Robust design of an inkjet-printed capacitive sensor for position tracking of a MOEMS-mirror in a Michelson interferometer setup

Lisa-Marie Faller; Hubert Zangl

doi:10.1117/12.2264792

30 May 2017 Robust design of an inkjet-printed capacitive sensor for position tracking of a MOEMS-mirror in a Michelson interferometer setup

Lisa-Marie Faller, Hubert Zangl

Author Affiliations +

Proceedings Volume 10246, Smart Sensors, Actuators, and MEMS VIII; 1024611 (2017) https://doi.org/10.1117/12.2264792
Event: SPIE Microtechnologies, 2017, Barcelona, Spain

Abstract

To guarantee high performance of Micro Optical Electro Mechanical Systems (MOEMS), precise position feedback is crucial. To overcome drawbacks of widely used optical feedback, we propose an inkjet-printed capacitive position sensor as smart packaging solution. Printing processes suffer from tolerances in excess of those from standard processes. Thus, FEM simulations covering assumed tolerances of the system are adopted. These simulations are structured following a Design Of Computer Experiments (DOCE) and are then employed to determine a optimal sensor design. Based on the simulation results, statistical models are adopted for the dynamic system. These models are to be used together with specifically designed hardware, considered to cope with challenging requirements of ≈50nm position accuracy at 10MS/s with 1000μm measurement range. Noise analysis is performed considering the influence of uncertainties to assess resolution and bandwidth capabilities.

Conference Presentation

Citation Download Citation

Lisa-Marie Faller and Hubert Zangl "Robust design of an inkjet-printed capacitive sensor for position tracking of a MOEMS-mirror in a Michelson interferometer setup", Proc. SPIE 10246, Smart Sensors, Actuators, and MEMS VIII, 1024611 (30 May 2017); https://doi.org/10.1117/12.2264792

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