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Motor nonlinear distortion compensation method and device and computer readable storage medium

A technology of nonlinear distortion and compensation method, which is applied in the direction of electric speed/acceleration control, etc., and can solve problems such as poor compensation effect

Pending Publication Date: 2020-07-28
AAC TECH PTE LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a motor nonlinear distortion compensation method, device and computer-readable storage medium, which can solve the problem in the prior art that the nonlinearity of parameters needs to be accurately measured and the compensation effect is not good

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  • Motor nonlinear distortion compensation method and device and computer readable storage medium
  • Motor nonlinear distortion compensation method and device and computer readable storage medium
  • Motor nonlinear distortion compensation method and device and computer readable storage medium

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Embodiment Construction

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner” and “outer” are based on the orientation shown in the drawings Or the positional relationship is only for the convenience of de...

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Abstract

The invention discloses a motor nonlinear distortion compensation method and device and a computer readable storage medium. The method comprises the steps of: exciting a motor system through a logarithm sweep signal x (n), and collecting the acceleration signal y (n) of the motor system through an accelerometer; obtaining an inverse filtering signal q (n) through the logarithm swept-frequency signal x (n) and the acceleration signal y (n); and eliminating the second to p-th harmonic distortion of the m-order component in the inverse filtering signal q (n) so as to compensate the nonlinear distortion of the acceleration of a motor through compensation filters with different orders. The motor system is used as a black box, and the nonlinear distortion of the nonlinear system model of the Volterra filter is numerically compensated, so that the nonlinear distortion compensation can be performed on the premise of not knowing a physical model.

Description

Technical field [0001] The present invention relates to the technical field of nonlinear distortion compensation, and more specifically, to a method, device and computer-readable storage medium for motor nonlinear distortion compensation. Background technique [0002] Linear resonant exciters (LRA, commonly known as motors) are becoming more and more popular in the fields of smart phones, smart watches and tablet computers. When modeling a motor system, usually only the linear part is considered and its nonlinear distortion is ignored; but when the nonlinear distortion part of the motor is relatively large, its impact cannot be ignored, and certain methods must be used for modeling And compensation. The conventional method is to perform nonlinear modeling on the parameters of the motor, and then compensate according to the nonlinearity of the parameters. This method needs to accurately measure the nonlinearity of the parameters, otherwise the compensation effect is not good. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D13/62
CPCG05D13/62
Inventor 向征郭璇李涛
Owner AAC TECH PTE LTD
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