Article (Scientific journals)
Design of freeform geometries in a MEMS accelerometer with a mechanical motion preamplifier based on a genetic algorithm
Wang, Chen; Song, X.; Fang, W. et al.
2020In Microsystems and Nanoengineering, 6 (1)
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Keywords :
Accelerometers; Bandwidth; Degrees of freedom (mechanics); Fits and tolerances; Genetic algorithms; Geometry; MEMS; Microelectromechanical devices; Design approaches; Design Methodology; Fabrication tolerances; Mechanical motions; MEMS accelerometer; Micro electromechanical system (MEMS); Parameter mismatches; Sensitivity improvements; Design
Abstract :
[en] This paper describes a novel, semiautomated design methodology based on a genetic algorithm (GA) using freeform geometries for microelectromechanical systems (MEMS) devices. The proposed method can design MEMS devices comprising freeform geometries and optimize such MEMS devices to provide high sensitivity, large bandwidth, and large fabrication tolerances. The proposed method does not require much computation time or memory. The use of freeform geometries allows more degrees of freedom in the design process, improving the diversity and performance of MEMS devices. A MEMS accelerometer comprising a mechanical motion amplifier is presented to demonstrate the effectiveness of the design approach. Experimental results show an improvement in the product of sensitivity and bandwidth by 100% and a sensitivity improvement by 141% compared to the case of a device designed with conventional orthogonal shapes. Furthermore, excellent immunities to fabrication tolerance and parameter mismatch are achieved. © 2020, The Author(s).
Disciplines :
Electrical & electronics engineering
Author, co-author :
Wang, Chen ;  Université de Liège - ULiège > Montefiore Institute
Song, X.;  PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China
Fang, W.;  College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
Chen, F.;  Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
Zeimpekis, I.;  ORC, University of Southampton, Southampton, SO17 1BJ, United Kingdom
Wang, Y.;  PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China
Quan, A.;  ESAT-MICAS, University of Leuven, Leuven, 3001, Belgium
Bai, J.;  College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
Liu, H.;  PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China
Schropfer, G.;  Coventor—A Lam Research Company, Villebon sur Yvette, 91140, France
Welham, C.;  Coventor—A Lam Research Company, Villebon sur Yvette, 91140, France
Kraft, Michael ;  Université de Liège - ULg
Language :
English
Title :
Design of freeform geometries in a MEMS accelerometer with a mechanical motion preamplifier based on a genetic algorithm
Publication date :
2020
Journal title :
Microsystems and Nanoengineering
eISSN :
2055-7434
Publisher :
Nature Publishing Group, United Kingdom
Volume :
6
Issue :
1
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Natural Science Foundation of Hubei Province: 2019CFB108Science Challenge Project: TZ2016006-0502-02
Available on ORBi :
since 07 September 2021

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