CN105509684A - Detection method, apparatus, and system for axial displacement - Google Patents
Detection method, apparatus, and system for axial displacement Download PDFInfo
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- CN105509684A CN105509684A CN201510830628.9A CN201510830628A CN105509684A CN 105509684 A CN105509684 A CN 105509684A CN 201510830628 A CN201510830628 A CN 201510830628A CN 105509684 A CN105509684 A CN 105509684A
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- axial displacement
- position sensor
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- rotary part
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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
Abstract
The invention discloses a detection method, apparatus, and system for axial displacement. The method comprises: axial displacement detected by each of multiple axial displacement sensors is obtained, wherein the detection direction of each axial displacement sensor is parallel to a rotor axis of a rotation component and the multiple axial displacement sensors are arranged at the same side of a detection plane and are arranged uniformly along the peripheral direction of the rotation component; and according to the obtained multiple axial displacement sensors, target axial displacement of the rotation component is determined. Therefore, a technical problem that the detection result of the axial displacement is not accurate due to detection plane inclination can be solved.
Description
Technical field
The present invention relates to detection field, in particular to a kind of detection method, Apparatus and system of axial displacement.
Background technology
Magnetic levitation bearing system utilizes controllable electric magnetic force rotating shaft to be suspended.As shown in Figure 1, magnetic levitation bearing system is primarily of magnetic bearing, rotating shaft, displacement transducer, controller and power amplifier composition.Wherein, displacement transducer comprises shaft position sensor and radial displacement transducer, the axial location change that shaft position sensor is used for continuous detecting rotating shaft (is also, for detecting the axial displacement of rotating shaft), when shaft position sensor detects that the axial displacement of rotating shaft departs from reference to after displacement, controller accordingly generates control signal, then power amplifier converts this control signal to control electric current, control electric current produces magnetic force in magnetic bearing enables rotating shaft stable suspersion in reference displacement place, so the control of shaft position sensor to whole magnetic levitation bearing system plays vital effect, the accuracy that axial displacement detects directly will determine the stability that magnetic levitation bearing system runs.
In a 5DOF magnetic levitation bearing system, be made up of 2 radial magnetic bearings and 1 Axial Magnetic Bearing.In Axial Magnetic Bearing controls, shaft position sensor 25 is installed perpendicular to detection faces, detection faces is an outside surface being enclosed within the fixed disc 21 in rotating shaft, so when disk vertical rotation axis, detection faces is also perpendicular to rotating shaft, same, when disk is not orthogonal to rotating shaft, detection faces is also not orthogonal to rotating shaft.As shown in Figure 2, shaft position sensor 25 obtains the axial displacement of rotating shaft by the axial displacement detected between itself and detection faces, and the detection of axial displacement is all realized by a shaft position sensor in prior art, if disk is vertical with rotating shaft, then detection faces and rotating shaft are also vertical, and the axial displacement that at this moment shaft position sensor detects is with reference to displacement d
ref.Wherein, disk 21, position relationship between rotating shaft 23 and shaft position sensor 25 can see Fig. 3.
Below in conjunction with Fig. 1 and Fig. 2, the control procedure of Axial Magnetic Bearing is described as follows: set reference displacement in Fig. 1 as d
refdue to external force f effect, when rotating shaft 23 moves axially, shaft position sensor 25 detects that the distance of itself and detection faces changes, pass through control system, Axial Magnetic Bearing 27 will produce corresponding electromagnetic force on thrust button 29, makes rotating shaft produce one and the rightabout motion of external force f, and finally gets back to reference to displacement d
refcorresponding position.
Because axial displacement is determined by measuring detection faces, so detection faces wants the displacement that can reflect rotating shaft truly, it is completely vertical for must meeting detection faces with rotating shaft, unavoidably, due to processing and the error of fit on, disk can not be completely vertical with rotating shaft, can there is certain inclination.If disk tilts, then detection faces also will tilt, and when rotating shaft rotates, the axial displacement of being measured by detection faces just can not the axially-movable of actual response rotating shaft.
As shown in fig. 4 a, if when disk 21 is in A position, show that disk is perpendicular to rotating shaft, and then detection faces is also perpendicular to rotating shaft 23, then the axial displacement that shaft position sensor detects is reference displacement d
ref; If rotating shaft rotates to the first angle, disk is with axis of rotation, make disk be positioned at primary importance (to be also, B position in Fig. 4 a), show that disk is not orthogonal to rotating shaft, and then detection faces is also not orthogonal to rotating shaft, then the axial displacement that shaft position sensor detects is that d1, d1 are greater than with reference to displacement d
refas shown in Figure 4 b, when rotating shaft rotates to the second angle, disk, with axis of rotation, makes disk be positioned at the second place (the C position also namely, in Fig. 4 b), show that disk is not orthogonal to rotating shaft, and then detection faces is also not orthogonal to rotating shaft, then the axial displacement that shaft position sensor 25 detects is that d2, d2 are less than with reference to displacement d
ref.The axial displacement that above-mentioned shaft position sensor detects can with sinusoidal trend change as shown in Figure 5, and wherein, mean value d is the reference displacement d in foregoing
ref, and known d1-d
ref=d
ref-d2.
And in fact, the control of Axial Magnetic Bearing is the distance between itself and detection faces detected with shaft position sensor, axial displacement) as input quantity, therefore when rotating shaft rotates, axial displacement is in continuous change, therefore Axial Magnetic Bearing will produce a corresponding power according to the size of the axial displacement detected and control rotating shaft and move round about, because the displacement fluctuation tilting to bring because of detection faces in rotary course exists all the time, therefore Axial Magnetic Bearing will control the periodic axially-movable of rotating shaft, thus the control that impact is axial, along with the rising of rotating speed, this impact can be more and more serious, rotating shaft is caused axially to control unstability the most at last.
For above-mentioned problem, at present effective solution is not yet proposed.
Summary of the invention
Embodiments provide a kind of detection method of axial displacement, Apparatus and system, at least to solve in prior art because detection faces tilts to cause the inaccurate technical matters of axial displacement testing result.
According to an aspect of the embodiment of the present invention, provide a kind of detection method of axial displacement, comprise: obtain the axial displacement that in multiple shaft position sensor, each described shaft position sensor detects, wherein, the detection side of each described shaft position sensor is to the rotor axis being parallel to rotary part, multiple described shaft position sensors are all positioned at the same side of detection faces, and evenly arrange along the circumference of described rotary part; The target axial displacement of described rotary part is determined according to the multiple described axial displacement got.
Further, determine that the target axial displacement of described rotary part comprises according to the multiple described axial displacement got: determine described target axial displacement according to the mean value of multiple described axial displacement.
Further, multiple described shaft position sensor comprises the first shaft position sensor and the second shaft position sensor, wherein: obtain the axial displacement that in multiple shaft position sensor, each described shaft position sensor detects and comprise: obtain the first axial displacement that described first shaft position sensor detects and obtain the second axial displacement that described second shaft position sensor detects; Determine that the target axial displacement of described rotary part comprises according to the multiple described axial displacement got: determine described target axial displacement according to described first axial displacement and described second axial displacement.
Further, determine that the target axial displacement of described rotary part comprises according to described first axial displacement and described second axial displacement: the mean value according to described first axial displacement and described second axial displacement determines described target axial displacement.
Further, determine that the target axial displacement of described rotary part comprises according to described first axial displacement and described second axial displacement: according to formula d
mdescribed target axial displacement is determined in=(d1+d2)/2, wherein, and d
mfor described target axial displacement, d1 is described first axial displacement, and d2 is described second axial displacement.
According to the another aspect of the embodiment of the present invention, provide a kind of pick-up unit of axial displacement, comprise: acquiring unit, for obtaining the axial displacement that in multiple shaft position sensor, each described shaft position sensor detects, wherein, the detection side of each described shaft position sensor is to the rotor axis being parallel to rotary part, and multiple described shaft position sensors are all positioned at the same side of detection faces, and evenly arranges along the circumference of described rotary part; Determining unit, for determining the target axial displacement of described rotary part according to the multiple described axial displacement got.
Further, described determining unit comprises: the first determination module, for determining described target axial displacement according to the mean value of multiple described axial displacement.
Further, multiple described shaft position sensor comprises the first shaft position sensor and the second shaft position sensor, wherein: described acquiring unit comprises: acquisition module, for obtaining the first axial displacement that described first shaft position sensor detects and obtaining the second axial displacement that described second shaft position sensor detects; Described determining unit comprises: the second determination module, for determining described target axial displacement according to described first axial displacement and described second axial displacement.
Further, described second determination module comprises: first determines submodule, for determining described target axial displacement according to the mean value of described first axial displacement and described second axial displacement.
According to the another aspect of the embodiment of the present invention, provide a kind of detection system of axial displacement, comprise: multiple shaft position sensor, wherein, the detection side of each described shaft position sensor is to the rotor axis being parallel to rotary part, multiple described shaft position sensors are all positioned at the same side of detection faces, and evenly arrange along the circumference of described rotary part; Controller, is connected respectively with multiple described shaft position sensor, for obtaining the axial displacement that in multiple described shaft position sensor, each described shaft position sensor detects, and according to the multiple described axial displacement determination target axial displacement got.
In embodiments of the present invention, adopt and obtain the axial displacement that in multiple shaft position sensor, each described shaft position sensor detects, wherein, the detection side of each described shaft position sensor is to the rotor axis being parallel to rotary part, multiple described shaft position sensors are all positioned at the same side of detection faces, and evenly arrange along the circumference of described rotary part; According to the multiple described axial displacement determination target axial displacement got.The same side of detection faces is arranged on by basis, and the final axial displacement of rotary part is jointly determined along multiple axial displacements that multiple axial sensor that the circumference of rotary part is evenly arranged detect, compared with determining the final axial displacement of rotary part with the axial displacement only detected according to a shaft position sensor in prior art, the axial displacement of rotary part can be determined comparatively accurately, thus reach the inclination of elimination detection faces to the impact axially controlled, improve the object of the operation stability of magnetic levitation bearing system, solve in prior art because detection faces tilts to cause the inaccurate technical matters of axial displacement testing result, achieve the effect improving axial displacement detection accuracy.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of magnetic levitation bearing system composition structure in prior art;
Fig. 2 is the axial arrangement schematic diagram of prior art shaft assembly;
Fig. 3 is disk of the prior art, position relationship schematic diagram between rotating shaft and shaft position sensor;
Fig. 4 a is when in prior art, disk is positioned at primary importance, and shaft position sensor detects the schematic diagram of axial displacement;
Fig. 4 b is when in prior art, disk is positioned at the second place, and shaft position sensor detects the schematic diagram of axial displacement;
Fig. 5 is the Long-term change trend figure of the axial displacement that shaft position sensor of the prior art detects;
Fig. 6 is the process flow diagram of the detection method of a kind of axial displacement according to the embodiment of the present invention;
Fig. 7 a is the detection method of the axial displacement adopting the embodiment of the present invention, and when disk is positioned at primary importance, multiple shaft position sensor detects the schematic diagram of axial displacement;
Fig. 7 b is the detection method of the axial displacement adopting the embodiment of the present invention, and when disk is positioned at the second place, multiple shaft position sensor detects the schematic diagram of axial displacement;
Fig. 8 is the detection method of axial displacement adopting the embodiment of the present invention, disk, position relationship schematic diagram between rotating shaft and multiple shaft position sensor; And
Fig. 9 is the schematic diagram of the pick-up unit of a kind of axial displacement according to the embodiment of the present invention.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in instructions of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
According to the embodiment of the present invention, provide a kind of detection method of axial displacement, this detection method can be applied in magnetic levitation bearing system.Fig. 6 is the process flow diagram of the detection method of a kind of axial displacement according to the embodiment of the present invention, and as shown in Figure 6, the method comprising the steps of S602 is to step S604, specific as follows:
Step S602, obtain the axial displacement that in multiple shaft position sensor, each shaft position sensor detects, wherein, the detection side of each shaft position sensor is to the rotor axis being parallel to rotary part, multiple shaft position sensor is all positioned at the same side of detection faces, and evenly arranges along the circumference of rotary part.
Particularly, the quantity of shaft position sensor can be determined according to demand, but is at least two.When the quantity of shaft position sensor is 2, then these 2 shaft position sensors is separated by 180 ° along the circumference of rotary part in the same side of detection faces and symmetrical installs.It should be noted that, the quantity of shaft position sensor should be even number.
In addition, a shaft position sensor can only detect an axial displacement, so the quantity of the axial displacement detected and the quantity of shaft position sensor is equal, also, and the corresponding shaft position sensor of the axial displacement detected.
It should be noted that, the detection faces in above-mentioned steps S602 is identical with the detection faces in background technology, namely, is fixedly mounted on the outside surface of the disk on rotary part.Wherein, rotary part can be rotating shaft.
Step S604, according to the target axial displacement of the multiple axial displacement determination rotary parts got.
Wherein, target axial displacement is the axial displacement of rotary part, bearing controller can using the axial displacement of above-mentioned rotary part as control input signal, to control the levitation position of rotary part.
In embodiments of the present invention, the same side of detection faces is arranged on by basis, and the final axial displacement of rotary part is jointly determined along multiple axial displacements that multiple axial sensor that the circumference of rotary part is evenly arranged detect, compared with determining the final axial displacement of rotary part with the axial displacement only detected according to a shaft position sensor in prior art, the axial displacement of rotary part can be determined comparatively accurately, thus reach the impact eliminated detection faces and tilt on axial displacement, improve the object of the operation stability of magnetic levitation bearing system, solve in prior art because detection faces tilts to cause the inaccurate technical matters of axial displacement testing result, achieve the effect improving axial displacement detection accuracy.
Alternatively, in embodiments of the present invention, comprise according to the target axial displacement of the multiple axial displacement determination rotary parts got: according to the mean value determination target axial displacement of multiple axial displacement.
In embodiments of the present invention, by the axial displacement as rotary part of the mean value of multiple axial displacements that will detect, can eliminate detection faces tilts on the impact of axial displacement and the impact of axially control, avoid because detection faces tilts to cause axial unstability, reach the technique effect of the operation stability that improve magnetic levitation bearing system further.
Alternatively, multiple shaft position sensor comprises the first shaft position sensor and the second shaft position sensor, wherein, obtain the axial displacement that in multiple shaft position sensor, each shaft position sensor detects to comprise: obtain the first axial displacement that the first shaft position sensor detects and obtain the second axial displacement that the second shaft position sensor detects; Multiple axial displacement determination target axial displacement according to getting comprises: according to the first axial displacement and the second axial displacement determination target axial displacement.
Alternatively, comprise according to the first axial displacement and the second axial displacement determination target axial displacement: according to the mean value determination target axial displacement of the first axial displacement and the second axial displacement.
Alternatively, comprise according to the first axial displacement and the second axial displacement determination target axial displacement: according to formula d
mtarget axial displacement is determined in=(d1+d2)/2, wherein, and d
mfor target axial displacement, d1 is the first axial displacement, and d2 is the second axial displacement.
When multiple shaft position sensor comprises the first shaft position sensor 25-1 and the second shaft position sensor 25-2, composition graphs 7a and Fig. 7 b, is described as follows:
See Fig. 7 a, when disk is in primary importance (that is, the B position in Fig. 7 a), the first axial displacement that the first shaft position sensor 25-1 detects is d1, wherein, and d1 > d
ref, the second axial displacement that the second shaft position sensor 25-2 detects is d2, wherein, and d2 < d
ref, then the target axial displacement d of rotary part is determined according to d1 and d2
m=(d1+d2)/2=d
ref, wherein, d
reffor the axial displacement detected during detection faces vertical rotary parts, also, the reference displacement described in background technology.
See Fig. 7 b, when disk is in the second place (that is, the C position in Fig. 7 b), the first axial displacement that the first shaft position sensor 25-1 detects is d1, wherein, and d1 < d
ref, the second axial displacement that the second shaft position sensor 25-2 detects is d2, wherein, and d2 > d
ref, then the target axial displacement d of rotary part is determined according to d1 and d2
m=(d1+d2)/2=d
ref.
Wherein, multiple shaft position sensor (has only schematically gone out two shaft position sensors in figure, that is, the first shaft position sensor 25-1 and the second shaft position sensor 25-2), position relationship between disk 21 and rotating shaft 23 can see Fig. 8.
Due to 180 ° of symmetrical installations of being separated by between the first shaft position sensor and the second shaft position sensor, no matter so when detection faces tilts to primary importance or the second place, be equal to d according to the target axial displacement that the first axial displacement and the second axial displacement are determined
ref, therefore, no matter whether detection faces tilts, in one week that rotates at rotary part, the mean value of the axial displacement that two shaft position sensors detect is constant, and namely the axial displacement of rotary part remains on reference to displacement d
refplace, thus eliminate because detection faces tilts on the impact axially controlling to cause, thus realize the stable suspersion of rotating shaft, also just improve the stability that magnetic levitation bearing system runs.
According to the embodiment of the present invention, additionally provide a kind of pick-up unit of axial displacement, this pick-up unit can be applied in magnetic levitation bearing system, the pick-up unit of this axial displacement, for the detection method of axial displacement performing embodiment of the present invention foregoing and provide, does concrete introduction to the pick-up unit of the axial displacement that the embodiment of the present invention provides below:
Fig. 9 is the schematic diagram of the pick-up unit of a kind of axial displacement according to the embodiment of the present invention, and as shown in Figure 9, this pick-up unit mainly comprises acquiring unit 91 and determining unit 93, wherein:
Acquiring unit 91 is for obtaining the axial displacement that in multiple shaft position sensor, each shaft position sensor detects, wherein, the detection side of each shaft position sensor is to the rotor axis being parallel to rotary part, multiple shaft position sensor is all positioned at the same side of detection faces, and evenly arranges along the circumference of rotary part.
Particularly, a shaft position sensor can only detect an axial displacement, so the quantity of the axial displacement detected and the quantity of shaft position sensor is equal, also, and the corresponding shaft position sensor of the axial displacement detected.
Wherein, the quantity of shaft position sensor can be determined according to demand, but is at least two.When the quantity of shaft position sensor is 2, then these 2 shaft position sensors is separated by 180 ° along the circumference of rotary part in the same side of detection faces and symmetrical installs.It should be noted that, the quantity of shaft position sensor should be even number.
It should be noted that, the detection faces in above-mentioned acquiring unit is identical with the detection faces in background technology, namely, is fixedly mounted on the outside surface of the disk on rotary part.Wherein, rotary part can be rotating shaft.
Determining unit 93 is for the target axial displacement according to the multiple axial displacement determination rotary parts got.
Wherein, target axial displacement is the axial displacement of rotary part, bearing controller can using the axial displacement of above-mentioned rotary part as control input signal, to control the levitation position of rotary part.
In embodiments of the present invention, the same side of detection faces is arranged on by basis, and the final axial displacement of rotary part is jointly determined along multiple axial displacements that multiple axial sensor that the circumference of rotary part is evenly arranged detect, compared with determining the final axial displacement of rotary part with the axial displacement only detected according to a shaft position sensor in prior art, the axial displacement of rotary part can be determined comparatively accurately, thus reach the impact eliminated detection faces and tilt on axial displacement, improve the object of the operation stability of magnetic levitation bearing system, solve in prior art because detection faces tilts to cause the inaccurate technical matters of axial displacement testing result, achieve the effect improving axial displacement detection accuracy.
Alternatively, in embodiments of the present invention, determining unit comprises the first determination module.Wherein, the first determination module is used for the mean value determination target axial displacement according to multiple axial displacement.
In embodiments of the present invention, by the axial displacement as rotary part of the mean value of multiple axial displacements that will detect, can eliminate detection faces tilts on the impact of axial displacement and the impact of axially control, avoid because detection faces tilts to cause axial unstability, reach the technique effect of the operation stability that improve magnetic levitation bearing system further.
Alternatively, in embodiments of the present invention, multiple shaft position sensor comprises the first shaft position sensor and the second shaft position sensor, wherein, acquiring unit comprises: acquisition module, for obtaining the first axial displacement that the first shaft position sensor detects and obtaining the second axial displacement that the second shaft position sensor detects; Determining unit comprises: the second determination module, for according to the first axial displacement and the second axial displacement determination target axial displacement.
Alternatively, in embodiments of the present invention, the second determination module comprises: first determines submodule, for the mean value determination target axial displacement according to the first axial displacement and the second axial displacement.
Alternatively, in embodiments of the present invention, the second determination module comprises: second determines submodule, for according to formula d
mtarget axial displacement is determined in=(d1+d2)/2, wherein, and d
mfor target axial displacement, d1 is the first axial displacement, and d2 is the second axial displacement.
According to the embodiment of the present invention, additionally provide a kind of detection system of axial displacement.This detection system comprises: multiple shaft position sensor, wherein, the detection side of each shaft position sensor is to the rotor axis being parallel to rotary part, and multiple shaft position sensor is all positioned at the same side of detection faces, and evenly arranges along the circumference of rotary part; Controller, is connected respectively with multiple shaft position sensor, for obtaining the axial displacement that in multiple shaft position sensor, each shaft position sensor detects, and according to the multiple axial displacement determination target axial displacement got.
In embodiments of the present invention, the same side of detection faces is arranged on by basis, and the final axial displacement of rotary part is jointly determined along multiple axial displacements that multiple axial sensor that the circumference of rotary part is evenly arranged detect, compared with determining the final axial displacement of rotary part with the axial displacement only detected according to a shaft position sensor in prior art, the axial displacement of rotary part can be determined comparatively accurately, thus reach the impact eliminated detection faces and tilt on axial displacement, improve the object of the operation stability of magnetic levitation bearing system, solve in prior art because detection faces tilts to cause the inaccurate technical matters of axial displacement testing result, achieve the effect improving axial displacement detection accuracy.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiment provided by the present invention, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a detection method for axial displacement, is characterized in that, comprising:
Obtain the axial displacement that in multiple shaft position sensor, each described shaft position sensor detects, wherein, the detection side of each described shaft position sensor is to the rotor axis being parallel to rotary part, multiple described shaft position sensors are all positioned at the same side of detection faces, and evenly arrange along the circumference of described rotary part;
The target axial displacement of described rotary part is determined according to the multiple described axial displacement got.
2. method according to claim 1, is characterized in that, determines that the target axial displacement of described rotary part comprises according to the multiple described axial displacement got:
Described target axial displacement is determined according to the mean value of multiple described axial displacement.
3. method according to claim 1, is characterized in that, multiple described shaft position sensor comprises the first shaft position sensor and the second shaft position sensor, wherein:
Obtain the axial displacement that in multiple shaft position sensor, each described shaft position sensor detects to comprise:
Obtain the first axial displacement that described first shaft position sensor detects and obtain the second axial displacement that described second shaft position sensor detects;
Determine that the target axial displacement of described rotary part comprises according to the multiple described axial displacement got:
Described target axial displacement is determined according to described first axial displacement and described second axial displacement.
4. method according to claim 3, is characterized in that, determines that the target axial displacement of described rotary part comprises according to described first axial displacement and described second axial displacement:
Mean value according to described first axial displacement and described second axial displacement determines described target axial displacement.
5. method according to claim 3, is characterized in that, determines that the target axial displacement of described rotary part comprises according to described first axial displacement and described second axial displacement:
According to formula d
mdescribed target axial displacement is determined in=(d1+d2)/2, wherein, and d
mfor described target axial displacement, d1 is described first axial displacement, and d2 is described second axial displacement.
6. a pick-up unit for axial displacement, is characterized in that, comprising:
Acquiring unit, for obtaining the axial displacement that in multiple shaft position sensor, each described shaft position sensor detects, wherein, the detection side of each described shaft position sensor is to the rotor axis being parallel to rotary part, multiple described shaft position sensors are all positioned at the same side of detection faces, and evenly arrange along the circumference of described rotary part;
Determining unit, for determining the target axial displacement of described rotary part according to the multiple described axial displacement got.
7. device according to claim 6, is characterized in that, described determining unit comprises:
First determination module, for determining described target axial displacement according to the mean value of multiple described axial displacement.
8. device according to claim 6, is characterized in that, multiple described shaft position sensor comprises the first shaft position sensor and the second shaft position sensor, wherein:
Described acquiring unit comprises:
Acquisition module, for obtaining the first axial displacement that described first shaft position sensor detects and obtaining the second axial displacement that described second shaft position sensor detects;
Described determining unit comprises:
Second determination module, for determining described target axial displacement according to described first axial displacement and described second axial displacement.
9. device according to claim 8, is characterized in that, described second determination module comprises:
First determines submodule, for determining described target axial displacement according to the mean value of described first axial displacement and described second axial displacement.
10. a detection system for axial displacement, is characterized in that, comprising:
Multiple shaft position sensor, wherein, the detection side of each described shaft position sensor is to the rotor axis being parallel to rotary part, and multiple described shaft position sensors are all positioned at the same side of detection faces, and evenly arranges along the circumference of described rotary part;
Controller, is connected respectively with multiple described shaft position sensor, for obtaining the axial displacement that in multiple described shaft position sensor, each described shaft position sensor detects, and according to the multiple described axial displacement determination target axial displacement got.
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| WO2017084604A1 (en) * | 2015-11-18 | 2017-05-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial displacement detection method, device and system |
| CN107314737A (en) * | 2017-07-12 | 2017-11-03 | 武汉理工大学 | A kind of magnetic suspension rotor axial displacement radial measurement method |
| CN107725591A (en) * | 2017-09-11 | 2018-02-23 | 珠海格力节能环保制冷技术研究中心有限公司 | The update the system and modification method of magnetic suspension bearing suspension center |
| CN110411391A (en) * | 2019-07-05 | 2019-11-05 | 中国石油天然气股份有限公司 | Pipeline device for detecting axial displacement and method |
| CN112595371A (en) * | 2021-03-02 | 2021-04-02 | 成都工百利自动化设备有限公司 | Sensing system for working state of handcart type high-voltage circuit breaker contact |
| CN113028969A (en) * | 2021-05-24 | 2021-06-25 | 天津飞旋科技股份有限公司 | Method and device for measuring rotor elongation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544878A (en) * | 2003-11-14 | 2004-11-10 | 清华大学 | Method for measuring axial displacement of electromagnet bearing rotor |
| CN1800773A (en) * | 2006-01-25 | 2006-07-12 | 北京航空航天大学 | Radial/axial six-position integrated electric eddy transducer |
| CN102252592A (en) * | 2011-05-18 | 2011-11-23 | 济南磁能科技有限公司 | Axial displacement measuring device and method of rotor of artificial heart pump |
| CN202710018U (en) * | 2012-08-14 | 2013-01-30 | 中国水电顾问集团中南勘测设计研究院 | Rod-type coaxial multipoint displacement measuring device |
| CN203224222U (en) * | 2013-04-08 | 2013-10-02 | 成都赛腾自动化工程有限公司 | Multi-directional monitoring device for displacement of high speed motor shaft |
| CN105066857A (en) * | 2015-05-27 | 2015-11-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Shaft position detection device and magnetic levitation motor |
-
2015
- 2015-11-24 CN CN201510830628.9A patent/CN105509684A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544878A (en) * | 2003-11-14 | 2004-11-10 | 清华大学 | Method for measuring axial displacement of electromagnet bearing rotor |
| CN1800773A (en) * | 2006-01-25 | 2006-07-12 | 北京航空航天大学 | Radial/axial six-position integrated electric eddy transducer |
| CN102252592A (en) * | 2011-05-18 | 2011-11-23 | 济南磁能科技有限公司 | Axial displacement measuring device and method of rotor of artificial heart pump |
| CN202710018U (en) * | 2012-08-14 | 2013-01-30 | 中国水电顾问集团中南勘测设计研究院 | Rod-type coaxial multipoint displacement measuring device |
| CN203224222U (en) * | 2013-04-08 | 2013-10-02 | 成都赛腾自动化工程有限公司 | Multi-directional monitoring device for displacement of high speed motor shaft |
| CN105066857A (en) * | 2015-05-27 | 2015-11-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Shaft position detection device and magnetic levitation motor |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017084604A1 (en) * | 2015-11-18 | 2017-05-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial displacement detection method, device and system |
| CN106289077A (en) * | 2016-08-25 | 2017-01-04 | 中山市厚源电子科技有限公司 | A kind of Fructus Cannabis physical message of weaving cotton cloth measures equipment |
| CN107314737A (en) * | 2017-07-12 | 2017-11-03 | 武汉理工大学 | A kind of magnetic suspension rotor axial displacement radial measurement method |
| CN107314737B (en) * | 2017-07-12 | 2019-03-19 | 武汉理工大学 | A kind of magnetic suspension rotor axial displacement radial measurement method |
| CN107725591A (en) * | 2017-09-11 | 2018-02-23 | 珠海格力节能环保制冷技术研究中心有限公司 | The update the system and modification method of magnetic suspension bearing suspension center |
| CN107725591B (en) * | 2017-09-11 | 2019-12-10 | 珠海格力电器股份有限公司 | System and method for correcting suspension center position of magnetic suspension bearing |
| CN110411391A (en) * | 2019-07-05 | 2019-11-05 | 中国石油天然气股份有限公司 | Pipeline device for detecting axial displacement and method |
| CN110411391B (en) * | 2019-07-05 | 2022-03-01 | 中国石油天然气股份有限公司 | Pipeline axial displacement detection device and method |
| CN112595371A (en) * | 2021-03-02 | 2021-04-02 | 成都工百利自动化设备有限公司 | Sensing system for working state of handcart type high-voltage circuit breaker contact |
| CN113028969A (en) * | 2021-05-24 | 2021-06-25 | 天津飞旋科技股份有限公司 | Method and device for measuring rotor elongation |
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