CN105202023A - Magnetic suspension bearing system and its control method and device - Google Patents
Magnetic suspension bearing system and its control method and device Download PDFInfo
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- CN105202023A CN105202023A CN201410226429.2A CN201410226429A CN105202023A CN 105202023 A CN105202023 A CN 105202023A CN 201410226429 A CN201410226429 A CN 201410226429A CN 105202023 A CN105202023 A CN 105202023A
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- levitation
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Abstract
The invention discloses a magnetic suspension bearing system and its control method and device. The control method of the magnetic suspension bearing system comprises detecting an initial position of a middle axle of the magnetic suspension bearing system, detecting the central position of a protection bearing in the magnetic suspension bearing system, acquiring preset amplitude and preset frequency, calculating a middle suspension position in shaft floating according to the initial position, the central position, the preset amplitude and the preset frequency, and controlling a current passing through a bearing coil in the magnetic suspension bearing system by the middle suspension position as a control object. The method and device solve the problem that a protection bearing of the existing magnetic suspension bearing system is damaged easily, improve magnetic suspension bearing system reliability, prevent damage to the system and reduce a maintenance cost.
Description
Technical field
The present invention relates to magnetic suspension field, in particular to a kind of magnetic levitation bearing system and controlling method thereof and device.
Background technique
For pure electromagnetic type magnetic levitation bearing system; before system electrification; axle is parked in protection bearing bottom; if adopt the mode of direct floating axle, axle can rapid movement be to central position bottom from protection bearing, and floating axle moment bearing coil has larger electric current; the problem of axle crash protection bearing may be there is time serious; more easily shatter protection bearing, causes protecting bearing damage, has larger impact to system reliability.
Protection bearing for magnetic levitation bearing system in correlation technique holds flimsy problem, not yet proposes effective solution at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of magnetic levitation bearing system and controlling method thereof and device, holds flimsy problem with the protection bearing solving magnetic levitation bearing system in prior art.
According to an aspect of the present invention, a kind of controlling method of magnetic levitation bearing system is provided.
Controlling method according to magnetic levitation bearing system of the present invention comprises: the initial position detecting described magnetic levitation bearing system axis, and detects the central position protecting bearing in described magnetic levitation bearing system; Obtain predetermined amplitude and preset times, wherein, described predetermined amplitude represents that described axle moves to from described initial position the amplitude switching levitation position the process of described central position each time, and described preset times represents that described axle moves to from described initial position the total degree switching levitation position the process of described central position; The middle levitation position in described axle floating process is calculated according to described initial position, described central position, described predetermined amplitude and described preset times; And using described middle levitation position as control objectives control flow check through the electric current of described magnetic levitation bearing system middle (center) bearing coil.
Further, the middle levitation position calculated in described axle floating process according to described initial position, described central position, described predetermined amplitude and described preset times comprises: calculate the target component switching levitation position according to described initial position, described central position and described preset times; And calculate described middle levitation position according to described initial position, described predetermined amplitude and described target component.
Further, calculate described target component according to formula P=(C-B)/A, wherein, P is described target component, and C is described central position, and B is described initial position, and A is described preset times; According to formula C
x=P*S+B calculates described middle levitation position, wherein, and C
xfor described middle levitation position, S is described predetermined amplitude.
Further, described initial position B comprises the multiple initial position Bs of described axle in radial direction
i, i gets 1 to n successively, and n is the natural number of more than 2, wherein, calculates described target component and comprises: according to formula P according to formula P=(C-B)/A
i=(C-B
i)/A calculates the target component P of corresponding described axle in radial direction
i; According to formula C
x=P*S+B calculates described middle levitation position and comprises: according to formula Cx
i=P
i* S+B
icalculate the middle levitation position C of corresponding described axle in radial direction
xi; Comprise using described middle levitation position as control objectives control flow check through the electric current of described magnetic levitation bearing system middle (center) bearing coil: the electric current using multiple described middle levitation position as described control objectives control flow check through described bearing coil.
Further, using described middle levitation position as control objectives control flow check after the electric current of described magnetic levitation bearing system middle (center) bearing coil, described controlling method also comprises: the floating time obtaining described axle; Detect the actual levitation position of described axle; Judge whether the described floating time reaches Preset Time, and judge whether described actual levitation position overlaps with described central position, wherein, described Preset Time represents that described axle moves to the time of described central position from described initial position; And judging that the described floating time reaches described Preset Time, and when described actual levitation position and described central position do not overlap, increase described predetermined amplitude, and recalculate the electric current of described bearing coil, until described actual levitation position overlaps with described central position.
According to an aspect of the present invention, a kind of control gear of magnetic levitation bearing system is provided.
Control gear according to magnetic levitation bearing system of the present invention comprises: the first detection unit, for detecting the initial position of described magnetic levitation bearing system axis, and detects the central position protecting bearing in described magnetic levitation bearing system; First acquiring unit, for obtaining predetermined amplitude and preset times, wherein, described predetermined amplitude represents that described axle moves to from described initial position the amplitude switching levitation position the process of described central position each time, and described preset times represents that described axle moves to from described initial position the total degree switching levitation position the process of described central position; Computing unit, for calculating the middle levitation position in described axle floating process according to described initial position, described central position, described predetermined amplitude and described preset times; And control unit, for using described middle levitation position as control objectives control flow check through the electric current of described magnetic levitation bearing system middle (center) bearing coil.
Further, described computing unit comprises: the first computing module, for calculating the target component switching levitation position according to described initial position, described central position and described preset times; And second computing module, for calculating described middle levitation position according to described initial position, described predetermined amplitude and described target component.
Further, described first computing module is used for calculating described target component according to formula P=(C-B)/A, and wherein, P is described target component, and C is described central position, and B is described initial position, and A is described preset times; Described second computing module is used for according to formula C
x=P*S+B calculates described middle levitation position, wherein, and C
xfor described middle levitation position, S is described predetermined amplitude.
Further, described initial position B comprises the multiple initial position Bs of described axle in radial direction
i, i gets 1 to n successively, and n is the natural number of more than 2, and wherein, described first computing module is used for according to formula P
i=(C-B
i)/A calculates the target component P of corresponding described axle in radial direction
i; Described second computing module is used for according to formula C
xi=P
i* S+B
icalculate the middle levitation position C of corresponding described axle in radial direction
xi; Described control unit comprises: control module, for the electric current using multiple described middle levitation position as described control objectives control flow check through described bearing coil.
Further, described control gear also comprises: second acquisition unit, for obtaining the floating time of described axle; Second detection unit, for detecting the actual levitation position of described axle; Judging unit, for judging whether the described floating time reaches Preset Time, and judge whether described actual levitation position overlaps with described central position, wherein, described Preset Time represents that described axle moves to the time of described central position from described initial position; And increase unit, for judging that at described judging unit the described floating time reaches described Preset Time, and when described actual levitation position and described central position do not overlap, increase described predetermined amplitude, and recalculate the electric current of described bearing coil, until described actual levitation position overlaps with described central position.
According to a further aspect in the invention, provide a kind of magnetic levitation bearing system, this magnetic levitation bearing system comprises the control gear of any one magnetic levitation bearing system that foregoing of the present invention provides.
In the present invention, adopt the initial position detecting described magnetic levitation bearing system axis, and detect the central position protecting bearing in described magnetic levitation bearing system; Obtain predetermined amplitude and preset times, wherein, described predetermined amplitude represents that described axle moves to from described initial position the amplitude switching levitation position the process of described central position each time, and described preset times represents that described axle moves to from described initial position the total degree switching levitation position the process of described central position; The middle levitation position in described axle floating process is calculated according to described initial position, described central position, described predetermined amplitude and described preset times; And using described middle levitation position as control objectives control flow check through the electric current of described magnetic levitation bearing system middle (center) bearing coil.By adopting according to initial position, central position, the number of times of the floating amplitude in floating process and switching levitation position carrys out the electric current of control flow check through bearing coil, achieve and carry out the slow floating of Control Shaft in periodicity floating mode, the mode of direct floating axle in hinge structure, the periodically slowly mode of floating, can be slowed down the movement velocity of axle, and then the protection bearing damage avoiding axle rapid movement crash protection bearing to cause, the protection bearing solving magnetic levitation bearing system in prior art holds flimsy problem, and then reach the reliability improving magnetic levitation bearing system, system is avoided to be damaged, reduce the effect of maintenance cost.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding 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 flow chart of the controlling method of magnetic levitation bearing system according to the embodiment of the present invention; And
Fig. 2 is the schematic diagram of the control gear of magnetic levitation bearing system 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, technological 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 specification 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.
When not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiment 1
According to the embodiment of the present invention, a kind of embodiment of the method that may be used for implementing the application's device embodiment can be provided, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
According to the embodiment of the present invention, provide a kind of controlling method of magnetic levitation bearing system, below concrete introduction done to the controlling method of the magnetic levitation bearing system that the embodiment of the present invention provides:
Fig. 1 is the flow chart of the controlling method of magnetic levitation bearing system according to the embodiment of the present invention, and as shown in Figure 1, the method comprises following step S102 to step S108:
S102: the initial position detecting magnetic levitation bearing system axis; and detect in magnetic levitation bearing system the central position protecting bearing; wherein; the initial position of axle refers in radial directions; axle and the position bottom protecting bearing contacts, the detection of initial position and central position all can detect when magnetic suspension bearing just powers on.
S104: obtain predetermined amplitude and preset times, wherein, predetermined amplitude represents that axle moves to from initial position the amplitude switching levitation position the process of central position each time, and preset times represents that axle moves to from initial position the total degree switching levitation position the process of central position.
S106: calculate the middle levitation position in axle floating process according to initial position, central position, predetermined amplitude and preset times.
S108: the electric current using middle levitation position as control objectives control flow check through magnetic levitation bearing system middle (center) bearing coil, wherein, the size of the electric current of the bearing coil that any one calculating is corresponding with middle levitation position in prior art can be adopted, by the electric current of control flow check through bearing coil, control exerting oneself of bearing.
The controlling method of the magnetic levitation bearing system that the embodiment of the present invention provides, by adopting according to initial position, central position, the number of times of the floating amplitude in floating process and switching levitation position carrys out the electric current of control flow check through bearing coil, achieve and carry out the slow floating of Control Shaft in periodicity floating mode, the mode of direct floating axle in hinge structure, the periodically slowly mode of floating, can be slowed down the movement velocity of axle, and then the protection bearing damage avoiding axle rapid movement crash protection bearing to cause, the protection bearing solving magnetic levitation bearing system in prior art holds flimsy problem, and then reach the reliability improving magnetic levitation bearing system, system is avoided to be damaged, reduce the effect of maintenance cost.
Wherein, in embodiments of the present invention, calculating the mode of the middle levitation position in axle floating process according to initial position, central position, predetermined amplitude and preset times can in the following ways:
First, the target component switching levitation position is calculated according to initial position, central position and preset times, particularly, can calculate target component according to formula P=(C-B)/A, wherein, P is target component, position centered by C, B is initial position, and A is preset times.
Secondly, levitation position in the middle of calculating according to initial position, predetermined amplitude and target component, particularly, can according to formula C
xlevitation position in the middle of=P*S+B calculates, wherein, C
xfor middle levitation position, S is predetermined amplitude.
Preferably, in the controlling method of the magnetic levitation bearing system provided in the embodiment of the present invention, the initial position B detected comprises the multiple initial position Bis of axle in radial direction, i gets 1 to n successively, n is the natural number of more than 2, generally speaking, n gets 4, represents the initial position on the upper and lower, left and right four direction of axle in radial direction respectively.
Correspondingly, when calculating target component and center levitation position, be then according to formula P respectively
i=(C-B
i)/A calculates the target component P of corresponding shaft in radial direction
i, and according to formula C
xi=P
i* S+B
icalculate the middle levitation position C of corresponding shaft in radial direction
xi, wherein, n is got to the situation of 4, is namely calculate the target component of corresponding shaft in four radial direction in upper and lower, left and right, and correspondingly calculates the middle levitation position of corresponding shaft in four radial direction in upper and lower, left and right.Then be specially using middle levitation position as control objectives control flow check through the electric current of magnetic levitation bearing system middle (center) bearing coil: the electric current using multiple middle levitation position as control objectives control flow check through bearing coil, namely, consider the middle levitation position in all directions, and carry out the electric current of control flow check through bearing coil using comprehensive middle levitation position as control objectives.
The controlling method of the magnetic levitation bearing system that the preferred embodiment of the present invention provides; by the multiple initial positions of detection axis in radial direction; and then carry out the electric current of control flow check through bearing coil based on multiple initial position; achieve accurately Control Shaft floating; achieve in the reliability improving magnetic levitation bearing system; avoid on the basis of axle crash protection bearing, also reach the effect improving floating degree of accuracy.
Further, using middle levitation position as control objectives control flow check after the electric current of magnetic levitation bearing system middle (center) bearing coil, the controlling method of the magnetic levitation bearing system that the embodiment of the present invention provides also comprises: the floating time obtaining axle, wherein, the floating time can be timing from after bearing arrangement powers on, until timing to current time accumulate the time; The actual levitation position of detection axis, that is, axle is in the actual levitation position of current time; Judge whether the floating time reaches Preset Time, and judge whether actual levitation position overlaps with central position, wherein, Preset Time represents that axle moves to the time of central position from initial position; Judging that the floating time reaches Preset Time, and when actual levitation position and central position do not overlap, increase predetermined amplitude, and the electric current of calculation bearing coil again, until actual levitation position overlaps with central position, namely, judging that the floating time of shaft is accumulated to Preset Time, when but levitation position does not also reach the central position of final needs suspension, then by large for predetermined amplitude bar, and recalculate the electric current flowing through bearing coil, reach central position to control levitation position.Wherein, when the floating time reaches Preset Time, need the floating time of accumulation to reset, and reclocking.
It should be noted that, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that can add required general hardware platform by software according to the method for above-described embodiment and realize, hardware can certainly be passed through, but in a lot of situation, the former is better mode of execution.Based on such understanding, technological scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
Embodiment 2
According to the embodiment of the present invention, additionally provide a kind of control gear of magnetic levitation bearing system of the controlling method for implementing above-mentioned magnetic levitation bearing system, this control gear is mainly used in the controlling method that execution embodiment of the present invention foregoing provides, and does concrete introduction below to the control gear of the magnetic levitation bearing system that the embodiment of the present invention provides:
Fig. 2 is the schematic diagram of the control gear of magnetic levitation bearing system according to the embodiment of the present invention, as shown in Figure 2, the control gear of the magnetic levitation bearing system that the embodiment of the present invention provides mainly comprises the first detection unit 10, first acquiring unit 20, computing unit 30 and control unit 40, wherein:
First detection unit 10 is for detecting the initial position of magnetic levitation bearing system axis; and detect in magnetic levitation bearing system the central position protecting bearing; wherein; the initial position of axle refers in radial directions; axle and the position bottom protecting bearing contacts, the detection of initial position and central position all can detect when magnetic suspension bearing just powers on.
First acquiring unit 20 is for obtaining predetermined amplitude and preset times, wherein, predetermined amplitude represents that axle moves to from initial position the amplitude switching levitation position the process of central position each time, and preset times represents that axle moves to from initial position the total degree switching levitation position the process of central position.
Computing unit 30 is for calculating the middle levitation position in axle floating process according to initial position, central position, predetermined amplitude and preset times.
Control unit 40 is for the electric current using middle levitation position as control objectives control flow check through magnetic levitation bearing system middle (center) bearing coil, wherein, the size of the electric current of the bearing coil that any one calculating is corresponding with middle levitation position in prior art can be adopted, by the electric current of control flow check through bearing coil, control exerting oneself of bearing.
The control gear of the magnetic levitation bearing system that the embodiment of the present invention provides, by adopting according to initial position, central position, the number of times of the floating amplitude in floating process and switching levitation position carrys out the electric current of control flow check through bearing coil, achieve and carry out the slow floating of Control Shaft in periodicity floating mode, the mode of direct floating axle in hinge structure, the periodically slowly mode of floating, can be slowed down the movement velocity of axle, and then the protection bearing damage avoiding axle rapid movement crash protection bearing to cause, the protection bearing solving magnetic levitation bearing system in prior art holds flimsy problem, and then reach the reliability improving magnetic levitation bearing system, system is avoided to be damaged, reduce the effect of maintenance cost.
Wherein, computing unit 30 mainly comprises the first computing module and the second computing module, first computing module is mainly used in calculating according to initial position, central position and preset times the target component switching levitation position, particularly, target component can be calculated according to formula P=(C-B)/A, wherein, P is target component, position centered by C, B is initial position, and A is preset times.Second computing module is mainly used in calculating middle levitation position according to initial position, predetermined amplitude and target component, particularly, and can according to formula C
xlevitation position in the middle of=P*S+B calculates, wherein, C
xfor middle levitation position, S is predetermined amplitude.
Preferably, in the control gear of the magnetic levitation bearing system provided in the embodiment of the present invention, the initial position B detected comprises the multiple initial position Bs of axle in radial direction
i, i gets 1 to n successively, and n is the natural number of more than 2, and generally speaking, n gets 4, represents the initial position on the upper and lower, left and right four direction of axle in radial direction respectively.
Correspondingly, the first computing module is according to formula Pi=(C-B
i)/A calculates the target component P of corresponding shaft in radial direction
i, the second computing module is according to formula C
xi=P
i* S+B
icalculate the middle levitation position C of corresponding shaft in radial direction
xi, wherein, n is got to the situation of 4, is namely calculate the target component of corresponding shaft in four radial direction in upper and lower, left and right, and correspondingly calculates the middle levitation position of corresponding shaft in four radial direction in upper and lower, left and right.Control unit 40 comprises control module, this control module is used for the electric current using multiple middle levitation position as control objectives control flow check through bearing coil, namely, consider the middle levitation position in all directions, and carry out the electric current of control flow check through bearing coil using comprehensive middle levitation position as control objectives.
The control gear of the magnetic levitation bearing system that the preferred embodiment of the present invention provides; by the multiple initial positions of detection axis in radial direction; and then carry out the electric current of control flow check through bearing coil based on multiple initial position; achieve accurately Control Shaft floating; achieve in the reliability improving magnetic levitation bearing system; avoid on the basis of axle crash protection bearing, also reach the effect improving floating degree of accuracy.
Further, control gear also comprises second acquisition unit, the second detection unit, judging unit and increase unit, wherein, second acquisition unit is for obtaining the floating time of axle, the floating time can be timing from after bearing arrangement powers on, until timing to current time accumulate the time; Second detection unit is used for the actual levitation position of detection axis, that is, axle is in the actual levitation position of current time; Judging unit for judging whether the floating time reaches Preset Time, and judges whether actual levitation position overlaps with central position, and wherein, Preset Time represents that axle moves to the time of central position from initial position; Increase unit to be used for judging that the floating time reaches Preset Time at judging unit, and when actual levitation position and central position do not overlap, increase predetermined amplitude, and the electric current of calculation bearing coil again, until actual levitation position overlaps with central position, namely, judging that the floating time of shaft is accumulated to Preset Time, when but levitation position does not also reach the central position of final needs suspension, then by large for predetermined amplitude bar, and recalculate the electric current flowing through bearing coil, reach central position to control levitation position.Wherein, when the floating time reaches Preset Time, need the floating time of accumulation to reset, and reclocking.
In addition, the embodiment of the present invention additionally provides a kind of magnetic levitation bearing system, this magnetic levitation bearing system can be the system of the controlling method of the magnetic levitation bearing system that any one application embodiment of the present invention foregoing provides, and also can be the control gear comprising any one magnetic levitation bearing system that embodiment of the present invention foregoing provides.
From above description; can find out; present invention achieves and carry out the slow floating of Control Shaft in periodicity floating mode; the mode of direct floating axle in hinge structure, the periodically slowly mode of floating, the movement velocity of the axle that can slow down; and then the protection bearing damage avoiding axle rapid movement crash protection bearing to cause; reach the reliability improving magnetic levitation bearing system, avoid system to be damaged, reduce the effect of maintenance cost.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general computing device, they can concentrate on single computing device, or be distributed on network that multiple computing device forms, alternatively, they can realize with the executable program-code of computing device, thus, they can be stored and be performed by computing device in the storage device, or they are made into each integrated circuit module respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a controlling method for magnetic levitation bearing system, is characterized in that, comprising:
Detect the initial position of described magnetic levitation bearing system axis, and detect the central position protecting bearing in described magnetic levitation bearing system;
Obtain predetermined amplitude and preset times, wherein, described predetermined amplitude represents that described axle moves to from described initial position the amplitude switching levitation position the process of described central position each time, and described preset times represents that described axle moves to from described initial position the total degree switching levitation position the process of described central position;
The middle levitation position in described axle floating process is calculated according to described initial position, described central position, described predetermined amplitude and described preset times; And
Using described middle levitation position as control objectives control flow check through the electric current of described magnetic levitation bearing system middle (center) bearing coil.
2. controlling method according to claim 1, is characterized in that, comprises according to the middle levitation position that described initial position, described central position, described predetermined amplitude and described preset times calculate in described axle floating process:
The target component switching levitation position is calculated according to described initial position, described central position and described preset times; And
Described middle levitation position is calculated according to described initial position, described predetermined amplitude and described target component.
3. controlling method according to claim 2, is characterized in that:
Calculate described target component according to formula P=(C-B)/A, wherein, P is described target component, and C is described central position, and B is described initial position, and A is described preset times;
According to formula C
x=P*S+B calculates described middle levitation position, wherein, and C
xfor described middle levitation position, S is described predetermined amplitude.
4. controlling method according to claim 3, is characterized in that, described initial position B comprises the multiple initial position Bs of described axle in radial direction
i, i gets 1 to n successively, and n is the natural number of more than 2, wherein,
Calculate described target component according to formula P=(C-B)/A to comprise: according to formula P
i=(C-B
i)/A calculates the target component P of corresponding described axle in radial direction
i;
According to formula C
x=P*S+B calculates described middle levitation position and comprises: according to formula C
xi=P
i* S+B
icalculate the middle levitation position C of corresponding described axle in radial direction
xi;
Comprise using described middle levitation position as control objectives control flow check through the electric current of described magnetic levitation bearing system middle (center) bearing coil: the electric current using multiple described middle levitation position as described control objectives control flow check through described bearing coil.
5. controlling method according to claim 1, is characterized in that, using described middle levitation position as control objectives control flow check after the electric current of described magnetic levitation bearing system middle (center) bearing coil, described controlling method also comprises:
Obtain the floating time of described axle;
Detect the actual levitation position of described axle;
Judge whether the described floating time reaches Preset Time, and judge whether described actual levitation position overlaps with described central position, wherein, described Preset Time represents that described axle moves to the time of described central position from described initial position; And
Judging that the described floating time reaches described Preset Time, and when described actual levitation position and described central position do not overlap, increase described predetermined amplitude, and recalculate the electric current of described bearing coil, until described actual levitation position overlaps with described central position.
6. a control gear for magnetic levitation bearing system, is characterized in that, comprising:
First detection unit, for detecting the initial position of described magnetic levitation bearing system axis, and detects the central position protecting bearing in described magnetic levitation bearing system;
First acquiring unit, for obtaining predetermined amplitude and preset times, wherein, described predetermined amplitude represents that described axle moves to from described initial position the amplitude switching levitation position the process of described central position each time, and described preset times represents that described axle moves to from described initial position the total degree switching levitation position the process of described central position;
Computing unit, for calculating the middle levitation position in described axle floating process according to described initial position, described central position, described predetermined amplitude and described preset times; And
Control unit, for using described middle levitation position as control objectives control flow check through the electric current of described magnetic levitation bearing system middle (center) bearing coil.
7. control gear according to claim 6, is characterized in that, described computing unit comprises:
First computing module, for calculating the target component switching levitation position according to described initial position, described central position and described preset times; And
Second computing module, for calculating described middle levitation position according to described initial position, described predetermined amplitude and described target component.
8. control gear according to claim 7, is characterized in that:
Described first computing module is used for calculating described target component according to formula P=(C-B)/A, and wherein, P is described target component, and C is described central position, and B is described initial position, and A is described preset times;
Described second computing module is used for according to formula C
x=P*S+B calculates described middle levitation position, wherein, and C
xfor described middle levitation position, S is described predetermined amplitude.
9. control gear according to claim 8, is characterized in that, described initial position B comprises the multiple initial position Bs of described axle in radial direction
i, i gets 1 to n successively, and n is the natural number of more than 2, wherein,
Described first computing module is used for according to formula P
i=(C-B
i)/A calculates the target component P of corresponding described axle in radial direction
i;
Described second computing module is used for according to formula C
xi=P
i* S+B
icalculate the middle levitation position C of corresponding described axle in radial direction
xi;
Described control unit comprises: control module, for the electric current using multiple described middle levitation position as described control objectives control flow check through described bearing coil.
10. control gear according to claim 6, is characterized in that, described control gear also comprises:
Second acquisition unit, for obtaining the floating time of described axle;
Second detection unit, for detecting the actual levitation position of described axle;
Judging unit, for judging whether the described floating time reaches Preset Time, and judge whether described actual levitation position overlaps with described central position, wherein, described Preset Time represents that described axle moves to the time of described central position from described initial position; And
Increase unit, for judging that at described judging unit the described floating time reaches described Preset Time, and when described actual levitation position and described central position do not overlap, increase described predetermined amplitude, and recalculate the electric current of described bearing coil, until described actual levitation position overlaps with described central position.
11. 1 kinds of magnetic levitation bearing systems, is characterized in that, comprise the control gear of the magnetic levitation bearing system according to any one of claim 6 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410226429.2A CN105202023B (en) | 2014-05-26 | 2014-05-26 | Magnetic levitation bearing system and its control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410226429.2A CN105202023B (en) | 2014-05-26 | 2014-05-26 | Magnetic levitation bearing system and its control method and device |
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| CN107387563A (en) * | 2017-09-09 | 2017-11-24 | 珠海格力电器股份有限公司 | Magnetic suspension bearing control method and device |
| CN110345158A (en) * | 2019-07-22 | 2019-10-18 | 珠海格力电器股份有限公司 | Bearing control method and device, storage medium and processor |
| CN113280041A (en) * | 2021-05-20 | 2021-08-20 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and control method and device thereof, storage medium and processor |
| CN113700741A (en) * | 2021-08-26 | 2021-11-26 | 珠海格力电器股份有限公司 | Magnetic suspension bearing system, control method and device thereof and storage medium |
| CN114607702A (en) * | 2022-03-15 | 2022-06-10 | 珠海格力电器股份有限公司 | Control method and device of magnetic suspension system, magnetic suspension system and storage medium |
| CN114738385A (en) * | 2022-04-28 | 2022-07-12 | 珠海格力电器股份有限公司 | Magnetic suspension bearing system, control method and device thereof and storage medium |
| CN115059689A (en) * | 2022-06-29 | 2022-09-16 | 珠海格力电器股份有限公司 | Rotor floating control method and device, storage medium and bearing controller |
| CN116576147A (en) * | 2023-07-12 | 2023-08-11 | 广东美的暖通设备有限公司 | Method and device for determining magnetic suspension protection boundary and centrifugal compressor |
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| CN110345158A (en) * | 2019-07-22 | 2019-10-18 | 珠海格力电器股份有限公司 | Bearing control method and device, storage medium and processor |
| CN113280041A (en) * | 2021-05-20 | 2021-08-20 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and control method and device thereof, storage medium and processor |
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| CN114607702A (en) * | 2022-03-15 | 2022-06-10 | 珠海格力电器股份有限公司 | Control method and device of magnetic suspension system, magnetic suspension system and storage medium |
| CN114607702B (en) * | 2022-03-15 | 2023-02-24 | 珠海格力电器股份有限公司 | Control method and device of magnetic suspension system, magnetic suspension system and storage medium |
| CN114738385A (en) * | 2022-04-28 | 2022-07-12 | 珠海格力电器股份有限公司 | Magnetic suspension bearing system, control method and device thereof and storage medium |
| CN115059689A (en) * | 2022-06-29 | 2022-09-16 | 珠海格力电器股份有限公司 | Rotor floating control method and device, storage medium and bearing controller |
| CN115059689B (en) * | 2022-06-29 | 2024-03-15 | 珠海格力电器股份有限公司 | Rotor floating control method and device, storage medium and bearing controller |
| CN116576147A (en) * | 2023-07-12 | 2023-08-11 | 广东美的暖通设备有限公司 | Method and device for determining magnetic suspension protection boundary and centrifugal compressor |
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