A magnetic moment testing system

Abstract

The application provides a magnetic moment testing system, which comprises a testing platform and a two-dimensional motion platform, a three-dimensional motion platform, a magnetometer, a magnetic flux induction coil, a magnetic flux meter, a current-carrying magnetic moment coil installed on the testing platform; the devices required for testing the magnetic moment gauge by the substitution method, the magnetic field calculation method and the magnetic flux method are integrated on the testing platform, so that the application can directly select different methods according to different gauges, wherein the magnetometer and the current-carrying magnetic moment coil can be combined to test the magnetic moment gauge by the substitution method, the magnetometer can be used to measure the magnetic moment of the magnetic moment gauge by the calculation method, the magnetic flux induction coil and the magnetic flux meter can be used to test the magnetic moment gauge by the magnetic flux method, and the current-carrying magnetic moment coil can be used to verify the magnetic moment of the measured magnetic moment gauge as required, and the application is especially suitable for the magnetic moment measurement of heavy and large-value magnetic moment gauges.

Description

Technical Field

[0001] This invention belongs to the field of magnetic metrology technology, and in particular relates to a magnetic moment testing system. Background Technology

[0002] Constant magnetic moments have important applications in navigation, aerospace, and magnetic metrology. They are used for simulating ship magnetic fields; on satellites, magnetic torquers interact with the Earth's magnetic field to generate torque for attitude control. Currently, devices for generating constant magnetic moments generally use hollow magnetic moment coils, permanent magnets, or electromagnets. Electromagnets are passive devices and can only generate a single value of magnetic moment; the magnetic moment generated by a magnetic field coil is proportional to the current. Hollow magnetic moment coils produce magnetic moments with good linearity and high accuracy, and can generate continuous magnetic moments, but are only suitable for reproducing small magnetic moment values ​​or in applications where weight and volume requirements are not strict. Generating large-range magnetic moments results in very large weights. Magnetic moment measurement uses indirect methods, mainly measuring the magnetic field and magnetic moment generated. The magnetic field and magnetic moment generated by the magnetic moment are related to the measurement distance and speed. To ensure testing accuracy, the magnetic moment device must be precisely positioned and moved rapidly. Due to magnetic requirements, current testing systems are all moved manually. However, as the magnetic moment value increases, the weight increases significantly, and the speed and accuracy of manual movement can no longer meet the testing needs. In order to ensure the accuracy of the measurement, different measuring instruments use different testing systems, which increases the complexity of the system. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a magnetic moment testing system that enables the testing of the magnetic moment value of the measuring instrument using methods such as substitution, magnetic field calculation, and magnetic flux on the same testing platform.

[0004] A magnetic moment testing system includes a testing platform and a two-dimensional motion platform, a three-dimensional motion platform, a magnetometer, a magnetic flux induction coil, a magnetometer, and a current-carrying magnetic moment coil mounted on the testing platform.

[0005] The two-dimensional motion platform and the three-dimensional motion platform are installed in the slide rail of the test platform and can slide freely on the slide rail; the two-dimensional motion platform is used to carry the current-carrying magnetic moment coil; the three-dimensional motion platform is used to carry the magnetic moment measuring instrument to be measured; the magnetic flux induction coil is connected to the magnetometer and installed at the left end of the test platform, and the magnetometer is installed at the right end of the test platform.

[0006] When measuring the magnetic moment of a measuring instrument using the flux method, a flux induction coil and a magnetometer are used to measure the change in magnetic flux generated when the instrument moves. When measuring the magnetic moment of a measuring instrument using the substitution method and the magnetic field calculation method, a magnetometer is used to measure the magnetic field generated by the instrument. Simultaneously, in the substitution method, a current-carrying magnetic moment coil is used as a standard magnetic moment measuring instrument to compare the magnetic field generated by the instrument with that of the instrument being measured, thus achieving the testing of the magnetic moment. In the flux method and the magnetic field calculation method, the accuracy and reliability of the testing method are verified by using the current-carrying magnetic moment coil as a standard magnetic moment measuring instrument.

[0007] When testing the value of magnetic moment, the magnetic flux induction coil, the measuring instrument for the magnetic moment being measured, the magnetic moment of the current-carrying coil, and the magnetometer are all on the same axis.

[0008] Furthermore, both the two-dimensional motion platform and the three-dimensional motion platform are equipped with non-magnetic ultrasonic motors, which are used to drive the two-dimensional motion platform and the three-dimensional motion platform to move back and forth on the slide rail.

[0009] Furthermore, the test platform is divided into a test area and a parking area. The two-dimensional motion platform, the three-dimensional motion platform, the magnetometer, the magnetic flux induction coil, the magnetometer and the current-carrying magnetic moment coil are arranged in the test area, and the magnetic moment gauge to be measured is placed in the parking area when not in the test state. Each test method makes full use of the platform without interfering with each other.

[0010] Furthermore, after the magnetic moment gauge under test is tested, it is moved away from the magnetometer, magnetic flux induction coil, magnetometer, and current-carrying magnetic moment coil by a three-dimensional motion platform, and the magnetic axis is rotated 90° to improve the accuracy of magnetic moment testing.

[0011] Furthermore, the measuring instrument for the magnetic moment being measured is a magnet, an electromagnet, or a current-carrying magnetic field coil.

[0012] Beneficial effects:

[0013] 1. This invention provides a magnetic moment testing system that integrates the equipment required for testing the magnetic moment of a magnetic moment gauge using the substitution method, magnetic field calculation method, and magnetic flux method onto a single testing platform. This allows the invention to directly select different methods based on different gauges. Specifically, the combination of a magnetometer and a current-carrying magnetic moment coil enables the substitution method for testing magnetic moment gauges. The magnetometer can measure the magnetic moment of the gauge using the calculation method. The magnetic flux induction coil and magnetometer can test the magnetic moment gauge using the magnetic flux method. Furthermore, the current-carrying magnetic moment coil can be used to verify the measurement method as needed. This system is particularly suitable for measuring the magnetic moment of heavy, high-value magnetic moment gauges.

[0014] 2. This invention provides a magnetic moment testing system. The testing platform is divided into a testing area and a parking area according to different functions. The parking area is used for temporary storage and test preparation of the magnetic moment measuring instrument under test in the non-test state. Since the magnetic moment measuring instrument under test (magnetic moment and electromagnetic moment) itself has a fixed magnetic field, placing it in the parking area in the non-test state can reduce the influence of the magnetic field on the test.

[0015] 3. This invention provides a magnetic moment testing system. Due to the size difference of the magnetic moment measuring instrument being measured, the three-dimensional motion platform can perform three-dimensional motion to ensure that the magnetic moment measuring instrument being measured and the measuring instrument are on the same axis. For the magnetic moment measuring instruments such as magnets and electromagnets, since there is a residual magnetic moment in the non-working state, after the measurement is completed, it can be moved away from the testing equipment by the three-dimensional motion platform and the magnetic axis can be rotated 90° so that the magnetic field on the axis of the testing platform is close to zero.

[0016] 4. This invention provides a magnetic moment testing system. In order to ensure the accuracy of distance measurement and the speed of movement, the magnetic moment testing system uses a non-magnetic ultrasonic motor to drive two motion platforms to move back and forth, so as to achieve rapid movement and accurate distance measurement. This system can ensure both rapid movement and accurate positioning, and also ensure the non-magnetic design to reduce interference caused by changes in the external magnetic field. Attached Figure Description

[0017] Figure 1 This invention provides a structural block diagram of a magnetic moment testing system.

[0018] 1-Test platform, 2-Two-dimensional motion platform, 3-Three-dimensional motion platform, 4-Magnetometer, 5-Magnetic flux induction coil, 6-Magnetometer, 7-Current-carrying magnetic moment coil, 8-Measured magnetic moment gauge. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0020] This invention provides a magnetic moment testing system, particularly a magnetic moment testing system for determining the magnetic moment of magnets, electromagnets, and current-carrying magnetic moment coils, which tests the magnetic moment through different methods and can perform system self-testing using current-carrying magnetic field coils.

[0021] like Figure 1As shown, a magnetic moment testing system is characterized by comprising a testing platform 1 and, mounted on the testing platform 1, a two-dimensional motion platform 2, a three-dimensional motion platform 3, a magnetometer 4, a magnetic flux induction coil 5, a fluxmeter 6, and a current-carrying magnetic moment coil 7. The testing platform is functionally divided into a testing area and a parking area for placing the measured magnetic moment gauge. The measured magnetic moment gauge (such as the magnetic moment of a magnet or an electromagnet) possesses a fixed magnetic field and is therefore placed in the parking area when not in testing mode to prevent the magnetic field from affecting the test. The testing area is used to place the measured magnetic moment gauge, which can move on the platform and can be operated on as needed, such as for axis alignment and rotation. Furthermore, the entire testing platform is designed to be non-magnetic and is made of non-metallic or non-magnetic metallic materials.

[0022] The two-dimensional motion platform 2 and the three-dimensional motion platform 3 are installed in the slide rail of the test platform 1 and can slide freely on the slide rail; the two-dimensional motion platform 2 is used to carry the current-carrying magnetic moment coil 7; the three-dimensional motion platform 3 is used to carry the magnetic moment measuring instrument 8 to be measured; the magnetic flux induction coil 5 is connected to the magnetometer 6 and installed at the left end of the test platform 1, and the magnetometer 4 is installed at the right end of the test platform 1.

[0023] When the magnetic moment of the measuring instrument 8 is measured using the flux method, the change in magnetic flux generated during the movement of the measuring instrument is measured using the flux induction coil 5 and the magnetometer 6. When the magnetic moment of the measuring instrument 8 is measured using the substitution method and the magnetic field calculation method, the magnetic moment generated by the measuring instrument 8 is measured using the magnetometer 4. At the same time, in the substitution method, the current-carrying magnetic moment coil 7 is used as a standard magnetic moment measuring instrument to compare the magnetic field generated by the measuring instrument 8, thereby realizing the test of the magnetic moment. In the flux method and the magnetic field calculation method, the current-carrying magnetic moment coil 7 is used as a standard magnetic moment measuring instrument detection system to measure whether the standard measuring instrument detection measurement method is accurate. When testing the magnetic moment value, the flux induction coil 6, the measuring instrument 8, the current-carrying coil magnetic moment 7, and the magnetometer 4 are on the same axis.

[0024] In other words, when the substitution method is used to measure the magnetic moment of the instrument being measured, the magnetometer is used as a zero-detection magnetometer to measure the magnetic fields generated by the current-carrying magnetic moment coil and the instrument being measured. When the magnetic fields generated by the two are equal, the output of the zero-detection magnetometer is zero. When the magnetic field calculation method is used to measure the magnetic moment of the instrument being measured, the magnetometer measures the magnetic field generated by the instrument being measured and calculates the magnetic moment according to existing formulas. The magnetic moment testing system is also equipped with a standard current-carrying magnetic moment coil. The magnetic moment value of the current-carrying magnetic moment coil is constant and can be used to detect whether the measurement methods and distance measurements of the flux method and the magnetic field calculation method are accurate.

[0025] It should be noted that test platform 1 is used to support the instruments of the entire test platform, and the slide rail is used to ensure that the two motion platforms slide freely on the test platform; a non-magnetic ultrasonic motor is installed on the two-dimensional motion platform 2, which can drive the two-dimensional motion platform 2 to move back and forth; since there are size differences between different measured magnetic moment gauges, the three-dimensional motion platform 3 can perform three-dimensional motion to ensure that the measured magnetic moment gauge and the measuring instrument are on the same axis. The measured magnetic moment gauge is a magnet, electromagnet, or current-carrying magnetic field coil, etc.; among them, for gauges such as magnets and electromagnets, since there is a residual magnetic moment in the non-working state, after the measurement is completed, it is moved away from other testing equipment (such as magnetic magnets) by the three-dimensional motion platform 3. The test platform consists of a magnetometer, a flux induction coil, a fluxmeter, and a current-carrying magnetic moment coil, among other components. The magnetic axis is rotated 90° to bring the magnetic field on the test platform axis close to zero. The magnetometer 4 measures the magnetic moment generated by the magnetic moment gauge, primarily used in the substitution method and magnetic field calculation method. The flux induction coil 5 and the fluxmeter 6 measure the change in magnetic flux generated during the movement of the magnetic moment, primarily used in the flux method to measure the magnetic moment value. The current-carrying magnetic moment gauge 7 serves as a standard magnetic moment gauge. In the substitution method, it can be used as a standard magnetic moment gauge to compare the magnetic field generated by the gauge being measured, thus achieving the magnetic moment test. It can also be used as a standard magnetic moment gauge to verify the accuracy and reliability of the magnetic moment measurement in the flux method and magnetic field calculation method systems. A magnetic moment gauge parking area is located at the end of the flux induction coil for temporary storage of the gauge being measured, reducing its impact on the test.

[0026] The testing method for the magnetic moment testing system is described below.

[0027] Step 1: Magnetometer 4, flux reaction coil 5, and current-carrying coil magnetic moments 7 are on the same axis. The current electromagnetic moment, which is used as the measuring instrument for the magnetic moment, is aligned with the other three components on the same axis by the three-dimensional motion platform 3 according to the corresponding dimensions, in preparation for measurement.

[0028] Step 2: The magnetometer 4 and the current-carrying magnetic moment coil 7 are combined to test the magnetic moment gauge using the substitution method. During the substitution method, the distance between the magnetic moment gauge and the magnetometer is three times its size, reducing the measurement error caused by the size of the magnetic moment gauge. When measuring the magnetic field, the magnetic moment gauge is moved from a distance to the measurement position. For the current-carrying magnetic moment coil, it is moved from an unenergized state to an energized state. For the electromagnet, it is moved from a distance of 6 times its size, from a direction perpendicular to the axis of the test platform to a direction parallel to the axis, and then moved to a position of 3 times its size. The electromagnet is then energized. In the substitution method, the two magnetic moment gauges are in the same position, and the larger size of the two is used as the standard.

[0029] Step 3: Magnetometer 4 can be used to measure the magnetic moment of the instrument being measured using a calculation method. The measurement position is the same as in Step 3.

[0030] Step 4: The magnetic flux induction coil 5 and the magnetometer 6 can be used to test the magnetic moment gauge under test using the magnetic flux method. The magnetic moment gauge under test moves rapidly from the center of the magnetic flux reaction coil to a distance.

[0031] Step 5: The two-dimensional motion platform 2 and the three-dimensional motion platform 3 use non-magnetic ultrasonic motors for automatic position movement and adjustment. After the adjustment is completed, the motors are turned off to reduce interference from the current magnetic field.

[0032] The current-carrying magnetic moment gauge 7 can perform self-testing on the magnetic moment testing system, and check whether the magnetic moment measurement by the flux method and magnetic field calculation method is accurate and reliable.

[0033] Therefore, the magnetic moment testing system of the present invention can use the substitution method, magnetic field calculation method, and magnetic flux method to test the magnetic moment of the magnetic moment gauge. Different methods can be selected according to different gauges, and a current-carrying magnetic moment coil can be used to verify the magnetic moment of the gauge being tested as needed. At the same time, the magnetic moment testing system designed in this invention can set the magnetic moment gauge, and is especially suitable for testing the magnetic moment of large-value magnetic moment gauges with large weight.

[0034] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A magnetic moment testing system, characterized in that, Includes a test platform and two-dimensional motion platform, three-dimensional motion platform, magnetometer, magnetic flux induction coil, and current-carrying magnetic moment coil installed on the test platform; The two-dimensional motion platform and the three-dimensional motion platform are installed in the slide rail of the test platform and can slide freely on the slide rail; the two-dimensional motion platform is used to carry the current-carrying magnetic moment coil; the three-dimensional motion platform is used to carry the magnetic moment measuring instrument to be measured; the magnetic flux induction coil is connected to the magnetometer and installed at the left end of the test platform, and the magnetometer is installed at the right end of the test platform. When measuring the magnetic moment of a measuring instrument using the flux method, a flux induction coil and a magnetometer are used to measure the change in magnetic flux generated when the instrument moves. When measuring the magnetic moment of a measuring instrument using the substitution method and the magnetic field calculation method, a magnetometer is used to measure the magnetic field generated by the instrument. Simultaneously, in the substitution method, a current-carrying magnetic moment coil is used as a standard magnetic moment measuring instrument to compare the magnetic field generated by the instrument with that of the instrument being measured, thus achieving the testing of the magnetic moment. In the flux method and the magnetic field calculation method, the accuracy and reliability of the testing method are verified by using the current-carrying magnetic moment coil as a standard magnetic moment measuring instrument. When testing the value of magnetic moment, the magnetic flux induction coil, the magnetic moment measuring instrument, the current-carrying magnetic moment coil, and the magnetometer are on the same axis. The test platform is further divided into a test area and a parking area. The two-dimensional motion platform, the three-dimensional motion platform, the magnetometer, the magnetic flux induction coil, the magnetometer and the current-carrying magnetic moment coil are arranged in the test area. The magnetic moment gauge to be measured is placed in the parking area when not in the test state. Each test method makes full use of the platform without interfering with each other. After the magnetic moment gauge is tested, it is moved away from the magnetometer, magnetic flux induction coil, magnetometer, and current-carrying magnetic moment coil by a three-dimensional motion platform, and the magnetic axis is rotated 90° to improve the accuracy of magnetic moment testing.

2. The magnetic moment testing system as described in claim 1, characterized in that, Both the two-dimensional motion platform and the three-dimensional motion platform are equipped with non-magnetic ultrasonic motors, which are used to drive the two-dimensional motion platform and the three-dimensional motion platform to move back and forth on the slide rail.

3. The magnetic moment testing system as described in claim 1, characterized in that, The instrument used to measure the magnetic moment is a magnet, electromagnet, or current-carrying magnetic field coil.

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