Multiple Quantitative Diagnosis Method for Loose Boot Fault of Axial Piston Pump
A technology of axial piston pumps and loose boots, which is applied in the direction of pump testing, complex mathematical operations, liquid displacement machinery, etc., can solve problems such as misdiagnosis or missed diagnosis, noise interference, etc., and achieve the effect of accurate quantitative diagnosis
Active Publication Date: 2021-04-16
赛腾机电科技(常州)有限公司
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Moreover, these qualitative diagnostic techniques based on spectrum analysis are also susceptible to technical problems such as noise interference, differences in working conditions, etc., resulting in misdiagnosis or missed diagnosis.
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[0039] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0040] Such as Figure 1 to Figure 5 Shown is the optimal embodiment of the present invention, a multiple quantitative diagnosis method for axial piston pump loose shoe failure, the specific steps are as follows:
[0041] S1. Obtain an axial vibration signal a and a sound signal s of an axial piston pump, and perform preprocessing on the axial vibration signal a and the sound signal s;
[0042] Such as figure 1Shown is the work flow chart of the present invention, first adopt vibration acceleration sensor and sound sensor to obtain axial piston pump axial vibration signal a and sound signal s, as figure 2 As shown, the sampling frequency is F s =5kHz, the...
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The invention belongs to the technical field of fault diagnosis, and specifically relates to a multiple quantitative diagnosis method for loose shoe faults of axial piston pumps, including: S1, obtaining axial vibration signals a and sound signals s of axial piston pumps, and analyzing the The axial vibration signal a and the sound signal s are preprocessed; S2, constructing a dual-channel third-order tensor signal T through the pre-processed axial vibration signal a and the sound signal s; S3, the dual-channel three The order tensor signal T is adaptively decomposed and reconstructed to screen out the optimal component signal a o ; S4, according to the optimal component signal a o Determine whether the axial piston pump has a loose shoe fault. The multi-quantitative diagnosis method for the loose shoe fault of the axial piston pump of the present invention accurately calculates the size of the fault on the basis of the loose shoe fault diagnosis, avoids production safety accidents caused by the loose shoe fault, and can save production costs .
Description
technical field [0001] The invention belongs to the technical field of fault diagnosis, and in particular relates to a multiple quantitative diagnosis method for loose shoe faults of axial piston pumps. Background technique [0002] Axial piston pumps have the characteristics of compact structure, high efficiency and high pressure, and are widely used in important industrial equipment such as environmental protection water treatment, loaders, aero engines and ship engines. Due to factors such as working environment, operating conditions and structural form, axial piston pumps will inevitably have different degrees of wear and tear failures during use. If the wear fault develops to a certain extent, it will lead to serious production safety accidents, resulting in economic losses and even casualties. Therefore, the online monitoring and fault diagnosis technology for axial piston pump is of great significance. Loose shoe fault is one of the typical fault modes of axial pist...
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IPC IPC(8): F04B51/00G06F17/16
CPCF04B51/00G06F17/16
Inventor 张飞斌张刘锋褚福磊秦朝烨孟力王飞彪
Owner 赛腾机电科技(常州)有限公司