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Microelectromechanical Components in Electrical Metrology by Manninen, Antti; Karkkainen, Anu; Pesonen, Nadine; Oja, Aarne; Seppa, Heikki is a scholarly article available to read on EtoBox.

What is Microelectromechanical Components in Electrical Metrology about?

Microelectromechanical systems (MEMS) can offer a competitive alternative for conventional technology in electrical precision measurements. This article summarises recent work in development of MEMS solutions for electrical metrology. MEMS-based voltage references, RMS-to-DC converters, high frequency power sensors, and reference oscillators are discussed. The main principle of operation of the components is the balance between electrical forces and mechanical spring forces in micromachined silicon structures. In RMS sensors and RMS-to-DC converters, the quadratic voltage dependence of the force between plates of a moving-plate capacitor is utilised, and the operation of the MEMS voltage reference is based on the pull-in phenomenon of a moving-plate capacitor. Advantages of MEMS devices compared to more conventional solutions include small size, low power consumption, low price in mass production, and stability. The drift caused by electrostatic charging effects has turned out to be a major problem. This problem has not yet been solved in DC applications, but it can be circumvented by using AC actuation instead of DC and by compensating the internal DC voltages of the component. In

Author

Manninen, Antti; Karkkainen, Anu; Pesonen, Nadine; Oja, Aarne; Seppa, Heikki

Published

2007

Language

EN