Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ashwin A. Seshia"'
Autor:
Guillermo Sobreviela, Chun Zhao, Dongyang Chen, Ashwin A. Seshia, Hemin Zhang, Milind Pandit, Madan Parajuli, Jiangkun Sun
Publikováno v:
2021 IEEE 34th International Conference on Micro Electro Mechanical Systems (MEMS).
Mode-localized sensors have attracted great attention due to the high parametric sensitivity and common mode rejection to temperature drift. The reported results from such sensors has largely relied on operation in the linear regime. However, operati
Publikováno v:
Journal of Microelectromechanical Systems. 26:1196-1203
In this paper, we present the strongly nonlinear behavior of a 2-degree-of-freedom weakly coupled microelectromechanical systems (MEMS) resonator system in a mixed nonlinear regime, using a closed-loop phase feedback oscillator approach. Three out of
Parametric Noise Reduction in a High-Order Nonlinear MEMS Resonator Utilizing Its Bifurcation Points
Autor:
Cuong Do, Guillermo Sobreviela, Milind Pandit, Ashwin A. Seshia, Sijun Du, Chun Zhao, Xudong Zou
Publikováno v:
Journal of Microelectromechanical Systems. 26:1189-1195
An electrostatically actuated non-linear microelectromechanical systems (MEMS) resonator can describe double hysteresis behavior in the measured frequency response due to the interplay between electrical and mechanical non-linearities in the system.
© 2017 IEEE. For the first time, this paper demonstrates the cancellation of nonlinear response in weakly coupled resonators. It has been observed that by working in the region where the mechanical nonlinearity of the resonators and the electrical n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::041b2b820edfe90d75e6028eb9429c38
Autor:
Ashwin A. Seshia, Arif Mustafazade
Publikováno v:
2018 IEEE International Frequency Control Symposium (IFCS).
In this paper, we present an analog high-precision temperature controller designed to stabilize the temperature of MEMS inertial sensors with a short-term stability of better than $\pm 50 \ \mu^{\circ}\mathbf{K}$ and long-term stability of $\pm 250\
Publikováno v:
Journal of Microelectromechanical Systems. 24:997-1005
This paper presents a numerical study of the impact of process-induced variations on the achievable motional resistance $R_{x}$ of 1-D, 2-D, cyclic, and cross-coupled architectures of weakly coupled electrostatically transduced microelectromechanical
Autor:
Xudong Zou, Ashwin A. Seshia
Publikováno v:
Journal of Microelectromechanical Systems. 24:537-544
Linear models for oscillator noise predict an improvement in frequency stability with increasing quality factor. Although it is well known that this result does not apply to oscillators embedding nonlinear resonators, systematic experimental investig
Publikováno v:
2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFC).
In this paper, the amplitude and frequency stability of a mode-localized sensor are characterized in a closed loop setup. The system describes an absolute amplitude ratio sensitivity of 5250 to stiffness perturbations in linear operation. A stability
Autor:
Xudong Zou, Sijun Du, Ashwin A. Seshia, Boqian Sun, Fengtian Han, Chun Zhao, Guillermo Sobreviela-Falces
Publikováno v:
2017 IEEE 30th International Conference on Micro Electro Mechanical Systems (MEMS).
Microelectromechanical system (MEMS) oscillators are conventionally designed so that the resonator is operated within the linear regime. This paper investigates an optimal low noise point for a nonlinear MEMS oscillator where phase noise to frequency
Publikováno v:
Journal of Microelectromechanical Systems. 20:157-164
This paper reports the first detailed experimental evidence of the phenomena of eigenvalue loci veering and vibration mode localization in microelectromechanical resonator arrays subjected to weak electroelastic coupling. A rapid but continuous inter