LiDAR mirror control method and device and LiDAR
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United States of America Patent
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Dec 27, 2022
Grant Date -
Jul 14, 2022
app pub date -
Mar 29, 2022
filing date -
Sep 30, 2019
priority date (Note) -
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Abstract
Embodiments of this application disclose a mirror control method and device and a LiDAR, pertaining to the field of LiDAR. The method includes: outputting a control signal configured to control a mirror to scan; detecting a feedback signal of the scanning mirror; determining an actual amplitude gain of the mirror based on the feedback signal, and determining an error of the actual amplitude gain relative to a preset amplitude gain threshold; and determining a frequency adjustment based on the error, adjusting frequency based on the frequency adjustment, and obtaining an output signal. In the embodiments of this application, stability of a scanning angle of the mirror can be maintained when resonance frequency of the mirror deviates.
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