Authors: T. Veijola, H. Kuisma and J. Lahdenperä
Affilation: Helsinki University of Technology, Finland
Pages: 245 - 250
Keywords: Simulation model, electrical equivalencies, gas-film damping, squeezed-film damping, accelerometer model, block models
Simulation blocks of micromechanical sensors and actuators modelling their dynamic electromechanical and fluidic operation are presented. Due to the electrical equivalent circuit realization the sensor system simulations in the frequency and time domains are possible. A sample library containing parameterized building blocks of inertial sensors is constructed. These component blocks include models for mass-spring systems, capacitance, electrostatic force and gas-film damping in the air gap. The sample library is written in the modelling language of the circuit simulation program APLAC. As an example, an accelerometer model is constructed of the components in the sample library, and its characteristics are simulated in the frequency and time domains.