Multi-frequency excitation
AssigneeKing Abdullah University of Science and Technology
InventorMohammad Younis
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Abstract
Embodiments of multi-frequency excitation are described. In various embodiments, a natural frequency of a device may be determined. In turn, a first voltage amplitude and first fixed frequency of a first source of excitation can be selected for the device based on the natural frequency. Additionally, a second voltage amplitude of a second source of excitation can be selected for the device, and the first and second sources of excitation can be applied to the device. After applying the first and second sources of excitation, a frequency of the second source of excitation can be swept. Using the methods of multi-frequency excitation described herein, new operating frequencies, operating frequency ranges, resonance frequencies, resonance frequency ranges, and/or resonance responses can be achieved for devices and systems.
Claims20
A method of multi-frequency excitation of a microelectromechanical (MEMS) or nanoelectromechanical (NEMS) device, comprising:
- applying a first source of excitation to the device, the first source of excitation having a relatively small fixed frequency;
- applying a second source of excitation to the device;
- and
- sweeping a frequency of the second source of excitation around a natural frequency of the device to induce at least one combination resonance in the device based on a combination of the frequency of the second source of excitation and the relatively small fixed frequency of the first source of excitation.
A system for multi-frequency excitation, comprising:
- a microelectromechanical (MEMS) or nanoelectromechanical (NEMS) device;
- a first source of excitation, the first source of excitation having a fixed frequency applied to the device;
- and
- a second source of excitation, a frequency of the second source of excitation applied to the device and being swept to induce at least one combination resonance in the device based on a combination of the frequency of the second source of excitation and the fixed frequency of the first source of excitation.
A method of multi-frequency excitation of a device, comprising:
- determining a natural frequency of the device;
- selecting a first voltage amplitude of a first source of excitation for the device;
- selecting a fixed frequency of the first source of excitation based on the natural frequency;
- selecting a second voltage amplitude of a second source of excitation for the device;
- applying the first source of excitation to the device;
- applying the second source of excitation to the device;
- and
- sweeping a frequency of the second source of excitation.
Dependencies are inferred from the claim text.