TY - GEN
T1 - Control and Estimation in Force Feedback Sensors
AU - Åström, Karl Johan
PY - 2011
Y1 - 2011
N2 - The principle of force feedback is to design a sensor as a feedback system where the action of the measured variable is compensated by a force generated by feedback. Force feedback has contributed significantly to improve the quality of sensors. A characteristic feature of MEMS devices is that they are subject to random disturbances, such as Brownian motion, Johnson-Nyquist noise, and tunneling noise. Variations in device parameters must also be accounted for. In this paper we will discuss principles for designing control and estimation algorithms for instruments based on MEMS devices with force feedback. The fact that the final goal is to design an instrument gives an interesting formulation of the problem. It is shown that shaping of the frequency response can be separated from attenuation of disturbance. The principles have been applied to design of a tunneling accelerometer. The experimental work was done at Professor Turner's laboratory at the University of California, Santa Barbara.
AB - The principle of force feedback is to design a sensor as a feedback system where the action of the measured variable is compensated by a force generated by feedback. Force feedback has contributed significantly to improve the quality of sensors. A characteristic feature of MEMS devices is that they are subject to random disturbances, such as Brownian motion, Johnson-Nyquist noise, and tunneling noise. Variations in device parameters must also be accounted for. In this paper we will discuss principles for designing control and estimation algorithms for instruments based on MEMS devices with force feedback. The fact that the final goal is to design an instrument gives an interesting formulation of the problem. It is shown that shaping of the frequency response can be separated from attenuation of disturbance. The principles have been applied to design of a tunneling accelerometer. The experimental work was done at Professor Turner's laboratory at the University of California, Santa Barbara.
U2 - 10.1007/978-3-642-22173-6_13
DO - 10.1007/978-3-642-22173-6_13
M3 - Paper in conference proceeding
SN - 978-3-642-22172-9
VL - 413
SP - 219
EP - 233
BT - Control Technologies for Emerging Micro and Nanoscale Systems (Lecture Notes in Control and Information Sciences)
A2 - Eleftheriou, Evangelos
A2 - Moheimani, S. O. Reza
PB - Springer
T2 - Workshop on Dynamics and Control of Microscale and Nanoscale Systems
Y2 - 10 December 2009 through 11 December 2009
ER -