Anti-shake motor, closed-loop control method of anti-shake motor, and camera shooting equipment

Abstract

The embodiment of the invention relates to the technical field of camera shooting, and discloses an anti-shake motor, a closed-loop control method of the anti-shake motor and camera shooting equipment. The anti-shake motor comprises a rotor, a support moving along with the rotor in the preset direction, a rotor electrode plate arranged on the support, a stator assembly arranged on the periphery ofthe support in a surrounding mode, a stator electrode plate arranged on the stator assembly and a processing unit, and the rotor electrode plate and the stator electrode plate are oppositely arranged. The relative positions of the rotor electrode plates and the stator electrode plates are changed along with movement of the support, and the processing unit is connected with the rotor electrode plates and the stator electrode plates and used for controlling the rotor to move in the preset direction according to capacitance signals of capacitance formed by the rotor electrode plates and the stator electrode plates. Therefore, the closed-loop control of the anti-shake motor is realized, the cost of the motor is reduced, and the internal volume of the motor is saved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of imaging, and in particular to an anti-shake motor, a closed-loop control method for the anti-shake motor, and an imaging device. Background technique [0002] In order to improve the picture quality of the camera equipment during shooting, an optical anti-shake technology may be used in the camera equipment to perform motion compensation for the shaking of the camera equipment itself. When performing motion compensation, the gyroscope in the anti-shake motor in the camera equipment is usually used for shake detection, and then the lens is moved in the opposite direction through the anti-shake motor to compensate for image blur caused by camera shake. [0003] The inventors have found that there are at least the following problems in the motion compensation in the related art: In the related art, after the shake of the lens is detected, the Hall sensor and the corresponding magnet use...

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Problems solved by technology

[0003] The inventors have found that there are at least the following problems in the motion compensation in the related art: In the related art, after the shake of the lens is detected, the Hall sensor and the corresponding magnet used for sensing are used to monitor the real-time movement of the mover in the anti-shake motor. Position detection, however, installing Hall sensors and sensing magnets inside the motor will occupy a large internal space, which is not conducive to the miniaturization of the motor

In addition, since the Hall sensor and the sensing magnet occupy a large space inside the motor, the volume of the magnet and coil set up to drive the mover is limited under the premise that the internal space of the motor is limited, which is not conducive to improving the performance of the motor. The driving force of the motor reduces the compensation efficiency

Finally, the cost of the Hall sensor is relatively high, which is not conducive to reducing the cost of the anti-shake motor

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