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http://hdl.handle.net/10397/96216
Title: | Sliding-mode position control of medium-stroke voice coil motor based on system identification observer | Authors: | Pan, J Or, SW Zou, Y Cheung, NC |
Issue Date: | Nov-2015 | Source: | IET electric power applications, Nov. 2015, v. 9, no. 9, p. 620-627 | Abstract: | This study presents the performance improvement in the position control of a medium-stroke voice coil motor (VCM) using a sliding-mode controller (SMC) with a system identification observer (SIO). The proposed VCM is developed with a full stroke of 24 mm, and its non-linear electro-magneto-mechanical characteristics are analysed by the threedimensional finite element method. A least-squares-based SIO is introduced into the VCM control system prior to the position regulation of the SMC in order to achieve a shorter rise time of 29 ms and a smaller steady-state error of < ±2 μm under a square-wave excitation of 20 mm amplitude and 0.5 Hz frequency. An experimental verification between the SMC and a traditional proportion-integral-differential controller is carried out. The results demonstrate improved dynamic and static tracking responses in the SMC under load-free, frequency-varying operations. | Publisher: | Institution of Engineering and Technology | Journal: | IET electric power applications | ISSN: | 1751-8660 | EISSN: | 1751-8679 | DOI: | 10.1049/iet-epa.2014.0486 | Rights: | © The Institution of Engineering and Technology 2015 This is the peer reviewed version of the following article: Pan, J., Or, S.W., Zou, Y. and Cheung, N.C. (2015), Sliding-mode position control of medium-stroke voice coil motor based on system identification observer. IET Electric Power Applications, 9: 620-627, which has been published in final form at https://doi.org/10.1049/iet-epa.2014.0486. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. |
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Sliding-mode_Positicontrol_Medium-stroke.pdf | Pre-Published version | 841.78 kB | Adobe PDF | View/Open |
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