Aircraft attitude control ground simulation system effectiveness analysis method

A technology of attitude control and ground simulation, applied in the field of measurement, can solve the problems of difficult dynamic system analysis and difficult to obtain practical and effective results, and achieve the effect of wide application range, simple calculation process and reliable theoretical basis

Inactive Publication Date: 2015-12-30
HARBIN INST OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the analysis of the dynamic system is relatively diff...

Method used

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  • Aircraft attitude control ground simulation system effectiveness analysis method
  • Aircraft attitude control ground simulation system effectiveness analysis method
  • Aircraft attitude control ground simulation system effectiveness analysis method

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Experimental program
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Effect test

Embodiment 1

[0023] combine Figure 1-4 , an efficiency analysis method for aircraft attitude control ground simulation system, for the three degrees of freedom of aircraft ground simulation system, select four dynamic performance indicators of overshoot, settling time, peak time and rise time as similar elements, according to the similarity theory Analyze and compare the similarity between the output of the aircraft's actual attitude control system and the output of the ground simulation system, and quantitatively analyze the credibility of the simulation system; The sum determines the reliability of the entire simulation system; when analyzing the reliability of a single-degree-of-freedom attitude control system, the step response curve of the system is usually selected as the research object.

[0024] The specific steps are:

[0025] Step 1: Determine the weight coefficient of similar elements;

[0026] According to the principle of aircraft attitude control, the importance of the fou...

Embodiment 2

[0072] The aircraft satellite attitude control system includes five parts: attitude control algorithm, actuator, attitude kinematics, attitude dynamics, and attitude determination algorithm. These five sub-modules together constitute a set of similar elements between the simulation system and the actual satellite system. To evaluate the similarity between the ground simulation system and the actual space satellite operation, the credibility of the entire simulation system can also be obtained by first analyzing the credibility of each sub-module, and then weighting and summing the credibility of each sub-module. However, there may be difficulties in some module analysis. For example, in the dynamic module analysis, the platform is affected by various disturbance moments such as eddy current moment, static unbalance moment, friction moment, etc., and the quantitative analysis of these disturbance moments is relatively difficult. , and the attitude control algorithm, actuators, d...

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Abstract

The invention provides an aircraft attitude control ground simulation system effectiveness analysis method. According to the method, by aiming at the three freedoms of an aircraft ground simulation system, four dynamic performance indexes including the overshooting quantity, the stabilizing time, the peak time and the ascending time are selected to be used as similarity units; the similarity degree of the aircraft actual attitude control system output and the ground simulation system output is analyzed and compared according to the similarity theory; the reliability of a simulation system is quantificationally analyzed. The dynamic performance indexes of the three freedoms of the aircraft ground simulation system are used as the similarity units for analysis; the reliability of the simulation system is quantificationally analyzed according to the similarity theory. The analysis method provided by the invention has the advantages that the theoretical basis is reliable; the calculation process is simple; the application range is wide; a new ideal and the reference basis are provided for the reliability study of the simulation system of aircrafts such as unmanned planes and satellites.

Description

technical field [0001] The invention relates to measurement technology, in particular to an efficiency analysis method for an aircraft attitude control ground simulation system. Background technique [0002] The special operating environment of the aircraft makes the ground simulation test particularly important, and to what extent the ground simulation system / test results can explain the actual operation of the aircraft, that is, the issue of "consistency between the sky and the ground", which is an unavoidable problem in the development of the aircraft. evasive question. Therefore, how to analyze the credibility of the ground simulation system, that is, its effectiveness evaluation, is of great significance to the development of aircraft. [0003] Another formulation of efficacy analysis is reliability. The similarity of a system is a measure to describe the degree of similarity between systems. The similarity sets of similar units together constitute the overall similari...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 王常虹李莉夏红伟马广程任顺清
Owner HARBIN INST OF TECH
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