CN110030264A - Magnetic suspension bearing displacement detection device and magnetic suspension system - Google Patents
Magnetic suspension bearing displacement detection device and magnetic suspension system Download PDFInfo
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- CN110030264A CN110030264A CN201910381251.1A CN201910381251A CN110030264A CN 110030264 A CN110030264 A CN 110030264A CN 201910381251 A CN201910381251 A CN 201910381251A CN 110030264 A CN110030264 A CN 110030264A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 204
- 239000000725 suspension Substances 0.000 title claims abstract description 63
- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 38
- 238000004804 winding Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims 1
- 230000033001 locomotion Effects 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005339 levitation Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Abstract
This application involves a kind of magnetic suspension bearing displacement detection device and magnetic suspension systems.Magnetic suspension bearing displacement detection device includes displacement sensor, analog-digital converter and data processor, and displacement sensor, analog-digital converter and data processor are sequentially connected, and the bearing controller of data processor connection magnetic suspension system；Displacement sensor detects the displacement of magnetic suspension system axis and output displacement signal to analog-digital converter, analog-digital converter carries out analog-to-digital conversion to displacement signal and obtains digital signal and output to data processor, and digital signal is sent to bearing controller by data processor.Using the magnetic suspension bearing displacement detection device of the application, the operation stability of magnetic suspension system can be improved.
Description
Technical field
This application involves magnetic levitation technology fields, more particularly to a kind of magnetic suspension bearing displacement detection device and magnetic suspension
System.
Background technique
Suspension control for magnetic suspension system, generally requires and uses bearing controller, displacement sensor etc..Bearing control
Device is connected by conducting wire with displacement sensor and bearing winding, and the displacement of displacement sensor detection axis simultaneously sends displacement signal to axis
Hold controller, bearing controller is according to the electric current of displacement signal adjustment axis winding group, and electric current influences magnetic force, the magnetic of bearing winding
The movement of power control shaft avoids axis from touching with protection bearing so that bearing controller can indirectly control the displacement of axis, keep axle suspension floating
It hits.
In practical application, bearing controller generally can not be closely mounted near displacement sensor, and displacement sensor arrives
The signal transmission distance of bearing controller is longer, and displacement signal is easy to be interfered during being transmitted to bearing controller,
There is a problem of that the received displacement signal accuracy of bearing controller is low, so that the Bit andits control accuracy to axis is low, thus magnetic
The operation stability of suspension system is low.
Summary of the invention
Based on this, it is necessary to which, for the low problem of magnetic suspension system operation stability, providing one kind can be improved magnetic suspension
The magnetic suspension bearing displacement detection device and magnetic suspension system of system run all right.
A kind of magnetic suspension bearing displacement detection device, including displacement sensor, analog-digital converter and data processor, it is described
Displacement sensor, the analog-digital converter and the data processor are sequentially connected, and the data processor connects magnetic suspension
The bearing controller of system；
Institute's displacement sensors detect the displacement of the magnetic suspension system axis and output displacement signal to the modulus turns
Parallel operation, the analog-digital converter obtain digital signal to institute's displacement signal progress analog-to-digital conversion and export to the data processing
The digital signal is sent to the bearing controller by device, the data processor.
A kind of magnetic suspension system, including axis, protection bearing, bearing winding, bearing controller and above-mentioned magnetic suspension bearing
Displacement detection device, the axis are set to the hollow region of the protection bearing, and the bearing winding is set around the protection axis
Periphery is held, the bearing controller connects the data processor and the bearing winding.
Above-mentioned magnetic suspension bearing displacement detection device and magnetic suspension system are exported displacement sensor by analog-digital converter
Displacement signal be converted to digital signal and export and to data processor, by data processor digital signal is sent to bearing control
Device processed, other than the displacement signal transmitted between displacement sensor and analog-digital converter is analog signal, other parts transmission
It is digital signal；And bearing controller is compared, the circuit and device that analog-digital converter includes are relatively fewer, volume is smaller, can
Close to displacement sensor installation, the transmission range of shortening analog signal, reduces signal interference suffered in transmission process, improves
The anti-interference ability of signal transmission, so that the accuracy that bearing controller receives signal is higher, Bit andits control accuracy to axis
It is higher, so as to improve the operation stability of magnetic suspension system.
Detailed description of the invention
Fig. 1 is the structural block diagram of magnetic suspension bearing displacement detection device in one embodiment；
Fig. 2 is a kind of schematic diagram of situation of movement of axis；
Fig. 3 is the schematic diagram of another situation of movement of axis；
Fig. 4 is the schematic diagram of another situation of movement of axis；
Fig. 5 is the structural block diagram of magnetic suspension bearing displacement detection device in another embodiment；
Fig. 6 is the structural block diagram of magnetic suspension system in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
Displacement sensor detection displacement and the displacement signal exported are generally the analog signal of light current, and analog signal is anti-interference
Ability is low, is easy to be interfered in transmission process.Therefore, in traditional magnetic suspension system, displacement sensor is transmitted to bearing
The displacement signal accuracy of controller is low, magnetic suspension system operation stability is low.
To solve the problems, such as that magnetic suspension system operation stability is low, this application provides a kind of magnetic suspension bearing displacement detectings
Equipment.In one embodiment, with reference to Fig. 1, magnetic suspension bearing displacement detection device includes displacement sensor 110, analog-to-digital conversion
Device 130 and data processor 150, displacement sensor 110, analog-digital converter 130 and data processor 150 are sequentially connected, and number
The bearing controller 200 of magnetic suspension system is connected according to processor 150.The position of the detection magnetic suspension system axis of displacement sensor 110
It moves and output displacement signal is to analog-digital converter 130, analog-digital converter 130 carries out analog-to-digital conversion to displacement signal and obtains digital letter
Number and export to data processor 150, digital signal is sent to bearing controller 200 by data processor 150.
The displacement signal of the detection output of displacement sensor 110 is the analog signal for reflecting the displacement of axis；Analog-digital converter 130
Analog-to-digital conversion is carried out to displacement signal, digital signal can be converted analog signals into, by data processor 150 by digital signal
It is sent to bearing controller 200.Wherein, bearing controller 200 is the device of the suspension for control shaft；In magnetic suspension system
In, bearing controller 200 can connect bearing winding, and the electric current of bearing winding generates the shifting of magnetic force control protection bearing inner shaft
It is dynamic.It, can be according to the electric current of Digital Signals bearing winding, to control after bearing controller 200 receives digital signal
The displacement of axis avoids axis and protection bearing collision.
Above-mentioned magnetic suspension bearing displacement detection device, the displacement for being exported displacement sensor 110 by analog-digital converter 130
Signal, which is converted to digital signal and exports to data processor 150, by data processor 150, is sent to bearing control for digital signal
Device 200 processed, other than the displacement signal transmitted between displacement sensor 110 and analog-digital converter 130 is analog signal, other
Fractional transmission is digital signal；And bearing controller 200 is compared, the circuit and device that analog-digital converter 130 includes are relatively
Less, volume is smaller, and the reliable installation of peri position displacement sensor 110, the transmission range for shortening analog signal reduce signal in transmission process
In suffered interference, improve the anti-interference ability of signal transmission so that the accuracy of the received digital signal of bearing controller 200
It is higher, higher to the Bit andits control accuracy of axis, so as to improve the operation stability of magnetic suspension system.
In one embodiment, displacement sensor 110 include the first displacement sensor and second displacement sensor, first
Displacement sensor is set to the first position point of the protection bearing of axis, and second displacement sensor is set to the second position of protection bearing
Point；It is in the first line, second position point and protection bearing with the line where the central point of first position point and protection bearing
Line where heart point is the second line, and the first line is mutually perpendicular to the second line.Wherein, the central point of bearing is protected to refer to guarantor
The center point of the radial section of bearing is protected, radial section is the section vertical with the protection axis of bearing；Axle position is in protection
The hollow region of bearing, generally, the target levitation position of axis are that the axle center of axis is located at the central point of protection bearing.Specifically, with
Protection side of the bearing towards axis be inside, inside opposite side be outside, the first displacement sensor and second displacement sensor
The first position point and second position point on the outside of protection bearing can be set, specifically can be and be affixed on the outside of protection bearing.
First displacement sensor and second displacement sensor are all connected with analog-digital converter 130, the detection of the first displacement sensor
To analog-digital converter 130, second displacement sensor is examined for displacement and the first displacement signal of output of the axis on the direction of the first line
It surveys displacement of the axis on the direction of the second line and exports second displacement signal to analog-digital converter 130.That is, displacement signal packet
Include the first displacement signal and second displacement signal；Accordingly, analog-digital converter 130 is respectively to the first displacement signal and second displacement
Signal carries out analog-to-digital conversion, obtains the digital signal of the first displacement signal and the digital signal of second displacement signal.Due to first
Line is mutually perpendicular to the second line, then the displacement that the first displacement sensor and second displacement sensor detect respectively is axis two
Displacement in a mutually perpendicular direction.By using the first displacement sensor and second displacement sensor, detection axis exists respectively
Displacement in two mutually orthogonal directions, measurement are convenient.
In one embodiment, the first displacement sensor and second displacement sensor are eddy current displacement sensor.Electricity
Eddy displacement sensor energy is non-contact, measures to high resolution displacement, does not need to contact the displacement that can measure axis with measured body；
First displacement sensor and second displacement sensor are all made of eddy current displacement sensor, and the convenience of displacement measurement can be improved
And accuracy.
In one embodiment, data processor 150 judges whether that the corresponding protection axis of axis collision occurs according to digital signal
The collision failure held, if digital signal is sent to bearing controller 200 there is no colliding failure, if colliding event
Barrier then sends fault message to bearing controller 200 according to digital signal.
The collision failure of the corresponding protection bearing of axis collision is spindle and interior hollow region includes the protection bearing of this axis
The failure to collide.Wherein, fault message is the information for reminding the failure that collided.Pass through data processor 150
According to digital signal carry out accident analysis, there is no collision failure when send digital signal to bearing controller 200, sending out
Fault message is sent when raw collision failure to bearing controller 200, and accident analysis is distributed to data processor 150 and is executed, it can
To simplify the processing of bearing controller 200.
Specifically, data processor 150 can also be sent to bearing controller when colliding failure, by digital signal
200.That is, data processor 150 is sent to bearing controller 200 when colliding failure, by digital signal and fault message；
In this way, digital signal can be sent to by data processor 150 in the case where colliding failure and no collision failure
Bearing controller 200 is convenient for 200 further progress data processing of bearing controller.
Data processor 150 judges whether that the event of the collision failure of the corresponding protection bearing of axis collision occurs according to digital signal
Barrier analysis can there are many methods to realize.Digital signal can be displacement sensor 110 and measure axis relative to initial position
Distance, initial position can be the central point of protection bearing.It specifically, include aforementioned first displacement signal with before with displacement signal
For stating second displacement signal, data processor 150 can digital signal to the first displacement signal and second displacement signal
Digital signal carries out independent process:
Data processor 150 is displaced according to the digital signal of the first displacement signal and the first direction center being arranged, meter
It calculates axis distance of off center point on the direction of the first line and obtains the first offset distance, according to the number of second displacement signal
Signal and the second direction center being arranged displacement, calculate axis distance of off center point on the direction of the second line and obtain the
Two offset distances；Wherein, the displacement of first direction center is equal to the first displacement sensor is measured when axle center is located at central point the
The value of digital signal corresponding to one displacement signal, the displacement of second direction center are equal to second displacement sensor in axle center is located at
The value of digital signal corresponding to the second displacement signal measured when heart point.The displacement of first direction center and second direction centre bit
Shifting, which can be, is stored in advance setting.First offset distance is compared by data processor 150 with maximum allowable offset distance, will
Second offset distance is compared with maximum allowable offset distance；Wherein, maximum allowable offset distance can be equal to protection bearing
Internal diameter and axis radius difference.If the first offset distance is greater than or equal to maximum allowable offset distance, axis is in the first line
Direction on collide；If the second offset distance is greater than or equal to maximum allowable offset distance, in the direction of the second line
On collide.As shown in Figures 2 and 3, axis is only moved on the direction of the first line or axis is only in the side of the second line
The case where moving up can be accurately judged to the failure that whether collides using this failure analysis methods.However, for axis
All there is the case where displacement on the direction of first line and on the direction of the second line, in Fig. 4, is meeting guarantor when axis occurs
When protecting bearing, the displacement that the first displacement sensor and second displacement sensor detect all does not reach maximum allowable offset distance
From the failure that collided can not be determined using the method for independent process.
In one embodiment, a kind of fault analysis and handling method that accuracy is high is provided.150 basis of data processor
Digital signal obtains the linear distance of the central point of the axle center offset protection bearing of axis, and by linear distance and default peak excursion
Distance is compared, if linear distance is less than default peak excursion distance, is determined there is no colliding failure, if linear distance
More than or equal to default peak excursion distance, then the failure that collides is determined.
The target levitation position of axis is usually that the axle center of axis is located at the central point of protection bearing, that is, the axle center of axis and protection
The central point of bearing is overlapped.Wherein, the difference that peak excursion distance is equal to the internal diameter of protection bearing and the radius of axis is preset.Such as Fig. 4
In, S indicates linear distance.Linear distance can accurately reflect the mobile distance of axis；By the way that linear distance and default maximum is inclined
It moves distance to compare, if linear distance is less than default peak excursion distance, then it represents that axis and protect between bearing there is also gap, no
It can collide, determine that there is no colliding failure at this time；Otherwise, if linear distance is greater than or equal to default peak excursion distance,
It indicates to have collided between axis and protection bearing, determines the failure that collides at this time.
By obtaining the linear distance of the central point of the axle center offset protection bearing of axis according to digital signal, by linear distance
It is compared with default peak excursion distance, the failure that collides is judged whether according to comparison result, since linear distance can be with
The mobile distance of axis is accurately reflected, the case where for Fig. 2, Fig. 3 and Fig. 4, can accurately analyze the failure that whether collides,
Accident analysis accuracy is high, so that bearing controller 200 be facilitated accurately to be protected when colliding failure, improves indirectly
Magnetic suspension system reliability of operation.
Specifically, the displacement that data processor 150 can be measured according to displacement sensor 110 when axle center is located at central point
Number letter corresponding to the displacement signal that digital signal corresponding to signal and displacement sensor 110 measured at current time
Number, obtain the linear distance in current time axle center off center point.In one embodiment, digital signal includes first direction
Displacement and second direction displacement, first direction and second direction are mutually perpendicular to.Wherein, the displacement and second party of first direction
To displacement be indicate distance numerical value.Specifically, first direction can be the direction of the first line, i.e. first position point and guarantor
Protect the extending direction of the line where the central point of bearing, second direction can be the direction of the second line, i.e., second position point with
Protect the extending direction of the line where the central point of bearing；Accordingly, the displacement of first direction is equal to the number of the first displacement signal
The displacement of value corresponding to word signal, second direction is equal to value corresponding to the digital signal of second displacement signal.
Data processor 150 is displaced according to the displacement of first direction and the first direction center that has been arranged, calculates axis the
The distance of off center point obtains the first offset distance on one direction, according to the displacement of second direction and the second direction being arranged
Center displacement, the distance for calculating axis off center point in a second direction obtain the second offset distance；According to the first offset distance
With the second offset distance, the linear distance of the central point of the axle center offset protection bearing of axis is calculated.
Specifically, with the axle center of axis be located at protection bearing central point when, the first displacement sensor measure first displacement
The value of digital signal corresponding to signal be x0, with the axle center of axis be located at protection bearing central point when, second displacement sensor
The value of digital signal corresponding to the second displacement signal measured is y0, and when axis occurs mobile, the first displacement sensor measures
The first displacement signal corresponding to the value of digital signal be x1, when axis occurs mobile, second displacement sensor measures the
The value of digital signal corresponding to two displacement signals is y1；Then data processor 150 can calculate the axle center of axis according to the following formula
The linear distance of the central point of offset protection bearing:
X=x1-x0；
Y=y1-y0；
Wherein, S indicates linear distance, and x indicates the moving distance of the axle center of axis in a first direction, and y indicates the axle center of axis
Moving distance in a second direction.By the way that the moving distance in the moving distance and second direction on first direction is combined
Come, the linear distance of axle center off center point, convenience of calculation is calculated, and can accurately reflect the practical distance moved of axis.
In one embodiment, digital signal includes the displacement of first direction and the displacement of second direction, first direction and
Second direction is mutually perpendicular to.Fault message includes collision bearing.In the present embodiment, data processor 150 is according to continuous received
The displacement of first direction determines the moving direction of axis in a first direction, determines axis according to the displacement of continuous received second direction
Moving direction in a second direction, moving direction according to moving direction in a first direction and in a second direction determine
Collision bearing is sent to bearing controller 200 by the collision bearing of axis.
Data processor 150 determines the mobile side of axis in a first direction according to the displacement of continuous received first direction
To specifically can be the displacement of the continuous received first direction of comparison.As shown in figure 4, with where the first displacement sensor
Orientation be under orientation where left, second displacement sensor is then protect bearing with the first displacement sensor relative position
Orientation be the right side, protecting bearing with second displacement sensor relative position orientation is upper；Using the direction turned right as x-axis just
Direction, the positive direction that direction up is y-axis, if the displacement of time received first direction is less than previous after data processor 150
The displacement of received first direction, then it represents that axis determines axis in a first direction toward close to the movement of the direction of the first displacement sensor
On moving direction be a left side.Similarly, if the displacement of time received second direction is less than previous received the after data processor 150
The displacement in two directions, then it represents that axis determines the movement of axis in a first direction toward close to the movement of the direction of second displacement sensor
Under direction is；In conjunction with the moving direction on first direction and moving direction in a second direction, it may be determined that the collision bearing of axis
For lower-left.
By determining the collision bearing of axis according to digital signal, collision bearing is sent to bearing controller 200, thus axis
Holding controller 200 and can knowing is collision under which kind of direction of motion, convenient for 200 control shaft of bearing controller toward opposite orientation
Adjustment, so as to improve the validity of levitation position adjustment indirectly.
It is appreciated that in other embodiments, fault message can also be pre-set information, such as can be table
Show the specific sequence number of failure, pre-set fault message is sent to by data processor 150 when colliding failure
Bearing controller 200.
In one embodiment, with reference to Fig. 5, data processor 150 includes single-chip microcontroller 151, first communication module 152 and the
Two communication modules 153, single-chip microcontroller 151 connect analog-digital converter 130, first communication module 152 and second communication module 153, the
One communication module 152 and second communication module 153 are all connected with bearing controller 200.Wherein, the transmission of second communication module 153
Speed is greater than the transmission speed of first communication module 152.Single-chip microcontroller 151 is judging that there is no passing through first when collision failure
Digital signal is sent to bearing controller 200 by communication module 152, when judgement collides failure, passes through the first communication mould
Fault message is sent to bearing controller 200 by block 152, and exports preset Reflector to second communication module 153, and second
Reflector is sent to bearing controller 200 by communication module 153.
By the way that digital signal and fault message are sent to bearing controller 200 by first communication module 152, by failure
Mark is sent to bearing controller 200 by the faster second communication module 153 of transmission speed, when colliding failure generation, axis
Reflector can be received before receiving fault message by holding controller 200, and bearing controller 200 is first carried out
Error protection processing, the fault message sent further according to after is further processed, can be improved protection timeliness and can
By property.In addition, communicating using two-way, there is redundancy feature, reliability is stronger.
In one embodiment, first communication module 152 includes 485 communication interfaces, CAN communication interface, ethernet communication
Any one of interface, second communication module 153 include fiber optical transceiver.Fiber optical transceiver passes through fiber optic communication, transmission speed
Than in 485 communication interfaces, CAN communication interface, ethernet interface, any transmission speed is big, it can be ensured that in collision event
It is relatively early to receive Reflector when barrier occurs.
In one embodiment, with reference to Fig. 6, a kind of magnetic suspension system, including axis 210, protection bearing 220, axis are provided
Winding group 230, bearing controller 200 and magnetic suspension bearing displacement detection device, axis 210 are set to the hollow of protection bearing 220
Region, bearing winding 230 are set around 220 periphery of protection bearing, and bearing controller 200 connects data processor and bearing winding
230。
Above-mentioned magnetic suspension system similarly may make bearing control due to using aforementioned magnetic suspension bearing displacement detection device
The accuracy of the received digital signal of device 200 processed is higher, higher to the Bit andits control accuracy of axis 210, so as to improve magnetic
The operation stability of suspension system.
Specifically, the quantity of bearing winding 230 can have multiple.As shown in fig. 6, there are four bearing windings 230, wherein one
The magnetic force that two opposite bearing windings 230 of group generate is used for the suspension up and down of control shaft 210, another group of opposite two bearing
Left and right of the magnetic force that winding 230 generates for control shaft 210 suspends, and final purpose is that axis 210 is made to be suspended in central point.Bearing around
The shape of 230 windings of group and protection bearing 220 are coaxial, and protection bearing 220 can prevent the direct contact bearing winding 230 of axis 210.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of magnetic suspension bearing displacement detection device, which is characterized in that at displacement sensor, analog-digital converter and data
Device is managed, institute's displacement sensors, the analog-digital converter and the data processor are sequentially connected, and the data processor connects
Connect the bearing controller of magnetic suspension system；
Institute's displacement sensors detect the displacement of the magnetic suspension system axis and output displacement signal to the analog-digital converter,
The analog-digital converter obtains digital signal to institute's displacement signal progress analog-to-digital conversion and exports to the data processor, institute
It states data processor and the digital signal is sent to the bearing controller.
2. magnetic suspension bearing displacement detection device according to claim 1, which is characterized in that institute's displacement sensors include
First displacement sensor and second displacement sensor, first displacement sensor are set to the first of the protection bearing of the axis
Location point, the second displacement sensor are set to the second position point of the protection bearing；With the first position point and institute
Line where stating the central point of protection bearing is the central point place of the first line, second position point and the protection bearing
Line be the second line, first line is mutually perpendicular to second line；
First displacement sensor and the second displacement sensor are all connected with the analog-digital converter, and first displacement passes
Sensor detects displacement of the axis on the direction of first line and exports the first displacement signal to the analog-to-digital conversion
Device, the second displacement sensor detect displacement of the axis on the direction of second line and export second displacement letter
Number to the analog-digital converter.
3. magnetic suspension bearing displacement detection device according to claim 2, which is characterized in that first displacement sensor
It is eddy current displacement sensor with the second displacement sensor.
4. magnetic suspension bearing displacement detection device described in any one of -3 according to claim 1, which is characterized in that the number
Judge whether that the corresponding collision failure for protecting bearing of axis collision occurs according to the digital signal according to processor, if not sending out
Raw collision failure, then be sent to the bearing controller for the digital signal；If colliding failure, according to the number
Signal sends fault message to the bearing controller.
5. magnetic suspension bearing displacement detection device according to claim 4, which is characterized in that the data processor according to
The axle center that the digital signal obtains the axis deviate it is described protection bearing central point linear distance, and by the straight line away from
From be compared with a distance from default peak excursion, if the linear distance be less than the default peak excursion distance, judgement do not have
Collide failure, if the linear distance is greater than or equal to the default peak excursion distance, determines the event that collides
Barrier.
6. magnetic suspension bearing displacement detection device according to claim 5, which is characterized in that the digital signal includes the
The displacement in one direction and the displacement of second direction, the first direction and the second direction are mutually perpendicular to；The data processing
Device is displaced according to the displacement of the first direction with the first direction center being arranged, and calculates the axis in said first direction
The distance for deviating the central point obtains the first offset distance, according to the displacement of the second direction and the second direction being arranged
Center displacement, calculates the axis and deviates the distance of the central point in this second direction and obtain the second offset distance；According to
First offset distance and second offset distance, the axle center for calculating the axis deviate the central point for protecting bearing
Linear distance.
7. magnetic suspension bearing displacement detection device according to claim 4, which is characterized in that the digital signal includes the
The displacement in one direction and the displacement of second direction, the first direction and the second direction are mutually perpendicular to, the fault message
Including collision bearing；
The data processor determines the shifting of the axis in said first direction according to the displacement of continuous received first direction
Dynamic direction determines the moving direction of the axis in this second direction according to the displacement of continuous received second direction, according to
Moving direction in said first direction and moving direction in this second direction determine the collision bearing of the axis, will
The collision bearing is sent to the bearing controller.
8. magnetic suspension bearing displacement detection device according to claim 4, which is characterized in that the data processor includes
Single-chip microcontroller, first communication module and second communication module, the single-chip microcontroller connect the analog-digital converter, the first communication mould
Block and the second communication module, the first communication module and the second communication module are all connected with the bearing controller,
The transmission speed of the second communication module is greater than the transmission speed of the first communication module；
The single-chip microcontroller is judging that there is no sending the digital signal by the first communication module when collision failure
The fault message is sent by the first communication module when judgement collides failure to the bearing controller
To the bearing controller, and export preset Reflector to the second communication module, the second communication module is by institute
It states Reflector and is sent to the bearing controller.
9. magnetic suspension bearing displacement detection device according to claim 8, which is characterized in that the first communication module packet
Any one of 485 communication interfaces, CAN communication interface, ethernet interface are included, the second communication module includes that optical fiber is received
Send out device.
10. a kind of magnetic suspension system, which is characterized in that wanted including axis, protection bearing, bearing winding, bearing controller and right
Magnetic suspension bearing displacement detection device described in any one of 1-9 is sought, the axis is set to the hollow area of the protection bearing
Domain, the bearing winding are set around protection bearing periphery, and the bearing controller connects the data processor and described
Bearing winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910381251.1A CN110030264A (en) | 2019-05-08 | 2019-05-08 | Magnetic suspension bearing displacement detection device and magnetic suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910381251.1A CN110030264A (en) | 2019-05-08 | 2019-05-08 | Magnetic suspension bearing displacement detection device and magnetic suspension system |
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| CN110030264A true CN110030264A (en) | 2019-07-19 |
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| CN201910381251.1A Pending CN110030264A (en) | 2019-05-08 | 2019-05-08 | Magnetic suspension bearing displacement detection device and magnetic suspension system |
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| CN112014776A (en) * | 2020-09-11 | 2020-12-01 | 广东美的暖通设备有限公司 | Wiring detection method, magnetic suspension compressor, air conditioning unit and readable storage medium |
| CN114136616A (en) * | 2021-11-26 | 2022-03-04 | 广东美的暖通设备有限公司 | Magnetic suspension compressor, bearing detection method and device thereof and air conditioner |
| CN114362435A (en) * | 2022-03-08 | 2022-04-15 | 天津飞旋科技股份有限公司 | Magnetic suspension bearing monitoring system, method and device, motor equipment and storage medium |
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