CN103884471A - Gravity center measuring method - Google Patents
Gravity center measuring method Download PDFInfo
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- CN103884471A CN103884471A CN201410151676.0A CN201410151676A CN103884471A CN 103884471 A CN103884471 A CN 103884471A CN 201410151676 A CN201410151676 A CN 201410151676A CN 103884471 A CN103884471 A CN 103884471A
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Abstract
The invention discloses a gravity center measuring method. A locating point and a hanging point are marked on a tested object, a three-dimensional model of the tested object is marked corresponding to the positions of the locating point and the hanging point, then two-time hanging is carried out on the real tested object, after hanging, three-time photographing is carried out, a hanging line extension line in a photo and a locating point connecting line in the photo form an intersection point, a corresponding intersection point in the three-dimensional model is obtained according to the intersection point in the photo and according to the proportional relation, three locating planes with determined gravity center positions are obtained according to the connecting line of the intersection point and the hanging point, and the intersection point of the three locating planes is the gravity center of the tested object. The gravity center of the tested object can be effectively obtained by photographing combined with the three-dimensional model, and measuring is easy.
Description
Technical field
The present invention relates to the method for large-sized object center of gravity measurement.
Background technology
For truck cap, generally need the data of pilothouse centre of gravity place, design the switching mechanism mating with pilothouse by this centre of gravity place.At present also there is no to measure specially the method for this center of gravity.Under normal circumstances, only judge by rule of thumb the approximate location of center of gravity, cause focus position data inaccurate, affected the design accuracy of follow-up switching mechanism.
Summary of the invention
For the deficiencies in the prior art, the invention provides center of gravity measurement method.
The present invention is achieved through the following technical solutions: center of gravity measurement method, comprises the steps: 1) on two faces different to testee, choose lifting point A and the lifting point B of two lifting use; 2) mark at least 5 anchor point a, b, c, d, e on testee surface; 3) in testee three-dimensional model, above-mentioned lifting point and anchor point are marked; 4) material object is lifted along lifting point A, and take pictures facing to the material object of lifting state with a specific direction, obtain photo 1, determine the proportionate relationship of in kind in photo and physical three-dimensional model, process photo 1: extend the lifting line in photo 1, make the anchor point line in this extended line and photo produce intersection point e1 ' and e2 ', obtain under a proportional relationship intersection point e1 ' and e2 ' corresponding position e1, e2 in three-dimensional model, in three-dimensional model, connecting hanging is decorateeed A and intersection point e1, e2 obtain planar S 1; 5) take pictures facing to material object from the direction that is different from step 4, obtain photo 2, process photo 2 in mode identical in step 4, obtain lifting intersection point e3 ' and the e4 ' of line extended line and anchor point line, the position e3, the e4 that obtain under a proportional relationship e3 ' and e4 ' correspondence in three-dimensional model, connecting hanging decorates A and e3, e4 obtain planar S 2; 6) material object is lifted along lifting point B, and one specific direction take pictures facing to the material object of lifting state, obtain photo 3, process photo 3 in mode identical in step 4, obtain lifting intersection point e5 ' and the e6 ' of line extended line and anchor point line, the position e5, the e6 that obtain under a proportional relationship e5 ' and e6 ' correspondence in three-dimensional model, connecting hanging decorates A and e5, e6 obtain planar S 3; 7) the intersection point that obtains S1, S2 and tri-planes of S3 in three-dimensional model obtains the center of gravity of testee.
The present invention has following beneficial effect: the present invention can effectively obtain the center of gravity of testee in conjunction with three-dimensional model by taking pictures, measure easier.
Brief description of the drawings
Fig. 1 is the definite schematic diagram of center of gravity of the present invention.
Fig. 2 is the processing schematic diagram of photo 1 of the present invention.
Fig. 3 is the processing schematic diagram of photo 2 of the present invention.
Fig. 4 is the processing schematic diagram of photo 3 of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail: referring to Fig. 1 to Fig. 4, center of gravity measurement method, comprises the steps: 1) on two faces different to testee, choose lifting point A and the lifting point B of two lifting use; 2) mark at least 5 anchor point a, b, c, d, e on testee surface; 3) in testee three-dimensional model, above-mentioned lifting point and anchor point are marked; 4) material object is lifted along lifting point A, and take pictures facing to the material object of lifting state with a specific direction, obtain photo 1, determine the proportionate relationship of in kind in photo and physical three-dimensional model, process photo 1: extend the lifting line in photo 1, make the anchor point line in this extended line and photo produce intersection point e1 ' and e2 ', obtain under a proportional relationship intersection point e1 ' and e2 ' corresponding position e1, e2 in three-dimensional model, in three-dimensional model connecting hanging decorate A(now lifting point A be used as anchor point) and intersection point e1, e2 obtain planar S 1; 5) take pictures facing to material object from the direction that is different from step 4, obtain photo 2, process photo 2 in mode identical in step 4, obtain lifting intersection point e3 ' and the e4 ' of line extended line and anchor point line, the position e3, the e4 that obtain under a proportional relationship e3 ' and e4 ' correspondence in three-dimensional model, connecting hanging decorates A and e3, e4 obtain planar S 2; 6) material object is lifted along lifting point B, and one specific direction take pictures facing to the material object of lifting state, obtain photo 3, process photo 3 in mode identical in step 4, obtain lifting intersection point e5 ' and the e6 ' of line extended line and anchor point line, the position e5, the e6 that obtain under a proportional relationship e5 ' and e6 ' correspondence in three-dimensional model, connecting hanging decorates A and e5, e6 obtain planar S 3; 7) the intersection point that obtains S1, S2 and tri-planes of S3 in three-dimensional model obtains the center of gravity of testee.
Claims (1)
1. center of gravity measurement method, comprises the steps: 1) on two faces different to testee, choose lifting point A and the lifting point B of two lifting use; 2) mark at least 5 anchor point a, b, c, d, e on testee surface; 3) in testee three-dimensional model, above-mentioned lifting point and anchor point are marked; 4) material object is lifted along lifting point A, and take pictures facing to the material object of lifting state with a specific direction, obtain photo 1, determine the proportionate relationship of in kind in photo and physical three-dimensional model, process photo 1: extend the lifting line in photo 1, make the anchor point line in this extended line and photo produce intersection point e1 ' and e2 ', obtain under a proportional relationship intersection point e1 ' and e2 ' corresponding position e1, e2 in three-dimensional model, in three-dimensional model, connecting hanging is decorateeed A and intersection point e1, e2 obtain planar S 1; 5) take pictures facing to material object from the direction that is different from step 4, obtain photo 2, process photo 2 in mode identical in step 4, obtain lifting intersection point e3 ' and the e4 ' of line extended line and anchor point line, the position e3, the e4 that obtain under a proportional relationship e3 ' and e4 ' correspondence in three-dimensional model, connecting hanging decorates A and e3, e4 obtain planar S 2; 6) material object is lifted along lifting point B, and one specific direction take pictures facing to the material object of lifting state, obtain photo 3, process photo 3 in mode identical in step 4, obtain lifting intersection point e5 ' and the e6 ' of line extended line and anchor point line, the position e5, the e6 that obtain under a proportional relationship e5 ' and e6 ' correspondence in three-dimensional model, connecting hanging decorates A and e5, e6 obtain planar S 3; 7) the intersection point that obtains S1, S2 and tri-planes of S3 in three-dimensional model obtains the center of gravity of testee.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151676.0A CN103884471B (en) | 2014-04-16 | 2014-04-16 | Center of gravity measurement method |
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| CN201410151676.0A CN103884471B (en) | 2014-04-16 | 2014-04-16 | Center of gravity measurement method |
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| CN103884471A true CN103884471A (en) | 2014-06-25 |
| CN103884471B CN103884471B (en) | 2016-08-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458124A (en) * | 2014-11-27 | 2015-03-25 | 江西洪都航空工业集团有限责任公司 | Barycenter measuring method |
| CN106044566A (en) * | 2016-07-14 | 2016-10-26 | 中国华能集团清洁能源技术研究院有限公司 | Method for determining gravity center of article to be measured |
| CN106482897A (en) * | 2016-11-18 | 2017-03-08 | 安徽江淮汽车集团股份有限公司 | A kind of measuring method of the mass centre of Special-shaped object |
| CN111664997A (en) * | 2020-05-28 | 2020-09-15 | 东风汽车股份有限公司 | Measuring equipment and measuring method for mass center coordinates of cab of commercial vehicle |
| CN112362238A (en) * | 2020-11-13 | 2021-02-12 | 中国第一汽车股份有限公司 | Gravity center measuring method |
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| CN201302476Y (en) * | 2008-11-26 | 2009-09-02 | 中国第一汽车集团公司 | Mass and mass center measuring device of automobile steering room |
| WO2011120202A1 (en) * | 2010-04-01 | 2011-10-06 | 南京太阳升科技有限公司 | New method for propeller digital detection |
| CN102359846A (en) * | 2011-09-01 | 2012-02-22 | 中联重科股份有限公司 | Method and device for measuring height of center of gravity of object |
| US8229701B1 (en) * | 2010-05-11 | 2012-07-24 | The United States Of America, As Represented By The Secretary Of The Navy | System and method for measuring an object's center of gravity |
| CN102628724A (en) * | 2012-04-19 | 2012-08-08 | 江苏大学 | Fowl egg mass center detecting method based on image |
| CN103134638A (en) * | 2011-11-28 | 2013-06-05 | 波音公司 | Center of gravity determination |
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| CN201302476Y (en) * | 2008-11-26 | 2009-09-02 | 中国第一汽车集团公司 | Mass and mass center measuring device of automobile steering room |
| WO2011120202A1 (en) * | 2010-04-01 | 2011-10-06 | 南京太阳升科技有限公司 | New method for propeller digital detection |
| US8229701B1 (en) * | 2010-05-11 | 2012-07-24 | The United States Of America, As Represented By The Secretary Of The Navy | System and method for measuring an object's center of gravity |
| CN102359846A (en) * | 2011-09-01 | 2012-02-22 | 中联重科股份有限公司 | Method and device for measuring height of center of gravity of object |
| CN103134638A (en) * | 2011-11-28 | 2013-06-05 | 波音公司 | Center of gravity determination |
| CN102628724A (en) * | 2012-04-19 | 2012-08-08 | 江苏大学 | Fowl egg mass center detecting method based on image |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458124A (en) * | 2014-11-27 | 2015-03-25 | 江西洪都航空工业集团有限责任公司 | Barycenter measuring method |
| CN104458124B (en) * | 2014-11-27 | 2017-10-13 | 江西洪都航空工业集团有限责任公司 | A kind of centroid measurement method |
| CN106044566A (en) * | 2016-07-14 | 2016-10-26 | 中国华能集团清洁能源技术研究院有限公司 | Method for determining gravity center of article to be measured |
| CN106482897A (en) * | 2016-11-18 | 2017-03-08 | 安徽江淮汽车集团股份有限公司 | A kind of measuring method of the mass centre of Special-shaped object |
| CN111664997A (en) * | 2020-05-28 | 2020-09-15 | 东风汽车股份有限公司 | Measuring equipment and measuring method for mass center coordinates of cab of commercial vehicle |
| CN112362238A (en) * | 2020-11-13 | 2021-02-12 | 中国第一汽车股份有限公司 | Gravity center measuring method |
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| Publication number | Publication date |
|---|---|
| CN103884471B (en) | 2016-08-24 |
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Address after: Tonghui road Jiangbei District 315033 Zhejiang city of Ningbo province No. 366 Applicant after: NINGBO HUIZHONG AUTOMOTIVE CHASSIS MANUFACTURING CO., LTD. Address before: 315021, 369, east section, Ring North Road, Jiangbei District, Zhejiang, Ningbo Applicant before: Ningbo Yuejin Automobile Front Axle Co., Ltd. |
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