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Rolling bearing friction moment parameter uncertainty estimation method

A technology with uncertain parameters and friction torque, which can be used in electrical digital data processing, special data processing applications, instruments, etc., and can solve problems such as poor accuracy

Active Publication Date: 2016-11-16
SHIJIAZHUANG TECH MACRO PUMP IND CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a rolling bearing friction moment parameter uncertainty evaluation method to solve the problem of poor accuracy of existing evaluation methods

Method used

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  • Rolling bearing friction moment parameter uncertainty estimation method
  • Rolling bearing friction moment parameter uncertainty estimation method
  • Rolling bearing friction moment parameter uncertainty estimation method

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Experimental program
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Effect test

Embodiment 1

[0085] The flow chart of the inventive method is as image 3 As shown, the specific implementation steps are:

[0086] (1) Select 8 sets of aerospace bearings HKTA, measure their friction torque, and obtain the friction torque data of the bearings

[0087] ①Experimental conditions: room temperature 20℃~25℃, relative humidity above 55%, clean environment, no vibration of foundation.

[0088] ②Friction torque measurement method: such as figure 2 , the outer ring of the tested bearing 3 is installed in the replacement sleeve 4, and is driven to rotate together with the replacement sleeve 4 by the transmission system, and the inner ring of the tested bearing 3 is fixed on the main shaft 6 by the replacement spindle 2 and the pin 1. The spring 10 applies an axial load through the hanging wire 8 . The main shaft 6 is installed in the air bearing 5 (the friction torque between the main shaft 6 and the air bearing 5 is extremely small). When the outer ring rotates, due to the int...

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Abstract

The invention discloses a rolling bearing friction moment parameter uncertainty estimation method. The method comprises the following steps of: firstly measuring a rolling bearing friction moment to obtain a rolling bearing friction moment time sequence, expressing the rolling bearing friction moment time sequence by a data sequence, assuming the data sequence as a normal distribution with unknown mean values and known variances, and calculating the mean values and variances of data in the data sequence; carrying out robust processing on the data sequence to obtain prior experience functions, and calculating the mean values and variances of the prior experience functions; and finally calculating a rolling bearing friction moment Bayes estimation interval under a certain confidence degree. According to the method disclosed by the invention, two optimum estimations are organically fused and complement each other's advantages; a data robust processing method which is not only capable of reflecting data position features, but also capable of reflecting total data attitude, and test data processed by the method is used as prior information of Bayes estimation; and a Bayes method is used for estimating the performance of mechanical products.

Description

technical field [0001] The invention relates to an evaluation method of a bearing friction moment parameter, in particular to a method for evaluating the uncertainty of a rolling bearing friction moment parameter. Background technique [0002] Rolling bearings play a key role in the smooth operation of equipment and equipment. Therefore, the analysis and evaluation of the comprehensive performance of bearings is of great significance. Friction torque is the embodiment of the comprehensive factors of bearing manufacturing, assembly and environmental factors. It is mainly used to reflect the friction and lubrication state of bearings during work. It is an important indicator used to evaluate the flexibility of bearing operation in the industry. Among them, the bearing friction torque directly affects the accuracy of power signal transmission and the stability and reliability of work, and the reasonable and correct evaluation of bearing friction torque has been concerned by rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 徐永智李垂涛丁慧玲常艳辉李富邦
Owner SHIJIAZHUANG TECH MACRO PUMP IND CO LTD
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