An observer design for nanoforce estimation with thermal noise attenuation

Abstract

International audienceThe problem of estimating forces at a very low scale is considered through the example of an electromechanical sensor. The considered dynamical model of the sensor includes the effect of thermal noises generated by the measurement device itself, which are known to be a problem for an accurate measurement at such a scale. A nonlinear observer is proposed as a solution for an appropriate force estimation with noise attenuation. The success of the method is illustrated in a realistic simulation configuration