Method and device for detecting resonance frequency of linear motor

A resonant frequency, linear motor technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of low use efficiency, the driving signal has a pause, the motor cannot make full use of the driving time, etc., and achieve the effect of improving the use efficiency.

Active Publication Date: 2020-12-15
AAC TECH NANJING
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  • Abstract
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  • Claims
  • Application Information

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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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  • Method and device for detecting resonance frequency of linear motor
  • Method and device for detecting resonance frequency of linear motor
  • Method and device for detecting resonance frequency of linear motor

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Embodiment Construction

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the drawings. However, those skilled in the art can understand that in various embodiments of the present invention, many technical details are put forward in order to make readers better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed by the present invention can be realized.

[0023] The first embodiment of the 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; Controlling the motor to vibrate under the driving signal added with the multi-frequency noise, and detecting characteristic physical quantities...

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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] The embodiment of the invention relates to the field of motor control, in particular to a method and a device for detecting the resonance frequency of a motor. technical background [0002] Motor is the basic component of vibration feedback in mobile equipment, usually including rotary motor, piezoelectric motor and linear motor. Among them, linear motor has the advantages of small size, long life, low power consumption and fast response time. It has absolute advantages in providing tactile feedback related to applications and scenes. The basic working principle of linear motor is to use ampere force of energized coil in magnetic field to drive vibrating block to vibrate. The resonance frequency of the vibrating block in a 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 of the motor will be great and the vibration will achieve the best effect; How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/20
CPCH02K11/20
Inventor 耿浩王尧吴睿
Owner AAC TECH NANJING
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