Anti-Vibration Actuator Control Method
AssigneeChipsemi Semiconductor (Ningbo) Co., Ltd.
InventorsYaoguo Zhang, Bo Xia, Yulin Zhang
Life of this patent
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Abstract
In accordance with the present disclosure, a method for controlling an anti-vibration actuator is provided such that the position of the applied opposite rotation in a gyro stabilization process can be measured using capacitance sensing. In some embodiments, a rotor plate attached to a rotor and a stator plate attached to a stator can be used to create a capacitance. When the rotor moves, a distance change value of the rotor can be calculated based on the capacitance measured between the rotor plate and the stator plate. In these embodiments, the cost and the form factor of the aforementioned anti-vibration actuator are reduced compared to implementation of magnetic field sensors in the anti-vibration actuator.
Claims7
A method for controlling an anti-vibration actuator based on a capacitance measured between a rotor plate attached to a rotor and a stator plate attached to a stator, and the method comprising:
- moving the rotor towards a predetermined direction for a predetermined distance while keeping the stator stationary;
- measuring, at a capacitance sensing circuit, the capacitance between the rotor plate and the stator plate;
- calculating, at a processing unit, a distance change value of the rotor based on the capacitance measured at the capacitance sensing circuit;
- determining, at the processing unit, whether the distance change value matches the predefined distance;
- and
- controlling, at a rotor drive block, the rotor based on whether the distance change value matches the predefined distance.
Dependencies are inferred from the claim text.