Patent ID: 11906693
Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The probe according to claim 1, further comprising a back-end circuit module, the back-end circuit module comprising a capacitive sensing unit, a feedback control unit, and an electrostatic feedback actuator;
wherein the capacitive sensing unit is used to detect the differential capacitance signal, and to convert the differential capacitance signal into an analog voltage signal;
the feedback control unit is used to determine the amount of deviation of the proof mass from a balanced position according to the analog voltage signal, and to calculate, via a feedback adjustment output, a feedback voltage required for the proof mass to return to the balanced state;
the electrostatic feedback actuator is used to receive the feedback voltage, and to generate, according to a satisfied relationship between the feedback voltage and an electrostatic feedback force, an electrostatic feedback force for controlling the proof mass to remain at the balanced position.