CN208764134U - Magnetic suspension bearing controls equipment and system - Google Patents
Magnetic suspension bearing controls equipment and system Download PDFInfo
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- CN208764134U CN208764134U CN201821254518.8U CN201821254518U CN208764134U CN 208764134 U CN208764134 U CN 208764134U CN 201821254518 U CN201821254518 U CN 201821254518U CN 208764134 U CN208764134 U CN 208764134U
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- displacement signal
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Abstract
This application involves a kind of magnetic suspension bearing control equipment and systems.The equipment includes first axis sensor, the second axial sensor and control device, first axis sensor and the second axial sensor are juxtaposed on the opposite sides of the shaft of magnetic suspension bearing, first axis sensor connects control device, and the second axial sensor connects control device.The first displacement signal and second displacement signal are acquired by the first axis sensor and the second axial sensor that are juxtaposed on the shaft opposite sides of magnetic suspension bearing, sinusoidal variations trend is presented in first displacement signal and second displacement signal, average displacement signal after averaging to two signals is a steady state value in allowable range of error, the problem of axial current is easily saturated when can be effectively improved high speed rotation is controlled according to axial current of the average displacement signal to shaft, the stable operation for realizing magnetic suspension bearing, improves operation stability.
Description
Technical field
This application involves magnetic suspension bearing technical fields, control equipment and system more particularly to a kind of magnetic suspension bearing.
Background technique
A set of magnetic levitation bearing system generally uses two radial direction magnetic bearings and an axial magnetic bearing to hang shaft
Over draft is held, make shaft work it is oil-free, without Frotteurism, have many advantages, such as at a high speed, it is non-maintaining.Magnetic suspension control circuit passes through reality
When control bearing winding in electric current guarantee the suspension of shaft, be one of the core component in magnetic levitation bearing system.
The axial sensor detection faces of traditional magnetic levitation bearing system are mounted in shaft, nothing during practical set
Method guarantees the bad guarantee of detection plane inclination, if gradient is more than a certain range, shaft is easy in high-speed rotation process
There is axial current saturation, lead to magnetic levitation bearing system unstability, that there are operation stabilities is low for traditional magnetic levitation bearing system
The problem of.
Utility model content
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of magnetic suspension bearing control that can be improved operation stability
Equipment and system.
A kind of magnetic suspension bearing control equipment, the equipment include:
The first displacement signal is acquired, and the first displacement signal is sent to the first axis sensor of control device；
Second displacement signal is acquired, and second displacement signal is sent to the second axial sensor of control device；
And the first displacement signal and second displacement signal are received, and make even to the first displacement signal and second displacement signal
Mean value obtains average displacement signal, the control device controlled according to axial current of the average displacement signal to shaft；
First axis sensor and the second axial sensor are juxtaposed on the opposite sides of the shaft of magnetic suspension bearing, the
One axial sensor connects control device, and the second axial sensor connects control device.
In one embodiment, control device includes average value processing circuit and control circuit, and average value processing circuit connects
First axis sensor is connect, average value processing circuit connects the second axial sensor, and average value processing circuit connects control circuit.
In one embodiment, control device further includes sliding mean filter circuit, and sliding mean filter circuit connection is flat
Average value processing circuit slides mean filter circuit connection control circuit.
In one embodiment, control device further includes signal conditioning circuit, and signal conditioning circuit connects first axis and passes
Sensor, signal conditioning circuit connect the second axial sensor, and signal conditioning circuit connects average value processing circuit.
In one embodiment, control circuit includes bearing control circuit and power amplification circuit, and bearing control circuit connects
Average value processing circuit is connect, power amplification circuit connects bearing control circuit.
In one embodiment, first axis sensor and the second axial sensor are inductance type transducer.
A kind of magnetic suspension bearing control system, the system first axis sensor, the second axial sensor, control dress
It sets, shaft and axial detection plate, first axis sensor and the second axial sensor are juxtaposed on turning for magnetic suspension bearing
The opposite sides of axis, first axis sensor connect the control device, and the second axial sensor connects control device, control dress
Set connection shaft.
Above-mentioned magnetic suspension bearing control equipment and system acquire the first displacement signal by first axis sensor, and
Second axial sensor acquires second displacement signal, and the first displacement signal is shaft of the first axis sensor along magnetic suspension bearing
Horizontal direction to magnetic suspension bearing axial detection plate distance, the second axial sensor be the second axial sensor along magnetcisuspension
The horizontal direction for the shaft that floating axle is held to magnetic suspension bearing axial detection plate distance, collected first displacement signal and
Two displacement signals obtain average displacement signal after control device is averaged, and according to average displacement signal to magnetic suspension bearing
Axial current controlled.By the first axis sensor and for being juxtaposed on the shaft opposite sides of magnetic suspension bearing
Two axial sensors acquire the first displacement signal and second displacement signal, and the first displacement signal and second displacement signal present sinusoidal
Variation tendency, the average displacement signal after averaging to two signals are constant for one in allowable range of error
Value, axial current when can be effectively improved high speed rotation is controlled according to axial current of the average displacement signal to shaft and is easily saturated
The problem of, the stable operation of magnetic suspension bearing is realized, operation stability is improved.
Detailed description of the invention
Fig. 1 is the structural block diagram that magnetic suspension bearing controls equipment in one embodiment；
Fig. 2 is the structural block diagram that magnetic suspension bearing controls equipment in another embodiment；
Fig. 3 is the structural block diagram that magnetic suspension bearing controls equipment in further embodiment；
Fig. 4 is the structural block diagram that magnetic suspension bearing controls equipment in another embodiment；
Fig. 5 is the structural block diagram that magnetic suspension bearing controls equipment in another embodiment；
Fig. 6 is the structural block diagram that magnetic suspension bearing controls equipment in further embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, as shown in Figure 1, providing a kind of magnetic suspension bearing control equipment, the equipment includes adopting
Collect the first displacement signal, and the first displacement signal is sent to the first axis sensor 100 of control device；Acquire second displacement
Signal, and second displacement signal is sent to the second axial sensor 200 of control device；And receive the first displacement signal and
Second displacement signal, and the first displacement signal and second displacement signal are averaged to obtain average displacement signal, according to average
The control device 300 that displacement signal controls the axial current of shaft；First axis sensor 100 and the second axial sensing
Device 200 is juxtaposed on the opposite sides of the shaft of magnetic suspension bearing, and first axis sensor 100 connects control device 300, the
Two axial sensors 200 connect control device 300.
First displacement signal is sent to control device for acquiring the first displacement signal by first axis sensor 100
300, the first displacement signal be first axis sensor 100 along the shaft of magnetic suspension bearing horizontal direction to magnetic suspension bearing
The distance of axial detection plate.Specifically, in magnetic levitation bearing system, axial detection plate is mounted on the shaft of magnetic suspension bearing
On, when axial detection plate is absolutely installed vertically on rotor axis, shaft axial displacement in rotary course is always d, d
It is displaced for the reference of setting, it should be noted that the reference displacement of setting is determined by assembling, since part processing, assembly are public
The factors such as difference can not be completely the same, and the reference position of every magnetic levitation bearing system setting all can be different.
Second displacement signal is sent to control device for acquiring second displacement signal by the second axial sensor 200
300, second displacement signal be the second axial sensor 200 along the shaft of magnetic suspension bearing horizontal direction to magnetic suspension bearing
The distance of axial detection plate.As shown in Fig. 2, first axis sensor 100 and the second axial sensor 200 are juxtaposed on magnetcisuspension
The opposite sides for the shaft that floating axle is held is set side by side i.e. when axial detection plate is installed vertically on rotor axis, then first axis
The position that sensor 100 and the second axial sensor 200 are installed to axial detection plate be equidistant or distance difference exists
Within the scope of allowable error, first axis sensor 100 and the second axial sensor 200 are at a distance from axial detection plate and different
It is fixed, only it need to meet surveying in range in axial sensor, and 180 ° of phase mutual deviation settings in the same plane, due in reality
Axial detection plate has a certain amount of inclination in assembly, and axial detection plate is axial with respect to first axis sensor 100 and second to be passed
Sensor 200 be it is inclined, when first axis sensor 100 is nearest apart from axial detection plate, 200 distance of the second axial sensor
Axial detection plate is farthest, thus 180 ° of phase mutual deviation.It is appreciated that first axis sensor 100 and the second axial sensor 200
Type it is not unique, need to only meet the displacement accurately detected with axial detection plate, in one embodiment, first axle
It is inductance type transducer to sensor 100 and the second axial sensor 200.
Control device 300 is for receiving collected first displacement signal of first axis sensor 100 and second axially
The collected second displacement signal of sensor 200, is averaged to obtain to received first displacement signal and second displacement signal
Average displacement signal is controlled according to axial current of the average displacement signal to shaft.The axial detection plate in practical set
A certain amount of inclination is had, the first displacement signal and second that first axis sensor 100 acquires when shaft rotates a circle are axial
Sinusoidal variations trend, and 180 ° of phase mutual deviation are presented in the second displacement signal that sensor 200 acquires, and two displacement signals are averaged
Average displacement signal after value is a steady state value in default allowable range of error.Since magnetic suspension bearing is to utilize magnetic force
Effect is rotated, therefore when being controlled according to axial current of the average displacement signal to shaft, specifically according to average
Displacement signal controls the magnetic force of electromagnet in shaft, so that the rotation of shaft is controlled, with the return of driving axial detection plate
Reference to setting is displaced.
Above-mentioned magnetic suspension bearing controls equipment, acquires the first displacement signal and the second axis by first axis sensor
Second displacement signal is acquired to sensor, the first displacement signal is level of the first axis sensor along the shaft of magnetic suspension bearing
Direction to magnetic suspension bearing axial detection plate distance, the second axial sensor be the second axial sensor along magnetic suspension bearing
Shaft horizontal direction to magnetic suspension bearing axial detection plate distance, collected first displacement signal and second displacement
Signal obtains average displacement signal after control device is averaged, and according to average displacement signal to the axial current of shaft into
Row control.By the first axis sensor and the second axial sensor that are juxtaposed on the shaft opposite sides of magnetic suspension bearing
The first displacement signal and second displacement signal are acquired, sinusoidal variations trend, warp is presented in the first displacement signal and second displacement signal
It is a steady state value that the average displacement signal after averaging to two signals, which is crossed, in allowable range of error, according to average bit
Shifting signal controls the axial current of shaft the problem of axial current is easily saturated when can be effectively improved high speed rotation, realizes
The stable operation of magnetic suspension bearing, improves operation stability.
In one embodiment, as shown in figure 3, control device 300 includes average value processing circuit 340 and control circuit
380, average value processing circuit 340 connects first axis sensor 100, the axial sensing of the connection of average value processing circuit 340 second
Device 200, average value processing circuit connect control circuit 380.
Average value processing circuit 340 is for receiving collected first displacement signal of first axis sensor 100, Yi Ji
The collected second displacement signal of two axial sensor 200, is averaged received first displacement signal and second displacement signal
Value obtains average displacement signal, and average displacement signal is sent to control circuit 380.The axial detection plate meeting in practical set
There is a certain amount of inclination, the first displacement signal and second that first axis sensor 100 acquires when shaft rotates a circle are axial to be passed
Sinusoidal variations trend, and 180 ° of phase mutual deviation are presented in the second displacement signal that sensor 200 acquires, and two displacement signals are averaged
Average displacement signal later is a steady state value in default allowable range of error.
Control circuit 380 according to axial current of the average displacement signal to shaft for controlling.Specifically, first
Average displacement signal after shifting signal and second displacement signal are averaged is constant for one in default allowable range of error
Value, therefore when the axial current to shaft controls, according to the reference of average displacement signal and setting displacement d to axial electricity
Stream is controlled, and when average displacement signal is greater than with reference to displacement d, then increases axial current, i.e., electromagnet in increase shaft
Magnetic force；When average displacement signal is less than with reference to displacement d, then reduce axial current, i.e., the magnetic force of electromagnet in reduction shaft, by
After by being averaged to the first displacement signal and second displacement signal, reality that obtained average displacement signal is fed back
The deviation of both the reference of displacement and setting displacement d is smaller therefore all smaller to the adjustment of axial current every time, can be effectively improved
The problem of axial current is easily saturated when magnetic suspension bearing high speed rotation realizes the stable operation of magnetic levitation bearing system.
In one embodiment, as shown in figure 4, control device 300 further includes sliding mean filter circuit 360, sliding is equal
Value filtering circuit 360 connects average value processing circuit 340, and sliding mean filter circuit 360 connects control circuit 380.Sliding is equal
Value filtering circuit 360 is used for real-time reception average displacement signal, and carries out sliding mean value to the average displacement signal of real-time reception
Filtering processing, obtains actual displacement signal, actual displacement signal is sent to control circuit 380.Specifically, by first
Shifting signal and second displacement signal are averaged to obtain average displacement signal, according to average displacement signal to the axial current of shaft
The problem of control can be effectively improved axial current saturation is carried out, but since two axial sensors are in actual fabrication and installation process
In be difficult to accomplish completely the same, there are certain otherness, cause the axial current fluctuation peak-to-peak value of test also bigger than normal,
There is also the risks of current saturation when operation bad working environments, in order to reduce first axis sensor 100 and the second axial sensor
Influence of 200 difference to magnetic levitation bearing system is believed by average displacement of the sliding mean filter circuit 360 to real-time reception
Sliding mean filter processing number is carried out, actual displacement signal is obtained, so that control circuit 380 can be according to actual displacement signal to turning
The axial current of axis is controlled.Sliding mean filter processing is to be believed based on sliding Mean Filtering Algorithm received average displacement
It number is handled, first establishes a data buffer zone in RAM, store N number of sampled data in order, often adopted into a new number
According to just that data acquired earliest are lost, then ask arithmetic mean of instantaneous value or the weighting of N number of data including new data
Average value.In this way, every once sampled, so that it may calculate a new average value.It is right by sliding mean filter circuit 360
Average displacement signal carries out sliding mean filter processing, it is ensured that the real-time of data processing is unaffected, and can be had
Effect weakens the influence of first axis sensor 100 and 200 difference of the second axial sensor to bearing arrangement, magnetic levitation bearing system
Axial current fluctuation peak-to-peak value in the process of running is on the basis of first axis sensor 100 and the second axial sensor 200
On reduce about 50% or so, efficiently solve magnetic levitation bearing system and easily occur asking for current saturation in high-speed rotation process
Topic.
In one embodiment, as shown in figure 5, control device 300 further includes signal conditioning circuit 320, signal condition electricity
Road 320 connects first axis sensor 100, and signal conditioning circuit 600 connects the second axial sensor 200, signal conditioning circuit
320 connection average value processing circuits 340, signal conditioning circuit 320 are used to receive the first displacement signal and second displacement signal, and
Signal condition is carried out to the first displacement signal and second displacement signal, by the first displacement signal and second after progress signal condition
Displacement signal is sent to average value processing circuit 300.Specifically, signal conditioning circuit 320 acquires first axis sensor 100
The first displacement signal and the second axial sensor 200 acquisition second displacement signal be converted to standard signal, and to conversion after
The first displacement signal and second displacement signal disappear and the processing such as tremble, filter, being isolated, will treated the first displacement signal and
Second displacement signal is sent to average value processing circuit 340, and average value processing circuit 340 believes the first displacement after signal condition
Number and second displacement signal be averaged to obtain average displacement signal, and average displacement signal is sent to control circuit 380.
In one embodiment, control circuit 380 is generated for receiving average displacement signal, and according to average displacement signal
Signal is controlled, the axial current of shaft is controlled according to control signal.By the corresponding displacement of received average displacement signal
Data and the shifting of the reference bit of setting are compared, and generate corresponding control signal according to comparison result, according to control signal to turning
The axial current of axis is controlled.It is appreciated that then controlling electricity when control device 300 includes sliding mean filter circuit 360
Road 380 generates control signal for receiving actual displacement signal, and according to actual displacement signal, according to control signal to shaft
Axial current is controlled, and specifically, the corresponding displacement data of received actual displacement signal and the reference bit of setting are moved into
Row compares, and generates corresponding control signal according to comparison result, is controlled according to control signal the axial current of shaft.
In one embodiment, as shown in fig. 6, control circuit 380 includes bearing control circuit 382 and power amplification circuit
384, bearing control circuit 382 connects average value processing circuit 340, and power amplification circuit 384 connects bearing control circuit 382.
Specifically, bearing control circuit 382 generates control signal for receiving average displacement signal, and according to average displacement signal, will
The control signal of generation is sent to power amplification circuit 384.Power amplification circuit 384 is for generating bearing control circuit 382
Control signal be converted into control electric current, control electric current is exported to shaft, according to control electric current to the magnetic of electromagnet in shaft
Power is controlled, to control the rotation of shaft.It is appreciated that when control device 300 includes sliding mean filter circuit 360
When, then bearing control circuit 382 generates control signal for receiving actual displacement signal, and according to actual displacement signal, will give birth to
At control signal be sent to power amplification circuit 384, then corresponding control signal is converted into controlling by power amplification circuit 384
Electric current exports control electric current to shaft, is controlled according to control electric current the magnetic force of electromagnet in shaft.
In one embodiment, a kind of magnetic suspension bearing control system, the system first axis sensor, are provided
Two axial sensors, control device, shaft and axial detection plate, first axis sensor and the second axial sensor are set side by side
It is placed in the opposite sides of the shaft of magnetic suspension bearing, first axis sensor connects the control device, the second axial sensor
Control device is connected, control device connects shaft.Specifically, first axis sensor, second in magnetic suspension bearing control system
The function of the function and effect of axial sensor and control device and respective devices and device in magnetic suspension bearing control equipment
And effect is identical, is no longer repeated herein.
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 utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this Shen
Protection scope please.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (7)
1. a kind of magnetic suspension bearing controls equipment, which is characterized in that the equipment includes:
The first displacement signal is acquired, and first displacement signal is sent to the first axis sensor of control device；
Second displacement signal is acquired, and the second displacement signal is sent to the second axial sensor of the control device；
And first displacement signal and the second displacement signal are received, and to first displacement signal and described second
Displacement signal is averaged to obtain average displacement signal, according to the average displacement signal to the axial direction of the shaft of magnetic suspension bearing
The control device that electric current is controlled；
The first axis sensor and second axial sensor are juxtaposed on opposite the two of the shaft of magnetic suspension bearing
Side, the first axis sensor connect the control device, and second axial sensor connects the control device.
2. magnetic suspension bearing according to claim 1 controls equipment, which is characterized in that the control device includes average value
Processing circuit and control circuit, the average value processing circuit connect the first axis sensor, the average value processing electricity
Road connects second axial sensor, and the average value processing circuit connects the control circuit.
3. magnetic suspension bearing according to claim 2 controls equipment, which is characterized in that the control device further includes sliding
Mean filter circuit, average value processing circuit described in the sliding mean filter circuit connection, the sliding mean filter circuit
Connect the control circuit.
4. magnetic suspension bearing according to claim 3 controls equipment, which is characterized in that the control device further includes signal
Conditioning circuit, the signal conditioning circuit connect the first axis sensor, the signal conditioning circuit connection described second
Axial sensor, the signal conditioning circuit connect the average value processing circuit.
5. magnetic suspension bearing according to claim 2 controls equipment, which is characterized in that the control circuit includes bearing control
Circuit and power amplification circuit processed, average value processing circuit described in the bearing control circuit connection, the power amplification circuit
Connect the bearing control circuit.
6. controlling equipment to magnetic suspension bearing described in 5 any one according to claim 1, which is characterized in that the first axle
It is inductance type transducer to sensor and second axial sensor.
7. a kind of magnetic suspension bearing control system, which is characterized in that the system first axis sensor, the second axial sensing
Device, control device, shaft and axial detection plate, the first axis sensor and second axial sensor are set side by side
In the opposite sides of the shaft of magnetic suspension bearing, the first axis sensor connects the control device, and described second is axial
Sensor connects the control device, and the control device connects the shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821254518.8U CN208764134U (en) | 2018-08-06 | 2018-08-06 | Magnetic suspension bearing controls equipment and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821254518.8U CN208764134U (en) | 2018-08-06 | 2018-08-06 | Magnetic suspension bearing controls equipment and system |
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| Publication Number | Publication Date |
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| CN208764134U true CN208764134U (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821254518.8U Active CN208764134U (en) | 2018-08-06 | 2018-08-06 | Magnetic suspension bearing controls equipment and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757732A (en) * | 2018-08-06 | 2018-11-06 | 珠海格力电器股份有限公司 | Magnetic suspension bearing control device, method and storage medium |
-
2018
- 2018-08-06 CN CN201821254518.8U patent/CN208764134U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757732A (en) * | 2018-08-06 | 2018-11-06 | 珠海格力电器股份有限公司 | Magnetic suspension bearing control device, method and storage medium |
| CN108757732B (en) * | 2018-08-06 | 2023-10-03 | 珠海格力电器股份有限公司 | Magnetic bearing control apparatus, method, and storage medium |
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