JPH09179486A - Sea wave simulated view field generating method and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To synchronize the motion of an airplane and the sea wave simulated view field and reduce the data transfer quantity between an arithmetic process section and a simulated view field device section without giving a sense of incompatibility to a trainee. SOLUTION: The first three-dimensional sea wave simulation calculation section 103 in an arithmetic process section 101 calculates the sea wave information required for simulating the motion of an airplane at the present time (t). A motion simulation calculation section 104 calculates the motion of the airplane based on the maneuvering state and the sea wave information of the first three-dimensional sea wave simulation calculation section 103. The second three-dimensional sea wave simulation calculation section 109 of a simulated view field device section 107 calculates the sea wave information required for displaying the sea wave image at the time (t)+Δt (t: response time of simulated view field display by maneuvering input). The sea wave simulated view field image at the time (t)+Δt as seen from the airplane is generated based on the motion information of the airplane sent from the arithmetic process section 101 to an image process section 110 and the three-dimensional sea wave information at the time (t)+Δt calculated by the second three-dimensional sea wave simulation calculation section 109.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention simultaneously performs optimum sea surface information processing in the image display of sea surface waves and the simulated calculation of aircraft motion in the iterative processing process of a real-time simulator. The present invention relates to a method for generating a simulated sea surface field of view and a device therefor, which can simulate landing close to reality by achieving synchronization.

[0002]

2. Description of the Related Art Conventionally, for example, a sea surface wave simulated field of view generator used for a flight training device for the purpose of aircraft landing training
It is configured as shown in FIG. In FIG. 3, 301 is an arithmetic processing unit, 302 is a hydraulic / aerodynamic calculation unit, 303 is an instructor desk,
Reference numeral 304 is a cockpit, 305 is a simulated visual field device section, 306 is a simulated visual field generation device, and 307 is a simulated visual field display device. FIG. 4 is a timing diagram of each part, and FIG. 5 shows a positional relationship between a body and a sea surface (in this specification, “sea surface” means a sea surface, a lake surface, a water surface on which a simulated aircraft lands such as a marsh surface) and waves. It is a figure explaining.

From the cockpit 304, the manipulated variable manipulated by the trainee is output and input to the hydraulic / aerodynamic calculation section 302. The hydraulic / aerodynamic calculation unit 302 uses the simulated visual field generator 3
Aerodynamic force acting on the airframe (simulation of aerodynamic force) depending on the wave state before the response time of the simulated visual field display by the pilot input by the pilot trainer from the current time from 06 and the pilot state from the pilot seat 304, that is, the pilot volume, etc. Also, by calculating the hydraulic resistance (simulation of hydraulic power) acting on the aircraft at the time of landing and solving the equation of motion, the velocity, position (latitude, longitude, altitude) and attitude of the aircraft in a three-dimensional space are calculated. From the instructor's desk 303, wind direction, wind speed, sea surface condition (sea state), etc. are set. The simulated field-of-view generator 306 inputs the setting information and the information such as the position / orientation of the airframe by simulating the hydraulic power / aerodynamics of the hydraulic / aerodynamic calculation unit 302, and from the window of the airframe according to the position / orientation of the airframe. Generate a simulated field of view that includes the visible sea surface. The simulated visual field display device 307 is the simulated visual field generation device 30.
The simulated field of view generated in 6 is displayed so that it can be viewed by the trainee in the cockpit 304 as the field of view information. The trainee operates while looking at this simulated field of view.

[0004]

The hydraulic / aerodynamic calculation unit 30
The sea surface information input from the simulated field-of-view generator 306 is information at a time before the response time of the simulated field-of-view display by the pilot input by the pilot trainer than the current time, and the motion of the aircraft should be simulated in real time. Was difficult. Further, the image of the sea surface displayed on the simulated view display device 307 at the current time is an image before the response time of the simulated view display by the trainee's operation input before the current time, and the motion of the aircraft and the simulated view at the time of landing. There was a problem that the trainees could not feel the sense of incongruity because they could not be synchronized with.

From the simulated visual field generator 306 of the simulated visual field device section 305 to the hydraulic / aerodynamic calculation section 302 of the arithmetic processing section 301.
There is a limit to the amount of data that can be transferred to the
Since it is not possible to transfer all the data necessary to perform the hydraulic / aerodynamic simulation, it was not possible to sufficiently simulate the motion of the aircraft when landing.

It is an object of the present invention to provide a sea surface wave simulated visual field generating method and apparatus for imitating a trainee with a sense of discomfort by simulating the motion of an aircraft when landing in real time.

It is an object of the present invention to provide a method for generating a simulated sea surface wave field and a device therefor in which the motion of an aircraft and the simulated field of view of the sea surface wave are synchronized and the trainee does not feel discomfort.

Another object of the present invention is to provide a sea surface wave simulated field-of-view generation method and apparatus in which the amount of data transferred between the arithmetic processing section and the simulated field-of-view apparatus section is reduced.

[0009]

In order to solve the above problems, a video processing method according to the present invention is an aircraft at the current time according to a predetermined sea surface wave mathematical model in an arithmetic processing unit in an iterative processing process of a real-time simulator. The three-dimensional sea surface information necessary for simulating the motion of the aircraft, the aircraft motion is calculated from the control state and the three-dimensional sea surface information, and the simulated visual field device section simulates the visual field by the pilot input rather than the current time. The three-dimensional sea surface wave information necessary for displaying the sea surface wave image at the time after the display response time is calculated by the same formula as the sea surface wave mathematical model, and the motion information of the aircraft and the simulated view device which are data-transferred from the arithmetic processing unit. Based on the three-dimensional sea surface wave information at the time after the time calculated by the department, the navigation at the time after the response time of the simulated visual field display by maneuvering input than the current time It is intended to generate a simulated sight picture of sea waves as viewed from the machine.

Further, the image processing apparatus according to the present invention is such that the first three-dimensional sea surface wave simulation calculator for calculating the three-dimensional sea surface wave information necessary for simulating the motion of the aircraft at the current time by the predetermined sea surface wave mathematical model. And an operation processing section that includes a motion simulation calculation section that calculates the motion of the aircraft based on the maneuvering state and the three-dimensional sea surface wave information of the first three-dimensional sea surface wave simulation calculation section, and the predetermined sea surface wave mathematical model. From the second 3D sea surface wave simulation calculation unit and calculation processing unit that calculates the 3D sea surface wave information necessary for displaying the sea surface wave image at the time after the response time of the simulated field of view display by manipulating input by the same formula The sea surface as seen from the aircraft at the time after the response time of the simulated visual field display by maneuvering input rather than the current time based on the data-transferred motion information of the aircraft and the three-dimensional sea surface wave information of the second three-dimensional sea surface wave simulation calculator. Wave simulation It is made of a simulated view generator and a video generating unit which generates a field image.

[0011]

The function of the sea surface wave simulated visual field generating method according to the present invention is as follows. The arithmetic processing unit calculates the three-dimensional sea surface wave information necessary for simulating the motion of the aircraft at the current time t, and also calculates the motion of the aircraft based on the operation state and the information of the three-dimensional sea surface wave. The three-dimensional sea surface wave information required for displaying the sea surface wave image at time t + Δt (Δt: response time of simulated view display by maneuvering input) is calculated in the simulated field device. A simulated visual field image of the sea surface wave seen from the aircraft is generated from the motion information of the aircraft from the arithmetic processing unit and the three-dimensional sea surface wave information at time t + Δt calculated by the simulated visual field device unit. As the simulated view image of the sea surface wave, an image of the sea surface wave at the same time is displayed at time t + Δt.

The sea surface wave simulation visual field generating device according to the present invention operates as follows. The first three-dimensional sea surface wave simulation calculation unit in the arithmetic processing unit calculates three-dimensional sea surface wave information necessary for simulating the motion of the aircraft at the current time t. Further, the motion simulation calculation unit calculates the motion of the aircraft based on the maneuvering state and the three-dimensional sea surface wave information of the first three-dimensional sea surface wave simulation calculation unit. Time t + Δ in the second three-dimensional sea surface wave simulation calculator
The three-dimensional sea surface wave information necessary for displaying the sea surface wave image of t is calculated. The image generation processing unit receives time t + based on the motion information of the aircraft sent from the arithmetic processing unit and the three-dimensional sea surface wave information at time t + Δt calculated by the second three-dimensional sea surface wave simulation calculation unit.
Generate a simulated field-of-view image of sea surface waves as seen from an aircraft of Δt. In the simulated field-of-view image, the sea surface image and the motion information of the aircraft are synchronized at time t + Δt.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a functional block diagram for implementing the present invention. FIG. 2 is a timing chart of each part of the present invention. In FIG. 1, 10
1 is an arithmetic processing unit, 102 is an instructor desk calculator, and 103 is a first
3D sea surface wave simulation calculation unit, 104 motion simulation calculation unit of airframe, 105 instructor desk, 106 cockpit, 107 simulated field of view device section, 108 simulated field of view generator, and 109 second
3D sea surface wave simulation calculator, 110 is an image generation processor,
Reference numeral 111 is a simulated visual field display device.

The wind direction, wind speed, sea surface condition (sea state), etc. are selected at the instructor desk 105, and by this selection, the instructor desk calculator 102 converts them into predetermined situation information. First
The three-dimensional sea surface wave simulation calculation unit 103 of
According to the situation information from 2, a predetermined three-dimensional sea surface wave mathematical model; H (x, y, t) is used, and the current time t, hull parts necessary for simulating the motion of the aircraft, that is, 3 at each coordinate Calculate dimensional sea surface information. The sea surface information includes wave height, wave rising speed, and wave rising acceleration. The first three-dimensional sea surface wave simulation calculation unit 103 sends the sea surface wave information to the motion simulation calculation unit 104 of the airframe, and the current time t information of the second three-dimensional sea surface wave simulation calculation of the simulated visibility device unit 107. Send to section 109. The coefficients of the three-dimensional sea surface mathematical model used for the three-dimensional sea surface mathematical model H (x, y, t); ai, ki, Lxi, Lyi, ωi, φi are
Only when the wind direction, wind speed, sea surface condition, etc. selected on the instructor's desk 105 is changed, the data is sent to the second three-dimensional sea surface wave simulation calculation unit 109. From the cockpit 106, the amount of maneuver operated according to the content of the training is input to the motion simulation calculation unit 104 of the machine. The motion simulation calculation unit 104 of the airframe receives the sea surface information (wave height, wave height from the first three-dimensional sea surface wave simulation calculation unit 103).
Wave swell speed, wave swell acceleration) and cockpit 1
By calculating the aerodynamic force acting on the aircraft and the hydraulic resistance acting on the aircraft at the time of landing and solving the equation of motion, the velocity, position of the aircraft,
Calculate posture etc. Information such as the position regarding these aircraft is sent to the image generation processing unit 110 of the simulated field-of-view device unit 107.

The second three-dimensional sea surface wave simulation calculation unit 109 is
A three-dimensional sea surface wave mathematical model having the same formula as the predetermined mathematical model in the first three-dimensional sea surface wave simulation calculator 103; H (x,
y, t), the first three-dimensional sea surface wave simulation calculator 103
The sea surface condition (wave state) at the point necessary for displaying the sea surface image at time t + Δt after the response time of the simulated visual field display by the pilot input by the pilot trainer than the current time t calculated by
It is calculated by (x, y, t + Δt), and the sea surface wave information is sent to the image generation processing unit 110.

The motion information of the aircraft sent from the motion simulation calculation unit 104 of the airframe to the image generation processing unit 110, and the second 3
Time t + Δt calculated by the three-dimensional sea surface wave simulation calculation unit 109
With the three-dimensional sea surface wave information of, a simulated field-of-view image viewed from the aircraft at time t + Δt is generated. In the simulated view image of the sea surface wave, the image of the sea surface wave at the time t + Δt is generated at the time t + Δt. This video signal is sent to the simulated visual field display device and displayed. This can be seen by the trainee in the cockpit 106 at time t + Δt, and the trainer can perform real-time aircraft landing training while watching the water surface condition at the same time t + Δt.

[0017]

As described above, according to the present invention, in the motion simulation calculation of the airframe and the simulated field-of-view device, three different time points are taken into consideration in consideration of the time difference of the response time (Δt) of the simulated field-of-view display due to the steering input. Dimensional sea surface wave simulation calculation is performed at the same time, and the sea surface information at the optimum time is processed for each of the aircraft motion simulation and the simulated visual field image display, so that the motion of the aircraft when landing in real time can be simulated. , It enables maneuvering while watching the sea surface image displayed in real time, the movement of the aircraft and the simulated field of view are synchronized, and the problem that the trainee feels uncomfortable during the watering training can be improved. it can.

Further, in the three-dimensional sea surface wave simulation calculation, the arithmetic processing unit processes the sea surface information necessary for simulating the motion of the airframe, and the simulated view device unit processes the sea surface information necessary for displaying the sea surface image. As a result, it is possible to significantly reduce the amount of data transferred regarding sea level information.

[Brief description of the drawings]

FIG. 1 is a functional block diagram for implementing the present invention.

FIG. 2 is a timing chart of each part for explaining the operation of the present invention.

FIG. 3 is a functional block diagram of a conventional video processing device.

FIG. 4 is a timing chart of each unit for explaining the operation of the conventional video processing device.

FIG. 5 is a diagram illustrating a positional relationship between a body, a sea surface, and waves.

[Explanation of symbols]

101 ... Arithmetic processing unit, 102 ... Instructor desk calculation unit, 103 ...
First three-dimensional sea surface wave simulation calculation unit, 104 ... Airframe motion simulation calculation unit, 105 ... Instructor desk, 106 ... Pilot seat, 107 ...
Simulated field of view device section, 108 ... Simulated field of view generator, 109 ...
Second three-dimensional sea surface wave simulation calculation unit, 110 ... Image generation processing unit, 111 ... Simulated view display device.

Claims (2)

[Claims] 1. In the iterative processing process of the real-time simulator, the arithmetic processing unit calculates three-dimensional sea surface wave information necessary for simulating the motion of the aircraft at the current time by a predetermined sea surface wave mathematical model, and the control state. And calculate the motion of the aircraft by the information of the three-dimensional sea surface wave,
The three-dimensional sea surface wave information necessary for displaying the sea surface wave image at the time after the response time of the simulated field of view display by the control input than the current time is calculated by the same formula as the sea surface wave mathematical model and the arithmetic processing The aircraft at the time after the response time of the simulated field of view display by maneuvering input from the current time, based on the motion information of the aircraft transferred from the data section and the three-dimensional sea surface wave information at the time after the time calculated by the simulated field of view device section. A method for generating a simulated sea surface field of view characterized by generating a simulated field-of-view image of sea surface waves. 2. A first three-dimensional sea surface wave simulation calculation unit for calculating three-dimensional sea surface wave information necessary for simulating the motion of an aircraft at the current time by a predetermined sea surface wave mathematical model, a maneuvering state and the first An arithmetic processing unit including a motion simulation calculation unit that calculates the motion of the aircraft based on the three-dimensional sea surface wave information of the three-dimensional sea surface wave simulation calculation unit, and a steering input from the current time using the same formula as the predetermined sea surface wave mathematical model. The second three-dimensional sea surface wave simulation calculator that calculates the three-dimensional sea surface wave information necessary for displaying the sea surface wave image at the time after the response time of the simulated visual field display and the motion information of the aircraft transferred from the arithmetic processing unit An image for generating a simulated field-of-view image of the sea-wave seen from the aircraft at the time after the response time of the simulated field-of-view display by maneuvering input rather than the current time based on the three-dimensional sea-surface wave information of the second three-dimensional sea-wave simulation calculation unit With the generation processing unit And a simulated field-of-view generator provided with.