CN112393705A - Magnetic bearing displacement sensor testing arrangement - Google Patents
Magnetic bearing displacement sensor testing arrangement Download PDFInfo
- Publication number
- CN112393705A CN112393705A CN202011454775.8A CN202011454775A CN112393705A CN 112393705 A CN112393705 A CN 112393705A CN 202011454775 A CN202011454775 A CN 202011454775A CN 112393705 A CN112393705 A CN 112393705A
- Authority
- CN
- China
- Prior art keywords
- displacement sensor
- steel ring
- magnetic bearing
- detection unit
- test platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
Abstract
The invention relates to the technical field of magnetic bearings, in particular to a magnetic bearing displacement sensor testing device, which comprises: test platform, steel ring, displacement detection unit, regulating part and controller. The middle of the test platform is provided with a hollow circular area; the steel ring sets up at the regional inboard of hollow circular, is provided with the clearance between the outer wall of steel ring and the test platform. A plurality of mounting holes are uniformly formed in the test platform; each mounting hole is provided with a displacement detection unit, and a gap is formed between the inner end of the displacement detection unit and the outer wall of the steel ring; each displacement detection unit is electrically connected with the controller respectively. A plurality of adjusting holes are uniformly formed in the test platform, an adjusting piece is installed in each adjusting hole, and the inner end of each adjusting piece is arranged opposite to the steel ring. The testing device for the displacement sensor of the magnetic bearing provided by the invention can realize the rapid test of the displacement sensor of the magnetic bearing.
Description
Technical Field
The invention relates to the technical field of magnetic bearings, in particular to a testing device for a displacement sensor of a magnetic bearing.
Background
The magnetic suspension bearing is called magnetic bearing for short, and is characterized by that it utilizes the magnetic action to suspend the rotor in the air, so that there is no mechanical contact between rotor and stator. The magnetic suspension bearing mainly comprises a rotor, an electromagnet, a displacement sensor, a controller, a power amplifier and the like. The control principle is that the rotor deviates from the reference position when the rotor is disturbed downwards at the reference position, and the displacement sensor detects the displacement of the rotor from the reference point, and the microprocessor serving as the controller converts the detected displacement into a control signal. The power amplifier then converts this control signal into a control current that creates a magnetic force in the actuator magnet, thereby driving the rotor back to the original equilibrium position. Therefore, the rotor can be always in a stable equilibrium state whether the rotor is disturbed downward or upward. The suspension of the magnetic suspension bearing shaft is a dynamic balance process, and the position of the rotating shaft is subjected to dynamic balance processes of deviation, displacement detection, judgment and control, electromagnetic force change and shaft resetting. The change of the position of the rotating shaft needs to be detected in real time, and the electromagnetic force is controlled in real time to reset the shaft. The displacement sensor is an indispensable part of a magnetic suspension bearing system, and the control precision of the magnetic suspension bearing has an inseparable relation with the displacement measurement precision of the shaft. In order to improve the bearing capacity and performance of the magnetic suspension bearing, the gap between the bearing support and the rotating shaft needs to be reduced as much as possible, and the gap is generally about tens of microns. Therefore, the test of the displacement sensor has very important significance for ensuring the magnetic bearing control system. The prior art lacks a testing tool for a displacement sensor.
Disclosure of Invention
The invention provides a magnetic bearing displacement sensor testing device aiming at the technical problem that the working state of a displacement sensor in a magnetic bearing is difficult to test in the prior art.
The technical scheme for solving the technical problems is as follows:
a magnetic bearing displacement sensor testing device, comprising: the device comprises a test platform, a steel ring, a displacement detection unit, a regulating piece and a controller;
the middle of the test platform is provided with a hollow circular area; the steel ring is of a circular ring structure, the steel ring is arranged inside the hollow circular area, and a gap is formed between the outer wall of the steel ring and the test platform;
a plurality of mounting holes are uniformly formed in the test platform, one ends of the mounting holes are communicated with the outside, and the other ends of the mounting holes are communicated with the hollow circular area; each mounting hole is provided with one displacement detection unit, and a gap is formed between the inner end of each displacement detection unit and the outer wall of the steel ring; each displacement detection unit is electrically connected with the controller respectively;
a plurality of adjusting holes are uniformly formed in the test platform, one end of each adjusting hole is communicated with the outside, and the other end of each adjusting hole is communicated with the hollow circular area; and each adjusting hole is provided with one adjusting piece, and the inner end of each adjusting piece is opposite to the steel ring.
Further, the displacement detecting unit includes: the displacement sensor is arranged on the probe; the probe is connected to the inner end of the displacement sensor, and the pre-positioning device is connected to the outer end of the displacement sensor; the displacement sensor and the probe are fixed in the mounting hole; the front-end device is electrically connected with the controller.
Furthermore, the adjusting hole is a screw hole, and the adjusting piece is an adjusting bolt matched with the screw hole.
Further, the width of a gap between the outer wall of the steel ring and the test platform is 10-100 micrometers.
Further, the width of a gap between the inner end of the displacement detection unit and the outer wall of the steel ring is 10-100 micrometers.
Furthermore, the number of the mounting holes and the number of the displacement detection units are four.
Furthermore, the adjusting holes and the adjusting pieces are all provided with four.
The testing device for the displacement sensor of the magnetic bearing provided by the invention at least has the following beneficial effects or advantages:
the invention provides a testing device for a magnetic bearing displacement sensor, wherein the middle of a testing platform is provided with a hollow circular area; the steel ring is of a circular ring structure, the steel ring is arranged on the inner side of the hollow circular area, and a gap is formed between the outer wall of the steel ring and the test platform. A plurality of mounting holes are uniformly formed in the test platform, one ends of the mounting holes are communicated with the outside, and the other ends of the mounting holes are communicated with the hollow circular area; each mounting hole is provided with a displacement detection unit, and a gap is formed between the inner end of the displacement detection unit and the outer wall of the steel ring; each displacement detection unit is electrically connected with the controller respectively. A plurality of adjusting holes are uniformly formed in the test platform, one end of each adjusting hole is communicated with the outside, and the other end of each adjusting hole is communicated with the hollow circular area; each adjusting hole is provided with an adjusting piece, and the inner end of each adjusting piece is arranged opposite to the steel ring. The testing device for the magnetic bearing displacement sensor provided by the invention can be used for pushing the steel ring to move by randomly adjusting the adjusting piece during testing, simulating the displacement of the magnetic bearing rotating shaft in each direction, precisely fine-tuning the distance between the displacement detection unit and the steel ring, converting the distance into a voltage signal and then controlling and calculating the voltage signal to the controller, and realizing the rapid testing of the magnetic bearing displacement sensor.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic bearing displacement sensor testing device according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the method comprises the following steps of 1-testing a platform, 2-displacement sensors, 3-adjusting parts, 4-steel rings, 5-controllers, 6-probes and 7-prepositioners.
Detailed Description
The invention provides a magnetic bearing displacement sensor testing device aiming at the technical problem that the working state of a displacement sensor in a magnetic bearing is difficult to test in the prior art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a magnetic bearing displacement sensor testing device, which is shown in figure 1 and mainly comprises: test platform 1, steel ring 4, displacement detection unit, regulating part 3 and controller 5. The middle of the test platform 1 is provided with a hollow circular area; the steel ring 4 is a circular ring structure, the steel ring 4 is disposed inside the hollow circular region, and a gap is disposed between the outer wall of the steel ring 4 and the testing platform 1, in this embodiment, the width of the gap between the outer wall of the steel ring 4 and the testing platform 1 is 10-100 micrometers (e.g., 10 micrometers, 50 micrometers, or 100 micrometers).
A plurality of mounting holes are uniformly formed in the test platform 1, one ends of the mounting holes are communicated with the outside, and the other ends of the mounting holes are communicated with the hollow circular area; each mounting hole is provided with a displacement detection unit, a gap is arranged between the inner end of the displacement detection unit and the outer wall of the steel ring 4, and in the embodiment, four mounting holes and four displacement detection units are arranged; the width of the gap between the inner end of the displacement detection unit and the outer wall of the steel ring 4 is 10-100 micrometers (for example, 10 micrometers, 50 micrometers or 100 micrometers). Each displacement detection unit is electrically connected with the controller 5.
A plurality of adjusting holes are uniformly formed in the test platform 1, one end of each adjusting hole is communicated with the outside, and the other end of each adjusting hole is communicated with the hollow circular area; each adjusting hole is provided with an adjusting piece 3, and the inner end of each adjusting piece 3 is arranged opposite to the steel ring 4; in the embodiment, four adjusting holes and four adjusting pieces 3 are arranged, and the adjusting holes and the mounting holes are alternately and uniformly arranged; and the adjusting hole is a screw hole, and the adjusting piece 3 is an adjusting bolt matched with the screw hole.
In a preferred embodiment of the present invention, the displacement detecting unit includes: a probe 6, a displacement sensor 2 and a front-end device 7. The probe 6 is connected with the inner end of the displacement sensor 2, and the front-end device 7 is connected with the outer end of the displacement sensor 2; the displacement sensor 2 and the probe 6 are fixed in the mounting hole; the front-end device 7 is electrically connected with the controller 5.
The embodiment of the invention provides a magnetic bearing displacement sensor testing device, which comprises the following working processes: during testing, the adjusting bolt is adjusted randomly to push the steel ring 4 to move, so that the displacement of the magnetic bearing rotating shaft in all directions can be simulated, the distance between the displacement sensor 2 and the steel ring 4 is finely adjusted, the distance is converted into a voltage signal to be sent to the controller 5 to be controlled and calculated, and a current control signal is simulated.
The magnetic bearing displacement sensor testing device provided by the embodiment of the invention at least has the following beneficial effects or advantages:
in the testing device for the displacement sensor of the magnetic bearing provided by the embodiment of the invention, the middle of a testing platform is provided with a hollow circular area; the steel ring is of a circular ring structure, the steel ring is arranged on the inner side of the hollow circular area, and a gap is formed between the outer wall of the steel ring and the test platform. A plurality of mounting holes are uniformly formed in the test platform, one ends of the mounting holes are communicated with the outside, and the other ends of the mounting holes are communicated with the hollow circular area; each mounting hole is provided with a displacement detection unit, and a gap is formed between the inner end of the displacement detection unit and the outer wall of the steel ring; each displacement detection unit is electrically connected with the controller respectively. A plurality of adjusting holes are uniformly formed in the test platform, one end of each adjusting hole is communicated with the outside, and the other end of each adjusting hole is communicated with the hollow circular area; each adjusting hole is provided with an adjusting piece, and the inner end of each adjusting piece is arranged opposite to the steel ring. The testing device for the magnetic bearing displacement sensor provided by the embodiment of the invention can simulate the displacement of the magnetic bearing in each direction of the rotating shaft, and can realize the rapid test of the magnetic bearing displacement sensor by precisely fine-tuning the distance between the displacement detection unit and the steel ring and then converting the distance into a voltage signal to be controlled and calculated by the controller.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A magnetic bearing displacement sensor testing device, comprising: the device comprises a test platform, a steel ring, a displacement detection unit, a regulating piece and a controller;
the middle of the test platform is provided with a hollow circular area; the steel ring is of a circular ring structure, the steel ring is arranged inside the hollow circular area, and a gap is formed between the outer wall of the steel ring and the test platform;
a plurality of mounting holes are uniformly formed in the test platform, one ends of the mounting holes are communicated with the outside, and the other ends of the mounting holes are communicated with the hollow circular area; each mounting hole is provided with one displacement detection unit, and a gap is formed between the inner end of each displacement detection unit and the outer wall of the steel ring; each displacement detection unit is electrically connected with the controller respectively;
a plurality of adjusting holes are uniformly formed in the test platform, one end of each adjusting hole is communicated with the outside, and the other end of each adjusting hole is communicated with the hollow circular area; and each adjusting hole is provided with one adjusting piece, and the inner end of each adjusting piece is opposite to the steel ring.
2. The magnetic bearing displacement sensor testing device of claim 1, wherein the displacement detection unit comprises: the displacement sensor is arranged on the probe; the probe is connected to the inner end of the displacement sensor, and the pre-positioning device is connected to the outer end of the displacement sensor; the displacement sensor and the probe are fixed in the mounting hole; the front-end device is electrically connected with the controller.
3. The magnetic bearing displacement sensor testing device of claim 1, wherein the adjustment holes are threaded holes and the adjustment members are adjustment bolts that mate with the threaded holes.
4. The magnetic bearing displacement sensor testing device of claim 1, wherein a gap width between an outer wall of the steel ring and the test platform is 10-100 microns.
5. The magnetic bearing displacement sensor testing device of claim 1, wherein a gap width between an inner end of the displacement detection unit and an outer wall of the steel ring is 10-100 microns.
6. The magnetic bearing displacement sensor testing device of any one of claims 1 to 5, wherein four mounting holes and four displacement detection units are provided.
7. The magnetic bearing displacement sensor testing device of any one of claims 1 to 5, wherein four adjustment holes and four adjustment pieces are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011454775.8A CN112393705A (en) | 2020-12-09 | 2020-12-09 | Magnetic bearing displacement sensor testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011454775.8A CN112393705A (en) | 2020-12-09 | 2020-12-09 | Magnetic bearing displacement sensor testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112393705A true CN112393705A (en) | 2021-02-23 |
Family
ID=74625213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011454775.8A Pending CN112393705A (en) | 2020-12-09 | 2020-12-09 | Magnetic bearing displacement sensor testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112393705A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09210610A (en) * | 1996-01-30 | 1997-08-12 | Noble Sangyo Kk | High-frequency excitation differential transformer for preventing influence of external magnetism and metal, etc. |
| JP2006207761A (en) * | 2005-01-31 | 2006-08-10 | Jtekt Corp | Displacement detecting device for magnetic bearing device |
| CN103213033A (en) * | 2013-04-25 | 2013-07-24 | 杭州汽轮机股份有限公司 | In-place measuring device and measuring method for separated electricity jumpiness of main shaft rotation error |
| CN104006969A (en) * | 2014-06-13 | 2014-08-27 | 江南阀门有限公司 | Online automatic-detection sliding bearing fault early-warning system and expansion amount measurement method |
| CN204902750U (en) * | 2015-05-27 | 2015-12-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Axle position detecting device and magnetic suspension motor |
| CN111023957A (en) * | 2019-12-20 | 2020-04-17 | 北京航空航天大学 | High-temperature-resistant radial displacement sensor device |
-
2020
- 2020-12-09 CN CN202011454775.8A patent/CN112393705A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09210610A (en) * | 1996-01-30 | 1997-08-12 | Noble Sangyo Kk | High-frequency excitation differential transformer for preventing influence of external magnetism and metal, etc. |
| JP2006207761A (en) * | 2005-01-31 | 2006-08-10 | Jtekt Corp | Displacement detecting device for magnetic bearing device |
| CN103213033A (en) * | 2013-04-25 | 2013-07-24 | 杭州汽轮机股份有限公司 | In-place measuring device and measuring method for separated electricity jumpiness of main shaft rotation error |
| CN104006969A (en) * | 2014-06-13 | 2014-08-27 | 江南阀门有限公司 | Online automatic-detection sliding bearing fault early-warning system and expansion amount measurement method |
| CN204902750U (en) * | 2015-05-27 | 2015-12-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Axle position detecting device and magnetic suspension motor |
| CN111023957A (en) * | 2019-12-20 | 2020-04-17 | 北京航空航天大学 | High-temperature-resistant radial displacement sensor device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102072790B (en) | Device for measuring micro impulse | |
| CN102331349B (en) | Permanent magnetic bearing rigidity measuring device | |
| CN116182765B (en) | Self-calibration control method and device of displacement sensor based on magnetic suspension bearing | |
| CN110567660B (en) | Unbalance excitation test bed for elastic support rotor system and method for measuring rigidity of elastic ring of unbalance excitation test bed | |
| CN103064038B (en) | Unidirection mixing magnetic levitation testing device | |
| CN102768101B (en) | Vibration testing device for hydropower unit in hydropower station and vibration attenuation implementing method of vibration testing device | |
| CN110864077B (en) | Motor-driven automatic balancing system with autonomous regulation and control capability | |
| CN108612752B (en) | Electromagnetic suspension hub-bearing unit | |
| CN110925307B (en) | Auxiliary bearing system suitable for magnetic suspension bearing-rotor system | |
| CN105545955A (en) | Magnetic bearing based on force feedback control | |
| CN112393705A (en) | Magnetic bearing displacement sensor testing arrangement | |
| CN218997873U (en) | Permanent magnet type brake with failure monitoring function | |
| CN117404389A (en) | Magnetic suspension radial bearing magnetic force parameter online identification method | |
| CN106950062B (en) | Test experiment table for anti-drop performance of magnetic suspension bearing | |
| CN104806646A (en) | Rolling bearing supporting device capable of automatically controlling vibration and pretightening force | |
| CN210799741U (en) | Self-aligning magnetic suspension bearing system and generator | |
| CN111197969B (en) | Magnetic suspension bearing rotor position detection device | |
| CN111641367A (en) | Magnetic suspension bearing control system based on motor running state and control method thereof | |
| CN103968982A (en) | Low damping rolling moment measuring device based on gas bearing | |
| Week et al. | Linear magnetic bearing and levitation system for machine tools | |
| CN113833755A (en) | Magnetic suspension bearing | |
| CN112100847B (en) | Magnetic suspension bearing for switched reluctance motor | |
| CN116499662A (en) | Axial electromagnetic bearing rigidity testing device | |
| CN115573997B (en) | Controllable permanent magnet suspension bearing | |
| CN219348007U (en) | Bearing temperature sensor for monitoring running state of fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210223 |
|
| RJ01 | Rejection of invention patent application after publication |