CN102799736B - Three-dimensional motion visual simulation method for aircraft - Google Patents
Three-dimensional motion visual simulation method for aircraft Download PDFInfo
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- CN102799736B CN102799736B CN201210257238.3A CN201210257238A CN102799736B CN 102799736 B CN102799736 B CN 102799736B CN 201210257238 A CN201210257238 A CN 201210257238A CN 102799736 B CN102799736 B CN 102799736B
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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 for the three-dimensional motion visual simulating method in vehicle launch and flight course.
Background technology
The application of three-dimensional computer emulation relates to the various aspects such as game, news, film, aircraft simulation, and simplation visualizing has become the important supplementary means that scientific research personnel develops analogue system, carries out emulation experiment.
Especially in dummy vehicle development work, exist aircraft model and structure diversification, high, the each model aircraft of flat pad level of integrated system to carry and be related to the objective situations such as complexity, by simplation visualizing means, technician can check intuitively aircraft transmitting, fly, hit and platform motion state.Therefore, accurate simplation visualizing technology can be engaged in for scientific research personnel the work such as system integration and test, modelling verification, measures of effectiveness provides and provides powerful support for.
Because the profile geometric parameter of aircraft can accurately reflect the information such as its aerodynamic parameter, hydrodynamic parameters, radiation characteristic, at present in simplation visualizing field, three-dimensional model developer generally cannot Obtaining Accurate aircraft geometric parameter, can only carry out modeling according to existing picture information.Due to reasons such as the authenticity of all kinds of picture structures (can artificially add error before part picture is open), shooting angle, shooting distances, in the dummy vehicle building accordingly, unavoidably comprise various errors, affect modeling accuracy.
In addition because narrow space, the aircraft integrated level on flat pad on flat pad is high, particularly possesses the platform of general Vertical Launch ability, its emission process has at a high speed, high precision, highdensity feature, for this reason high modeling accuracy of precision prescribed in simulation process.Thereby the existence of any three-dimensional model modeling error all can cause relative position display distortion between platform, aircraft to affect display effect.How to develop the kinematic system visual simulating development approach of a set of containing three-dimensional model modeling error, can build simply and easily complex aircraft 3-D geometric model, and use this class model to carry out emulation three-dimensional demonstration, become the Technology Difficulties in analogue simulation.
Summary of the invention
In order to solve the error effect accuracy problem in above-mentioned visual simulating simulation, the present invention proposes and a kind ofly utilize different pieces of information source to carry out the method for visual Simulation aircraft three-dimensional motion for the different aircraft flight moment, its technical scheme is, aircraft three-dimensional motion visual simulating method, emulation mode step is as follows: (1) builds respectively the three-dimensional model of aircraft and vehicle launch platform; (2) carry out the tracking of emulation position and demonstration according to the default flight track model data of aircraft source; (3) judge whether the aircraft movements time reaches the switching time of switching model data source
if do not reach
in the moment, continue (2) step; If reach
in the moment, the model data source of aircraft movements switches to emulation trace model data source and carries out emulation tracking and demonstration, switching time
;
aircraft three-dimensional model modeling error,
flight track error,
three-dimensional artificial display engine error,
the validity factor,
it is the emission rate of aircraft.
Above-mentioned aircraft three-dimensional model modeling error is the product of flat pad size and error factor
, here
flat pad size,
error factor,
.
When above-mentioned simulation process (1) (2) (3), flat pad and aircraft are followed the tracks of and are shown at same display interface.
The aircraft and the vehicle launch platform three-dimensional model that in above-mentioned steps (1), build are the models that comprises three-dimensional velocity and position.
Technical solution of the present invention has solved the vehicle launch initial stage, distance between aircraft and flat pad increases progressively in time fast, because needing flat pad and aircraft, analogue simulation shows in a window simultaneously, the relative error being caused by three-dimensional model modeling error and ballistic error will expose completely, thereby impact shows image quality quality.The technology of the present invention has solved for flat pad and aircraft are shown at a window simultaneously simultaneously, for zooming out fast observed range so that enough visual angles to be provided, no matter cause is that flat pad or the imaging size of aircraft dwindle fast, the defect that the display quality causing declines.By not carrying out in the same time different model-driven data sources, the aircraft flight state of more accurately having realized in analogue simulation process shows.
Brief description of the drawings
Fig. 1 is emulation mode process flow diagram of the present invention.
Embodiment
Be explained in detail explanation below in conjunction with emulation mode process flow diagram of the present invention, as shown in Figure 1, when emulation starts, build first respectively the three-dimensional model of aircraft and vehicle launch platform, conventionally build three-dimensional model and adopt DOF(x, y, z, v
x, v
x, v
z) 6 degree of freedom modes build; Then carry out the tracking of emulation position and demonstration according to the default flight track model data of aircraft source; 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
moment, step in continuation; If reach
in the moment, the model data source of aircraft movements switches to emulation trace model data source and carries out emulation tracking and demonstration.Be by emission rate switching time
,
the relative distance of moment aircraft and flat pad
, validity
, and error threshold
determine, physical relationship is
,
,
: three-dimensional model modeling error is moulded dimension
function, be expressed as
, if the length of flat pad is 150m, error coefficient
be 0.2,
for 30m;
for flight track error, rule of thumb provide concrete numerical value by default modeling personnel,
three-dimensional artificial display engine error, thereby according to following formula
can determine the minimum time of switching time, because
moment aircraft and flat pad relative position
be
integral function, suppose that weaponry, from being transmitted into the switching instant rectilinear motion that remains a constant speed, can obtain:
.
Validity
for describing the distance measurements between aircraft and platform
with the error threshold of estimating
between proportionate relationship because suppose the transmitting initial stage in the technical program, the relative distance of aircraft and flat pad increases progressively in time.Therefore
larger, the impact of the displacement that cause in switch data source is less.
value need the emulation personnel comprehensive consideration of flight vehicle flight overall process time, generally
should be greater than 10, but calculate thus
should be less than 50% of the weapon flight overall process time.
The above; for the preferred embodiment of content of the present invention; not content of the present invention is imposed any restrictions, all any simple modification that content technologies essence is done above embodiment according to the present invention, change and equivalent structure change, and all belong in the protection domain of content technologies scheme of the present invention.
Claims (3)
1. aircraft three-dimensional motion visual simulating method, is characterized in that, emulation mode step is as follows: (1) builds respectively the three-dimensional model of aircraft and vehicle launch platform; (2) carry out the tracking of emulation position and demonstration according to the default flight track model data of aircraft source; (3) judge whether the aircraft movements time reaches the switching time of switching model data source
if do not reach
in the moment, continue (2) step; If reach
in the moment, the model data source of aircraft movements switches to emulation trace model data source and carries out emulation tracking and demonstration, switching time
;
be aircraft three-dimensional model modeling error, it is defined as the product of flat pad size and error factor
, here
flat pad size,
error factor,
;
flight track error,
three-dimensional artificial display engine error,
the validity factor,
it is the emission rate of aircraft.
2. aircraft three-dimensional motion visual simulating method according to claim 1, is characterized in that, in the time carrying out simulation process (1) (2) (3) step, flat pad and aircraft are followed the tracks of and shown at same display interface.
3. aircraft three-dimensional motion visual simulating method according to claim 1, is characterized in that, the aircraft and the vehicle launch platform three-dimensional model that in step (1), build are the models that comprises 3 dimension speed and position.
Priority Applications (1)
| 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 CN102799736A (en) | 2012-11-28 |
| CN102799736B true CN102799736B (en) | 2014-11-26 |
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|---|---|---|---|
| CN201210257238.3A Expired - Fee Related CN102799736B (en) | 2012-07-24 | 2012-07-24 | Three-dimensional motion visual simulation method for aircraft |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2385403T3 (en) * | 2007-09-21 | 2012-07-24 | The Boeing Company | Prediction of the trajectory of an aircraft |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (3)
| Title |
|---|
| 《基于HLA的飞行模拟器视景系统的开发》;张华磊等;《微计算机信息》;20081231;第24卷(第5-1期);第234-236页 * |
| 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》.2008,第24卷(第5-1期),第234-236页. * |
| 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》.2006,第25卷(第1期),第17-19页. * |
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| CN102799736A (en) | 2012-11-28 |
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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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