“…While self-testing is already widely used in commercial inertial MEMS, auto-calibration systems, to the author's knowledge, are still inexistent. Calibration during life cycle requires consideration of long-term effects, such as dielectric charging (Rocha et al 2003;Rottenberg et al 2007), which results from continuous bias-loading of the accelerometer movable part, stress relaxation and Young's Modulus changes. Since these effects will have an impact on the pullin voltage, it is always possible through new pull-in voltage measurements to recalculate the parameters of interest (in this case only E and b, since there won't be any changes on the geometry and mass-a is constant).…”