Method and device for signal processing

A signal processing and signal technology, applied in the field of signal processing, can solve problems such as low power spectral density signal-to-noise ratio and weak signal noise reduction ability

Active Publication Date: 2017-07-04
THE HONG KONG POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although the calculation of the power spectral density is simple, the noise reduction ability for the signal is weak
In the process of ultra-precision machining, the cutting force signal is affected by complex environmental factors and contains more noise. The signal-to-noise ratio of the power spectral density calculated by the traditional method is low, which is not conducive to obtaining the tool tip by analyzing the cutting force spectrum. Vibration information

Method used

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  • Method and device for signal processing
  • Method and device for signal processing
  • Method and device for signal processing

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Embodiment Construction

[0038] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.

[0039] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in ...

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Abstract

The present invention discloses a method and device for signal processing, belonging to the signal processing technology field. The method comprises: obtaining double dual-correlation function of signals, obtaining the auto-correlation function of the signals according to a correlation function; performing Fourier transform of the auto-correlation function, and obtaining double dual-correlation function of signals. The method and device for signal processing can realize the noise reduction processing of the signals including the noise.

Description

technical field [0001] The present disclosure relates to the technical field of signal processing, and in particular, to a method and device for signal processing. Background technique [0002] As a stable and reliable source of information in the machining process, the cutting force, its magnitude and dynamic changes reflect the interaction between the tool and the workpiece and the formation process of the workpiece surface during the cutting process. A large number of research results show that every small change in the cutting state can be reflected by the change of the cutting force, and the detection of cutting force is one of the most researched and applied monitoring methods at home and abroad. By monitoring the real-time changes in the cutting force during the machining process, through time series analysis or related data signal processing, it can be used to conduct research on scientific issues related to the cutting process, such as cutting mechanism research, pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F17/14
CPCG06F17/141G06F30/17G06F2119/10G06F2119/18
Inventor 李荣彬陈增源李莉华袁伟
Owner THE HONG KONG POLYTECHNIC UNIV
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