Location: Stephenson Building, room F16 (first floor)
Time/Date: 6th May 2010, 16:00
A DSP based embedded sysem was developed to control a MEMs ring vibrating gyroscope, which consists of digital phase lock loop, automatic gain control, and phase sensitive demodulation for the sensing of turn rate, a rate of less than 1 degree per second can be resolved.
Based on this platform, parametric amplifications of both the primary and secondary modes of vibration were investigated. Up to 20 times stable magnification of the primary mode has been achieved, the secondary mode amplification has proved very complex to reach the phase requirements due to frequency mistuning between the two modes.
This seminar will look at some of the challenges associated with electrically driving & sensing MEMS devices operating in the MHz frequency region. A solution consisting of analogue electronics & DSP software will be discussed for a MEMS device already developed by Newcastle University.
Published: 21st April 2010