Papers – Page 8 – TechConnect Briefs

Complete Transient Simulations of Electrostatic Actuators

Cojocaru C., Lerch P., Kloeck B., Bourgeois C., Renaud Ph., EPFL, CH

A code for the dynamical simulation of electrostatic actuated micromechanical systems with complex 3D geometry was created. It allows exact electrical force computation at each time step during the dynamic analyses. A finite element method [...]

System Level Simulation of a Digital Accelerometer

Kraft M., Lewis C.P., Coventry University, UK

This paper describes the derivation of a detailed model of a micromachined accelerometer and its implementation in a commercial SPICE package. The sensing element is modeled at a system level, the control and interface electronics [...]

Electrical Analogue of Capacitive Force-Balanced Accelerometer Used in HSPICE Simulator

Li Z., Wu G., Wang Y.Y., Peking University, CN

Analyzing mechanism of accelerometer, electrical analogue of capacitive force-balanced accelerometer used in HSPICE simulator has been developed. Comparing to the former equivalent circuit, we use acceleration instead of displacement as input variable. Thus we can [...]

Spice-like Simulation Using Real Devices Instead of their Mathematical Models

Denisenko V.V., Research Laboratory of Design Automation, RU

Modern Spice-like circuit simulators use increasingly accurate and sophisticated analytical models of components. But the validity of models, that is the probability that the procedure of the model verification is true, still remains very poor. [...]

Modeling and Simulation of a Stiffness-Controlled Micro-Bridge Resonator

Verjus F., Bourouina T., Belhaire E., Mauduit N., Bosseboeuf A., IEF-CNRS, FR

This paper deals with the modelin and simulation of electrical stiffness control of a micro-bridge. Stiffness variations are obtained by compressive stresses that result from Joule heating. The micro-bridge is slaved to resonance in order [...]

Dynamic Modelling and Simulation of Microelectromechanical Devices with a Circuit Simulation Program

Veijola T., Kuisma H., Lahdenperä J., Helsinki University of Technology, FI

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. [...]

Simulation of Electrothermal MOS Circuits Using Saber

Liu C.C., Carlen E.T., Wise K.D., Mastrangelo C.H., University of Michigan, US

In this paper we present a simple methodology for simulating small to medium sized circuits where electrical and thermal equations are solved simultaneously using Saber, a commercial, general purpose simulator. Dynamic electrothermal models have been [...]

Network-Type Modeling of Micromachined Sensor Systems

Lorenz G., Neul R., Robert Bosch GmbH, DE

This paper describes the development of networktype models for the simulation of micromechanical components such as spatial beams and masses. The models were coded in MASTÆ for the SABERÆ simulator and their accuracy was compared [...]

Simulation of Mixed-Signal Systems in Standard VHDL

Grätz H., Fischer W-J, Fraunhofer-Institute of Microelectronic Circuits and Systems, DE

Historically, the analogue and digital parts of a hardware design have been modelled and simulated in different environments and could not be combined in a single simulator. On the other hand, if a design contains [...]

Inductance Extraction by Means of the Monte Carlo Method

Leonhardt G., Hager C., Regli P., Fichtner W., ETH-EPFL, CH

This paper presents a novel inductance extraction procedure which is based on a Monte Carlo sampling technique. Partial inductances for static current distributions can be computed efficiently and with small memory requirements, thus enabling the [...]