Six-degree-of-freedom simulation modeling method

Abstract

The invention relates to a six-degree-of-freedom simulation modeling method. The method includes: an origin O is defined to be fixedly connected to the center of the earth, an XOY plane is located inthe equator, the X-axis points to a certain star, and the Z-axis passes through the North pole; the center of the earth is fixedly connected with a coordinate system and rotates with the rotation of the earth; the origin O is fixedly connected to the center of the earth, the XOY plane is located in an equator plane, an angle LG (0) is arranged between the initial position of the X-axis and Xeci, the Z-axis passes through the North pole, and the Y-axis is vertical to an XOZ plane according to a right hand criterion; the origin O is fixedly connected to the center of gravity of an airplane, theX-axis is arranged forwardly along the head, the Z-axis is arranged downwardly vertical to the X-axis in a symmetrical plane of the airplane, and the Y-axis is arranged rightwardly vertical to the XOZplane; and normal projection is performed on the surface of the earth by regarding the origin as the center of gravity of the airplane, the X-axis points to the North pole, the Y-axis points to the east, and the Z-axis is arranged downwardly vertical to the land surface of a local place. By employing the object-oriented technology and the software module design idea, a six-degree-of-freedom motion non-linear and high-precision simulation model database of a flight envelope of the general unmanned aerial vehicle is established, and the method is used for simulating flight control, flight trackplanning and task display in a flight process of the unmanned aerial vehicle.

Description

technical field [0001] The invention relates to the technical field of simulation modeling, in particular to a six-degree-of-freedom simulation modeling method. Background technique [0002] Modeling is to build a model, which is an abstraction of things in order to understand things, and an unambiguous written description of things. The process of building a system model is also called modeling. Modeling is an important means and premise of studying the system. Any process that uses a model to describe the causal relationship or mutual relationship of a system belongs to modeling. Because the relationship described is different, the means and methods to realize this process are also various. It can be modeled according to the mechanism of things through the analysis of the law of motion of the system itself; it can also be modeled according to the existing knowledge and experience about the system through the processing of system experiments or statistical data. It is a...

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of the existing technology is: as far as the UAV simulation system is concerned, the current modeling method cannot provide a set of system models with effective simulation effects and realistic effects.

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