CN102175391B - Device and method for measuring gravity center position of infrared guidance missile guide head - Google Patents

Device and method for measuring gravity center position of infrared guidance missile guide head Download PDF

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CN102175391B
CN102175391B CN201010609866A CN201010609866A CN102175391B CN 102175391 B CN102175391 B CN 102175391B CN 201010609866 A CN201010609866 A CN 201010609866A CN 201010609866 A CN201010609866 A CN 201010609866A CN 102175391 B CN102175391 B CN 102175391B
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fixed
force transducer
target seeker
joint flange
reading
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CN102175391A (en
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耿亚光
孟令东
孙俊磊
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Hebei Hanguang Heavy Industry Ltd
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Hebei Hanguang Heavy Industry Ltd
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Abstract

The invention discloses a device and method for measuring the gravity center position of an infrared guidance missile guide head. A connecting flange and a horizontal rod are fixedly connected with a rotating shaft into a whole respectively; the guide head is fixed on the connecting flange; the two ends of the rotating shaft are fixed by using a bearing and a bearing seat; the bearing seat is fixed on a pedestal; a water level gauge is fixed on the top of the rotating shaft; the horizontal rod is provided with a number display meter; a force sensor is hinged at the right end of the horizontal rod; a tension ring of the force sensor is fixed at one end of a fine steel wire; the other end of the fine steel wire is fixed with a screw rod by bypassing a fixed pulley fixed on a base; and a nut seat matched with the screw rod is fixed on the base. The device has a simple structure, low cost and high measuring accuracy, and can be applied to spatial tri-axial measurement.

Description

The measurement mechanism and the measuring method thereof of infrared guidance missile homer centre of gravity place
Technical field
The present invention relates to a kind of measurement mechanism and measuring method thereof of object centre of gravity place, particularly a kind of measurement mechanism and measuring method thereof of infrared guidance missile homer centre of gravity place.
Background technology
Center of gravity is the center of the suffered gravity of object, and in fields such as space flight, navigation, electric power, machinery, vehicles, centre of gravity place is an exactly determined parameter of needs, and how accurately the centre of gravity place of Measuring Object just seems particularly important.
Have a kind of method now, and be placed on testee on the carrying platform by three or four LOAD CELLS supports,, measure the center of gravity of object through the stressed difference of survey sensor according to principle of moment balance with weight method Measuring Object center of gravity.The a kind of of patent CN 1769849A announcement is used for the quality of survey aircraft and the carrying device at random of centre of gravity place, and the gravity centre detection test stand for small-sized working machine that patent CN 101393064A announces all utilizes weight method to realize.Utilize the device of weight method Measuring Object center of gravity, if will obtain than higher measuring accuracy, just must improve the precision of each LOAD CELLS, this has increased use cost undoubtedly greatly, and whole apparatus structure is complicated, needs higher assembly precision.
Summary of the invention:
In order to overcome the shortcoming of prior art, the present invention provides a kind of measurement mechanism and measuring method thereof of infrared guidance missile homer centre of gravity place, and it is simple in structure, low cost, and measuring accuracy is high, can carry out spatial triaxial to measurement.
The present invention solves the technical scheme that its technical matters takes: joint flange and horizon bar are connected with turning axle respectively and form a whole, fixing target seeker on the said joint flange; The two ends dress of said turning axle is fixed through bearing and bearing seat, and bearing seat is fixed on the pedestal; The top of said turning axle is spirit-leveling instrument fixedly; On the said horizon bar digital display meter is housed; At the hinged force transducer of the right-hand member of horizon bar; The pulling force ring of force transducer is an end of finer wire fixedly, and the other end of finer wire is walked around the fixed pulley and the screw rod that are fixed on the base and fixed, and is fixed on the base with screw rod nut engaged seat.
A kind of measuring method of infrared guidance missile homer centre of gravity place comprises the following steps:
(a), target seeker is weighed, draw its weight G;
(b), in the bottom of target seeker its base coordinate system of definition (X, Y, Z);
(c), this device before assembling, with the length value of high precision measurer to joint flange and horizon bar, and the one-tenth-value thickness 1/10 of turning axle measures, and confirms distance parameter d 1, d 2, d 3, d x, d yAnd d zValue.
(d), before target seeker is not installed, rotary screw tension finer wire, and guarantee that finer wire in the track of pulley, transfers to horizontality with the bubble in the spirit-leveling instrument is from the reading F of digital display meter record force transducer 01
(e), any direction rotary screw certain angle, rotary screw in the opposite direction transfers to horizontality again with the bubble in the spirit-leveling instrument again, the reading F of record force transducer 02
(f), repeat a step (e) 3 times, respectively by the F that obtains of force transducer 03, F 04And F 05
(g), the mean value of computing power sensor reading: F 0=(F 01+ F 02+ F 03+ F 04+ F 05)/5;
(h), with firm being installed on the joint flange of target seeker, through rotary screw, the bubble in the spirit-leveling instrument is transferred to horizontality;
(i), write down the reading F of force transducer from digital display meter 1
(j), any direction rotary screw certain angle, rotary screw in the opposite direction transfers to horizontality with the bubble in the spirit-leveling instrument again; The reading F of record force transducer 2
(k), repeat a step (j) 3 times, respectively by the F that obtains of force transducer 3, F 4And F 5
(l), the mean value of computing power sensor reading: F X=(F 1+ F 2+ F 3+ F 4+ F 5)/5;
(m), according to lever principle, i.e. G * (d X+ d 2)=F * d 1, the barycentric coordinates value that obtains the X axis target seeker is d X=(F X* d 1)/G-d 2
(n), change joint flange into the another one joint flange, repeating step (c)～(m) in like manner can get, and the barycentric coordinates value of the axial target seeker of Y is d Y=(F Y* d 1)/G-d 3
(o), the target seeker that will go up in the step (n) is that the X axle revolves that to turn 90 degrees the back fixing along its base coordinate, repeating step (c)～(m) in like manner can get, the barycentric coordinates value of the axial target seeker of Z is d Z=(F Z* d 1)/G-d 3
Advantage of the present invention is: (1) measuring accuracy is high.Utilize simply again center of gravity measurement scheme, i.e. lever principle accurately.Higher part processing precision, reasonably assembly technology has adopted precision bearing, has selected high-precision spirit-leveling instrument, force transducer and digital display meter for use; (2) perfect in shape and function.For same measured piece, use different joint flanges and can carry out the measurement of spatial triaxial to measured piece to centre of gravity place with the mounting means that changes measured piece.For different measured pieces, use different joint flanges and carry out the measurement of measured piece centre of gravity place; (3) design of part simply is easy to processing, and device for measuring force has only been used a force transducer, has reduced manufacturing cost; (4) whole measurement process operation is simple, and the present invention also can be used for the measurement of other object centre of gravity place, and is applied widely.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the first embodiment of the invention front view;
Fig. 2 is the first embodiment of the invention vertical view;
Fig. 3 is the second embodiment of the invention front view.
Embodiment
A kind of measurement mechanism of infrared guidance missile homer centre of gravity place is shown in accompanying drawing.Joint flange 2 or 15 is connected with turning axle 4 respectively and forms a whole with horizon bar 8, fixing target seeker 1 on the said joint flange 2.The two ends dress of said turning axle 4 is fixing through bearing and bearing seat 5, and bearing seat 5 is fixed on the pedestal 14.The top of said turning axle 4 is spirit-leveling instrument 3 fixedly; On the said horizon bar 8 digital display meter 7 is housed; At the hinged force transducer 9 of the right-hand member of horizon bar 8; The pulling force ring of force transducer 9 is an end of finer wire 11 fixedly, and it is fixing with screw rod 13 that the other end of finer wire 11 is walked around the fixed pulley 10 that is fixed on the base 14, is fixed on the base 14 with screw rod 13 nut engaged seats 12.
Can be used for the measurement of different measured piece centre of gravity places among the present invention with the joint flange 2 or 15 of different structure.
A kind of measuring method of infrared guidance missile homer centre of gravity place comprises the following steps:
(a), target seeker 1 is weighed, draw its weight G;
(b), in the bottom of target seeker 1 its base coordinate system of definition (X, Y, Z);
(c), this device before assembling, with the high precision measurer to joint flange 2 or 15 with the length value of horizon bar 8, and the one-tenth-value thickness 1/10 of turning axle 4 measures, and confirms distance parameter d 1, d 2, d 3, d X, d YAnd d ZValue;
(d), before target seeker 1 is not installed, rotary screw 13, tension finer wire 11, and guarantee that finer wire 11 in the track of pulley 10, transfers to horizontality with the bubble in the spirit-leveling instrument 3 is from the reading F of digital display meter 7 record force transducers 9 01
(e), any direction rotary screw 13 certain angles, rotary screw 13 in the opposite direction transfers to horizontality with the bubble in the spirit-leveling instrument 3 again; The reading F of record force transducer 9 02
(f), repeat a step (e) 3 times, respectively by the F that obtains of force transducer 9 03, F 04And F 05
(g), the mean value of computing power sensor 9 readings: F 0=(F 01+ F 02+ F 03+ F 04+ F 05)/5;
(h), with target seeker 1 firm being installed on the joint flange 2, through rotary screw 13, the bubble in the spirit-leveling instrument 3 is transferred to horizontality;
(i), write down the reading F of force transducers 9 from digital display meter 7 1
(j), any direction rotary screw 13 certain angles, rotary screw 13 in the opposite direction transfers to horizontality with the bubble in the spirit-leveling instrument 3 again; The reading F of record force transducer 9 2
(k), repeat a step (j) 3 times, respectively by the F that obtains of force transducer 9 3, F 4And F 5
(l), the mean value of computing power sensor 9 readings: F X=(F 1+ F 2+ F 3+ F 4+ F 5)/5;
(m), according to lever principle, i.e. G * (d X+ d 2)=F * d 1, the barycentric coordinates value that obtains X axis target seeker 1 is d X=(F X* d 1)/G-d 2
(n), change joint flange 2 into joint flange 15, repeating step (c)～(m) in like manner can get, and the barycentric coordinates value of the axial target seeker 1 of Y is d Y=(F Y* d 1)/G-d 3
(o), the target seeker 1 that will go up in the step (n) is that the X axle revolves that to turn 90 degrees the back fixing along its base coordinate, repeating step (c)～(m) in like manner can get, the barycentric coordinates value of the axial target seeker 1 of Z is d Z=(F Z* d 1)/G-d 3
Described force transducer 9 is electrically connected with PC computing machine, data collecting card and electronic installation,, through data acquisition, data processing and the data presentation coordinate figure that changes target seeker 1 center of gravity into that the measured value of force transducer 9 is real-time, show by display.
The present invention can also be used for measuring such as the first-class target seeker of infrared guidance missile-operation control and other shape such as target seeker profile, has measurement elongated or tubbiness rotational symmetry heterogeneous body irregularly shaped object centre of gravity place.
The present invention can also be used for the measurement of other parts centre of gravity places.

Claims (3)

1. the measurement mechanism of an infrared guidance missile homer centre of gravity place; It is characterized in that: first joint flange (2) or second joint flange (15) and horizon bar (8) are connected with turning axle (4) respectively and form a whole, and said joint flange (2) is gone up fixedly target seeker (1); The two ends of said turning axle (4) are fixing through bearing and bearing seat (5), and bearing seat (5) is fixed on the base (14); The top of said turning axle (4) is spirit-leveling instrument (3) fixedly; Digital display meter (7) is housed on the said horizon bar (8); The hinged force transducer of right-hand member (9) at horizon bar (8); The pulling force ring of force transducer (9) is an end of finer wire (11) fixedly, and it is fixing with screw rod (13) that the other end of finer wire (11) is walked around the fixed pulley (10) that is fixed on the base (14), is fixed on the base (14) with screw rod (13) nut engaged seat (12).
2. according to the measuring method of the said measurement mechanism of claim 1, it is characterized in that: comprise the following steps:
(a), target seeker (1) is weighed, draw its weight G;
(b), in the bottom of target seeker (1) its base coordinate system of definition (X, Y, Z);
(c), this measurement mechanism before assembling, with the length value of high precision measurer to first joint flange (2) or second joint flange (15) and horizon bar (8), and the one-tenth-value thickness 1/10 of turning axle (4) measures, and confirms distance parameter d 1, d 2, d 3, d X, d YAnd d ZValue;
(d), target seeker (1) is not preceding installing, rotary screw (13), the finer wire that furthers (11), and guarantee that finer wire (11) in the track of fixed pulley (10), transfers to horizontality with the bubble in the spirit-leveling instrument (3), write down the reading F of force transducer (9) from digital display meter (7) 01
(e), any direction rotary screw (13) certain angle, rotary screw (13) in the opposite direction transfers to horizontality with the bubble in the spirit-leveling instrument (3) again; The reading F of record force transducer (9) 02
(f), repeat a step (e) 3 times, respectively by the F that obtains of force transducer (9) 03, F 04And F 05
(g), the mean value of computing power sensor (9) reading: F 0=(F 01+ F 02+ F 03+ F 04+ F 05)/5;
(h), with firm being installed on first joint flange (2) of target seeker (1), through rotary screw (13), the bubble in the spirit-leveling instrument (3) is transferred to horizontality;
(i), write down the reading F of force transducer (9) from digital display meter (7) 1
(j), any direction rotary screw (13) certain angle, rotary screw (13) in the opposite direction transfers to horizontality with the bubble in the spirit-leveling instrument (3) again; The reading F of record force transducer (9) 2
(k), repeat a step (j) 3 times, respectively by the F that obtains of force transducer (9) 3, F 4And F 5
(l), the mean value of computing power sensor (9) reading: F X=(F 1+ F 2+ F 3+ F 4+ F 5)/5;
(m), according to lever principle, i.e. G * (d X+ d 2)=F * d 1, the barycentric coordinates value that obtains X axis target seeker (1) is d X=(F X* d 1)/G-d 2
(n), change first joint flange (2) into second joint flange (15), repeating step (c)～(m) in like manner can get, and the barycentric coordinates value of the axial target seeker of Y (1) is d Y=(F Y* d 1)/G-d 3
(o), the target seeker (1) that will go up in the step (n) is that the X axle revolves that to turn 90 degrees the back fixing along its base coordinate, repeating step (c)～(m) in like manner can get, the barycentric coordinates value of the axial target seeker of Z (1) is d Z=(F Z* d 1)/G-d 3
3. measuring method according to claim 2; It is characterized in that: described force transducer (9) is electrically connected with PC computing machine, data collecting card and electronic installation; Through data acquisition, data processing and the data presentation coordinate figure that changes the measured piece center of gravity into that the measured value of force transducer (9) is real-time, show by display.
CN201010609866A 2010-12-15 2010-12-15 Device and method for measuring gravity center position of infrared guidance missile guide head Active CN102175391B (en)

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CN103925854B (en) * 2014-04-03 2015-12-02 北京星航机电装备有限公司 A kind of guided missile level measurement method based on three-dimensional coordinate transfer principle
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CN106909165B (en) * 2017-02-23 2019-12-03 上海航天控制技术研究所 Rotary missile body attitude information extracting method based on target seeker multisensor
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CN111999776B (en) * 2020-08-11 2023-10-31 北京惠风联合防务科技有限公司 Gravity center detection device
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037376A (en) * 1959-10-29 1962-06-05 Daniel J Grant Method of locating the center of gravity of a missile section
DE69307168D1 (en) * 1992-03-06 1997-02-20 Aerospatiale Arrangement for adjustable suspension for an object in a three-dimensional reference space
CN101074896A (en) * 2007-06-22 2007-11-21 武汉船用机械有限责任公司 Method for measuring blade static-balance gravity center
CN101793583A (en) * 2010-03-19 2010-08-04 天津修船技术研究所 Gravity center measurement instrument of propeller blade with variable screw pitch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037376A (en) * 1959-10-29 1962-06-05 Daniel J Grant Method of locating the center of gravity of a missile section
DE69307168D1 (en) * 1992-03-06 1997-02-20 Aerospatiale Arrangement for adjustable suspension for an object in a three-dimensional reference space
CN101074896A (en) * 2007-06-22 2007-11-21 武汉船用机械有限责任公司 Method for measuring blade static-balance gravity center
CN101793583A (en) * 2010-03-19 2010-08-04 天津修船技术研究所 Gravity center measurement instrument of propeller blade with variable screw pitch

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