Diesel engine lubricating oil feeding security parameter prediction method based on grey theory

A technology of gray theory and prediction method, applied in the direction of internal combustion engine testing, complex mathematical operations, etc., can solve problems such as single, diesel engine damage, etc.

Inactive Publication Date: 2020-10-30
HARBIN ENG UNIV
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Problems solved by technology

The main control module judges the detection signal through the alarm threshold, and if the detection signal exceeds the alarm threshold, the main control module sends a stop signal to the diesel engine, and sends an alarm to the diesel engine through the remote control box. If the detection signal does not

Method used

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  • Diesel engine lubricating oil feeding security parameter prediction method based on grey theory
  • Diesel engine lubricating oil feeding security parameter prediction method based on grey theory
  • Diesel engine lubricating oil feeding security parameter prediction method based on grey theory

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specific Embodiment 1

[0073] according to figure 1 As shown, the present invention provides a method for predicting the safety parameters of lubricating oil in diesel engines based on gray theory, specifically:

[0074] A method for predicting security parameters of lubricating oil in diesel engines based on gray theory, comprising the following steps:

[0075] Step 1: Collect the pressure data of the diesel engine through the pressure sensor, the pressure data is the operation data of the lubricating oil inlet pressure of the diesel engine, obtain it from the pressure sensor of the diesel engine lubricating oil inlet pipeline through the data acquisition card, and store the data in Excel middle;

[0076] Step 2: Carry out data preprocessing on the collected lubricating oil inlet pressure operation data of the diesel engine to filter out the influence of environmental noise;

[0077] The step 2 is specifically:

[0078] Step 2.1: Initialize the diesel engine and determine the input signal w k ,...

specific Embodiment 2

[0135] The invention comprises the following steps: data collection of lubricating oil inlet pressure of the diesel engine, data preprocessing of the lubricating oil inlet pressure of the diesel engine, calculation of gray forecast data of the lubricating oil inlet pressure of the diesel engine, and judgment of the future working state of the diesel engine. details as follows:

[0136] Step 1: Data acquisition of lubricating oil inlet pressure of diesel engine: the operating data of lubricating oil inlet pressure of the diesel engine is obtained by the data acquisition card from the pressure sensor of the diesel engine lubricating oil inlet pipeline, and the operating data is stored in Excel In order to read and use in subsequent data preprocessing steps and gray prediction model building steps.

[0137] Step 2: Data preprocessing of diesel engine lubricating oil inlet pressure: Preprocessing the above collected diesel engine operation data can effectively filter out the noise...

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Abstract

The invention relates to a diesel engine lubricating oil feeding security parameter prediction method based on a grey theory, which belongs to the technical field of diesel engine safety prediction. The method comprises the steps of firstly collecting the operation data of the diesel engine lubricating oil feeding pressure and temperature, and carrying out the Kalman filtering of the operation data, then, according to the modeling steps of the grey prediction model, achieving the prediction function of diesel engine operation data and acquiring a prediction result, checking the grey predictionmodel by using a relative error checking method, optimizing the grey model by using a residual error method if the grey prediction model does not meet the fourth-level checking index until the grey model meets the fourth-level and higher-level indexes, and outputting accurate prediction data, and on the basis that the relative error of the prediction data is verified to be qualified, performing logic discrimination on the prediction result and a diesel engine alarm threshold, and outputting a prediction state result to an upper computer. According to the method, the change trend of the dieselengine lubricating oil feeding parameters can be effectively predicted, and the future working state of the diesel engine lubricating oil system is reasonably predicted.

Description

technical field [0001] The invention relates to the technical field of diesel engine safety prediction, and relates to a method for predicting safety parameters of lubricating oil entering the diesel engine based on gray theory. Background technique [0002] With the rapid development of industrialization in today's society, diesel engines, as the most commonly used power machinery equipment, are widely used in fields such as petroleum mines, stationary power generation, railway traction, construction machinery and special ships, and diesel engines are increasingly large-scale and high-speed. , the direction of precision development, the work performance is continuously improved, and the degree of automation is getting higher and higher. On the one hand, the use of advanced diesel engines will greatly increase labor productivity, improve product quality, reduce production costs and energy consumption; but on the other hand, the problem of safe operation of diesel engines is ...

Claims

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Application Information

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IPC IPC(8): G01M15/09G01M15/05G06F17/13G06F17/16G06F17/18
CPCG01M15/05G01M15/09G06F17/13G06F17/16G06F17/18
Inventor 王忠巍李耀徐荣倪小明张玉兴周莉娜
Owner HARBIN ENG UNIV
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