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Tool eases verification of MEMS devices

Posted: 02 Feb 2012  Print Version  Bookmark and Share

Keywords:MEMS  design  verification  software  tool 

Coventor Inc. releases the CoventorWare solution for MEMS design verification and optimisation that claims more complete and accurate verification of state-of-the-art MEMS designs by capitalizing increased computing power and software algorithm advancements.

CoventorWare 2012 offers 64bit support and a hex-dominant extrude meshing capability. It includes a new Python scripting interface for its suite of MEMS field solvers and a new intuitive user interface, both targeted to automate the set-up, execution and post-processing of simulations.

CoventorWare is a part of Coventor's MEMS design automation platform for the evaluation of design concepts, optimisation and MEMS+IC integration. It is used for verification and optimisation of device designs starting from layout through analysis of MEMS-specific multi-physics, such as coupled electro-mechanics, gas damping, anchor losses, thermo-elastic damping, and manufacturing-induced stress gradients. It is focused on solving the big verification challenges faced by MEMS designers developing the next generation of MEMS devices.

With the increased memory capacity of 64bit computing, CoventorWare users can now simulate more complex designs and obtain higher accuracy with finer meshes. Full 64bit support has been implemented across the entire Coventor software suite, including the solid modeler, preprocessor and meshing, visualizer and all MEMS solvers. A single installation provides both 32- and 64bit support that automatically runs in 64bit mode on a 64bit OS.

The CoventorWare 2012 hex-dominant extrusion meshing option also increases simulation capacity and is said to be ideal for typical MEMS structures, which are made up of fairly thin, high aspect ratio, stacked layers of materials perforated with release etch hole patterns. It automatically generates meshes that have uniform density and quality, unlike competing solutions that generate very inefficient tetrahedryl meshes or require extensive user involvement to produce an efficient hex-only mesh. This new capability reduces the number of mesh elements required for typical MEMS devices by as much as 20 to 40 per cent, making it possible to simulate entire multi-axis inertial MEMS sensors with 100s of electrostatic comb fingers.

Task automation
The CoventorWare's Python scripting interface for field solvers lets users automate repetitive tasks and perform multi-dimensional parametric studies and other types of analyses. The tool lets users set up simulations via the graphical user interface and then automatically generate Python scripts, eliminating the need to write scripts from scratch. Additionally, they can combine automatically generated scripts to automate series of simulations and post-processing tasks, while also benefiting from full access to the extensive numerical computation and plotting capabilities of the widely used Python language.

Python scripts can be executed from the new CoventorWare console, which is a unified graphical interface for accessing all CoventorWare functionality. The console provides access to all simulation management functions in a single window while remaining compatible with the classic user interface, ensuring that both new and existing users can quickly become productive. The console also simplifies simulation setup for the enhanced versions of the MemElectro, MemMech, CoSolveEM, HamonicEM and DampingMM solvers provided with the CoventorWare 2012 software release.

The CoventorWare 2012 software is already shipping.





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