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Linear motor resonance frequency detecting method and device

A technology of resonant frequency and linear motor, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of low efficiency, pause of driving signal, and inability to make full use of the driving time of the motor, and achieve the effect of improving the efficiency of use

Active Publication Date: 2018-08-03
AAC TECH NANJING
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The inventors have found that there are at least the following problems in the prior art: the prior art needs to determine the resonant frequency of the motor through the information detected when the motor vibrates and stops, resulting in a pause in the drive signal, and the motor cannot make full use of the drive time. low efficiency

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  • Linear motor resonance frequency detecting method and device
  • Linear motor resonance frequency detecting method and device
  • Linear motor resonance frequency detecting method and device

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in each implementation manner of the present invention, many technical details are proposed in order to enable readers to better understand the present invention. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in the present invention can also be realized.

[0023] The first embodiment of the present invention relates to a method for detecting the resonance frequency of a linear motor. The core of this embodiment is to add multi-frequency noise to the driving signal of the motor; control the motor to vibrate under the driving signal after adding...

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Abstract

The embodiment of the invention relates to the field of motor control, and discloses a linear motor resonance frequency detecting method and device. The linear motor resonance frequency detecting method provided by the embodiment of the invention comprises the steps that S10 multi-frequency noise is added to a drive signal of a motor; S20 the motor is controlled to vibrate under the drive signal with the multi-frequency noise, and the characteristic physical quantity corresponding to each frequency is detected when the motor vibrates; and S30 the frequency corresponding to the detected maximumcharacteristic physical quantity is used as resonance frequency. The embodiment of the invention further discloses a linear motor resonance frequency detecting device. According to the embodiment ofthe invention, the resonance frequency of the linear motor is detected.

Description

technical field [0001] Embodiments of the present invention relate to the field of motor control, and in particular to a method and device for detecting the resonant frequency of a motor. Background technique [0002] Motors are the basic components that provide vibration feedback in mobile devices, and usually include rotary motors, piezoelectric motors, and linear motors. Among them, linear motors have absolute advantages in providing tactile feedback functions related to applications and scenes due to their small size, long life, low power consumption, and fast response time. The basic working principle of the linear motor is to use the ampere force received by the energized coil in the magnetic field to drive the vibration block to vibrate. The resonant frequency of the vibrating block in the linear motor is equal to the natural frequency, that is: when the frequency of the driving signal is equal to the natural frequency of the motor, the vibration sense generated by t...

Claims

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Application Information

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IPC IPC(8): H02K11/20
CPCH02K11/20
Inventor 耿浩王尧吴睿
Owner AAC TECH NANJING
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