CN106545574A - A kind of oscillation crosswise control device of cardan shaft - Google Patents
A kind of oscillation crosswise control device of cardan shaft Download PDFInfo
- Publication number
- CN106545574A CN106545574A CN201610952514.6A CN201610952514A CN106545574A CN 106545574 A CN106545574 A CN 106545574A CN 201610952514 A CN201610952514 A CN 201610952514A CN 106545574 A CN106545574 A CN 106545574A
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- Prior art keywords
- bearing
- electromagnetic
- electromagnetic bearing
- control
- control device
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/321—Bearings or seals specially adapted for propeller shafts
-
- 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
- F16C32/0446—Determination of the actual position of the moving member, e.g. details of sensors
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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
- F16C32/047—Details of housings; Mounting of active magnetic bearings
-
- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/30—Ships, e.g. propelling shafts and bearings therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of oscillation crosswise control device of cardan shaft, which includes：Stern bearing, intermediate bearing and the thrust bearing being sequentially distributed along the axial direction of rotor；Also include：Electromagnetic bearing component, which includes：Electromagnetic bearing, displacement transducer, controller and power amplifier；Electromagnetic bearing is also distributed along the axial direction of rotor, and electromagnetic bearing is near intermediate bearing or near stern bearing；Displacement transducer is installed on electromagnetic bearing, and displacement transducer is connected with controller, and controller is connected with power amplifier, and power amplifier is connected with electromagnetic bearing；Displacement transducer is used to detect the displacement that rotor deviates reference point, controller is for being converted to control signal by displacement,, for control signal is converted to control electric current, control electric current is used to control electromagnetic bearing generation magnetic force so that rotor maintains levitation position constant for power amplifier.The present invention has been reduced or eliminated bearing friction power using electromagnetic bearing, contactless abrasion, without the need for lubrication, long working life and maintenance cost is low.
Description
Technical field
The present invention relates to vibration control field, the oscillation crosswise control device of more particularly to a kind of cardan shaft.
Background technology
Existing propulsion shaft device includes stern bearing, intermediate bearing and thrust bearing, and wherein stern bearing and intermediate bearing is
Water lubriucated bearing, low speed friction coefficient are larger, and frictional noise is easily produced in insufficient lubrication, destroy the underwateracoustic product of aircraft
Matter.Water lubriucated bearing is poor because of the mobility of water, and its insufficient lubrication state is serious compared with stern bearing, in the middle of real running results show
Bearing produces periodicity grating in shafting low cruise.
The content of the invention
The present invention is directed to above-mentioned problems of the prior art, proposes a kind of oscillation crosswise control device of cardan shaft,
Using electromagnetic bearing, electromagnetic bearing is made to play main supporting or separate support effect when shaft device normal work is advanced, so as to reduce
Original bearing load undertakes whole load of original bearing, and bearing friction power has been reduced or eliminated.
To solve above-mentioned technical problem, the present invention is achieved through the following technical solutions：
The present invention provides a kind of oscillation crosswise control device of cardan shaft, and which includes：It is sequentially distributed along the axial direction of rotor
Stern bearing, intermediate bearing and thrust bearing；
Also include：Electromagnetic bearing component, the electromagnetic bearing component include：Electromagnetic bearing, displacement transducer, controller with
And power amplifier；
, also along the axial direction distribution of the rotor, the electromagnetic bearing is near the intermediate bearing or close for the electromagnetic bearing
The stern bearing；The electromagnetic bearing includes：Two groups of electromagnet assemblies, the electromagnet assembly are arranged on stator, described turn
Fullness over the chest during pregnancy is floated in the magnetic field produced by the electromagnetic assembly；
Institute's displacement sensors are installed on the electromagnetic bearing, and institute's displacement sensors are connected with the controller, institute
State controller to be connected with the power amplifier, the power amplifier is connected with the electromagnetic bearing；Institute's displacement sensors
For detecting that the rotor deviates the displacement of reference point, and the controller, the control are given by the displacement transmission for detecting
Device processed is for being converted to control signal by the displacement for receiving, and the control signal is transferred to the power amplification
Device, the power amplifier is for being converted to control electric current by the control signal for receiving, and the control electric current is passed
The electromagnetic bearing is defeated by, the control electric current is used to control the electromagnetic bearing generation magnetic force so that the rotor remains outstanding
Trim is put constant；
Per group of electromagnet assembly includes two symmetrical electric magnet, four electricity of the electromagnet assembly
Magnet is uniformly distributed along the circumference, and electromagnet assembly described in two groups is respectively used to control the electromagnetic bearing in shaking vertically and horizontally
It is dynamic.
In order to eliminate the frictional noise mentioned in this background technology, except improving bearing material performance and improving lubrication shape
Outside state, exactly change the stress of bearing.Used in the present invention, changing the stress of bearing, electromagnetic bearing can be to rotor for electromagnetic bearing
Suspension electromagnetic force is produced, is made rotor suspension in a certain ad-hoc location, is changed the force-bearing situation of original bearing.In addition, the present invention is adopted
Electromagnetic bearing is controlled with oscillation crosswise Active Control Method, active control can be carried out to the oscillation crosswise for advancing shaft device, i.e.,
The running status of rotor can carry out active control by electromagnetic bearing, and runnability is good.
It is preferred that the electromagnetic bearing adopts Differential Driving pattern, described in one of them of per group of electromagnet assembly
The electromagnetic force of electric magnet is by the bias current and control electric current of the power amplifier and drives, another electric magnet
Electromagnetic force is driven with the difference of control electric current by the bias current of the power amplifier, total electromagnetism of the group electromagnet assembly
Controling power is the difference of the electromagnetic force of two electric magnet.
It is preferred that the electromagnetic bearing also includes：Shell, coil and coil rack, wherein,
The shell is located at the outside of the electromagnet assembly, and the shell is stator, and the shell is magnetic conductor；
The coil is wrapped on the coil rack；
The coil rack is fixed on the electromagnet assembly.
It is preferred that being bolted to connection between the shell and the electromagnet assembly.
It is preferred that each described electric magnet is U-shaped, each described electric magnet includes at least two magnetic poles.
It is preferred that the rigidity of the electromagnet assembly and damping can be adjusted.
It is preferred that institute's displacement sensors include multiple, institute's displacement sensors on each described electric magnet, are both provided with,
And the number of the institute's displacement sensors on each described electric magnet is one or more.
It is preferred that the stern bearing and/or the intermediate bearing are water lubricated rubber bearing.
Compared to prior art, the present invention has advantages below：
(1) the oscillation crosswise control device of the cardan shaft that the present invention is provided, using electromagnetic bearing, electromagnetic bearing is arranged on
Near stern bearing or intermediate bearing, electromagnetic bearing is made to play main supporting or separate support effect when shaft device normal work is advanced,
So as to reducing stern bearing or intermediate bearing load or undertaking whole load of stern bearing or intermediate bearing, bearing is reduced or eliminated
Frictional force；The contactless abrasion of electromagnetic bearing, without the need for lubrication, long working life and maintenance cost is low；
(2) propulsion shaft device of the invention adopts oscillation crosswise Active Control Method, can be to advancing the horizontal of shaft device
Vibration realizing active control；
(3) electromagnetic bearing of the invention adopts Differential Driving pattern, and the power of an electric magnet is by bias current and control electricity
Flow and driving, the power of another electric magnet, are possessed by bias current and the difference driving of control electric current under Differential Driving pattern
The possibility of forward and reverse active force is produced, if ignoring iron core magnetization, this mode defines a linear electricity
Flow relation, improves the dynamic property of electromagnetic bearing；
(4) the oscillation crosswise control device of cardan shaft of the invention, after electromagnetic bearing, the rigidity of electromagnetic bearing and resistance
Buddhist nun is adjustable, and shafting oscillation crosswise frequency and damping ratio can change within the specific limits, so by changing the equivalent of electromagnetic bearing
Spring rate and damping, so that it may with maximum vibration transfer impedance when making shafting run under different rotating speeds, such as：It is applied to spiral shell
During rotation oar cardan shaft, propeller vibration can be reduced by transmission of the shafting to hull；Additionally, electromagnetic bearing can also produce dynamic
Power, is regarded as actuator, characteristic frequency vibration can be suppressed (such as propeller blade frequency vibration), eliminate the strong feature of shafting
Vibrate and its to the transmission of hull.
Certainly, the arbitrary product for implementing the present invention is it is not absolutely required to while reaching all the above advantage.
Description of the drawings
Below in conjunction with the accompanying drawings embodiments of the present invention are described further：
Structural representations of the Fig. 1 for the oscillation crosswise control device of the cardan shaft of embodiments of the invention；
Structure charts of the Fig. 2 for the electromagnetic bearing of embodiments of the invention；
Control drawings of the Fig. 3 for the electromagnetic bearing in the single-degree-of-freedom direction of embodiments of the invention.
Label declaration：1- rotors, 2- stern bearings, 3- intermediate bearings, 4- thrust bearings, 5- electromagnetic bearing components, 6- counterweights,
7- motors；
51- electromagnetic bearings, 52- displacement transducers, 53- controllers, 54- power amplifiers；
511- electric magnet, 512- coils, 513- shells.
Specific embodiment
Below embodiments of the invention are elaborated, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following enforcements
Example.
With reference to Fig. 1-Fig. 2, the present embodiment is described in detail to the oscillation crosswise control device of the cardan shaft of the present invention, such as
It is its structural representation described in Fig. 1, which includes：Stern bearing 2, intermediate bearing 3 and the thrust being sequentially distributed along the axial direction of rotor 1
Bearing 4, one end connection counterweight 6 of the close stern bearing 2 of rotor 1, other end connection motor 7.Propulsion shaft device also includes：Electromagnetism
Bearing assembly 5, which includes：Electromagnetic bearing 51, displacement transducer 52, controller 53 and power amplifier 54.Electromagnetic bearing 51
Also along the axial direction distribution of rotor 1, in the present embodiment, electromagnetic bearing 51 is located between intermediate bearing 3 and thrust bearing 4 and close
Intermediate bearing 3.Electromagnetic bearing 51 includes：Two groups of electromagnet assemblies, electromagnet assembly are arranged on stator, and rotor 1 is suspended in electricity
In magnetic field produced by magnet assemblies.Displacement transducer 52 is installed on electromagnetic bearing 51, displacement transducer 52 and controller 53
It is connected, controller 53 is connected with power amplifier 54, and power amplifier 54 is connected with electromagnetic bearing 51；Displacement transducer 52 is used for
Detection rotor 1 deviates the displacement of reference point, and by the displacement transmission for detecting to controller 53, and controller 53 will be for will receive
Displacement be converted to control signal, and control signal is transferred to into power amplifier 54, power amplifier 54 will be for will receive
Control signal be converted to control electric current, and control electric current is transferred to into electromagnetic bearing 51, control electric current is used to control electromagnetic axis
51 generation magnetic force are held so that rotor maintains levitation position constant.
Every group of electromagnet assembly includes two symmetrical electric magnet 511, and four electric magnet of electromagnet assembly are along circle
Zhou Junbu, two groups of electromagnet assemblies are respectively used to control electromagnetic bearing in vibration vertically and horizontally.Electromagnetic bearing is also wrapped
Include：Coil 512 and shell 513, coil 512 are wrapped on electric magnet 511, and shell 513 is located at the outside of electric magnet 511, this
Place's shell 513 is stator, and shell 513 for magnetic conductor, and the structure chart of electromagnetic bearing is as shown in Figure 2.In the present embodiment, electromagnetism
Ferrum 511 is U-shape structure, and each electric magnet 511 includes two magnetic poles, in different embodiments, or the structure of other shapes,
The number of magnetic poles of each electric magnet 511 also differs and is set to two.In different embodiments, can lead between shell 513 and electric magnet 511
Cross bolt connection, it is also possible to be integrated.
In preferred embodiment, the control of two electric magnet of every group of electromagnet assembly can adopt Differential Driving pattern, its
In an electric magnet electromagnetic force by bias current and control electric current and drive, the electromagnetic force of another electric magnet is by biased electrical
Stream is driven with the difference of control electric current, and total Electromagnetic Control power of this group of electromagnet assembly is the difference of the electromagnetic force of two electric magnet.Partially
Electric current is put for DC current of the power amplifier when not having input signal, so, when signal is zero, output be not zero but
One on the occasion of；When signal code for it is negative when, output be not for zero but diminish.The active force that two electric magnet are produced to rotor is all
It is suction, it is in opposite direction, it is the difference of two electromagnetic forces with joint efforts.It is illustrated in figure 3 the electromagnetic bearing in one of degree of freedom direction
Control drawing, two electric magnet of the group are controlled using same controller, and in different embodiments, two electric magnet also may be used
It is respectively controlled using two independent controllers.The control of the electromagnetic bearing in another degree of freedom direction can be obtained in the same manner.
In different embodiments, electromagnetic bearing is may also be disposed between stern bearing 2 and intermediate bearing 3, and near intermediate bearing
3；May also be disposed between stern bearing 2 and intermediate bearing 3, and near stern bearing 2；May also be disposed on stern bearing 2 and counterweight 6 it
Between, and near stern bearing 2.
In different embodiments, coil 412 can be also wrapped on coil rack, and coil rack is fixed on electric magnet 411.
The propulsion shaft device of the present invention can be used for propeller cardan shaft, can be also used for the cardan shaft of other rotors.
, using after electromagnetic bearing, as the rigidity of electromagnetic bearing is adjustable with damping, shafting is horizontal for the propulsion shaft device of the present invention
Can change within the specific limits to frequency of vibration and damping ratio, so by equivalent spring rigidity and the resistance of change electromagnetic bearing
Buddhist nun, so that it may with maximum vibration transfer impedance when making shafting run under different rotating speeds, when being such as used for propeller cardan shaft, can
Reduce propeller vibration by transmission of the shafting to hull；Additionally, electromagnetic bearing can also produce dynamic force, start is regarded as
Device, can suppress (such as propeller blade frequency vibration) to characteristic frequency vibration, eliminate the strong eigen vibration of shafting and its to hull
Transmission.
Only the preferred embodiments of the present invention disclosed herein, this specification are chosen and are specifically described these embodiments, are
In order to preferably explain the principle and practical application of the present invention, it is not limitation of the invention.Any those skilled in the art
The modifications and variations done in the range of description, all should fall in the range of the present invention is protected.
Claims (8)
1. the oscillation crosswise control device of a kind of cardan shaft, it is characterised in that include：Along the stern tube shaft that the axial direction of rotor is sequentially distributed
Hold, intermediate bearing and thrust bearing；
Also include：Electromagnetic bearing component, the electromagnetic bearing component include：Electromagnetic bearing, displacement transducer, controller and work(
Rate amplifier；
, also along the axial direction distribution of the rotor, the electromagnetic bearing is near the intermediate bearing or near described for the electromagnetic bearing
Stern bearing；The electromagnetic bearing includes：Two groups of electromagnet assemblies, the electromagnet assembly are arranged on stator, and the rotor hangs
Float in the magnetic field produced by the electromagnet assembly；
Institute's displacement sensors are installed on the electromagnetic bearing, and institute's displacement sensors are connected with the controller, the control
Device processed is connected with the power amplifier, and the power amplifier is connected with the electromagnetic bearing；Institute's displacement sensors are used for
Detect that the rotor deviates the displacement of reference point, and the controller, the controller are given by the displacement transmission for detecting
For the displacement for receiving is converted to control signal, and the control signal is transferred to into the power amplifier, institute
Power amplifier is stated for the control signal for receiving is converted to control electric current, and the control electric current is transferred to into institute
Electromagnetic bearing is stated, the control electric current is used to control the electromagnetic bearing generation magnetic force so that the rotor maintains levitation position
It is constant；
Per group of electromagnet assembly includes two symmetrical electric magnet, four electric magnet of the electromagnet assembly
It is uniformly distributed along the circumference, electromagnet assembly described in two groups is respectively used to control the electromagnetic bearing in vibration vertically and horizontally.
2. the oscillation crosswise control device of cardan shaft according to claim 1, it is characterised in that the electromagnetic bearing is adopted
Differential Driving pattern, the electromagnetic force of one of them electric magnet of per group of electromagnet assembly is by the power amplifier
Bias current and control electric current and drive, the bias current of the electromagnetic force of another electric magnet by the power amplifier
Drive with the difference of control electric current, total Electromagnetic Control power of the group electromagnet assembly be two electric magnet electromagnetic force it
Difference.
3. the oscillation crosswise control device of cardan shaft according to claim 1, it is characterised in that the electromagnetic bearing is also wrapped
Include：Shell, coil and coil rack, wherein,
The shell is located at the outside of the electromagnet assembly, and the shell is stator, and the shell is magnetic conductor；
The coil is wrapped on the coil rack；
The coil rack is fixed on the electromagnet assembly.
4. the oscillation crosswise control device of cardan shaft according to claim 3, it is characterised in that the shell and the electricity
It is bolted to connection between magnet assemblies.
5. the oscillation crosswise control device of cardan shaft according to claim 1, it is characterised in that each described electric magnet is in
U-shaped, each described electric magnet includes at least two magnetic poles.
6. the oscillation crosswise control device of cardan shaft according to claim 1, it is characterised in that the electromagnet assembly
Rigidity and damping can be adjusted.
7. the oscillation crosswise control device of cardan shaft according to claim 1, it is characterised in that institute's displacement sensors bag
Include multiple, the displacement being both provided with each described electric magnet on institute's displacement sensors, and each described electric magnet is passed
The number of sensor is one or more.
8. the oscillation crosswise control device of cardan shaft according to claim 1, it is characterised in that the stern bearing and/or
The intermediate bearing is water lubricated rubber bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610952514.6A CN106545574A (en) | 2016-10-27 | 2016-10-27 | A kind of oscillation crosswise control device of cardan shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610952514.6A CN106545574A (en) | 2016-10-27 | 2016-10-27 | A kind of oscillation crosswise control device of cardan shaft |
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| Publication Number | Publication Date |
|---|---|
| CN106545574A true CN106545574A (en) | 2017-03-29 |
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|---|---|---|---|
| CN201610952514.6A Pending CN106545574A (en) | 2016-10-27 | 2016-10-27 | A kind of oscillation crosswise control device of cardan shaft |
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Cited By (12)
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|---|---|---|---|---|
| CN107222041A (en) * | 2017-05-16 | 2017-09-29 | 浙江大学 | Tangential vibrations to motor stator tooth carry out the toothing of active control |
| CN107222057A (en) * | 2017-05-16 | 2017-09-29 | 浙江大学 | The stator structure for carrying out active control is vibrated to motor stator |
| CN107276299A (en) * | 2017-05-16 | 2017-10-20 | 浙江大学 | The end cover structure for carrying out active control is vibrated to motor stator end cap |
| CN107299957A (en) * | 2017-06-06 | 2017-10-27 | 哈尔滨工程大学 | A kind of shafting vibration restraining device |
| CN109292069A (en) * | 2018-11-30 | 2019-02-01 | 南京海琦娜游艇制造有限公司 | Magnetic suspension ships and light boats shafting |
| CN109630545A (en) * | 2018-12-17 | 2019-04-16 | 燕山大学 | A kind of Single Degree of Freedom Magnetic liquid dual suspension bearing double closed-loop control system and method |
| CN109739275A (en) * | 2019-01-03 | 2019-05-10 | 武汉理工大学 | A kind of two-way active electromagnetic control system for marine propulsion shafting vibration |
| CN109899442A (en) * | 2019-03-20 | 2019-06-18 | 中国石油大学(华东) | A kind of equipment for inhibiting of vibration for rotor |
| CN111749986A (en) * | 2020-06-15 | 2020-10-09 | 中国舰船研究设计中心 | Transverse vibration active control device for propulsion shaft |
| CN113685487A (en) * | 2021-08-30 | 2021-11-23 | 武汉理工大学 | Double-channel shafting transverse vibration active control device |
| CN113864334A (en) * | 2021-09-24 | 2021-12-31 | 浙江翰翔科技有限公司 | Rotor device containing electromagnetic device and dynamic air-bearing journal bearing |
| CN114810826A (en) * | 2022-03-30 | 2022-07-29 | 清华大学 | Zero bias control method and device of magnetic bearing and magnetic bearing |
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