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A Method for Identifying Weak Links of Diesel Engine Electronic Control System Under Strong Electromagnetic Pulse

A diesel engine and electronic control system technology, applied in character and pattern recognition, computer components, data processing applications, etc., can solve the high cost of strong electromagnetic pulse test, poor test method versatility, and many uncertain factors of electromagnetic sensitivity and other issues, to achieve the effects of improving computing efficiency, saving protection costs, and improving the adaptability of electromagnetic environments

Active Publication Date: 2022-03-25
JILIN UNIV
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Problems solved by technology

[0008] The invention provides a method for identifying weak links in the electric control system of diesel engines under strong electromagnetic pulses, so as to solve the problem of high cost of strong electromagnetic pulse tests and limited sample data. Uncertainty factors in parameters such as electromagnetic sensitivity lead to problems such as poor versatility of test methods

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  • A Method for Identifying Weak Links of Diesel Engine Electronic Control System Under Strong Electromagnetic Pulse
  • A Method for Identifying Weak Links of Diesel Engine Electronic Control System Under Strong Electromagnetic Pulse
  • A Method for Identifying Weak Links of Diesel Engine Electronic Control System Under Strong Electromagnetic Pulse

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Embodiment Construction

[0078] Include the following steps:

[0079] Step 1. According to the principle of diesel engine electronic control structure, accurately model the fault network of diesel engine electronic control system

[0080] (1) Classification of diesel engine electronic control components

[0081] According to the functional structure and working principle of the electronic control components of the diesel engine, the electronic control components are divided into n groups (n>1 positive integer), which belong to n subsystems (the electronic control components that cooperate with each other are divided into a group), Among them, the ith (positive integer of 1≤i≤n) subsystem contains m i sensors (called the i-th sensor group, there are n groups of sensors in total) and 1 actuator;

[0082] 1. The fuel supply system determines the current speed of the diesel engine according to the signals of the crankshaft position sensor and the camshaft position sensor. Combined with the controller's ...

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Abstract

The invention relates to a method for identifying weak links of an electric control system of a diesel engine under strong electromagnetic pulses, and belongs to the field of identifying weak links of systems under strong electromagnetic pulses. Firstly, the prior failure probability of components to system level under strong electromagnetic pulse is predicted, and then the posterior probability of failure of each electronic control component under the condition of engine failure is calculated according to the Bayesian probability formula, and sorted to identify its weak links. Select the parts that need to be protected in the electromagnetic protection scheme. The advantage lies in: in the case of limited samples, it can still identify the weak link of the diesel engine electronic control components under strong electromagnetic pulse irradiation, which is universal, and solves the problem of high cost of the test method and the inability to carry out weak links in the case of limited sample data. Uncertainty factors in parameters such as link identification, strong electromagnetic pulse radiation source, and electromagnetic sensitivity of electronic control components lead to the problem of poor versatility of the test method; save protection costs and improve the adaptability of the engine electromagnetic environment.

Description

technical field [0001] The invention belongs to the field of weak link identification of systems under strong electromagnetic pulses, and particularly relates to a diesel engine system under strong electromagnetic pulse irradiation, which can identify the weak links of its electronic control system when the diesel engine system fails. Background technique [0002] As an important means of transportation in modern society, automobiles are increasingly used in electronic devices. In the face of high-power microwave weapon attacks, vehicle electronic equipment will inevitably be interfered or even damaged to varying degrees. As the core of the car, the engine system has a high degree of electronic control and is also more sensitive to the attack of electromagnetic pulses. Nowadays, the development of diesel engines is becoming more and more perfect. With its advantages of high efficiency and wide power range, it is widely used in industrial, agricultural, military and civilian...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06Q10/06
CPCG06Q10/0639G06F18/29
Inventor 孙晓颖刘恬诗赵昱陈建孙铁刚张林王秀成武艺张骞史册
Owner JILIN UNIV
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