CN113109194A - Test method and system for generating mechanical excitation through electromagnetic driving - Google Patents
Test method and system for generating mechanical excitation through electromagnetic driving Download PDFInfo
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- CN113109194A CN113109194A CN202110245511.XA CN202110245511A CN113109194A CN 113109194 A CN113109194 A CN 113109194A CN 202110245511 A CN202110245511 A CN 202110245511A CN 113109194 A CN113109194 A CN 113109194A
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- 230000005284 excitation Effects 0.000 title claims abstract description 101
- 238000010998 test method Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000000007 visual effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003721 gunpowder Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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Abstract
A test method and a system for generating mechanical excitation by electromagnetic driving belong to the technical field of test and test. The method is that an energized excited projectile body is placed in a strong magnetic field, and the initial speed and the kinetic energy of the excited projectile body are adjusted by controlling the intensity of current and the mass of the excited projectile body, so that the excitation strength required by a mechanical excitation test is achieved. A typical test system of the test method consists of an electromagnetic drive module, an excitation bomb, a laser aiming range finder, a movable bearing pier, a power supply system, an excitation intensity control system, an excited object fixing device, an excited object and an image acquisition system.
Description
Technical Field
The invention relates to a test method and a test system for generating mechanical excitation by electromagnetic driving, and belongs to the technical field of test and test.
Background
The common modes for carrying out mechanical excitation and low-vulnerability assessment on ammunition comprise gun striking, blasting and fragment, the three modes need to convert the chemical energy of gunpowder into the kinetic energy and the heat energy of a bullet, the requirement on the field is strict, the test cost is high, and the safety risk is high. A new mechanical excitation approach is required to account for the low vulnerability of nuclear ammunition.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the test method and the test system for generating mechanical excitation by electromagnetic driving are provided, the defects of high cost, high specification field and high safety risk of the traditional ammunition mechanical excitation assessment mode are overcome, and the ammunition mechanical excitation assessment mode which is safe, efficient, flexible and low in cost is provided.
The technical solution of the invention is as follows: a test method for generating mechanical excitation by electromagnetic drive is characterized in that an electrified excitation bomb is placed in a strong magnetic field, and the initial speed and the kinetic energy of the excitation bomb are adjusted by controlling the intensity of current and the mass of the excitation bomb, so that the excitation strength required by the mechanical excitation test is achieved.
A test system for generating mechanical excitation by electromagnetic driving for realizing the test method for generating mechanical excitation by electromagnetic driving comprises an electromagnetic driving module, an excitation projectile body, a laser aiming distance measuring instrument, a movable bearing pier, a power supply system, an excitation intensity control system, an excited object fixing device, an excited object and an image acquisition system;
the electromagnetic driving module is used for applying strong thrust to the excited projectile body so as to accelerate the projectile body to the required speed and then fly out;
the exciting projectile body is used for generating direct mechanical excitation on an excited object;
the laser aiming distance meter is used for electromagnetically driving the mechanical excitation device to aim at an excited object and measuring the distance between the excited object and the mechanical excitation device; the mechanical excitation device is a device for generating mechanical excitation;
the power supply system is used for supplying power to the laser aiming distance measuring instrument, the electromagnetic driving module and the excitation intensity control system;
the excitation intensity control system obtains a current value required by a test and supplied to the electromagnetic driving module according to the relation among the excitation intensity required by the excited object, the mass of the excited projectile body, the distance between the mechanical excitation device and the excited object and the current and electromagnetic force of the electromagnetic driving module, so as to control the current supply amount of the power supply system to the electromagnetic driving module;
the movable bearing pier is used for fixing the electromagnetic driving module and adjusting the distance between the electromagnetic driving module and an excited object through a moving device arranged on the movable bearing pier so as to adapt to test sites with different specifications;
the excited object fixing device is used for fixing an excited test object, and the image acquisition system is used for acquiring a test image.
Furthermore, the electromagnetic driving module is provided with a structure for generating a strong magnetic field by electrifying and a structure for driving the excitation bullet body, a magnetic field is generated when the electromagnetic driving module is electrified, and the intensity of the magnetic field is changed by adjusting the intensity of current for generating the strong magnetic field structure, so that the electrified excitation bullet body is subjected to corresponding electromagnetic force in the magnetic field.
Furthermore, the excitation projectile body is made of an electrified material, and the shape of the projectile body can be correspondingly adjusted according to the test requirements.
Furthermore, the bottom of the movable bearing pier is provided with a roller with a telescopic structure for moving the movable bearing pier; the side surface is provided with a stud connecting hole for fixing the electromagnetic driving module.
Furthermore, the bottom of the excited object fixing device is provided with a roller with a telescopic structure for moving the excited object fixing device, and the upper part of the excited object fixing device is provided with a positioning baffle for fixing the excited object.
The test method for generating the mechanical excitation by the electromagnetic drive, which is realized according to the test system for generating the mechanical excitation by the electromagnetic drive, comprises the following steps:
determining the kinetic energy required by well exciting the projectile body according to the evaluation indexes of the excited object;
the excited object is installed and fixed on the excited object fixing device;
determining the distance between the electromagnetic driving module and the excited object according to the field condition;
determining the speed of the excited projectile body leaving the electromagnetic driving module according to the obtained kinetic energy and the distance;
obtaining the current to be supplied to the electromagnetic driving module by the excitation intensity control system according to the speed of the excited projectile body leaving the electromagnetic driving module, the relation between the electromagnetic force and the current of the electromagnetic driving module and the mass of the excited projectile body;
adjusting the distance between the laser aiming distance measuring instrument and the excited object, fixing the electromagnetic driving module on the movable bearing pier, moving the movable bearing pier to the position of the laser aiming distance measuring instrument, enabling an accelerating channel of the electromagnetic driving module to be parallel to the laser, enabling an outlet of the accelerating channel to be flush with a laser emitting port, and fixing the bearing pier;
adjusting the shooting visual angle of the image acquisition system, and starting the image acquisition system;
evacuating field personnel, starting a test, and controlling a power supply system to supply current specified by an electromagnetic driving module through an excitation intensity control system;
and observing the test condition through the image acquisition system, and after the safe time passes, viewing the test result on the test site and taking pictures.
Furthermore, the kinetic energy required by the excitation of the projectile body is determined by preset assessment indexes and is represented by the weight and the speed of the excitation projectile body.
Further, the distance between the laser aiming distance meter and the excited object is adjusted, and the excited object is mounted on the excited object fixing device, so that the distance between the laser aiming distance meter and the excited object is enabled to be a required value.
Further, the current supplied to the electromagnetic driving module controls the current intensity output by the power supply system through the excitation intensity control system.
Compared with the prior art, the invention has the advantages that:
(1) the mechanical excitation source is driven by electromagnetism and provides required kinetic energy, and chemical energy is not provided, so that compared with the traditional ammunition, kinetic energy is provided by the release of chemical energy of gunpowder and the like, and the test means is safer;
(2) the test method can provide the adjustment of the excitation energy continuity, the preparation time interval required by the tests with different excitation intensity indexes is short, and the test efficiency is greatly improved;
(3) the excitation projectile body is pushed by electromagnetic force to provide kinetic energy, the electromagnetic force is generated by electric energy consumed by the electromagnetic driving module, and compared with the traditional ammunition cost, the cost of electricity is low, so that the test cost is greatly reduced;
(4) the method can adjust the kinetic energy of the excited projectile body through the adjusted current, and can normally perform the test under the condition of limited field; it requires lowly to the experiment place specification, and the flexibility is strong.
Drawings
FIG. 1 is a schematic diagram of a testing system for generating mechanical excitation by electromagnetic driving according to the present invention.
Detailed Description
In order to better understand the technical solutions, the technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
The following describes in further detail a test method for generating mechanical excitation by electromagnetic driving provided by an embodiment of the present application with reference to the drawings of the specification, and as shown in fig. 1, a typical system corresponding to the method includes an electromagnetic driving module, an excitation projectile, a laser aiming range finder, a movable force-bearing pier, a power supply system, an excitation intensity control system, an excited object fixing device, an excited object, and an image acquisition system. The electromagnetic driving module is used for applying strong thrust to the excited projectile body so as to accelerate the projectile body to the required speed and then fly out. The exciting projectile is used for generating direct mechanical excitation to the excited object. The laser aiming range finder is used for electromagnetically driving a device (mechanical excitation device) generating mechanical excitation to aim at an excited object and measuring the distance between the excited object and the mechanical excitation device. The power supply system is used for supplying power to the laser aiming distance measuring instrument, the electromagnetic driving module and the excitation intensity control system. The excitation intensity control system obtains the current value required by the experiment and supplied to the electromagnetic driving module according to the relation among the excitation intensity required by the excited object, the mass of the excited projectile body, the distance between the mechanical excitation device and the excited object and the current and the electromagnetic force of the electromagnetic driving module, so as to control the current supply amount of the power supply system to the electromagnetic driving module. The movable bearing pier is used for fixing the electromagnetic driving module and adjusting the distance between the electromagnetic driving module and the excited object through a moving device arranged on the movable bearing pier so as to adapt to test sites with different specifications. The excited object fixing device is used for fixing an excited test object, and the image acquisition system is used for acquiring a test image.
In the scheme provided by the embodiment of the application, in the mechanical excitation test method, the excitation intensity control system obtains the current value required by the test and supplied to the electromagnetic driving module according to the excitation intensity required by the excited object, the mass of the excited elastomer, the distance between the mechanical excitation device and the excited object and the relation between the current and the electromagnetic force of the electromagnetic driving module, so as to control the supply amount of the current of the power supply system to the electromagnetic driving module and generate the mechanical excitation source meeting the requirement. The method belongs to the field of test.
The system corresponding to the test method for generating mechanical excitation by electromagnetic driving comprises a laser aiming distance measuring instrument 1, an electromagnetic driving module 2, an exciting projectile body 3, a movable bearing pier 4, a power supply system 5, an excitation intensity control system 6, an excited object fixing device 7, an excited object 8 and an image acquisition system 9.
A test method for generating mechanical excitation by electromagnetic drive comprises the following specific steps:
determining the kinetic energy required by well exciting the projectile body according to the evaluation indexes of the excited object;
determining the distance between the electromagnetic driving module and the excited object according to the field condition;
determining the speed of the excited projectile body leaving the electromagnetic driving module according to the kinetic energy and the distance obtained by the sum;
obtaining the current to be supplied to the electromagnetic driving module by the excitation intensity control system according to the speed of the excited projectile body leaving the electromagnetic driving module, the relation between the electromagnetic force and the current of the electromagnetic driving module and the mass of the excited projectile body;
adjusting the distance between the laser aiming distance measuring instrument and the excited object, fixing the electromagnetic driving module on the movable bearing pier, moving the movable bearing pier to the position of the laser distance measuring instrument, enabling an accelerating channel of the electromagnetic driving module to be parallel to the laser, enabling an outlet of the accelerating channel to be flush with a laser emitting port, and fixing the bearing pier;
adjusting the shooting visual angle of the image acquisition system, and starting the image acquisition system;
evacuating field personnel, starting a test, and controlling a power supply system to supply current specified by an electromagnetic driving module through an excitation intensity control system;
and observing the test condition through the image acquisition system, and after the safe time passes, viewing the test result on the test site and taking pictures.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (10)
1. A test method for generating mechanical excitation by electromagnetic drive is characterized in that an electrified excitation projectile body (3) is placed in a strong magnetic field, and the initial speed and the kinetic energy of the excitation projectile body (3) are adjusted by controlling the intensity of current and the mass of the excitation projectile body (3), so that the excitation strength required by the mechanical excitation test is achieved.
2. A test system for generating mechanical excitation by electromagnetic actuation for carrying out the method of claim 1, wherein: the device comprises an electromagnetic driving module (2), an excitation projectile body (3), a laser aiming range finder (1), a movable bearing pier (4), a power supply system (5), an excitation intensity control system (6), an excited object fixing device (7), an excited object (8) and an image acquisition system (9);
the electromagnetic driving module (2) is used for applying strong thrust to the excited projectile body (3) to accelerate the projectile body to the required speed and then fly out;
the exciting projectile body (3) is used for generating direct mechanical excitation on an excited object (8);
the laser aiming range finder (1) is used for electromagnetically driving a mechanical excitation device to aim at an excited object (8) and measuring the distance between the excited object (8) and the mechanical excitation device; the mechanical excitation device is a device for generating mechanical excitation;
the power supply system (5) is used for supplying power to the laser aiming distance measuring instrument (1), the electromagnetic driving module (2) and the excitation intensity control system (6);
the excitation intensity control system (6) obtains the current value required by the test and supplied to the electromagnetic driving module (2) according to the relation between the excitation intensity required by the excited object (8), the mass of the excited projectile body (3), the distance between the mechanical excitation device and the excited object (8) and the current and the electromagnetic force of the electromagnetic driving module (2), so as to control the current supply amount of the power supply system (5) to the electromagnetic driving module (2);
the movable bearing pier (4) is used for fixing the electromagnetic driving module (2) and adjusting the distance between the electromagnetic driving module (2) and the excited object (8) through a moving device, so that the movable bearing pier is suitable for test sites with different specifications;
the excited object fixing device (7) is used for fixing an excited test object, and the image acquisition system (9) is used for acquiring a test image.
3. An electromagnetically driven mechanical excitation test system as claimed in claim 2, wherein: the electromagnetic driving module (2) is provided with a structure which is electrified to generate a strong magnetic field and a structure which drives the excitation bullet body (3), the magnetic field is generated when the electromagnetic driving module is electrified, the magnetic field intensity is changed by adjusting the current intensity of the structure which generates the strong magnetic field, and the electrified excitation bullet body (3) is subjected to corresponding electromagnetic force in the magnetic field.
4. An electromagnetically driven mechanical excitation test system as claimed in claim 2, wherein: the excitation projectile body (3) is made of an electrified material, and the shape of the projectile body can be correspondingly adjusted according to the test requirements.
5. An electromagnetically driven mechanical excitation test system as claimed in claim 2, wherein: the bottom of the movable bearing pier (4) is provided with a roller with a telescopic structure and used for moving the movable bearing pier (4); the side surface is provided with a stud connecting hole for fixing the electromagnetic driving module (2).
6. An electromagnetically driven mechanical excitation test system as claimed in claim 2, wherein: the bottom of the excited object fixing device (7) is provided with a roller with a telescopic structure for moving the excited object fixing device (7), and the upper part of the excited object fixing device is provided with a positioning baffle for fixing the excited object (8).
7. An electromagnetic drive generated mechanical excitation test method implemented by an electromagnetic drive generated mechanical excitation test system according to claim 2, comprising the steps of:
determining the kinetic energy required by well exciting the projectile body (3) according to the assessment indexes of the excited object (8);
the excited object (8) is installed and fixed on the excited object fixing device (7);
determining the distance from the electromagnetic driving module (2) to the excited object (8) according to the field condition;
determining the speed of the excited projectile body (3) away from the electromagnetic driving module (2) according to the obtained kinetic energy and the distance;
obtaining the current to be supplied to the electromagnetic driving module (2) by an excitation intensity control system (6) according to the speed of the excited projectile body (3) leaving the electromagnetic driving module (2), the relation between the electromagnetic force and the current of the electromagnetic driving module (2) and the mass of the excited projectile body (3);
the distance between the laser aiming range finder (1) and the excited object (8) is adjusted, the electromagnetic driving module (2) is fixed on the movable bearing pier (4), the movable bearing pier (4) is moved to the position of the laser aiming range finder, an accelerating channel of the electromagnetic driving module (2) is parallel to the laser, an outlet of the accelerating channel is flush with a laser emitting port, and the bearing pier is fixed;
adjusting the shooting visual angle of the image acquisition system (9), and starting the image acquisition system (9);
evacuating field personnel, starting a test, and controlling a power supply system (5) to supply current specified by an electromagnetic driving module (2) through an excitation intensity control system (6);
and observing the test condition through the image acquisition system (9), and after the safe time, viewing the test result on the test site and taking pictures.
8. A method of testing the generation of mechanical excitation by an electromagnetic drive according to claim 7, wherein: the kinetic energy required for exciting the projectile body (3) is determined by preset assessment indexes and is represented by the weight and the speed of the projectile body (3).
9. A method of testing the generation of mechanical excitation by an electromagnetic drive according to claim 7, wherein: the distance between the laser aiming distance measuring instrument (1) and the excited object (8) is adjusted, the excited object (8) is installed on the excited object fixing device (7), and the laser aiming distance measuring instrument (1) and the excited object (8) are moved to enable the distance between the laser aiming distance measuring instrument and the excited object to be a required value.
10. A method of testing the generation of mechanical excitation by an electromagnetic drive according to claim 7, wherein: the current supplied to the electromagnetic driving module (2) controls the current intensity output by the power supply system (5) through the excitation intensity control system (6).
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| CN202110245511.XA CN113109194A (en) | 2021-03-05 | 2021-03-05 | Test method and system for generating mechanical excitation through electromagnetic driving |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208206704U (en) * | 2018-05-23 | 2018-12-07 | 东北大学 | A kind of Hopkinson pressure bar bullet electromagnetism recyclable device |
| CN109828178A (en) * | 2017-11-23 | 2019-05-31 | 云南电网有限责任公司保山供电局 | A kind of localization method and system of transmission lines earth fault |
| CN111751072A (en) * | 2020-06-19 | 2020-10-09 | 东南大学 | Electromagnetic excitation hypergravity shaking table simulation device and simulation method |
-
2021
- 2021-03-05 CN CN202110245511.XA patent/CN113109194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196667A (en) * | 2013-04-01 | 2013-07-10 | 中国北方发动机研究所(天津) | Electromagnetism energizing connecting rod fatigue test bed |
| CN204695644U (en) * | 2015-05-29 | 2015-10-07 | 江苏六鑫科教仪器设备有限公司 | A kind of flat throwing and collision demonstrator |
| CN109828178A (en) * | 2017-11-23 | 2019-05-31 | 云南电网有限责任公司保山供电局 | A kind of localization method and system of transmission lines earth fault |
| CN208206704U (en) * | 2018-05-23 | 2018-12-07 | 东北大学 | A kind of Hopkinson pressure bar bullet electromagnetism recyclable device |
| CN111751072A (en) * | 2020-06-19 | 2020-10-09 | 东南大学 | Electromagnetic excitation hypergravity shaking table simulation device and simulation method |
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Application publication date: 20210713 |
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