Patent ID: 11914768
Assignee: ADHAWK MICROSYSTEMS INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. The method of claim 15 wherein the first resonant frequency is estimated by operations that further include:
establishing the first resistance as a resistance of the second actuator element;
establishing a second resistance as a resistance of the fourth actuator element;
applying a second test drive to the third actuator element to induce a second oscillation on the second axis;
enabling the first axis to ring down from the first oscillation during a ring-down period;
enabling the second axis to ring down from the second oscillation during the ring-down period;
providing an electrical signal based on a difference between the first resistance and second resistance during the ring down period; and
estimating at least one of the first and second resonant frequencies based on a fast-Fourier transform of the electrical signal.