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Inertia instrument test efficiency evaluation method based on composite information entropy

An inertial instrument and composite information technology, which is applied in the field of inertial instrument test performance evaluation, can solve problems that do not involve inertial instrument performance analysis methods, etc.

Active Publication Date: 2020-10-02
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In "Comprehensive Anti-stealth Combat Effectiveness Evaluation Based on Improved Information Entropy" ("Command Control and Simulation", 2016, Vol. 38, No. 4), Tang Xin et al. proposed a combat effectiveness evaluation method for improved information entropy. The test process It is divided into several test nodes, and the effectiveness of the nodes is affected by several factors, and the degree of uncertainty of the influence is described by the amount of uncertainty self-information; operational effectiveness analysis methods, but not those involving inertial instrument testing

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  • Inertia instrument test efficiency evaluation method based on composite information entropy
  • Inertia instrument test efficiency evaluation method based on composite information entropy
  • Inertia instrument test efficiency evaluation method based on composite information entropy

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Embodiment 1

[0130] Example one: such as figure 1 As shown, the method for evaluating the test performance of inertial meters based on compound information entropy involved in the present embodiment. When evaluating the test performance of the inertial meters, the test process is decomposed into several links, and the test performance of each link is affected by many factors. The uncertainty of these influencing factors can be measured by the degree of membership that meets the task requirements. Information entropy measures the uncertainty of the system by measuring the average amount of information contained in a probability distribution, and its essence reflects the uncertainty of the state in the system. Based on this, the information entropy is mapped to the effectiveness analysis of the test link, which is used to describe the degree of uncertainty of the effectiveness of the test link of each influencing factor. If the uncertainty of the performance of the test link is smaller, the p...

Embodiment 2

[0194] Example 2: Such as figure 1 As shown, the specific calculation process of an inertial meter test efficiency evaluation method based on composite information entropy involved in this embodiment takes a certain type of inertial meter as an example to analyze its test efficiency. In order to simplify the process, only two categories (turntable and angular vibration table) are listed in the middle link, and we directly give the results for the other links.

[0195] Step 1: Determine the degree of membership and weight of each link:

[0196] Step 1.1: Determine the degree of membership of each link

[0197] (1) Indexing head constant speed test capability membership degree: R 1 (x) = 0.8;

[0198] (2) Evaluation of constant speed test capability of turntable

[0199] The speed coverage of the turntable used is set to 90% of the range of the inertial instrument, the speed accuracy is 0.0001, and the speed stability is 0.005, then the membership degree of each index is:

[0200] 1) Cove...

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Abstract

The invention provides an inertia instrument test efficiency evaluation method based on composite information entropy, and belongs to the field of aircraft ground simulation. The invention relates toan inertia instrument test efficiency evaluation method based on composite information entropy. The method comprises the following specific steps: 1, determining membership and weight of each link; 1.1, determining the membership degree of each link; 1.2, determining the weight of each test link by adopting an expert consultation method; 1.3, determining the membership degree and the weight of the(n + 1) th factor; 2, calculating the total self-information amount of the test according to the connection relationship among the links; and 3, determining the self-information amount of the whole test process according to the formula in the step 2, and determining the efficiency of the test system according to the formula. According to the inertia instrument test efficiency evaluation method based on the composite information entropy, the test efficiency of the inertia instrument is quantitatively analyzed, all links of static test, dynamic test and comprehensive test are covered, the feasibility is high, and engineering application is facilitated.

Description

Technical field [0001] The invention relates to an inertial instrument test efficiency evaluation method based on compound information entropy, and belongs to the field of aircraft ground simulation. Background technique [0002] Inertial instruments can realize autonomous navigation and positioning without relying on GPS, Beidou, etc., and have a wide range of applications in aviation, aerospace, navigation, naval and other fields, and are related to the national economy and people's livelihood. Inertial instruments include multiple high-precision components such as light, machine, electricity, liquid, gas, and magnet. When working in the actual system, they will not only bear the effects of overload, vibration, shock, etc., but also be subjected to temperature field, pressure field, electric field, and magnetic field. The error formation mechanism is very complicated due to the influence of environmental disturbance factors such as the gravity field. The performance index of i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F119/06G06F17/10G06Q10/06
CPCG06F17/10G06Q10/0639G06F30/20G06F2119/06
Inventor 夏红伟安昊李莉王常虹马广程
Owner HARBIN INST OF TECH