CN208606734U - The magnetic suspension bearing radial displacement transducer component controlled using triplex redundance - Google Patents
The magnetic suspension bearing radial displacement transducer component controlled using triplex redundance Download PDFInfo
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- CN208606734U CN208606734U CN201821253086.9U CN201821253086U CN208606734U CN 208606734 U CN208606734 U CN 208606734U CN 201821253086 U CN201821253086 U CN 201821253086U CN 208606734 U CN208606734 U CN 208606734U
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- displacement
- triplex redundance
- sensor
- mounting hole
- magnetic suspension
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Abstract
The utility model discloses a kind of magnetic suspension bearing radial displacement transducer components controlled using triplex redundance, 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 utility model can significantly reduce the failure rate of displacement sensor component, at low cost.
Description
Technical field:
The utility model relates to a kind of magnetic suspension bearing radial displacement transducer components controlled using triplex redundance.
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.
Utility model content:
The utility model is to provide a kind of to control using triplex redundance to solve the above-mentioned problems of the prior art
Magnetic suspension bearing radial displacement transducer component.
Technical solution used by the utility model has: a kind of magnetic suspension bearing radial displacement biography using triplex redundance control
Sensor component, including ring support and displacement sensor are provided with four groups of mounting hole units in the circumferential wall of the ring support, often
Group mounting hole unit includes three radial circular holes being set side by side, and displacement sensor is inserted into radial circular hole, and each displacement passes
The monitoring end face of sensor and the inner ring surface of ring support are 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.
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
It is rapid:
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 utility model has the following beneficial effects:
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.Can be learnt according to probability: 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 the utility model structure chart.
Fig. 2 is the control principle drawing structure chart of the utility model.
Specific embodiment:
The utility model will be further described below with reference to the accompanying drawings.
Such as Fig. 1 and Fig. 2, a kind of magnetic suspension bearing radial displacement transducer group controlled using triplex redundance of the utility model
Part, including ring support 1 and displacement sensor are provided with four groups of mounting hole units, every group of mounting hole in the circumferential wall of ring support 1
Unit includes three radial circular holes 11 being set side by side, and the high settings such as radial circular hole 11 of three 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 utility model is controlled using triplex redundance, including
Following steps:
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 the preferred embodiment of the utility model, it is noted that for the common skill of the art
It for art personnel, can also make several improvements without departing from the principle of this utility model, these improvement also should be regarded as
The protection scope of the utility model.
Claims (2)
1. a kind of magnetic suspension bearing radial displacement transducer component controlled using triplex redundance, it is characterised in that: 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821253086.9U CN208606734U (en) | 2018-08-06 | 2018-08-06 | The magnetic suspension bearing radial displacement transducer component controlled using triplex redundance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821253086.9U CN208606734U (en) | 2018-08-06 | 2018-08-06 | The magnetic suspension bearing radial displacement transducer component controlled using triplex redundance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208606734U true CN208606734U (en) | 2019-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821253086.9U Active CN208606734U (en) | 2018-08-06 | 2018-08-06 | The magnetic suspension bearing radial displacement transducer component controlled using triplex redundance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 CN201821253086.9U patent/CN208606734U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: No. 99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co., Ltd Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU LIMITED Corp. |