TY - JFULL AU - Mixed Frequency Excitation of an Electrostatically Actuated Resonator PY - 2015/7/ TI - Mixed Frequency Excitation of an Electrostatically Actuated Resonator T2 - International Journal of Electrical and Computer Engineering SP - 579 EP - 586 VL - 9 SN - 1307-6892 UR - https://publications.waset.org/pdf/10001783 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 102, 2015 N2 - We investigate experimentally and theoretically the dynamics of a capacitive resonator under mixed frequency excitation of two AC harmonic signals. The resonator is composed of a proof mass suspended by two cantilever beams. Experimental measurements are conducted using a laser Doppler Vibrometer to reveal the interesting dynamics of the system when subjected to twosource excitation. A nonlinear single-degree-of-freedom model is used for the theoretical investigation. The results reveal combination resonances of additive and subtractive type, which are shown to be promising to increase the bandwidth of the resonator near primary resonance frequency. Our results also demonstrate the ability to shift the combination resonances to much lower or much higher frequency ranges. We also demonstrate the dynamic pull-in instability under mixed frequency excitation. ER -