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公开(公告)号：JPH0862091A
公开(公告)日：1996-03-08
申请号：JP21958194
申请日：1994-08-23
Applicant: NAT AEROSPACE LAB , NAT SPACE DEV AGENCY
Inventor： NAKATANI TERUOMI , OKAMOTO OSAMU , KUWANO NAOAKI , SUZUKI SEIZO , SASA SHUICHI , NAKAYASU HIDEHIKO , KOSAKA MASAKAZU
Abstract: PURPOSE: To obtain a flight motion simulator for obtaining a compact three- dimensional air flow generator for generating a three-dimensional air flow which is similar to a wind tunnel, verifying and evaluating a flight control system for the change of an aircraft for air on the ground using the generator, and simulating flight motion due to the change for air. CONSTITUTION: A three-dimensional air-flow generator 1 is constituted of a compact wind tunnel part 2 for creating a three-dimensional air flow at an arbitrary wind speed and a two-axis angle deformation mechanism 3 for arbitrarily changing air-flow angle in conical motion with a nozzle blow-up port as a top at the wind tunnel part, the generator l is positioned at the tip of a polygonal truncated pyramid type Point tube type probe 50 provided at an active control aircraft 49 for air, and a three-dimensional air flow is generated to verify the flight control system for the change of the active control aircraft for air. Also, a three-dimensional air-flow generator and an air-flow sensor probe are provided at a flight motion simulator, thus simulating the flight motion based on the change for air.
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公开(公告)号：JPH0858697A
公开(公告)日：1996-03-05
申请号：JP21958294
申请日：1994-08-23
Applicant: NAT AEROSPACE LAB , NAT SPACE DEV AGENCY
Inventor： NAKATANI TERUOMI , OKAMOTO OSAMU , KUWANO NAOAKI , SUZUKI SEIZO , SASA SHUICHI , NAKAYASU HIDEHIKO , KOSAKA MASAKAZU
Abstract: PURPOSE: To quickly control the airspeed for the stabilization thereof by obtaining an airspeed vector for a change relative to the air on a real time basis for the supply thereof to a control system, and predicting a flight motion induced due to the change relative to the air. CONSTITUTION: This device has an air data sensor probe 1 formed out of polygonal truncated pyramid Pitot tube type probe, and an airspeed vector signal processor 2 calculates an airspeed vector on the basis of relative air pressure information detected with the probe 1. In addition, an airspeed vector signal is inputted to an onboard control computer 3 in parallel to a signal from each type of aircraft body movement detection sensor 4 and read into an air control system. Thereafter, a flight motion induced due to a change relative to the air is thereby predicted to generate a flight control rule for stabilizing the control of the airspeed.
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Patent Agency Ranking
公开(公告)号：JP2002245439A
公开(公告)日：2002-08-30
申请号：JP2001044546
申请日：2001-02-21
Applicant: NAT AEROSPACE LAB OF JAPAN MEX
Inventor： SASA SHUICHI , GOMI HIROMI , YAMAGUCHI ISAO , NINOMIYA TETSUJIRO , HAMADA YOSHIRO
Abstract: PROBLEM TO BE SOLVED: To develop a high speed solution calculating method that does not need repeated calculations and also to provide a system for performing the high speed solution calculating method in a shape reproducing method for find ing out the shape of an object from the shadow of a gradation image acquired by a monocular camera. SOLUTION: This shape reproducing method from shadows employs the relational expression of the Tsai and Sha method obtained by modeling the relation among the luminance value of a lattice point (i and j) of an image obtained by photographing the object that is illuminated by parallel rays from a known direction and has known reflectance with the monocular camera, the inclinations (pi,j and qi,j) of the object at the lattice point and shape depth coordinates zi,j, and comprises a step for obtaining an approximate expression by substituting pi,j=zi,j-zi-1,j, and qi,j=zi,j-zi,j-1 by linear approximation for inclinations, a step for squaring the approximate expression, a step for obtaining zi,j as the solution of a quadratic expression with respect to the zi,j, and a step for totalizing individual lattice points, and obtains a solution not with the respected calculations but with a single calculation.
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公开(公告)号：JP2002156227A
公开(公告)日：2002-05-31
申请号：JP2000349033
申请日：2000-11-16
Applicant: NAT AEROSPACE LAB
Inventor： GOMI HIROMI , SASA SHUICHI , YAMAMOTO HIROMICHI
IPC: G01C11/06 , B64D45/04 , B64G1/66 , G01B11/24 , G01B11/245
Abstract: PROBLEM TO BE SOLVED: To provide a stereoscopic vision system for detecting flat area provided with functions to perform self-diagnosis on displacements of the locations and attitudes of cameras due to vibrations, thermal deformation, etc., during measuring operation, and to verify the reliability of measurements in the stereoscopic vision system mounted on a lunar surface survey instrument, etc., and suitable for landing. SOLUTION: In the stereoscopic vision system for measuring the undulations of the ground from two images photographed by directing toward the ground the right and left cameras installed at a predetermined interval, the image of one camera is parallelly moved in the y-axis direction and the x-axis direction so that correlation is heightened most when the image of the one camera is superposed with reference to the image of the other camera, and the image of the one camera is rotated in the z-axis direction to detect the amount of correction based on displacements of the locations and attitudes of the cameras. The image of the one camera corrected by the amount of correction is combined with the image of the other camera to execute stereoscopic vision measurements.
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公开(公告)号：JP2002257543A
公开(公告)日：2002-09-11
申请号：JP2001059558
申请日：2001-03-05
Applicant: NAT AEROSPACE LAB OF JAPAN MEX
Inventor： SASA SHUICHI , GOMI HIROMI , YAMAMOTO HIROMICHI
IPC: G01C11/06 , G01B11/24 , G01B11/245
Abstract: PROBLEM TO BE SOLVED: To provide a stereo camera system capable of solving the problem in the stereo camera system, ensuring corresponding point search between two images to thereby make deduction of a parallax value accurate, thereby increasing certainty of object shape recognition, and heightening its reproduction accuracy. SOLUTION: In this high precision stereo vision using a continuous frame image, plural pairs of stereo images from different viewpoints of a non- deformable object, and the corresponding point search having high correlation between each pair of images is executed to detect the parallax, and the object shape is operated from the parallax value, and the corresponding point search is executed similarly between each pair, and the object shape is operated, and data are accumulated, and overall operation of accumulated information is executed, to thereby ensure the object shape estimation value.
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公开(公告)号：JP2000207567A
公开(公告)日：2000-07-28
申请号：JP357699
申请日：1999-01-11
Applicant: NAT AEROSPACE LAB
Inventor： SASA SHUICHI , NINOMIYA TETSUJIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a method and device to provide a position and attitude information calculating system with precision based on the object image on the ground, especially, the new position and attitude information calculating system by which more certain position and attitude information is obtained by juxtaposing the conventional position and attitude calculating means mounted on an aircraft and also the information with a high reliability is obtained even in case a fault occurs in another meter. SOLUTION: The inclined angle of a horizon image, the position of a disappearing point and the inclination coefficients of the two lines of both-side boundaries on a runaway are detected on a runaway screen whose image is picked-up a camera attached to the nose of the aircraft, a bank angle is calculated by the inclined angle of the horizon, a yaw angle and a pitch angle are calculated based on the Eulerian coordinate transforming formula of earth coordinates with screen coordinates through the use of the coordinate position of the disappearing point and also altitude information and a runaway width direction position are calculated based on the Eulerian coordinate transforming formula of the earth coordinates and the screen coordinates through the use of the inclination coefficients of the two lines in the both-side boundaries of the runaway and the values of the bank angle, the yaw angle and the pitch angle of the aircraft.
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公开(公告)号：JPH05303616A
公开(公告)日：1993-11-16
申请号：JP27908691
申请日：1991-10-25
Applicant: NAT AEROSPACE LAB , MITSUBISHI PRECISION CO LTD
Inventor： WATANABE AKIRA , WAKAIRO KAORU , SASA SHUICHI , FUJINO MASARU , OGATA MASATO
Abstract: PURPOSE:To readily select the object to be corrected without requiring special knowledge by dividing the object into elements at its display and taking the element as an object when the result discriminating the right or wrong of the selection is correct. CONSTITUTION:When an operator selects the menu BR, for example, the video display is changed. As the display includes a part to be corrected, the selected operation is judged to be correctly performed. An object should be branched into OL and OR and the object OR is designed to include objects ORR and ORL. In this case, when the operator selects the menu BR again, the object ORR is selected but a part to be corrected (object ORL) is not included so that the selected operation is judged to be incorrectly performed. In this case, by selecting the R one-rank higher than the menus BR and BL, the upper object OR including the object ORR is displayed again on the video display device. When the menu BL is selected, the object ORL is properly selected.
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