CN102799736A - Three-dimensional motion visual simulation method for aircraft - Google Patents
Three-dimensional motion visual simulation method for aircraft Download PDFInfo
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- CN102799736A CN102799736A CN2012102572383A CN201210257238A CN102799736A CN 102799736 A CN102799736 A CN 102799736A CN 2012102572383 A CN2012102572383 A CN 2012102572383A CN 201210257238 A CN201210257238 A CN 201210257238A CN 102799736 A CN102799736 A CN 102799736A
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Abstract
The invention discloses a three-dimensional motion visual simulation method for an aircraft. The three-dimensional motion visual simulation method comprises the following steps: (1), respectively constructing three-dimensional models of the aircraft and an aircraft launching platform; (2), tracking and displaying the simulation position according to a preset flight track data source of the aircraft; and (3), judging whether the motion time of the aircraft reaches a switch time t0 of a switch model data source or not, if not, continuously carrying out the step (2); or otherwise, switching the motion model data source of the aircraft into a simulation tracking model data source for simulation tracking and displaying and switching the time t0 to be equal to (Em+Eb+Ed)r/vt, wherein Em represents a modeling error of the aircraft three-dimensional model, Eb represents the flight track error, Ed represents the three-dimensional simulation display engine error, r represents a validity factor and vt represents the launching speed of the aircraft. According to the three-dimensional motion visual simulation method provided by the invention, the problem that the display quality is influenced by the relative error caused by the three-dimensional modeling error and a trajectory error when the launching platform and the aircraft are subjected to simulation display in one window is solved and the flight state display of the aircraft in the simulation process is realized more accurately.
Description
Technical field
The invention belongs to computer simulation method and technology field, especially relate to the three-dimensional motion visual simulating method in aircraft emission and the flight course.
Background technology
The application of three-dimensional computer emulation relates to various aspects such as recreation, news, film, aircraft simulation, and simplation visualizing has become the important supplementary means that the scientific research personnel develops analogue system, carries out emulation experiment.
Especially in dummy vehicle development work; Exist the variation of aircraft model and structure, flat pad level of integrated system height, each model aircraft to carry objective situations such as concerning complicacy; Through the simplation visualizing means, the technician can check intuitively aircraft emission, fly, hit and the platform motion state.Therefore, accurate simplation visualizing technology can be engaged in work such as system integration and test, modelling verification, measures of effectiveness for the scientific research personnel provides and provides powerful support for.
Because the profile geometric parameter of aircraft can accurately reflect information such as its aerodynamic parameter, hydrodynamic parameters, radiation characteristic; At present in the simplation visualizing field; The three-dimensional model developer generally can't accurately obtain the geometric parameter of aircraft, can only carry out modeling according to existing picture information.Because reasons such as the authenticity of all kinds of figure chip architectures (can artificially add error before the part picture is open), shooting angle, shooting distance unavoidably comprise various errors in the dummy vehicle that makes up in view of the above, influence the modeling accuracy.
In addition because the space is narrow and small on the flat pad, the integrated level of aircraft on flat pad is high; The platform that particularly possesses general Vertical Launch ability; Its emission process has at a high speed, high precision, highdensity characteristics, the high modeling accuracy of precision prescribed in simulation process for this reason.The relative position display distortion influences display effect between platform, the aircraft thereby the existence of any three-dimensional model modeling error all can cause.How to develop the kinematic system visual simulating development approach that a cover contains the three-dimensional model modeling error; Can make up the complex aircraft 3-D geometric model simply and easily; And use this class model to carry out the emulation three-dimensional demonstration, become the difficult point technology in the analogue simulation.
Summary of the invention
In order to solve the error effect accuracy problem in the above-mentioned visual simulating simulation; The present invention proposes and a kind ofly utilize the different pieces of information source to carry out the method for visual Simulation aircraft three-dimensional motion constantly to different aircraft flight; Its technical scheme does; Aircraft three-dimensional motion visual simulating method, the emulation mode step is following: (1) makes up the three-dimensional model of aircraft and aircraft flat pad respectively; (2) carry out emulation Position Tracking and demonstration according to the preset flight track model data source of aircraft; (3) judge whether the aircraft movements time reaches the switching time of switching model data source
; If do not reach
constantly, continue (2) step; If reach
constantly; Then the model data source of aircraft movements switches to emulation trace model data source and carries out that emulation is followed the tracks of and show switching time
;
is aircraft three-dimensional model modeling error;
is the flight track error;
is three-dimensional artificial display engine error;
is the validity factor, and
is the emission rate of aircraft.
The product that above-mentioned aircraft three-dimensional model modeling error is flat pad size and error factor
; Here
is the flat pad size;
is error factor,
.
During above-mentioned simulation process (1) (2) (3), flat pad and aircraft are in same display interface tracing display.
The aircraft and the aircraft flat pad three-dimensional model that make up in the above-mentioned steps (1) are the models that comprises three-dimensional velocity and position.
Technical scheme of the present invention has solved the aircraft emission initial stage; Distance between aircraft and the flat pad increases progressively in time fast; Because analogue simulation needs flat pad and aircraft in a window, to show simultaneously; The relative error that is caused by three-dimensional model modeling error and trajectory error will expose fully, thereby influence shows the image quality quality.Technology of the present invention has solved for flat pad and aircraft are shown at a window simultaneously simultaneously; To zooming out observed range fast so that enough visual angles to be provided; No matter cause is that the flat pad or the imaging size of aircraft dwindle fast, the defective that the display quality that causes descends.Carry out different model driving data source constantly through difference, realized that more accurately the aircraft flight state in the analogue simulation process shows.
Description of drawings
Fig. 1 is an emulation mode process flow diagram of the present invention.
Embodiment
Carry out detailed explanation below in conjunction with emulation mode process flow diagram of the present invention, as shown in Figure 1, when emulation begins, make up the three-dimensional model of aircraft and aircraft flat pad at first respectively, make up three-dimensional model usually and adopt DOF (x, y, z, v
x, v
x, v
z) 6 degree of freedom modes make up; Carry out emulation Position Tracking and demonstration according to the preset flight track model data source of aircraft then; In the process of following the tracks of, judge whether the aircraft movements time reaches the switching time of switching model data source
, if do not reach
Constantly, the step in the continuation; If reach
Constantly, then the model data source of aircraft movements switches to emulation trace model data source and carries out that emulation is followed the tracks of and show.Be by emission rate
switching time; The relative distance
of
moment aircraft and flat pad; Validity
; And error threshold
decision; Physical relationship is
;
;
: three-dimensional model modeling error; Function for moulded dimension
; Be expressed as
; Length like flat pad is 150m; Error coefficient
is 0.2, and then
is 30m;
is the flight track error; Rule of thumb provide concrete numerical value by preset modeling personnel;
is three-dimensional artificial display engine error; Thereby can confirm the minimum time of switching time according to following formula
; Because
moment aircraft and flat pad relative position
are the integral functions of
; Suppose that weaponry from being transmitted into the switching instant rectilinear motion that remains a constant speed, can get:
.
Validity
be used to describe the distance measurements
between aircraft and the platform and the error threshold
estimated between proportionate relationship; Because the hypothesis emission initial stage in the present technique scheme, the relative distance of aircraft and flat pad increases progressively in time.Therefore
is big more, and then the influence of the displacement that causes of switch data source is more little.The value of
needs the emulation personnel comprehensive consideration of flight vehicle flight overall process time;
should be greater than 10 generally speaking, but
that calculate thus should fly 50% of the overall process time less than weapon.
The above; Preferred embodiment for content of the present invention; Be not that content of the present invention is done any restriction, all content technologies essence changes any simple modification, change and the equivalent structure that above embodiment did according to the present invention, all belongs in the protection domain of content technologies scheme of the present invention.
Claims (4)
1. aircraft three-dimensional motion visual simulating method is characterized in that, the emulation mode step is following: (1) makes up the three-dimensional model of aircraft and aircraft flat pad respectively; (2) carry out emulation Position Tracking and demonstration according to the preset flight track model data source of aircraft; (3) judge whether the aircraft movements time reaches the switching time of switching model data source
; If do not reach
constantly, continue (2) step; If reach
constantly; Then the model data source of aircraft movements switches to emulation trace model data source and carries out that emulation is followed the tracks of and show switching time
;
is aircraft three-dimensional model modeling error;
is the flight track error;
is three-dimensional artificial display engine error;
is the validity factor, and
is the emission rate of aircraft.
2. aircraft three-dimensional motion visual simulating method according to claim 1; It is characterized in that; Aircraft three-dimensional model modeling error is the product
of flat pad size and error factor; Here
is the flat pad size;
is error factor,
.
3. aircraft three-dimensional motion visual simulating method according to claim 1 is characterized in that, is carrying out simulation process (1) (2) (3) during the step, and flat pad and aircraft are in same display interface tracing display.
4. aircraft three-dimensional motion visual simulating method according to claim 1 is characterized in that, the aircraft and the aircraft flat pad three-dimensional model that make up in the step (1) are the models that comprises 3 dimension speed and position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210257238.3A CN102799736B (en) | 2012-07-24 | 2012-07-24 | Three-dimensional motion visual simulation method for aircraft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210257238.3A CN102799736B (en) | 2012-07-24 | 2012-07-24 | Three-dimensional motion visual simulation method for aircraft |
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| Publication Number | Publication Date |
|---|---|
| CN102799736A true CN102799736A (en) | 2012-11-28 |
| CN102799736B CN102799736B (en) | 2014-11-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103577656A (en) * | 2013-11-25 | 2014-02-12 | 哈尔滨工业大学 | Three-dimensional dynamic simulation method for water outlet process of submarine-launched missiles |
| CN110383194A (en) * | 2018-05-28 | 2019-10-25 | 深圳市大疆创新科技有限公司 | The Air Diary processing method and processing device of unmanned plane |
Citations (3)
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|---|---|---|---|---|
| CN101398866A (en) * | 2008-10-29 | 2009-04-01 | 哈尔滨工程大学 | Aircraft vision emulation system |
| US20100305781A1 (en) * | 2007-09-21 | 2010-12-02 | The Boeing Company | Predicting aircraft trajectory |
| CN102567586A (en) * | 2012-01-04 | 2012-07-11 | 中国电子科技集团公司第二十八研究所 | Simulation system and simulation method for three-dimensional comprehensive situations of space mission |
-
2012
- 2012-07-24 CN CN201210257238.3A patent/CN102799736B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100305781A1 (en) * | 2007-09-21 | 2010-12-02 | The Boeing Company | Predicting aircraft trajectory |
| CN101398866A (en) * | 2008-10-29 | 2009-04-01 | 哈尔滨工程大学 | Aircraft vision emulation system |
| CN102567586A (en) * | 2012-01-04 | 2012-07-11 | 中国电子科技集团公司第二十八研究所 | Simulation system and simulation method for three-dimensional comprehensive situations of space mission |
Non-Patent Citations (2)
| Title |
|---|
| 张华磊等: "《基于HLA的飞行模拟器视景系统的开发》", 《微计算机信息》, vol. 24, no. 51, 31 December 2008 (2008-12-31), pages 234 - 236 * |
| 戴雪峰，金连文: "《基于OpenGL实现火箭弹道及卫星轨道三维可视化》", 《测控技术》, vol. 25, no. 1, 31 December 2006 (2006-12-31), pages 17 - 19 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103577656A (en) * | 2013-11-25 | 2014-02-12 | 哈尔滨工业大学 | Three-dimensional dynamic simulation method for water outlet process of submarine-launched missiles |
| CN103577656B (en) * | 2013-11-25 | 2016-06-15 | 哈尔滨工业大学 | Submarine launched missile exiting water process three dimension dynamic simulation method |
| CN110383194A (en) * | 2018-05-28 | 2019-10-25 | 深圳市大疆创新科技有限公司 | The Air Diary processing method and processing device of unmanned plane |
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| CN102799736B (en) | 2014-11-26 |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Bo Inventor after: Yu Xihui Inventor after: Liu Qingyu Inventor after: Yan Jintun Inventor after: Yu Miao Inventor after: Su Bing Inventor after: Peng Chunguang Inventor after: Gui Qiuyang Inventor after: Wang Xiaohan Inventor after: Ma Shuo Inventor before: Zhang Bo Inventor before: Liu Qingyu Inventor before: Yan Jintun Inventor before: Wang Xiaohan Inventor before: Yu Miao Inventor before: Yu Xihui |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG BO LIU QINGYU YAN JINTUN WANG XIAOHAN YU MIAO YU XIHUI TO: ZHANG BO LIU QINGYU YAN JINTUN YU MIAO SU BING PENG CHUNGUANG GUI QIUYANG WANG XIAOHAN MA SHUO YU XIHUI |
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