Scalable system for tracking and exciting the resonant frequency of resonant acoustic MEMS actuators
AssigneeTrudell Medical International
InventorsAndrew Dittmer, Michal Fulmyk, Benjamin Russell, Bharanidharan Thamizhchelvan
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Abstract
A system and method for use in matching a source to a dynamic impedance electrical load is described. The system may include a zero voltage switching amplifier and a variable signal generator, where the zero voltage switching amplifier is in communication with a resonant load. The system also includes a microcontroller for executing an algorithm that causes the microcontroller to locate a resonant frequency of the resonant load by sampling frequencies by changing a frequency of the variable signal generator and recording sensor data, and then correlating the collected sensor data (minima) to the resonance.
Claims14
A system comprising:
- a zero voltage switching amplifier;
- a variable signal generator in communication with the zero voltage switching amplifier;
- a resonant load in communication with the zero voltage switching amplifier;
- a sensor associated with the zero voltage switching amplifier and configured to measure an operational parameter of the zero voltage switching amplifier;
- a microcontroller in communication with a memory, wherein the memory comprises instructions for causing the microcontroller to execute:
- a hill-climbing algorithm, wherein the hill-climbing algorithm causes the microcontroller to locate a resonant frequency of the resonant load by sampling frequencies by changing a frequency of the variable signal generator and recording sensor data, then correlating the collected sensor data (minima) to the resonance.
A method comprising:
- measuring, with a sensor associated width a zero voltage switching amplifier, an operational parameter of the zero voltage switching amplifier;
- and
- executing, with a microcontroller, a hill-climbing algorithm that causes the microcontroller to locate a resonant frequency of a resonant load in communication with the zero voltage switching amplifier by sampling frequencies by changing a frequency of a variable signal generator in communication with the zero voltage switching amplifier, recording sensor data, and then correlating the collected sensor data (minima) to the resonance.
Dependencies are inferred from the claim text.