Motor steady-state single-frequency distortion compensation method and motor steady-state single-frequency distortion compensation device

A distortion compensation and motor technology, applied in the field of distortion compensation, can solve problems such as signal distortion and achieve the effect of reducing adverse effects

Pending Publication Date: 2020-07-31
AAC TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many audio and vibration electronic devices have certain nonlinear characteristics, resulting in varying degrees of distortion of the signal output by the device

Method used

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  • Motor steady-state single-frequency distortion compensation method and motor steady-state single-frequency distortion compensation device
  • Motor steady-state single-frequency distortion compensation method and motor steady-state single-frequency distortion compensation device
  • Motor steady-state single-frequency distortion compensation method and motor steady-state single-frequency distortion compensation device

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Experimental program
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Effect test

Embodiment 1

[0048] This embodiment provides a motor steady-state single-frequency distortion compensation method, the method comprising:

[0049] Step S10: a construction step, obtaining the expected acceleration spectrum according to the excitation signal and the linear model of the motor; specifically, the step 10 specifically includes:

[0050] Step S11: generating a steady-state single-frequency excitation signal;

[0051] In this embodiment, the excitation signal is a specified voltage amplitude V p =8, frequency F 0 =60Hz, single-frequency sine wave u(t) of period T=100. The measured acceleration waveform and its frequency spectrum under this parameter are as follows: Image 6 , Figure 7 shown; the excitation voltage of the excitation signal can be in any of wav, mat, txt, act formats, and the source of the excitation signal can be a computer, a mobile device or other devices with signal generation and transmission functions in this field Hardware and software equipment, in th...

Embodiment 2

[0092] This embodiment provides a motor steady-state single-frequency distortion compensation device, which is used to implement the distortion compensation method in Embodiment 1, including:

[0093] The signal generating device 1 is used to generate a steady-state single-frequency excitation signal and send it to a single motor; the signal generating device can be a computer, a mobile device or other software and hardware devices with signal generating and sending functions in the field. In this implementation, the excitation signal is generated by a computer, and a signal collector 11 (NI-DAQ 4431) for collecting the excitation signal and a power amplifier 12 for amplifying the signal are also arranged between the signal generating device 1 and the motor unit 2 (AMP1, AMP2). The signal generating device 1 includes a generating module 13 for generating an excitation signal and a sending module 14 for sending the excitation signal to a single motor.

[0094] The motor unit 2...

Embodiment 3

[0099] This embodiment provides a terminal device 6, including a memory 61, a processor 62, and a computer program 63 stored in the memory 61 and operable on the processor 62, and the processor 62 executes the computer program At 63, the steps of realizing the motor steady-state single-frequency distortion compensation method of the first embodiment.

[0100] Exemplarily, the computer program 63 can be divided into one or more modules / units, and the one or more modules / units are stored in the memory 61 and executed by the processor 62 to complete this invention. The one or more modules / units may be a series of computer program 63 instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program 63 in the terminal device 6. For example, the computer program 63 can be divided into a construction module, an acquisition module and a compensation module (unit modules in the virtual device)...

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Abstract

The invention provides a motor steady-state single-frequency distortion compensation method, which comprises: a construction step: obtaining an expected acceleration frequency spectrum according to anexcitation signal and a motor linear model; an obtaining step: obtaining the voltage frequency spectrum of the excitation signal according to Fourier transform, and collecting the actual motor acceleration of a motor monomer to obtain an actual measurement acceleration frequency spectrum and a total harmonic distortion value of the actual measurement acceleration frequency spectrum; and a compensation step: carrying out iterative calculation according to the total harmonic distortion value to obtain a correction voltage with minimum distortion. With the method and the device, the adverse effect of nonlinearity of the motor on the tactile experience is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of distortion compensation, in particular to a motor steady-state single-frequency distortion compensation method. 【Background technique】 [0002] With the development of mobile technology, the number of smart mobile devices continues to increase. The Linear Resonance Actuator (Linear Resonance Actuator, LRA, commonly known as motor) used to control the touch feedback function is used in smart mobile devices such as smart phones, smart watches, and tablets. applications are becoming more and more popular. [0003] Many audio and vibration electronic devices have certain nonlinear characteristics, resulting in varying degrees of distortion in the output signals of the devices. As a vibration device, the vibrator motor has its own nonlinearity, which will cause the actual vibration effect of the motor to deviate from the expected vibration effect, especially for motor types with large nonlinearity, which wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/02
CPCH02P7/02
Inventor 李涛向征郭璇
Owner AAC TECH PTE LTD
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