公开(公告)号：US20220221711A1

公开(公告)日：2022-07-14

申请号：US17707931

申请日：2022-03-29

Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.

Inventor： Shaodong YANG ,  Jingyang ZHENG

IPC: G02B26/10 ,  G01S7/481

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.