton Baltimore, 401 West Pratt Street, Baltimore, United States
Duration: 29 Sept 20193 Oct 2019
https://ias.ieee.org/2019annualmeeting

Conference

Conference54th IEEE Industry Applications Society Annual Meeting - IAS 2019
LocationHilton Baltimore, 401 West Pratt Street
Country/TerritoryUnited States
CityBaltimore
Period29/09/201903/10/2019
Internet address
SeriesIndustry Applications Society. I E E E - I A S Annual Meeting. Conference Record
ISSN0197-2618

Keywords

  • Bi-quad filter
  • Mechanical resonance
  • Digital control
  • Speed measurement
  • Motor drive

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