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公开(公告)号：US11671709B2
公开(公告)日：2023-06-06
申请号：US17551173
申请日：2021-12-14
发明人： Yaoguo Zhang , Bo Xia , Yulin Zhang
CPC分类号： H04N23/685 , H02K11/21
摘要： 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.
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公开(公告)号：US20220191373A1
公开(公告)日：2022-06-16
申请号：US17551173
申请日：2021-12-14
发明人： Yaoguo Zhang , Bo Xia , Yulin Zhang
摘要： 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.
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公开(公告)号：US20240272214A1
公开(公告)日：2024-08-15
申请号：US18638750
申请日：2024-04-18
发明人： Yaoguo Zhang , Bo Xia , Bo Nie , Yulin Zhang
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： The present invention relates to the microelectronics domain, specifically to a capacitance measurement circuit and method designed to enhance precision in capacitance measurements. The circuit comprises a capacitor under test, which is connected at one end to the output of an excitation circuit and at the other end to the input of an adjustment circuit. It includes a first timing switch circuit connected between the input of a first amplification circuit and the output of the adjustment circuit, and a second timing switch circuit connected between the input of a second amplification circuit and the output of the adjustment circuit, with the first and second timing switch circuits operating alternately. The invention also features a capacitance detection circuit that consists of a differential amplifier and a comparator.
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公开(公告)号：US20240146169A1
公开(公告)日：2024-05-02
申请号：US18401454
申请日：2023-12-30
发明人： Yaoguo Zhang , Bo Xia , Yulin Zhang
CPC分类号： H02K41/02 , G03B13/34 , H02K11/0094
摘要： The invention provides a focusing motor, a closed-loop control method for the focusing motor, and a camera device. The focusing motor includes a mover bracket and a mover plate mounted thereon, a stator and first stator plates and second stator plates mounted thereon, and a processing unit connected to the mover pole plate, the first stator plate and the second stator plate. The mover pole plate is positioned opposite the first stator plate and the second stator plate, and the facing areas change with the movement of the mover bracket. The processing unit controls the movement of the mover bracket in the focusing direction based on the capacitance signals formed by the mover pole plate and the first stator plate as well as the capacitance signals formed by the second stator plate.
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公开(公告)号：US20220187563A1
公开(公告)日：2022-06-16
申请号：US17551174
申请日：2021-12-14
发明人： Yaoguo Zhang , Bo Xia , Yulin Zhang
摘要： In accordance with the present disclosure, a method for controlling an autofocus actuator is provided such that the actual position of the autofocus actuator can be measured using capacitance sensing. In some embodiments, a rotor plate attached to a rotor and a stator plate attached to a stator in the autofocus actuator can be used to create a capacitance. When the rotor moves, a capacitance change value between the rotor plate and the stator plate can be measured. In these embodiments, the cost and the form factor of the aforementioned autofocus actuator are reduced compared to implementation of magnetic field sensors in the autofocus actuator.
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