Title :
Identification Method for Plant Dynamics Over Nyquist Frequency
Author :
Kawafuku, M. ; Jonghyun Eom ; Hirai, Hirokazu
Author_Institution :
Nagoya Nagoya Inst. of Technol., Nagoya
Abstract :
This paper presents a precise identification technique for plant dynamic characteristics under the restricted sampling rate of A/D and D/A converters. The proposal technique can expand the identification frequency range based on an interpolation method, achieving twice frequency bandwidth as original Nyquist frequency at the identification. The effectiveness of the proposed identification was verified by the results for the head positioning system in hard disk drives.
Keywords :
identification; interpolation; position control; A/D converters; D/A converters; Nyquist frequency; hard disk drives; identification method; interpolation method; plant dynamics; Bandwidth; Digital control; Frequency conversion; Frequency domain analysis; Frequency measurement; Interpolation; Proposals; Resonance; Sampling methods; Transfer functions;
Conference_Titel :
Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE
Conference_Location :
Taipei
Print_ISBN :
1-4244-0783-4
DOI :
10.1109/IECON.2007.4460250
