- Title
- Saturation-aware control design for micro-nano positioning systems
- Creator
- Salton, Aurélio T.; Al-Ghanimi, Ali; Flores, Jeferson V.; Zheng, Jinchuan; Gomes da Silva, João M.; Fu, Minyue
- Relation
- IET Control Theory and Applications Vol. 11, Issue 15, p. 2559-2566
- Publisher Link
- http://dx.doi.org/10.1049/iet-cta.2017.0573
- Publisher
- The Institution of Engineering and Technology (IET)
- Resource Type
- journal article
- Date
- 2017
- Description
- This study proposes a non-linear saturation-aware controller for dual-stage micro–nano actuators. Dual-stage motion systems use two actuators in series in order to achieve an improved performance: a micro actuator responsible for a large range of actuation, and a nano actuator (NA) able to achieve a high bandwidth. The NA is commonly driven by flexure-based piezoelectric actuators subject to a limited range which presents large oscillations in the presence of output saturation. In order to avoid these oscillations, a non-linear smooth switching function that limits the actuation of the NA to only track references within its range is proposed. Experimental results demonstrate the effectiveness of the proposed approach, which is able to reduce oscillations and energy consumption without compromising settling time performance.
- Subject
- position control; nonlinear control systems; microactuators; nanoactuators; nonlinear functions
- Identifier
- http://hdl.handle.net/1959.13/1351261
- Identifier
- uon:30674
- Identifier
- ISSN:1751-8644
- Language
- eng
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