CN108827207A - Using the magnetic suspension bearing radial displacement transducer component and its control method of triplex redundance control - Google Patents
Using the magnetic suspension bearing radial displacement transducer component and its control method of triplex redundance control Download PDFInfo
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- CN108827207A CN108827207A CN201810882759.5A CN201810882759A CN108827207A CN 108827207 A CN108827207 A CN 108827207A CN 201810882759 A CN201810882759 A CN 201810882759A CN 108827207 A CN108827207 A CN 108827207A
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- Prior art keywords
- displacement
- triplex redundance
- sensor
- sensor unit
- magnetic suspension
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
- G01D1/02—Measuring arrangements giving results other than momentary value of variable, of general application giving mean values, e.g. root means square values
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- General Physics & Mathematics (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of magnetic suspension bearing radial displacement transducer components and its control method using triplex redundance control, four groups of mounting hole units are provided in the circumferential wall of ring support, every group of mounting hole unit includes three radial circular holes being set side by side, displacement sensor is inserted into radial circular hole, and the monitoring end face of each displacement sensor and the inner ring surface of ring support are tangent；Three displacement sensors in every group of mounting hole unit form a triplex redundance sensor unit, and a triplex redundance sensor unit provides a displacement detecting value.The present invention can significantly reduce the failure rate of displacement sensor component, at low cost.
Description
Technical field：
The present invention relates to a kind of magnetic suspension bearing radial displacement transducer components and its controlling party using triplex redundance control
Method.
Background technique：
Displacement sensor is one of core component of magnetic bearings control, reliability directly affect magnetic bearing reliability and
Service life.
Since magnetic bearing needs to control 5 freedom degrees (other than along axis rotation) and magnetic bearings control essence of rotor
The needs of degree, so every magnetic suspension motor at least needs to be arranged 10 displacement sensors (each freedom degree is a pair of).If its
In have sensor outlet failure, will lead to rotor where it freedom degree direction it is out of control.
It can be learnt according to reliability principle：Even if failure rate of the displacement sensor within the entire life of product phase is only
1%, then the reliability of a magnetic suspension motor be (1-1%) ^10 ≈ 90%, i.e., at this time the failure rate of motor up to 10%.Together
When since displacement sensor is the core component of magnetic bearing, installation site is again inside the motor of depths, once so failure must be returned
Factory's maintenance.Not only maintenance cost is high, and the influence to corporate image is also extremely bad, so the failure rate of this ratio is unacceptable
's.
It, can but although displacement sensor itself is the small part of volume very little, high-volume manufacture low in cost, easy
Be improve its reliability it is but very difficult.In magnetic suspension motor 10 years or more service life, the failure rate of single sensor
It is difficult to be reduced to 1% or less.This has been an industry problems in magnetic suspension field.
Summary of the invention：
The present invention is to provide a kind of magnetcisuspension controlled using triplex redundance to solve the above-mentioned problems of the prior art
Floating axle holds radial displacement transducer component and its control method.
The technical solution adopted in the present invention has：A kind of magnetic suspension bearing radial displacement transducer controlled using triplex redundance
Component, including ring support and displacement sensor are provided with four groups of mounting hole units, every group of peace in the circumferential wall of the ring support
Dress hole unit includes three radial circular holes being set side by side, and displacement sensor is inserted into radial circular hole, and each displacement sensor
Monitoring end face and ring support inner ring surface it is tangent；Three displacement sensors in every group of mounting hole unit form one more than three
Sensor unit is spent, a triplex redundance sensor unit provides a displacement detecting value.
Further, the high settings such as radial circular hole of three in every group of mounting hole unit.
A kind of control method of the magnetic suspension bearing radial displacement transducer component using triplex redundance control, including walk as follows
Suddenly：
1) three displacement sensors in each triplex redundance sensor unit export a displacement detecting value L, and this three
Three displacement sensors in redundancy sensor unit seek difference in pairs, and by difference and the allowable error value S of setting into
Row comparison；
If 2) output valve of a displacement sensor in triplex redundance sensor unit and another two displacement sensor
Difference is all larger than allowable error S, then judges that this displacement sensor is in " failure " state, and corresponded to output valve from circuit
Middle disconnection；
3) it after removing the output valve disconnected in each triplex redundance sensor unit, finds out in the triplex redundance sensor unit and remains
The average value of remaining displacement sensor reading can be used as the output valve output of the triplex redundance sensor unit.
The present invention has the advantages that：
1) failure rate of displacement sensor component can be significantly reduced：
Due to there is the principle of " the minority is subordinate to the majority " in triplex redundance sensor unit, only when two displacement sensors of appearance
Simultaneous faults or three displacement sensors all failure when, the data of this group of displacement sensor output just can be extremely.Therefore triplex redundance
Sensor module can be readily apparent that reduce the failure rate of magnetic suspension motor.
It is original single with the replacement of ternary sensor such as after being controlled in certain type magnetic suspension motor using triplex redundance
Sensor.It can be learnt according to probability：The all normal probability of three sensors is 97.0299%；The probability of only one failure
It is 2.9403%；It is just 0.0297% there are two the probability of failure；The probability of three all failures is 0.0001%.
Therefore use the displacement sensor single group failure rate of triplex redundance control technology for 0.0298%, machine failure rate is
0.3%.
As a comparison：The failure rate of displacement sensor is 1% in prototype magnetic suspension motor, and machine failure rate is 9.56%.
It is obvious that the machine failure rate of triplex redundance displacement sensor is only the 3.1% of prototype, 31.8 times are reduced.
2) at low cost：
All displacement sensors replace with triplex redundance sensor unit in one magnetic suspension blower, will increase 20 sensings
Device, increased sensor total price is less than 100 yuan, and the increased costs of control system are also and few.
Detailed description of the invention：
Fig. 1 is structure of the invention figure.
Fig. 2 is control principle drawing structure chart of the invention.
Specific embodiment：
The present invention will be further described below with reference to the drawings.
Such as Fig. 1 and Fig. 2, a kind of magnetic suspension bearing radial displacement transducer component controlled using triplex redundance of the present invention, packet
Ring support 1 and displacement sensor are included, four groups of mounting hole units, every group of mounting hole unit are provided in the circumferential wall of ring support 1
The radial circular hole 11 being set side by side including three, and the high settings such as three radial circular holes 11 in every group of mounting hole unit.
Displacement sensor is inserted into radial circular hole 11, and the monitoring end face of each displacement sensor and ring support 1 is interior
Anchor ring is tangent；Three displacement sensors in every group of mounting hole unit form a triplex redundance sensor unit, a triplex redundance
Sensor unit provides a displacement detecting value.
The control method for the magnetic suspension bearing radial displacement transducer component that the present invention is controlled using triplex redundance, including it is as follows
Step：
1) three displacement sensors in each triplex redundance sensor unit export a displacement detecting value L, and this three
Three displacement sensors in redundancy sensor unit seek difference in pairs, and by difference and the allowable error value S of setting into
Row comparison；
If 2) output valve of a displacement sensor in triplex redundance sensor unit and another two displacement sensor
Difference is all larger than allowable error S, then judges that this displacement sensor is in " failure " state, magnetic bearing control system is corresponded to
Output valve is disconnected from the circuit；
3) it after removing the output valve disconnected in each triplex redundance sensor unit, finds out in the triplex redundance sensor unit and remains
The average value of remaining displacement sensor (3 or 2) readings can be used as the output valve output of the triplex redundance sensor unit.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention
Protection scope.
Claims (3)
1. a kind of magnetic suspension bearing radial displacement transducer component controlled using triplex redundance, it is characterised in that：It is propped up including annular
Frame (1) and displacement sensor are provided with four groups of mounting hole units, every group of mounting hole unit in the circumferential wall of the ring support (1)
The radial circular hole (11) being set side by side including three, displacement sensor is inserted into radial circular hole (11), and each displacement sensor
Monitoring end face and ring support (1) inner ring surface it is tangent；Three displacement sensors in every group of mounting hole unit form one
Triplex redundance sensor unit, a triplex redundance sensor unit provide a displacement detecting value.
2. as described in claim 1 using the magnetic suspension bearing radial displacement transducer component of triplex redundance control, feature exists
In：The high settings such as three radial circular holes (11) in every group of mounting hole unit.
3. a kind of control method of the magnetic suspension bearing radial displacement transducer component using triplex redundance control, it is characterised in that：
Include the following steps：
1) three displacement sensors in each triplex redundance sensor unit export a displacement detecting value L, and the triplex redundance
Three displacement sensors in sensor unit seek difference in pairs, and the allowable error value S of difference and setting is carried out pair
Than；
If 2) difference of the output valve of a displacement sensor in triplex redundance sensor unit and another two displacement sensor
It is all larger than allowable error S, then judges that this displacement sensor is in " failure " state, and corresponded to output valve from Circuit Interrupt
It opens；
3) after removing the output valve disconnected in each triplex redundance sensor unit, remaining bit in the triplex redundance sensor unit is found out
The average value of displacement sensor reading can be used as the output valve output of the triplex redundance sensor unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882759.5A CN108827207A (en) | 2018-08-06 | 2018-08-06 | Using the magnetic suspension bearing radial displacement transducer component and its control method of triplex redundance control |
| PCT/CN2019/101949 WO2020030193A1 (en) | 2018-08-06 | 2019-08-22 | Magnetic suspension bearing radial displacement sensor module controlled by triplex redundancy and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882759.5A CN108827207A (en) | 2018-08-06 | 2018-08-06 | Using the magnetic suspension bearing radial displacement transducer component and its control method of triplex redundance control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108827207A true CN108827207A (en) | 2018-11-16 |
Family
ID=64153594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810882759.5A Pending CN108827207A (en) | 2018-08-06 | 2018-08-06 | Using the magnetic suspension bearing radial displacement transducer component and its control method of triplex redundance control |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108827207A (en) |
| WO (1) | WO2020030193A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441958A (en) * | 2018-12-18 | 2019-03-08 | 南京磁谷科技有限公司 | A kind of combination sensor structure for magnetic suspension bearing |
| WO2020030193A1 (en) * | 2018-08-06 | 2020-02-13 | 南京磁谷科技有限公司 | Magnetic suspension bearing radial displacement sensor module controlled by triplex redundancy and control method thereof |
| CN111023957A (en) * | 2019-12-20 | 2020-04-17 | 北京航空航天大学 | High-temperature-resistant radial displacement sensor device |
| CN109681749B (en) * | 2018-12-19 | 2020-04-24 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Rotor position detection installation assembly and magnetic suspension bearing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729186B (en) * | 2020-12-21 | 2022-08-02 | 珠海格力电器股份有限公司 | Fault processing method, device and system for displacement sensor and processor |
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| DE4215381A1 (en) * | 1992-05-11 | 1993-11-18 | Siemens Ag | Radial and=or axial position measurement device for shaft and magnetic bearing - contains two sensor unit pairs for detecting displacement of shaft each coupled to subtractor for formation of difference signal, which is fed to switchable input summer to form average value. |
| JPH11166532A (en) * | 1997-12-02 | 1999-06-22 | Koyo Seiko Co Ltd | Magnetic bearing device |
| US6433536B1 (en) * | 1998-12-31 | 2002-08-13 | Pacsci Motion Control, Inc. | Apparatus for measuring the position of a movable member |
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| CN106705822A (en) * | 2016-11-29 | 2017-05-24 | 中国神华能源股份有限公司 | Turbine valve stroke measuring device, turbine valve stroke monitoring system and turbine valve stroke monitoring method |
| CN108827207A (en) * | 2018-08-06 | 2018-11-16 | 南京磁谷科技有限公司 | Using the magnetic suspension bearing radial displacement transducer component and its control method of triplex redundance control |
-
2018
- 2018-08-06 CN CN201810882759.5A patent/CN108827207A/en active Pending
-
2019
- 2019-08-22 WO PCT/CN2019/101949 patent/WO2020030193A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4215381A1 (en) * | 1992-05-11 | 1993-11-18 | Siemens Ag | Radial and=or axial position measurement device for shaft and magnetic bearing - contains two sensor unit pairs for detecting displacement of shaft each coupled to subtractor for formation of difference signal, which is fed to switchable input summer to form average value. |
| JPH11166532A (en) * | 1997-12-02 | 1999-06-22 | Koyo Seiko Co Ltd | Magnetic bearing device |
| US6433536B1 (en) * | 1998-12-31 | 2002-08-13 | Pacsci Motion Control, Inc. | Apparatus for measuring the position of a movable member |
| US20060055259A1 (en) * | 2004-09-14 | 2006-03-16 | Casey Hanlon | Fault-tolerant magnetic bearing position sensing and control system |
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| CN104697435A (en) * | 2013-12-10 | 2015-06-10 | 中国航空工业第六一八研究所 | Stator zeroing structure of multi-redundancy angular displacement sensor and adjusting method thereof |
| US20150219472A1 (en) * | 2014-02-06 | 2015-08-06 | Infineon Technologies Ag | Axial and perpendicular angle sensor in single package |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020030193A1 (en) * | 2018-08-06 | 2020-02-13 | 南京磁谷科技有限公司 | Magnetic suspension bearing radial displacement sensor module controlled by triplex redundancy and control method thereof |
| CN109441958A (en) * | 2018-12-18 | 2019-03-08 | 南京磁谷科技有限公司 | A kind of combination sensor structure for magnetic suspension bearing |
| CN109681749B (en) * | 2018-12-19 | 2020-04-24 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Rotor position detection installation assembly and magnetic suspension bearing |
| CN111023957A (en) * | 2019-12-20 | 2020-04-17 | 北京航空航天大学 | High-temperature-resistant radial displacement sensor device |
| CN111023957B (en) * | 2019-12-20 | 2021-05-28 | 北京航空航天大学 | High-temperature-resistant radial displacement sensor device |
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| Publication number | Publication date |
|---|---|
| WO2020030193A1 (en) | 2020-02-13 |
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