Micromechanics
We have seen a great leap forward in micromechanical developments over the last few years. This specialist field of microtechnology deals with the design, production and application of three-dimensional structures and systems with micrometer dimensions.
We differentiate between simple structures (e.g. grids, holes, channels), sensors, actuators (e.g. relays, switches, valves, pumps) and microsystems (micromotors, printheads). Some of the production methods used are also utilized in microchip manufacture (e.g. galvanising procedures, laser technology) or for high-precision mechanical procedures (e.g. micro-chipping, micro-turning).
The micromechanical systems which have already been realized include electromechanical switches or high frequency applications, mechanically adjustable condensers, acceleration sensors (e.g. to trigger airbags) and rotation rate sensors (rotation sensors, gyroscopes) which are used in navigation or driver assistance systems.
Great things have already been achieved and this technology promises revolutionary successes for the future.
Piezomotor: Motion by Vibration
A Piezo generates micro-vibrations in the aluminum frame of this ELLIPTIC motor. At around 80 kHz, the vibrations form an ellipse that can drive a wheel in either direction in small steps(up to 300mm/s)when it is pressed against the point.
This simulation exaggerates the micro vibration to demonstrate the elliptical drive effect.
