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Actuator control circuit and method for controlling an actuator

A technology for controlling circuits and actuators, applied in general control systems, program control, computer control, etc., can solve problems such as the unexpected stabilization time of actuators, the inability of actuator control circuits to effectively compensate for the induced EMF of actuators, etc. , to achieve the effect of reducing the stabilization time

Pending Publication Date: 2019-11-01
SEMICON COMPONENTS IND LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention is that conventional actuator control circuits cannot effectively compensate for the induced EMF at the actuator, which results in an undesired settling time of the actuator

Method used

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  • Actuator control circuit and method for controlling an actuator
  • Actuator control circuit and method for controlling an actuator
  • Actuator control circuit and method for controlling an actuator

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Embodiment Construction

[0025] The technology can be described in terms of functional block components and various processing steps. Such functional blocks may be realized by any number of components configured to perform the specified functions and achieve various results. For example, the present technology can employ various actuators, sensors, lenses, semiconductor devices such as transistors and capacitors that can perform various functions. Furthermore, the technology may be implemented in conjunction with any number of systems, such as automotive, aerospace, medical, scientific, surveillance, and consumer electronics, and these systems described are merely exemplary applications of the technology. In addition, the present technology may employ any number of conventional techniques for capturing image data, sampling image data, processing image data, and the like.

[0026] Methods and apparatus for actuator control according to various aspects of the present technology may operate in conjuncti...

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Abstract

Various embodiments of the present technology may comprise methods and apparatus for actuator control. The methods and apparatus may comprise a control circuit adapted to generate a control signal andvarious signal processing functions to generate a calibration code that is used to calibrate the control circuit. The apparatus for actuator control may comprise an induced voltage detection circuitto detect an induced voltage and a calibration circuit to generate the calibration code, which is used to calibrate the induced voltage detection circuit. The technical effect achieved by the presentinvention is to provide a control circuit that is capable of effectively compensating for induced EMF at the actuator, thereby reducing settling time of the actuator.

Description

technical field [0001] The present invention relates to actuator control circuits and methods for controlling actuators. Background technique [0002] Electronic devices such as mobile phones, cameras and computers often combine lens modules with image sensors for capturing images. Many imaging systems employ various control and / or autofocus methods and various signal processing techniques to improve image quality by adjusting the position of the lens relative to the image sensor. [0003] Control and / or autofocus systems typically operate in conjunction with actuators to move the lens into an optimal position to improve image quality. Many electronics utilize low-noise linear motion, such as linear actuators, to facilitate autofocus and / or repositioning of lenses. However, due to the mechanical characteristics of linear actuators, the settling time of the actuator can be greater than desired due to the voltage (induced electromotive force (EMF)) that can be induced by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257G02B7/08G02B27/28H04N23/65H04N23/68G02B7/09H04N23/67
Inventor 田渕善久
Owner SEMICON COMPONENTS IND LLC