CN109630546A - Magnetic levitation bearing system control method, device and magnetic suspension bearing control system - Google Patents

Magnetic levitation bearing system control method, device and magnetic suspension bearing control system Download PDF

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Publication number
CN109630546A
CN109630546A CN201910128601.3A CN201910128601A CN109630546A CN 109630546 A CN109630546 A CN 109630546A CN 201910128601 A CN201910128601 A CN 201910128601A CN 109630546 A CN109630546 A CN 109630546A
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China
Prior art keywords
bearing
floating
magnetic levitation
transverse
information
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CN201910128601.3A
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CN109630546B (en
Inventor
胡叨福
贺永玲
李雪
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • 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
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
    • 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
    • F16C32/0474—Active magnetic bearings for rotary movement
    • F16C32/0489—Active magnetic bearings for rotary movement with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

This application involves a kind of magnetic levitation bearing system control method, device and magnetic suspension bearing control systems, comprising: receives floating axle instruction；It is instructed according to floating axle, sends floating information to each bearing of magnetic levitation bearing system step by step, floating information is powered on for controlling each bearing；When each bearing is powered on all in accordance with the completion of floating information, rotation control signal is sent to the shaft of magnetic levitation bearing system, rotation control signal is for controlling the shaft rotation.Load sudden change amplitude when powering on each time is significantly reduced in such a way that above-mentioned substep powers on; so that the variable quantity of electric current is smaller in the case where load variation; avoid the occurrence of the excessive triggering overcurrent protection of curent change; the case where causing magnetic levitation bearing system floating axle to fail, has stronger functional reliability compared with traditional magnetic levitation bearing system control method.

Description

Magnetic levitation bearing system control method, device and magnetic suspension bearing control system
Technical field
This application involves technical field of bearings, more particularly to a kind of magnetic levitation bearing system control method, device and magnetic Suspension bearing control system.
Background technique
Magnetic suspension bearing (Magnetic Bearing) system be it is a kind of using magneticaction by rotor suspension in aerial, make There is no the bearing arrangement of Mechanical Contact between rotor and stator.A set of magnetic levitation bearing system generally uses two radial direction magnetic bearings Come to carry out suspension support to shaft with an axial magnetic bearing, so that shaft is run in oil-free, friction free environment, there is height The advantages that speed, small energy height and noise.
Magnetic levitation bearing system passes through DC power supply generally as bearing controller power supply, and high-power magnetic-suspension bearing system In system, shaft is all universal heavier.It therefore, is that bearing is powered to realize floating axle by traditional magnetic levitation bearing system control method During, since load sudden change causes the output electric current of DC power supply bigger, it is easy triggering power supply overcurrent protection, so that turning Axis cannot reliable floating.Traditional magnetic levitation bearing system control method haves the shortcomings that functional reliability is low.
Summary of the invention
Based on this, it is necessary to for the low problem of traditional magnetic levitation bearing system control method functional reliability, provide A kind of magnetic levitation bearing system control method, device and magnetic suspension bearing control system.
A kind of magnetic levitation bearing system control method, which comprises receive floating axle instruction；Referred to according to the floating axle It enables, sends floating information to each bearing of magnetic levitation bearing system step by step, the floating information is for controlling each bearing Electricity；When each bearing is powered on all in accordance with floating information completion, the shaft of Xiang Suoshu magnetic levitation bearing system is sent Rotation control signal, the rotation control signal is for controlling the shaft rotation.
A kind of magnetic levitation bearing system control device, described device includes: floating axle command reception module, for receiving floating axle Instruction；Upper electric control module is sent to each bearing of the magnetic levitation bearing system step by step for being instructed according to the floating axle Floating information, the floating information are powered on for controlling each bearing；Control module is rotated, for working as each equal root of bearing When powering on according to floating information completion, the shaft of Xiang Suoshu magnetic levitation bearing system sends rotation control signal, the rotation Control signal is for controlling the shaft rotation.
A kind of magnetic suspension bearing control system, comprising: magnetic levitation bearing system and magnetically suspended bearing, the magnetcisuspension Floating bearing controller connects the magnetic levitation bearing system, and the magnetically suspended bearing is instructed for receiving floating axle, according to The shaft rotation of above-mentioned method control magnetic levitation bearing system.
Above-mentioned magnetic levitation bearing system control method, device and magnetic suspension bearing control system, when receiving floating axle instruction, Substep sends floating information to each bearing of magnetic levitation bearing system, thus realize the substep power on operation to each bearing, When each bearing is completed to power on all in accordance with floating axle instruction, control shaft rotation works.The side powered on by above-mentioned substep Formula significantly reduces load sudden change amplitude when powering on each time so that load variation in the case where electric current variable quantity compared with It is small, it is and traditional the case where avoiding the occurrence of the excessive triggering overcurrent protection of curent change, magnetic levitation bearing system floating axle is caused to fail Magnetic levitation bearing system control method, which is compared, has stronger functional reliability.
Detailed description of the invention
Fig. 1 is magnetic levitation bearing system control method flow diagram in an embodiment；
Fig. 2 is the current waveform schematic diagram of magnetic levitation bearing system control method in an embodiment；
Fig. 3 is the current waveform schematic diagram of magnetic levitation bearing system control method in another embodiment；
Fig. 4 is magnetic levitation bearing system control method flow diagram in another embodiment；
Fig. 5 is magnetic levitation bearing system control method flow diagram in another embodiment；
Fig. 6 is magnetic levitation bearing system control flow chart in an embodiment；
Fig. 7 is magnetic levitation bearing system control method flow diagram in another embodiment；
Fig. 8 is magnetic levitation bearing system control method flow diagram in another embodiment；
Fig. 9 is magnetic levitation bearing system controling device structure diagram in an embodiment；
Figure 10 is magnetic levitation bearing system controling device structure diagram in another embodiment；
Figure 11 is magnetic suspension bearing control system architecture schematic diagram in an embodiment；
Figure 12 is magnetic suspension bearing control system architecture schematic diagram in another embodiment；
Figure 13 is magnetic levitation bearing system structural schematic diagram in an embodiment；
Figure 14 is magnetic suspension bearing control system architecture schematic diagram in another embodiment；
Figure 15 is magnetic suspension bearing control system architecture schematic diagram in another embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to herein Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to disclosure of this application more saturating It is thorough comprehensive.
Referring to Fig. 1, a kind of magnetic levitation bearing system control method, including step S100, step S200 and step S300.
Step S100 receives floating axle instruction.Specifically, floating axle instruction is that control magnetic levitation bearing system powers on carry out work The instruction of work.The type of floating axle instruction is not uniquely, for example, in one embodiment, setting on magnetically suspended bearing It is equipped with and starts switch, when user needs to work using magnetic levitation bearing system, will directly start switch unlatching, In the present embodiment, floating axle instruction is generated enabling signal when user starts switch, magnetic levitation bearing system reception It indicates to receive corresponding floating axle instruction to enabling signal.It is appreciated that in other embodiments, due to magnetic suspension bearing system System be by powering on the device realized to the suspension of shaft and rotation control for bearing, corresponding floating axle instruction can also be with Power supply signal transmitted by the power supply device that magnetically suspended bearing is connected.When user needs magnetic levitation bearing system to carry out When work, the power switch of power supply device is set to by opening, power switch can send power supply to magnetically suspended bearing The instruction of signal, as floating axle.It should be pointed out that floating axle instruction can also be other types of signal, as long as it is possible to notify that magnetic Suspension bearing controller carries out floating axle control, realizes the operation of magnetic levitation bearing system.
Step S200, instructs according to floating axle, sends floating information to each bearing of magnetic levitation bearing system step by step.Specifically Ground, floating information are powered on for controlling each bearing.Substep sends floating information to each bearing of magnetic levitation bearing system, i.e., Floating information is sent respectively to each bearing for a point different batch, for example, in two steps to each axis of magnetic levitation bearing system Holding transmission floating information (sending floating information to each bearing in two batches) can be first to a part of bearing transmission floating Information, when this split bearing is powered on according to the completion of floating information and then sends floating information, control to another part bearing Another part bearing processed is powered on.When magnetically suspended bearing receives floating axle instruction, first according to floating axle instruction Floating information is sent to a part of bearing of magnetic levitation bearing system, a part of bearing is controlled and first powers on and work.When the portion After two-part bearing completion powers on, magnetically suspended bearing sends floating information to other bearings again, completes other bearings Power on operation, after each bearing is completed to power on, due to the effect of electromagnetic force, the shaft of magnetic levitation bearing system will be located In suspended state.
It is appreciated that difference can be divided according to number of bearings and user demand etc. in a set of magnetic levitation bearing system Step number to each bearing send floating information, complete working on power for all bearings.It is appreciated that in one embodiment, Floating information is current signal, when magnetically suspended bearing receives floating axle instruction, is powered first to a part of bearing, Then it is powered to other bearings, the substep floating axle operation of magnetic levitation bearing system can be realized.Referring to Fig. 2, being an embodiment The current waveform figure of middle magnetic levitation bearing system control method, as can be seen from the figure when magnetically suspended bearing control is each When bearing powers on the floating axle control for realizing shaft simultaneously, due to load excessive, the immediate current of generation can be more than overcurrent early warning pair The current value answered, is easy overcurrent protection of setting out, and the floating axle of magnetic levitation bearing system is caused to control failure.Referring to Fig. 3, being this reality The corresponding current waveform figure of substep control strategy in example is applied, it is seen that under the control of substep floating axle, the variation meeting of electric current It is smaller, do not exceed the corresponding current value of overcurrent early warning.
Step S300 is sent out when each bearing is powered on all in accordance with the completion of floating information to the shaft of magnetic levitation bearing system Send rotation control signal.Specifically, rotation control signal is for controlling shaft rotation.When magnetically suspended bearing is according to floating axle After instruction substep powers on the completion of each bearing, under the action of electromagnetic force, the shaft of magnetic levitation bearing system will be in Suspended state completes corresponding work, at this time magnetically suspended bearing in order to enable the shaft of magnetic levitation bearing system rotates Rotation control signal, control shaft rotation will be sent to shaft.It is appreciated that judging that each bearing is complete all in accordance with floating information At powering on, it can be magnetically suspended bearing oneself and judged according to the collected data, be also possible to external device (ED) progress Data acquisition and judgement complete the signal powered on i.e. to magnetically suspended bearing one after obtaining the information for completing to power on later It can.
It should be pointed out that in one embodiment, magnetically suspended bearing is step by step to each of magnetic levitation bearing system When a bearing sends floating information, after can be every transmission for carrying out a floating information, can all carry out once whether completing The judgement powered on, specifically judgment method is to obtain after magnetically suspended bearing sends floating information to corresponding bearing The suspension precision of the shaft of magnetic levitation bearing system is taken to be judged, when the suspension precision of shaft meets corresponding default suspension essence Degree can indicate that corresponding shaft completion powers on.In another embodiment, it can also be magnetically suspended bearing substep To each bearing of magnetic levitation bearing system send floating information when, only after the transmission of final step floating information just into The judgement whether each bearing of row powers on all in accordance with the completion of floating information.That is, being sent carrying out substep to each bearing As long as after the floating information of the corresponding bearing of previous step is sent when floating information, continuing directly to of corresponding bearing in next step Floating information is sent, and until all bearings receive floating information, magnetically suspended bearing can just obtain the outstanding of shaft Floating precision, judges whether to power on completion according to suspension precision and default suspension precision.
Above-mentioned magnetic levitation bearing system control method is significantly reduced by way of powering on step by step when powering on each time Load sudden change amplitude so that load variation in the case where electric current variable quantity it is smaller, avoid the occurrence of the excessive triggering of curent change Overcurrent protection, cause magnetic levitation bearing system floating axle fail the case where, compared with traditional magnetic levitation bearing system control method With stronger functional reliability.
In one embodiment, magnetic levitation bearing system is suspension of five-freedom degree magnetic bearing arrangement, i.e. magnetic suspension bearing system The bearing of system includes the first transverse bearing, the second transverse bearing and axial bearing, and step S200 includes being instructed according to floating axle, is divided to two It walks to the first transverse bearing, the second transverse bearing and axial bearing and sends floating information, or instructed according to floating axle, point three steps are to the One transverse bearing, the second transverse bearing and axial bearing send floating information.
Specifically, in the present embodiment, magnetic levitation bearing system includes two transverse bearings and an axial bearing, wherein Two transverse bearings are located at the opposite end of shaft, respectively the first transverse bearing and the second transverse bearing.For this reality Magnetic levitation bearing system in example is applied, 5 freedom degrees, the i.e. X of the first transverse bearing are classified as according to the freedom degree of different bearings Freedom degree and Y freedom degree, the X freedom degree of the second transverse bearing and the one degree of freedom of Y freedom degree and axial bearing.In basis Floating axle instruction can be first when sending floating information to the first transverse bearing, the second transverse bearing and axial bearing in two steps Floating information is sent to the first transverse bearing or the second transverse bearing, when the first transverse bearing or the second transverse bearing are according to floating Information completes power on operation and then sends upper power information to another transverse bearing and axial bearing, realizes another radial direction Bearing and axial bearing power on, i.e., realize the floating control of two freedom degrees first, then realize the floating of three degree of freedom Control reduces instantaneous current value to reach the control of substep floating, realizes that magnetic levitation bearing system stablizes the purpose of floating control. In another embodiment, it can also be that bearing sends floating information in the axial direction first, realize the floating operation of one degree of freedom, Then floating information is sent simultaneously to the first transverse bearing and the second transverse bearing, control the first transverse bearing and the second radial axle That holds powers on, and realizes the floating control of four freedom degrees, same to have reduction instantaneous current value, realizes that magnetic levitation bearing system is steady Determine the function of floating control.It is appreciated that in other embodiments, for other type magnetic suspension with different number of bearings Bearing arrangement can be realized by above-mentioned similar method and carry out upper electric control to different bearings in two steps, to reduce moment Current value realizes that magnetic levitation bearing system stablizes the function of floating control.
Divide three steps to send floating information to the first transverse bearing, the second transverse bearing and axial bearing, as divides three steps real The power on operation of existing magnetic levitation bearing system, the first transverse bearing, the second transverse bearing and axial bearing power on individually It carries out, to realize reduction instantaneous current value, magnetic levitation bearing system is made to stablize the function of floating.It is appreciated that magnetic suspension bearing The step of controller sends floating information to the first transverse bearing, the second transverse bearing and axial bearing is not uniquely, only It can be realized powering on completion and then send floating information to next bearing in a upper bearing, realize that first is radial The electric control upper respectively of bearing, the second transverse bearing and axial bearing.Can realize that axial bearing is corresponding first Then the floating of one degree of freedom realizes the floating of corresponding two freedom degrees of the first transverse bearing, finally realize that second is radial The floating etc. of corresponding two freedom degrees of bearing.In other embodiments, for other type magnetic with different number of bearings Suspension bearing system can realize that point three steps carry out upper electric control to different bearings by above-mentioned similar method, to reduce Instantaneous current value realizes that magnetic levitation bearing system stablizes the function of floating control.Further, for greater number of axis The magnetic levitation bearing system held can also be that a point other step numbers are controlled, for example, four steps, five steps etc., as long as reduction can be reached Instantaneous current value realizes that magnetic levitation bearing system stablizes the effect of floating control.
In one embodiment, referring to Fig. 4, step S200 includes step S210 and step S220.
Step S210, instructs according to floating axle, while sending floating information to the first transverse bearing and axial bearing.Specifically Ground, can when sending floating information to magnetic levitation bearing system in two steps for the magnetic levitation bearing system with 5DOF To be to send floating information, the first transverse bearing to the first transverse bearing and axial bearing by magnetically suspended bearing first After receiving floating information with axial bearing, the power on operation of transverse bearing and axial bearing is realized respectively, i.e., is realized first The floating of three degree of freedom controls.
Step S220, it is radial to second after the first transverse bearing and axial bearing are powered on according to the completion of floating information Bearing sends floating information.After the first transverse bearing and axial bearing are powered on according to the completion of floating information, magnetic suspension bearing Controller sends floating information to the second transverse bearing, and the second transverse bearing realizes the second transverse bearing according to floating information Power on operation realizes the floating control of two freedom degrees.After the second transverse bearing also is completed to power on, that is, indicate magnetic suspension shaft It holds controller and completes the floating control of magnetic levitation bearing system, as long as passing through magnetically suspended bearing to magnetic suspension bearing system The shaft of system, which sends corresponding control signal, can be completed the control operation of the rotation to shaft.In the present embodiment, it realizes first The floating of three degree of freedom controls, and then realizes the floating control of two freedom degrees, significantly reduces magnetic levitation bearing system Load when floating controls has the advantages that operation is simplest in order to realize the stabilization floating of magnetic levitation bearing system.
Referring to Fig. 5, in one embodiment, step S220 includes step S221, step S222 and step S223.
Step S221 obtains the first suspension precision of the shaft of magnetic levitation bearing system.Specifically, when the first transverse bearing After being powered on axial bearing according to floating information, under the action of electromagnetic force, magnetic levitation bearing system can be made corresponding It suspends.Magnetic levitation bearing system is additionally provided with displacement sensor, when shaft suspends under the action of electromagnetic force, Displacement sensor can acquire the displacement information of shaft, be denoted as the first suspension precision, and displacement sensor can will acquire To the first suspension precision be sent to magnetically suspended bearing and analyzed, to judge in the first transverse bearing and axial axis It holds when powering on, if so that shaft rises floating to corresponding position.In other embodiments, it can also be and turned by sensor detection Axle offset refers to the range information of equilbrium position, which is denoted as the first suspension precision, and obtain first is suspended Precision is sent to magnetically suspended bearing and is analyzed, and judges whether the first suspension precision meets the first default suspension precision (namely judging the range information collected whether less than the first default suspension precision).It should be pointed out that suspension precision Acquisition and judgment method be not it is unique, be not limited in method shown in above-mentioned two embodiment, as long as can close The first transverse bearing of expression and axial bearing of reason power on front and back, the change in location situation of shaft phase.It is appreciated that displacement The type of sensor is not that uniquely, can be current vortex sensor, inductance type transducer, capacitance sensor and photoelectric sensing Device etc., as long as the change in location situation of shaft can be indicated reasonably.
Step S222 sends floating to the second transverse bearing when the first suspension precision meets the first default suspension precision Information.Specifically, it indicates to have completed to power on when the first suspension precision meets the first default suspension precision, that is, in floating The first transverse bearing and axial bearing power on success under the action of information, are able to carry out normal work.Magnetically suspended bearing It is preset with the corresponding numerical value of the first default suspension precision, when the first transverse bearing and axial bearing power on, sensor is collected Corresponding first suspension precision can be sent to magnetically suspended bearing and preset with first by the corresponding first suspension precision of shaft Suspension precision compares and analyzes, to judge whether shaft is suspending stabilized.It is deviated and is joined as shaft using the first default suspension precision It examines for the distance of equilbrium position and the first default suspension precision be 10um, when collected shaft deflection reference equilbrium position When range information is less than 10um, that is, illustrate that the first suspension precision meets the first default suspension precision, magnetic suspension bearing controls at this time Device sends floating information to the second transverse bearing, and the second transverse bearing of control, which powers on, to be worked.
Step S223, when the first suspension precision is unsatisfactory for the first default suspension precision, alert.Specifically, It is that the first transverse bearing and axial bearing power on failure, that is, do not have that first suspension precision, which is unsatisfactory for the first default suspension precision, There is completion to power on.When sensor send the first suspension precision be unsatisfactory for the first default suspension precision, illustrate in the first radial axle It holds in the case where being powered on axial bearing, shaft is not made to be suspended to corresponding position.If magnetically suspended bearing continues Floating axle instruction is sent to the second transverse bearing, executes subsequent operation, will be unable to guarantee the safe and stable of magnetic levitation bearing system Operation, magnetically suspended bearing will control alarm alert and inform user at this time, in order to which user adopts in time Take corresponding solution.Similarly, using the first default suspension precision as the distance and first of shaft deflection reference equilbrium position For default suspension precision is 10um, when the range information of collected shaft deflection reference equilbrium position is greater than or equal to 10um When, magnetically suspended bearing will alert informing user.It is appreciated that in other embodiments, can also be When the first suspension precision is unsatisfactory for the first default suspension precision, magnetically suspended bearing is directly cut off the power, and interrupts magnetcisuspension The operation of floating bearing arrangement, to guarantee the safety of magnetic levitation bearing system.Pass through turning after powering on to magnetic levitation bearing system Shaft position is analyzed and determined, when shaft is not suspended to corresponding position, can be made a response, be effectively improved in time The operational reliability of magnetic levitation bearing system.It should be pointed out that the type of alarm is not that uniquely, can be voice reporting Alert device or other types of alarm per family may be used as long as the information that shaft can not be suspended into corresponding position is told to use.Into One step, the setting position of alarm is not that uniquely, can be set inside magnetic levitation bearing system, be also possible to list yet Only warning device per family may be used as long as the information that shaft can not be suspended into corresponding position is told to use.
Further, in one embodiment, please continue to refer to Fig. 5, step S300 include step S310, step S320 and Step S330.
Step S310 obtains the second suspension precision of shaft.Specifically, with above-mentioned first transverse bearing and axial bearing into After row powers on, the first suspension precision of acquisition is similar, and the suspension precision of shaft is obtained by sensor, then default outstanding with second Floating precision compares and analyzes, and after judging that the second transverse bearing powers on, whether shaft can reach corresponding suspension Position.Detailed process is similar to the above embodiments, and details are not described herein.
Step S320 sends rotation control signal to shaft when the second suspension precision meets the second default suspension precision. Similarly, similar to the above embodiments, when the second suspension precision meets the second default suspension precision, magnetically suspended bearing is straight It connects to shaft and sends rotating signal, control shaft rotation, details are not described herein.It should be pointed out that in one embodiment In, the second default suspension precision is numerical value more higher than the precision of the first suspension precision, is deviateed using judgment criteria as shaft and is referred to For the distance of equilbrium position, the first default suspension precision setting is 10um, and the second default suspension precision, which can be set, to be less than 10um, such as 8um etc..
Step S330, when the second suspension precision is unsatisfactory for the second default suspension precision, alert.
Likewise, illustrating when the second suspension precision that sensor is sent is unsatisfactory for the second default suspension precision in the second diameter In the case where powering on to bearing, shaft is not made to be suspended to corresponding position.It is reported at this point, magnetically suspended bearing will issue Alert information informs user, to guarantee the safe and stable operation of magnetic levitation bearing system.In the present embodiment, when second step controls When second transverse bearing powers on, the detection of shaft suspension precision is also carried out, judges whether shaft is suspending stabilized, further improves The operational reliability of magnetic levitation bearing system.Referring to Fig. 6, in the embodiment shown in fig. 6, the first step is first while in the axial direction Bearing and the first transverse bearing send floating information, realize the floating of three degree of freedom, and send floating information and also sentence later Successfully (i.e. whether floating axle is stablized) is powered on when disconnected；When power on successfully after to the second transverse bearing send floating information, realize The even floating of freedom degree, and send floating information and judge whether that floating axle is stablized again later, floating axle stabilization is rotated again The transmission of information.It, can alert prompting user if there is the unstable situation of floating axle when judging twice.
In one embodiment, referring to Fig. 7, step S200 further includes step S230 and step S240.
Step S230, instructs according to floating axle, while sending floating information to the first transverse bearing and the second transverse bearing.? In the present embodiment, magnetically suspended bearing sends floating information to the first transverse bearing and the second transverse bearing simultaneously first, Control the first transverse bearing and after the second transverse bearing powers on.It should be pointed out that with real in two steps in above-described embodiment Existing floating axle control is similar, and after the first transverse bearing and the second transverse bearing power on, sensor can equally acquire the outstanding of shaft Floating precision, and the suspension precision collected is compared and analyzed with corresponding default suspension precision, when suspension precision is discontented When the corresponding default suspension precision of foot, alert is equally understood.
Step S240, after the first transverse bearing and the second transverse bearing are powered on according to the completion of floating information, in the axial direction Bearing sends floating information.
Specifically, when the first transverse bearing and the second transverse bearing all in accordance with floating information realization power on operation and then Bearing sends floating information in the axial direction, and control axial bearing powers on, and controls behaviour to the floating axle of magnetic levitation bearing system to realize Make.I.e. in the present embodiment, corresponding two freedom degrees of the first transverse bearing and the second transverse bearing corresponding two are realized first The floating axle of a freedom degree controls, and then realizes the floating axle control of the corresponding freedom degree of axial bearing.Likewise, in one embodiment In, it is similar with the floating axle of the realization in two steps control in above-described embodiment, after axial bearing is powered on, also it will do it primary The detection of shaft suspension precision operates, and to judge whether to power on success, details are not described herein for concrete operations, to further mention The operational reliability of high magnetic suspension bearing arrangement.
In one embodiment, referring to Fig. 8, step S200 further includes step S250, step S260 and step S270.
Step S250, instructs according to floating axle, sends floating information to the first transverse bearing.Specifically, the present embodiment point three Step carries out the floating axle control of magnetic levitation bearing system, and magnetically suspended bearing first controls the first radial axle according to floating information The floating control of corresponding two freedom degrees of the first transverse bearing is realized in the floating operation held.Likewise, in one embodiment In, after the first transverse bearing is powered on, the suspension precision and preset suspension precision of shaft are also acquired by sensor It compares and analyzes, to realize control operation or alert, specific operation process and above-described embodiment in next step In the floating axle of realization in two steps control it is similar, details are not described herein.
Step S260, after the first transverse bearing is powered on according to the completion of floating information, bearing sends floating letter in the axial direction Breath.Specifically, after the first transverse bearing powers on completion, bearing sends floating information to magnetically suspended bearing in the axial direction, It controls axial bearing and completes power on operation, i.e. the floating axle control of the corresponding one degree of freedom of realization axial bearing.It should be understood that It is, in one embodiment, after axial bearing is complete to be powered on, also by the suspension precision of sensor acquisition shaft and in advance If suspension precision compare and analyze, thus realize in next step control operation or alert, specific operation process Similar with the floating axle of the realization in two steps control in above-described embodiment, details are not described herein.
Step S270 sends floating letter to the second transverse bearing after axial bearing is powered on according to the completion of floating information Breath.Specifically, after axial bearing powers on completion, bearing sends floating information, control to magnetically suspended bearing in the axial direction Second transverse bearing completes power on operation, that is, realizes the floating axle control of corresponding two freedom degrees of the second transverse bearing.It should refer to Out, in one embodiment, after the second transverse bearing is powered on, the suspension essence of shaft is also acquired by sensor Degree is compared and analyzed with preset suspension precision, thus realize control operation or alert in next step, it is specific to grasp It is similar with the floating axle of the realization in two steps control in above-described embodiment to make process, details are not described herein.First is realized by point three steps The power on operation of transverse bearing, the second transverse bearing and axial bearing more significantly reduces instantaneous current value, further Ground improves the floating axle stability of magnetic levitation bearing system.
Referring to Fig. 9, a kind of magnetic levitation bearing system control device, including floating axle command reception module 100, upper electric control Module 200 and rotation control module 300.
Floating axle command reception module 100 is for receiving floating axle instruction.Specifically, floating axle instruction is control magnetic suspension bearing The instruction that system electrification works.The type of floating axle instruction is not unique, for example, in one embodiment, magnetic suspension It is provided with and starts switch on bearing controller, it, directly will starting when user needs to work using magnetic levitation bearing system Switch is opened, and in the present embodiment, floating axle instruction is generated enabling signal, magnetcisuspension when user starts switch Floating bearing arrangement, which receives enabling signal i.e., to be indicated to receive corresponding floating axle instruction.It is appreciated that in other embodiments, by In magnetic levitation bearing system be by powering on the device realized to the suspension of shaft and rotation control, corresponding floating axle for bearing Instruction can also be power supply signal transmitted by the power supply device being connected with magnetically suspended bearing.When user needs magnetcisuspension When floating bearing arrangement is worked, the power switch of power supply device is set to by opening, power switch can be to magnetic suspension bearing Controller sends power supply signal, and as floating axle instructs.
Upper electric control module 200 is sent to each bearing of magnetic levitation bearing system step by step for being instructed according to floating axle Floating information.
Specifically, floating information is powered on for controlling each bearing.When magnetically suspended bearing receives floating axle instruction When, floating information is sent to a part of bearing of magnetic levitation bearing system first according to floating axle instruction, it is first to control a part of bearing It powers on and works.After split bearing completion powers on, magnetically suspended bearing sends floating to other bearings again Information completes the power on operation of other bearings, after each bearing is completed to power on, due to the effect of electromagnetic force, magnetic suspension The shaft of bearing arrangement will be in suspended state.It is appreciated that according to the number of bearings in a set of magnetic levitation bearing system with And user demand etc., different step numbers can be divided to send floating information to each bearing, complete working on power for all bearings.It can To understand, in one embodiment, floating information is current signal, when magnetically suspended bearing receives floating axle instruction When, it is powered to a part of bearing, is then powered to other bearings first, the substep floating axle behaviour of magnetic levitation bearing system can be realized Make.
Rotation control module 300 is used for when each bearing is powered on all in accordance with the completion of floating information, to magnetic suspension bearing system The shaft of system sends rotation control signal.
Specifically, rotation control signal is for controlling shaft rotation.When magnetically suspended bearing is according to floating axle instruction point After step powers on the completion of each bearing, under the action of electromagnetic force, the shaft of magnetic levitation bearing system will be in suspension State completes corresponding work in order to enable the shaft of magnetic levitation bearing system rotates, and magnetically suspended bearing will be at this time Shaft sends rotation control signal, control shaft rotation.Above-mentioned magnetic levitation bearing system control device, passes through the side powered on step by step Formula significantly reduces load sudden change amplitude when powering on each time so that load variation in the case where electric current variable quantity compared with It is small, it is and traditional the case where avoiding the occurrence of the excessive triggering overcurrent protection of curent change, magnetic levitation bearing system floating axle is caused to fail Magnetic levitation bearing system control method, which is compared, has stronger functional reliability.
In one embodiment, upper electric control module 200 is also used to be instructed according to floating axle, in two steps to the first radial axle It holds, the second transverse bearing and axial bearing send floating information.
Specifically, in the present embodiment, magnetic levitation bearing system includes two transverse bearings and an axial bearing, wherein Two transverse bearings are located at the opposite end of shaft, respectively the first transverse bearing and the second transverse bearing.For this reality Magnetic levitation bearing system in example is applied, 5 freedom degrees, the i.e. X of the first transverse bearing are classified as according to the freedom degree of different bearings Freedom degree and Y freedom degree, the X freedom degree of the second transverse bearing and the one degree of freedom of Y freedom degree and axial bearing.In basis Floating axle instruction can be first when sending floating information to the first transverse bearing, the second transverse bearing and axial bearing in two steps Floating information is sent to the first transverse bearing or the second transverse bearing, when the first transverse bearing or the second transverse bearing are according to floating Information completes power on operation and then sends upper power information to another transverse bearing and axial bearing, realizes another radial direction Bearing and axial bearing power on, i.e., realize the floating control of two freedom degrees first, then realize the floating of three degree of freedom Control reduces instantaneous current value to reach the control of substep floating, realizes that magnetic levitation bearing system stablizes the purpose of floating control. In another embodiment, it can also be that bearing sends floating information in the axial direction first, realize the floating operation of one degree of freedom, Then floating information is sent simultaneously to the first transverse bearing and the second transverse bearing, control the first transverse bearing and the second radial axle That holds powers on, and realizes the floating control of four freedom degrees, same to have reduction instantaneous current value, realizes that magnetic levitation bearing system is steady Determine the function of floating control.
In one embodiment, upper electric control module 200 is also used to be instructed according to floating axle, divides three steps to the first radial axle It holds, the second transverse bearing and axial bearing send floating information.
Specifically, divide three steps to send floating information to the first transverse bearing, the second transverse bearing and axial bearing, as divide Three steps realize the power on operation of magnetic levitation bearing system, and the first transverse bearing, the second transverse bearing and axial bearing power on point It does not carry out not individually, to realize reduction instantaneous current value, magnetic levitation bearing system is made to stablize the function of floating.It is appreciated that magnetcisuspension The step of floating bearing controller sends floating information to the first transverse bearing, the second transverse bearing and axial bearing is not unique , if can be realized a upper bearing power on completion and then to next bearing send floating information, realize first The electric control upper respectively of transverse bearing, the second transverse bearing and axial bearing.Can realize axial bearing pair first Then the floating for the one degree of freedom answered realizes the floating of corresponding two freedom degrees of the first transverse bearing, finally realizes second The floating etc. of corresponding two freedom degrees of transverse bearing.
In one embodiment, upper electric control module 200 is also used to be instructed according to floating axle, at the same to the first transverse bearing and Axial bearing sends floating information, after the first transverse bearing and axial bearing are powered on according to the completion of floating information, to second Transverse bearing sends floating information.
Specifically, it for the magnetic levitation bearing system with 5DOF, is sent in two steps to magnetic levitation bearing system When floating information, it can be and floating information is sent to the first transverse bearing and axial bearing by magnetically suspended bearing first, After first transverse bearing and axial bearing receive floating information, that realizes transverse bearing and axial bearing respectively powers on behaviour Make, i.e., realizes the floating control of three degree of freedom first.When the first transverse bearing and axial bearing are completed according to floating information After electricity, magnetically suspended bearing sends floating information to the second transverse bearing, and the second transverse bearing is real according to floating information The power on operation of existing second transverse bearing realizes the floating control of two freedom degrees.When the second transverse bearing is also completed to power on it Afterwards, that is, indicate that magnetically suspended bearing completes the floating control of magnetic levitation bearing system, as long as passing through magnetic suspension bearing control Device processed, which sends corresponding control signal to the shaft of magnetic levitation bearing system, can be completed the control operation of the rotation to shaft.At this In embodiment, then the floating control of realization three degree of freedom first is realized the floating control of two freedom degrees, is effectively reduced The load when control of magnetic levitation bearing system floating has operation in order to realizing the stabilization floating of magnetic levitation bearing system Simplest advantage.
Further, in one embodiment, referring to Fig. 10, upper electric control module 200 includes that the first suspension precision obtains Take unit 210, floating information transmitting unit 220 and the first alarm unit 230.
First suspension precision acquiring unit 210 is used to obtain the first suspension precision of the shaft of magnetic levitation bearing system.
Specifically, after the first transverse bearing and axial bearing are powered on according to floating information, in the work of electromagnetic force Under, can magnetic levitation bearing system be suspended accordingly.Magnetic levitation bearing system is additionally provided with displacement sensor, when turn When axis suspends under the action of electromagnetic force, displacement sensor can acquire the displacement information of shaft, be denoted as the first suspension essence Degree, and the first suspension precision collected can be sent to magnetically suspended bearing and analyzed by displacement sensor, To judge when the first transverse bearing and axial bearing power on, if so that shaft rises floating to corresponding position.In other realities It applies in example, can also be the range information for detecting shaft deflection reference equilbrium position by sensor, which is denoted as First suspension precision, and the first obtained suspension precision is sent to magnetically suspended bearing and is analyzed, judge that first is outstanding Whether floating precision, which meets the first default suspension precision, (namely judges that whether default less than first the range information collected is outstanding Floating precision).
Floating information transmitting unit 220 is used for when the first suspension precision meets the first default suspension precision, to the second diameter Floating information is sent to bearing.
Specifically, it indicates to have completed to power on when the first suspension precision meets the first default suspension precision, that is, The first transverse bearing and axial bearing power on success under the action of floating information, are able to carry out normal work.Magnetic suspension bearing control Device processed is preset with the corresponding numerical value of the first default suspension precision, when the first transverse bearing and axial bearing power on, sensor acquisition The corresponding first suspension precision of shaft is obtained, corresponding first suspension precision can be sent to magnetically suspended bearing and first Default suspension precision compares and analyzes, to judge whether shaft is suspending stabilized.It is inclined as shaft using the first default suspension precision Move with reference to equilbrium position distance and the first default suspension precision be 10um for, when collected shaft deflection reference balance position When the range information set is less than 10um, that is, illustrate that the first suspension precision meets the first default suspension precision, at this time magnetic suspension bearing Controller sends floating information to the second transverse bearing, and the second transverse bearing of control, which powers on, to be worked.
First alarm unit 230 is used for when the first suspension precision is unsatisfactory for the first default suspension precision, issues alarm signal Breath.
Specifically, it is on the first transverse bearing and axial bearing that the first suspension precision, which is unsatisfactory for the first default suspension precision, Electricity failure, that is, without completing to power on.When sensor send the first suspension precision be unsatisfactory for the first default suspension precision, say It is bright in the case where the first transverse bearing and axial bearing power on, do not make shaft be suspended to corresponding position.If magnetic suspension Bearing controller continues to send floating axle instruction to the second transverse bearing, executes subsequent operation, will be unable to guarantee magnetic suspension bearing The safe and stable operation of system, magnetically suspended bearing will control alarm alert and inform user at this time, with Take corresponding solution in time convenient for user.Similarly, using the first default suspension precision as shaft deflection reference balance position For the default suspension precision of the distance and first set is 10um, when the range information of collected shaft deflection reference equilbrium position When more than or equal to 10um, magnetically suspended bearing will alert informing user.
In one embodiment, please continue to refer to Figure 10, rotating control module 300 includes the second suspension precision acquiring unit 310, rotary unit 320 and the second alarm unit 330.
Second suspension precision acquiring unit 310 is used to obtain the second suspension precision of shaft.
Specifically, after being powered on above-mentioned first transverse bearing and axial bearing, the first suspension precision of acquisition is similar, The suspension precision that shaft is obtained by sensor, then compares and analyzes with the second default suspension precision, in order to judge the After two transverse bearings power on, whether shaft can reach corresponding levitation position.Detailed process is similar to the above embodiments, This is repeated no more.
Rotary unit 320 is used for when the second suspension precision meets the second default suspension precision, sends rotation control to shaft Signal processed.
Similarly, similar to the above embodiments, when the second suspension precision meets the second default suspension precision, magnetic suspension bearing Controller directly sends rotating signal to shaft, and control shaft rotation, details are not described herein.It should be pointed out that one In a embodiment, the second default suspension precision is numerical value more higher than the precision of the first suspension precision, using judgment criteria as shaft For deviateing the distance with reference to equilbrium position, the first default suspension precision setting is 10um, and the second default suspension precision can be set It sets and is less than 10um, such as 8um etc..
Second alarm unit 330 is used for when the second suspension precision is unsatisfactory for the second default suspension precision, issues alarm signal Breath.
Likewise, illustrating when the second suspension precision that sensor is sent is unsatisfactory for the second default suspension precision in the second diameter In the case where powering on to bearing, shaft is not made to be suspended to corresponding position.It is reported at this point, magnetically suspended bearing will issue Alert information informs user, to guarantee the safe and stable operation of magnetic levitation bearing system.In the present embodiment, when second step controls When second transverse bearing powers on, the detection of shaft suspension precision is also carried out, judges whether shaft is suspending stabilized, further improves The operational reliability of magnetic levitation bearing system.
Please refer to Figure 11, a kind of magnetic suspension bearing control system, including magnetic levitation bearing system 120 and magnetic suspension bearing control Device 110 processed, magnetically suspended bearing 110 connect magnetic levitation bearing system 120, and magnetically suspended bearing 110 is for receiving Floating axle instruction is rotated according to the shaft of above-mentioned method control magnetic levitation bearing system 120.
Specifically, floating axle instruction is that control magnetic levitation bearing system 120 powers on the instruction to work.Floating axle instruction Type is not unique, for example, in one embodiment, be provided with and start switch on magnetically suspended bearing 110, when with When family needs to be worked using magnetic levitation bearing system 120, unlatching will be directly started switch, in the present embodiment, will be floated Axis instructs generated enabling signal, magnetic levitation bearing system 120 when as user starts switch to receive enabling signal It indicates to receive corresponding floating axle instruction.It is appreciated that in other embodiments, since magnetic levitation bearing system 120 is logical The device of the suspension powered on for bearing realize to shaft and rotation control is crossed, corresponding floating axle instruction can also be and magnetic suspension Power supply signal transmitted by the power supply device that bearing controller 110 is connected.When user needs magnetic levitation bearing system 120 to carry out When work, the power switch of power supply device is set to by opening, power switch can send electricity to magnetically suspended bearing 110 The instruction of source signal, as floating axle.
It is instructed according to floating axle, sends floating information to each bearing of magnetic levitation bearing system 120 step by step.Floating information is used It is powered in controlling each bearing.When magnetically suspended bearing 110 receives floating axle instruction, instructed according to floating axle first to magnetic A part of bearing of suspension bearing system 120 sends floating information, controls a part of bearing and first powers on and works.When the part After bearing completion powers on, magnetically suspended bearing 110 sends floating information to other bearings again, completes other bearings Power on operation, after each bearing is completed to power on, due to the effect of electromagnetic force, the shaft of magnetic levitation bearing system 120 will Suspended state can be in.It is appreciated that according to number of bearings and user demand etc. in a set of magnetic levitation bearing system 120, Different step numbers can be divided to send floating information to each bearing, complete working on power for all bearings.It is appreciated that at one In embodiment, floating information is current signal, when magnetically suspended bearing 110 receives floating axle instruction, first to one Split bearing is powered, and is then powered to other bearings, and the substep floating axle operation of magnetic levitation bearing system 120 can be realized.
When each bearing is powered on all in accordance with the completion of floating information, sends and rotate to the shaft of magnetic levitation bearing system 120 Control signal.Rotation control signal is for controlling shaft rotation.When magnetically suspended bearing 110 is right according to floating axle instruction substep After each bearing completion powers on, under the action of electromagnetic force, the shaft of magnetic levitation bearing system 120 will be in suspension State completes corresponding work, at this time magnetically suspended bearing 110 in order to enable the shaft of magnetic levitation bearing system 120 rotates Rotation control signal, control shaft rotation will be sent to shaft.Above-mentioned magnetic suspension bearing control system, passes through what is powered on step by step Mode significantly reduces load sudden change amplitude when powering on each time so that load variation in the case where electric current variable quantity compared with It is small, the case where avoiding the occurrence of the excessive triggering overcurrent protection of curent change, 120 floating axle of magnetic levitation bearing system is caused to fail, with biography 120 control method of magnetic levitation bearing system of system, which is compared, has stronger functional reliability.
In one embodiment, Figure 12 is please referred to, magnetic suspension bearing control system further includes power supply device 130, power supply dress Set 130 connection magnetically suspended bearings 110.
Specifically, power supply device 130 is used to power for magnetic levitation bearing system 120, when magnetically suspended bearing 110 connects After receiving floating axle instruction, the electric current that power supply device 130 exports can be transferred to corresponding axis by magnetically suspended bearing 110 It holds, realizes the power on operation to bearing.Electromagnetic force can be generated after bearing powers on, and then make magnetic under the action of electromagnetic force The shaft of suspension bearing system 120 suspends, and shaft is in oil-free, friction free ring when in order under the action of rotation control signal It is run in border.
In one embodiment, Figure 13 is please referred to, magnetic levitation bearing system 120 includes the first transverse bearing, the second radial direction Bearing, axial bearing and shaft, the first transverse bearing and the second transverse bearing are respectively arranged at the opposite end of shaft.
Specifically, magnetic levitation bearing system 120 includes two transverse bearings and an axial bearing, two of them radial axle Hold the opposite end for being located at shaft, respectively the first transverse bearing and the second transverse bearing.For magnetcisuspension in the present embodiment Floating bearing arrangement 120 is classified as 5 freedom degrees according to the freedom degree of different bearings, i.e. the X freedom degree of the first transverse bearing and Y freedom degree, the X freedom degree of the second transverse bearing and the one degree of freedom of Y freedom degree and axial bearing.Refer to according to floating axle It enables, when sending floating information to the first transverse bearing, the second transverse bearing and axial bearing in two steps, can be first to first Transverse bearing or the second transverse bearing send floating information, when the first transverse bearing or the second transverse bearing are complete according to floating information Send upper power information at power on operation and then to another transverse bearing and axial bearing, realize another transverse bearing and Axial bearing powers on, i.e., realizes the floating control of two freedom degrees first, then realizes the floating control of three degree of freedom, with Reach the control of substep floating, reduce instantaneous current value, realizes that magnetic levitation bearing system 120 stablizes the purpose of floating control.Another In one embodiment, it can also be that bearing sends floating information in the axial direction first, realize the floating operation of one degree of freedom, then Floating information is sent simultaneously to the first transverse bearing and the second transverse bearing, controls the first transverse bearing and the second transverse bearing It powers on, realizes the floating control of four freedom degrees, it is same that there is reduction instantaneous current value, realize that magnetic levitation bearing system 120 is steady Determine the function of floating control.
In one embodiment, can also be instructed according to floating axle, point three steps to the first transverse bearing, the second transverse bearing and Axial bearing sends floating information.Specifically, three steps is divided to send to the first transverse bearing, the second transverse bearing and axial bearing Floating information, the power on operation for as dividing three steps to realize magnetic levitation bearing system 120, the first transverse bearing, the second transverse bearing and Powering on for axial bearing individually carries out, and to realize reduction instantaneous current value, magnetic levitation bearing system 120 is made to stablize floating Function.It is appreciated that magnetically suspended bearing 110 is sent to the first transverse bearing, the second transverse bearing and axial bearing The step of floating information is not unique, powers on completion and then to next axis in a upper bearing as long as can be realized It holds and sends floating information, realize the electric control upper respectively of the first transverse bearing, the second transverse bearing and axial bearing.? To be the floating for realizing the corresponding one degree of freedom of axial bearing first, corresponding two freedom of the first transverse bearing are then realized The floating of degree finally realizes the floating etc. of corresponding two freedom degrees of the second transverse bearing.
In one embodiment, Figure 14 is please referred to, magnetic suspension bearing control system is additionally provided with displacement sensor 140, position Displacement sensor 140 connects magnetically suspended bearing 110.
Displacement sensor 140 is used for the first suspension precision when the shaft for obtaining magnetic levitation bearing system 120.
After the first transverse bearing and axial bearing are powered on according to floating information, under the action of electromagnetic force, meeting So that magnetic levitation bearing system 120 suspends accordingly.Magnetic levitation bearing system 120 is additionally provided with displacement sensor 140, when When shaft suspends under the action of electromagnetic force, displacement sensor 140 can acquire the displacement information of shaft, and it is outstanding to be denoted as first Floating precision, and the first suspension precision collected can be sent to magnetically suspended bearing 110 by displacement sensor 140 It is analyzed, to judge when the first transverse bearing and axial bearing power on, if so that shaft rises floating to corresponding position. In other embodiments, it can also be the range information that shaft deflection reference equilbrium position is detected by sensor, by the distance Information is denoted as the first suspension precision, and the first obtained suspension precision is sent to magnetically suspended bearing 110 and is analyzed, Judge whether the first suspension precision meets the first default suspension precision and (namely judge whether the range information collected is less than First default suspension precision).It should be pointed out that the acquisition of suspension precision and judgment method are not unique, and not only limit The method shown in above-mentioned two embodiment, as long as before capable of reasonably indicating that the first transverse bearing and axial bearing power on Afterwards, the change in location situation of shaft phase.It is appreciated that the type of displacement sensor 140 is not that uniquely, can be electricity Eddy current sensor, inductance type transducer, capacitance sensor and photoelectric sensor etc., as long as the position of shaft can reasonably be indicated Situation of change.
Further, in one embodiment, please continue to refer to Figure 14, magnetic suspension bearing control system is additionally provided with alarm Device 150, alarm 150 connect magnetically suspended bearing 110.
Alarm 150 is used for the alert when the first suspension precision is unsatisfactory for the first default suspension precision.
Specifically, when sensor send the first suspension precision be unsatisfactory for the first default suspension precision, illustrate in the first diameter In the case where powering on to bearing and axial bearing, shaft is not made to be suspended to corresponding position.If magnetically suspended bearing 110 continue to send floating axle instruction to the second transverse bearing, execute subsequent operation, will be unable to guarantee magnetic levitation bearing system 120 Safe and stable operation, at this time magnetically suspended bearing 110 will control 150 alert of alarm inform user, In order to which user takes corresponding solution in time.Similarly, it is balanced by shaft deflection reference of the first default suspension precision For the distance of position and the first default suspension precision are 10um, when the distance of collected shaft deflection reference equilbrium position is believed When breath is greater than or equal to 10um, magnetically suspended bearing 110 will alert informing user.It is appreciated that at it In its embodiment, it can also be when the first suspension precision is unsatisfactory for the first default suspension precision, magnetically suspended bearing 110 It directly cuts off the power, the operation of magnetic levitation bearing system 120 is interrupted, to guarantee the safety of magnetic levitation bearing system 120.By right Rotating shaft position after magnetic levitation bearing system 120 powers on is analyzed and determined, when shaft is not suspended to corresponding position, It can make a response in time, effectively improve the operational reliability of magnetic levitation bearing system 120.It should be pointed out that alarm The type of device 150 is not that uniquely, can be phonetic alarm or other types of alarm, as long as can not have shaft The information for being suspended into corresponding position, which is told to use, per family may be used.Further, the setting position of alarm 150 is not unique yet, It can be set inside magnetic levitation bearing system 120, be also possible to individual warning device, as long as can not be suspended into shaft The information of corresponding position, which is told to use, per family may be used.
In one embodiment, displacement sensor 140 is also used to obtain the second suspension precision of shaft.Specifically, with it is upper State the first transverse bearing and after axial bearing powered on, it is similar to obtain the first suspension precision, obtains shaft by sensor Suspension precision, then compared and analyzed with the second default suspension precision, after judging that the second transverse bearing powers on, Whether shaft can reach corresponding levitation position.Detailed process is similar to the above embodiments, and details are not described herein.
Alarm 150 is also used to when the second suspension precision is unsatisfactory for the second default suspension precision, alert.Together Sample, when sensor send the second suspension precision be unsatisfactory for the second default suspension precision, illustrate to power in the second transverse bearing In the case where, do not make shaft be suspended to corresponding position.At this point, magnetically suspended bearing 110 is by alert User is informed, to guarantee the safe and stable operation of magnetic levitation bearing system 120.In the present embodiment, when second step controls second When transverse bearing powers on, the detection of shaft suspension precision is also carried out, judges whether shaft is suspending stabilized, further improves magnetcisuspension The operational reliability of floating bearing arrangement 120.
It should be pointed out that in one embodiment, please referring to Figure 15, power supply device 130 includes power supply processing circuit 131 With current foldback circuit 132, power supply processing circuit 131 connects current foldback circuit 132, and current foldback circuit 132 connects magnetcisuspension Floating bearing controller 110.Power supply processing circuit 131 can be handled input power, obtain being suitble to magnetic levitation bearing system 120 generate electromagnetic force, realize the DC power supply of floating axle control.When heavier-weight (the loading larger) of shaft, may lead The instantaneous output current value for sending a telegraph source device 130 is excessive, in order to guarantee the safe and stable fortune of 120 system of magnetic levitation bearing system Row, will trigger overcurrent protection, directly cut off the power, fall the shaft of magnetic levitation bearing system 120, at this time to prevent magnetic The operation of suspension bearing system 120 effectively improves the safety of magnetic levitation bearing system 120.
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 The limitation to claim therefore cannot be interpreted as.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 levitation bearing system control method, which is characterized in that the described method includes:
Receive floating axle instruction；
It is instructed according to the floating axle, sends floating information, the floating information to each bearing of magnetic levitation bearing system step by step It is powered on for controlling each bearing；
When each bearing is powered on all in accordance with floating information completion, the shaft of Xiang Suoshu magnetic levitation bearing system is sent Rotation control signal, the rotation control signal is for controlling the shaft rotation.
2. magnetic levitation bearing system control method according to claim 1, which is characterized in that the magnetic levitation bearing system Bearing include the first transverse bearing, the second transverse bearing and axial bearing, it is described according to the floating axle instruct, step by step to described Each bearing of magnetic levitation bearing system sends the step of floating information, comprising:
It is instructed according to the floating axle, in two steps to first transverse bearing, second transverse bearing and the axial bearing Send floating information；
Or, being instructed according to the floating axle, divide three steps to first transverse bearing, second transverse bearing and the axial axis It holds and sends floating information.
3. magnetic levitation bearing system control method according to claim 2, which is characterized in that described to be referred to according to the floating axle The step of enabling, sending floating information to first transverse bearing, second transverse bearing and the axial bearing in two steps, Include:
It is instructed according to the floating axle, while sending floating information to first transverse bearing and the axial bearing；
After first transverse bearing and the axial bearing are powered on according to floating information completion, the second diameter of Xiang Suoshu Floating information is sent to bearing.
4. magnetic levitation bearing system control method according to claim 3, which is characterized in that described when described first is radial After bearing and the axial bearing are powered on according to floating information completion, the second transverse bearing of Xiang Suoshu sends floating information The step of, comprising:
Obtain the first suspension precision of the shaft of the magnetic levitation bearing system；
When the first suspension precision meets the first default suspension precision, the second transverse bearing of Xiang Suoshu sends floating information；
When the first suspension precision is unsatisfactory for the described first default suspension precision, alert.
5. magnetic levitation bearing system control method according to claim 4, which is characterized in that described to work as each bearing When powering on all in accordance with floating information completion, the shaft of Xiang Suoshu magnetic levitation bearing system sends the step of rotation control signal Suddenly, comprising:
Obtain the second suspension precision of the shaft；
When the second suspension precision meets the second default suspension precision, Xiang Suoshu shaft sends rotation control signal；
When the second suspension precision is unsatisfactory for the described second default suspension precision, alert.
6. magnetic levitation bearing system control method according to claim 2, which is characterized in that described to be referred to according to the floating axle The step of enabling, sending floating information to first transverse bearing, second transverse bearing and the axial bearing in two steps, Include:
It is instructed according to the floating axle, while sending floating information to first transverse bearing and second transverse bearing；
After first transverse bearing and second transverse bearing are powered on according to floating information completion, Xiang Suoshu axis Floating information is sent to bearing.
7. magnetic levitation bearing system control method according to claim 2, which is characterized in that described to be referred to according to the floating axle The step of enabling, three steps divided to send floating information to first transverse bearing, second transverse bearing and the axial bearing, Include:
It is instructed according to the floating axle, the first transverse bearing of Xiang Suoshu sends floating information；
After first transverse bearing is powered on according to floating information completion, Xiang Suoshu axial bearing sends floating letter Breath；
After the axial bearing is powered on according to floating information completion, the second transverse bearing of Xiang Suoshu sends floating letter Breath.
8. a kind of magnetic levitation bearing system control device, which is characterized in that described device includes:
Floating axle command reception module, for receiving floating axle instruction；
Upper electric control module sends floating to each bearing of magnetic levitation bearing system step by step for instructing according to the floating axle Information, the floating information are powered on for controlling each bearing；
Rotate control module, for when each bearing all in accordance with the floating information completion power on when, Xiang Suoshu magnetic suspension The shaft of bearing arrangement sends rotation control signal, and the rotation control signal is for controlling the shaft rotation.
9. a kind of magnetic suspension bearing control system characterized by comprising magnetic levitation bearing system and magnetic suspension bearing control Device, the magnetically suspended bearing connect the magnetic levitation bearing system, and the magnetically suspended bearing is floating for receiving Axis instruction, the shaft rotation of method control magnetic levitation bearing system according to claim 1-7.
10. magnetic suspension bearing control system according to claim 9, which is characterized in that it further include power supply device, the power supply Device connects the magnetically suspended bearing.
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CN113700747A (en) * 2021-09-27 2021-11-26 珠海格力电器股份有限公司 Levitation control device and method of magnetic levitation system and magnetic levitation system
CN114941653A (en) * 2022-06-10 2022-08-26 珠海格力电器股份有限公司 Control method and device for magnetic suspension bearing, magnetic bearing system and storage medium
CN117588491A (en) * 2024-01-18 2024-02-23 瑞纳智能设备股份有限公司 Magnetic suspension bearing system, shutdown control method and device thereof and electrical equipment

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