Extraction Method of Rotational Speed of Vibration Data in the Dehydration Stage of Washing Machine Based on Average Amplitude Difference Function
A technology of vibration data and dehydration stage, applied in the control device of washing machine, vibration test, washing device, etc., can solve problems such as non-compliance
Active Publication Date: 2020-08-04
ANHUI UNIVERSITY OF ARCHITECTURE
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The researchers in the above-mentioned literature have conducted speed measurement research on the vibration data of the washing machine, but most of the research on the washing machine is to process the vibration data of the sensor located on the cylinder, which does not meet the requirements of the GB / T4288-2018 standard
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0081] In this embodiment, the vibration data is obtained by installing a vibration sensor on the washing machine cabinet, and the physical characteristics of the vibration data in the dehydration stage of the washing machine are fully studied. Aiming at the different characteristics of the rising control curve and the free attenuation section, a method using the average amplitude difference function ( AMDF) and differential threshold segmentation processing algorithm to extract the rotational speed corresponding to the vibration data in the dehydration stage, judge and cut off the rotational speed curve corresponding to the vibration data in the vibration data of the rotational speed rising period and the vibration data of the rotational speed decay period with too low energy, The three segments are integrated and the singular point is corrected to obtain the final speed curve of the vibration data in the dehydration stage. Through the experimental verification of a certain ty...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for extracting a rotating speed corresponding to vibration data in a dehydration stage of a washing machine on the basis of an average amplitude difference function (AMDF). The method disclosed by the invention comprises the following steps: acquiring the vibration data by mounting a vibration sensor on a tank body of the washing machine, sufficiently studying physical characteristics of the vibration data in the dehydration stage of the washing machine, specific to different characteristics of an ascent control curve of the vibration data as well as a free attenuation stage, extracting the rotating speed corresponding to the vibration data by adopting an algorithm that the AMDF and differential threshold stage treatment are combined, judging and cutting arotating speed curve corresponding to the vibration data too low in energy in the vibration data in a rotating speed ascent stage and in the vibration data in a rotating speed attenuation stage, integrating the vibration data in three stages and correcting singular points, thus a final rotating speed curve of the vibration data in the dehydration stage is obtained. By virtue of experimental verification on a washing machine of a certain type, results show that rotating speed measurement accuracy of the method disclosed by the invention meets national standard requirements.
Description
technical field [0001] The invention relates to the technical field of automatic detection of washing machines, in particular to a method for extracting rotational speed of vibration data in the dehydration stage of a washing machine based on an average amplitude difference function. Background technique [0002] Extracting the rotational speed of the vibration data of the washing machine helps to understand the running state of the washing machine, so as to perform optimal control or fault diagnosis. The latest national standard for washing machine testing GB / T4288-2018 "Household and Similar Electric Washing Machines" clearly states that a vibration sensor needs to be installed on the washing machine cabinet for vibration characteristic testing. The vibration sensor is installed outside the box, the signal strength is much smaller than that installed in the inner cylinder or outer cylinder, the signal-to-noise ratio is low, and the test difficulty is greatly increased, esp...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02G01M99/00D06F33/40D06F33/47D06F103/24G06F17/15
CPCG06F17/15G01M7/025G01M99/005D06F33/00
Inventor 高翠云常玉陈思伟何晓红张明
Owner ANHUI UNIVERSITY OF ARCHITECTURE