CN111853059A - Ampere force compensation mechanical CMG and method for actively prolonging service life - Google Patents
Ampere force compensation mechanical CMG and method for actively prolonging service life Download PDFInfo
- Publication number
- CN111853059A CN111853059A CN202010702422.9A CN202010702422A CN111853059A CN 111853059 A CN111853059 A CN 111853059A CN 202010702422 A CN202010702422 A CN 202010702422A CN 111853059 A CN111853059 A CN 111853059A
- Authority
- CN
- China
- Prior art keywords
- rotor
- cmg
- mechanical
- ampere
- flywheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000002146 bilateral effect Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims 1
- 238000011967 cystometrography Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005339 levitation Methods 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
- F16C32/0406—Magnetic bearings
- F16C32/044—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
- 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
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0457—Details of the power supply to the electromagnets
-
- 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
- F16C32/0459—Details of the magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses an ampere force compensation mechanical CMG and a method for actively improving the service life of the CMG, which comprises a shell (11) and a flywheel (12) arranged in the shell, wherein the flywheel is arranged on the shell through a second shaft (15) and a mechanical bearing (13'), one end of the second shaft is provided with an ampere force magnetic bearing (14), the ampere force magnetic bearing comprises a stator (141) fixedly connected with the shell, a rotor (142) fixedly connected with the flywheel and a magnetic bearing controller, the stator comprises a coil framework (1411) and two electromagnetic coils (1412) which are symmetrically arranged, the rotor comprises a rotor magnetic yoke (1421) and two layers of permanent magnets (1422) arranged in the rotor magnetic yoke, a closed magnetic circuit is formed between the rotor magnetic yoke and the two layers of permanent magnets, the stator is arranged in the closed magnetic circuit in the rotor magnetic yoke, the two electromagnetic coils are mutually connected in series and are electrically connected with the magnetic, the control currents in the two solenoids are in opposite directions.
Description
Technical Field
The invention relates to a mechanical Control Moment Gyroscope (CMG), in particular to an ampere force compensation mechanical CMG and a method for actively prolonging the service life of the CMG.
Background
The Control Moment Gyroscope (CMG) is a core key component of an attitude control system of a large-scale spacecraft such as a space station and various agile maneuvering satellite platforms, and the service life of the CMG directly influences the service life of the large-scale spacecraft and the agile satellite platforms.
As shown in fig. 1, the CMG mainly includes a gyro room 1 and a supporting frame 2, the gyro room 1 is mounted on the supporting frame 2 through a first shaft 3 and a bearing, the supporting frame 2 provides a rotational degree of freedom and a servo driving system of the gyro room 1, the gyro room 1 is mainly composed of a housing 11 and a flywheel 12 disposed therein, and the flywheel 12 is mounted on the gyro room housing 11 through a second shaft 15 and a bearing 13. Depending on the form of support of the flywheel 12, the CMGs can be classified into conventional mechanical CMGs and magnetic levitation CMGs. In a conventional mechanical CMG, a flywheel is supported by mechanical bearings such as balls, and in a magnetic levitation CMG, the flywheel is supported by magnetic bearings. The magnetic levitation CMG technology is complex, so that the practical application is few, the existing large-scale spacecraft attitude control executing mechanism at home and abroad mainly adopts the traditional mechanical CMG, and more engineering experience and test data are accumulated through in-orbit operation, but some problems are exposed, mainly the problems of the reliability and the service life of a bearing assembly of a mechanical CMG flywheel.
At present, the service life of the mechanical CMG is still difficult to meet the requirement of a long-service-life spacecraft. The lifetime of the mechanical bearings supporting the flywheel is one of the main factors determining the lifetime of the mechanical CMG. When the mechanical CMG is operated, as shown in fig. 1, the gyro-house 1 rotates around the first shaft 3 on the supporting frame 2, the direction of angular momentum of the flywheel 12 changes, and a large gyro moment T is generatedgroThe moment T of the gyrogroWill react on the bearing (mechanical bearing) 13 to form radial forces with equal magnitude and opposite direction in the upper and lower bearings 13. The mechanical bearing bears gyro moment TgroHuge alternating load brought by reaction and severe working conditions can bring obvious transformation ratio of resistance torque of the mechanical bearing and influence the rotating speed stability of the flywheel on one hand, and on the other hand, the large alternating load brings great influence on the service life of the mechanical bearing. The main solution to this problem is to passively improve the mechanical performance of the mechanical bearings by using new materials, new structures, new lubrication technologies, etc., or to reduce the load borne by a single mechanical bearing by increasing the number of mechanical bearings and increasing the distance between the mechanical bearings. These measures will cause a significant increase in the cost of the mechanical CMG and it is still difficult to meet the requirements of spacecraft for CMG life. Increasing the number of mechanical bearings will also result in increased CMG volume and weight, even for high speed flywheel rotor The decrease in the degree.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a mechanical CMG (China Mobile gateway) capable of improving the working condition of a flywheel bearing, improving the long-term stable working reliability and prolonging the service life of the flywheel bearing and a method for actively prolonging the service life of the mechanical CMG. In order to solve the technical problem, the invention provides a gyroscopic room structure of gyroscopic moment load ampere force compensation mechanical CMG, which comprises a shell and a flywheel arranged in the shell, wherein the flywheel is arranged on the shell through a second shaft and a mechanical bearing, and the gyroscopic room structure comprises:
one end of the second shaft is provided with an ampere force magnetic bearing;
the ampere-force magnetic bearing comprises a stator fixedly connected with a shell, a rotor fixedly connected with a flywheel and a magnetic bearing controller, wherein the stator comprises a coil framework and two electromagnetic coils which are embedded in the coil framework and are arranged in a bilateral symmetry mode, the rotor comprises a rotor magnetic yoke and two layers of permanent magnets arranged in the rotor magnetic yoke, a closed magnetic circuit is formed between the rotor magnetic yoke and the two layers of permanent magnets, the stator is arranged in the closed magnetic circuit in the rotor magnetic yoke, the two electromagnetic coils are connected in series and are electrically connected with the magnetic bearing controller through a power amplifier, and the directions of control currents in the two electromagnetic coils are opposite.
Further, the rotor is integrated with the flywheel.
Further, the stator and the rotor are both of annular structures.
Furthermore, the coil framework is made of light non-magnetic and non-conductive materials, such as glass fiber reinforced plastics and nylon, through machining.
Furthermore, the electromagnetic coils are formed by winding polyurethane enameled copper wires and then dipping in paint and drying, and the number of turns is the same.
Furthermore, the electromagnetic coil is embedded in a preformed groove of the coil framework, and the electromagnetic coil and the coil framework are encapsulated into a whole by epoxy resin.
Furthermore, the two layers of permanent magnets are magnetized along the radial direction of the two layers of permanent magnets, the magnetizing direction of the upper layer of permanent magnet faces inwards, and the magnetizing direction of the lower layer of permanent magnet faces outwards, so that the closed magnetic circuit is formed in the rotor. Or the two layers of permanent magnets are magnetized along the radial direction of the two layers of permanent magnets respectively, the magnetizing direction of the upper layer of permanent magnet faces outwards, and the magnetizing direction of the lower layer of permanent magnet faces inwards, so that the closed magnetic circuit is formed in the rotor.
In order to solve the technical problem, the invention also provides a mechanical CMG which comprises the gyro room structure.
In order to solve the technical problem, the invention further provides a method for actively prolonging the service life of the mechanical CMG, wherein the gyro room of the mechanical CMG comprises a shell and a flywheel arranged in the shell, the flywheel is arranged on the shell through a second shaft and a mechanical bearing, and the method comprises the following steps:
One end of the second shaft is provided with an ampere force magnetic bearing;
the ampere-force magnetic bearing comprises a stator fixedly connected with a shell, a rotor fixedly connected with a flywheel and a magnetic bearing controller, wherein the stator comprises a coil framework and two electromagnetic coils which are embedded in the coil framework and are arranged in a bilateral symmetry manner, the rotor comprises a rotor magnetic yoke and two layers of permanent magnets arranged in the rotor magnetic yoke, a closed magnetic circuit is formed between the rotor magnetic yoke and the two layers of permanent magnets, the stator is arranged in the closed magnetic circuit in the rotor magnetic yoke, the two electromagnetic coils are mutually connected in series and are electrically connected with the magnetic bearing controller through a power amplifier, and the directions of control currents in the two electromagnetic coils are opposite;
when the mechanical CMG works, the servo driving system of the mechanical CMG obtains the rotation angular speed of the gyro room and transmits the rotation angular speed to the magnetic bearing controller, so that the magnetic bearing controller actively generates a control signal, the power amplifier generates corresponding control current according to the control signal and applies the control current to the two electromagnetic coils in opposite directions, the two electromagnetic coils are acted by ampere force in a closed magnetic circuit provided by the rotor, the two electromagnetic coils correspondingly generate axial reaction forces with equal magnitude and opposite directions on the rotor, the reaction forces generated by the two electromagnetic coils form a compensation torque acted on the rotor, and the compensation torque is equal in magnitude and opposite in direction to the gyro torque acted on the flywheel so as to offset the gyro torque.
The invention adds an ampere-force magnetic bearing at one end of a flywheel rotating shaft (second shaft) in a gyro room of the traditional mechanical CMG, fixedly connects a rotor of the ampere-force magnetic bearing and a flywheel into a whole, forms a closed magnetic circuit in the rotor, fixes a stator on a gyro room shell, symmetrically arranges two electromagnetic coils in the stator, leads control current which changes according to the rotation angular speed of the gyro room into the two electromagnetic coils, the two electromagnetic coils are acted by ampere force in the closed magnetic circuit provided by the rotor, the two electromagnetic coils correspondingly generate axial reaction force with equal size and opposite direction to the rotor, the reaction force generated by the two electromagnetic coils forms compensation torque acted on the rotor, and the compensation torque is equal in size and opposite in direction to the gyro torque so as to counteract the gyro torque generated when the gyro room rotates and eliminate the gyro torque load borne by the mechanical bearing of the flywheel, the working condition of the high-speed mechanical bearing assembly is improved, the long-term stable working reliability and the service life of the high-speed mechanical bearing assembly are improved, and the service life and the stability of the mechanical CMG are greatly improved.
Compared with the prior art, the invention has the advantages that: the system can actively generate compensation torque with the same magnitude and the opposite direction to the gyro torque according to the rotation angular speed of the CMG gyro room so as to offset the gyro torque borne by the flywheel rotor, thereby obviously improving the working condition of a high-speed mechanical bearing in the gyro room and further improving the service life and the stability of the CMG.
Drawings
FIG. 1 is a schematic diagram of a Control Moment Gyroscope (CMG);
FIG. 2 is a schematic view of a mechanical CMG gyro chamber structure with an ampere-force magnetic bearing added thereto according to the present invention;
FIG. 3 is a schematic diagram of the electrical connections and principles of the present invention;
fig. 4 is a schematic structural diagram of the control system of the present invention.
In the figure:
1-a top house, wherein the top house is provided with a top,
11-a housing, wherein the housing is provided with a plurality of grooves,
12-a flywheel, which is provided with a flywheel,
13-bearing, 13' -bearing,
a 14-ampere force magnetic bearing is adopted,
141-a stator, the stator being,
1411-the coil former is set in the coil,
1412-an electromagnetic coil, which is provided with a magnetic core,
142-the rotor of the motor-generator,
1421-the magnetic yoke of the rotor,
1422-the permanent magnet or magnets-the permanent magnet,
15-the second axis of rotation of the shaft,
2-a support frame for supporting the device,
3-the first axis of the shaft,
4-closing the magnetic circuit, and closing the magnetic circuit,
omega-the rotational speed of the flywheel,
-gyro-room rotational angular velocity.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
For convenience of description, the description of the relative position of the components (e.g., up, down, left, right, etc.) is described with reference to the layout direction of the drawings, and does not limit the structure of the patent.
Example 1:
referring to fig. 2 to 4, the method for compensating the mechanical CMG for gyroscopic moment load ampere force and actively improving the service life of the mechanical CMG according to the present invention comprises: an ampere-force magnetic bearing 14 is additionally arranged on a second shaft 15 in a gyro room 1 of a traditional mechanical CMG (the gyro room 1 comprises a shell 11 and a flywheel 12 arranged in the shell 11, and the flywheel 12 is arranged in the axial direction of the shell 1 through the second shaft 15 and a mechanical bearing 13'). The ampere-force magnetic bearing 14 includes a stator 141, a rotor 142, and a magnetic bearing controller (not shown), the stator 141 is fixedly connected to the case 11, and the rotor 142 is integrated with the flywheel 12. The stator 141 and the rotor 142 are both annular structures. The stator 141 is composed of a bobbin 1411 and two electromagnetic coils 1412 embedded in the bobbin and symmetrically arranged left and right. The rotor 142 is composed of a rotor yoke 1421 and a permanent magnet 1422 disposed therein. The bobbin 1411 is machined from glass reinforced plastic with good insulating properties. The electromagnetic coils 1412 are all wound by using commercially available polyurethane enameled copper wires with good conductivity And the coating is formed by baking the post-dip coating, and the number of turns is the same and is 100-150 turns. The electromagnetic coil 1412 is embedded in a groove reserved in the coil skeleton 1411 and is encapsulated with epoxy resin into a whole. The rotor yoke 1421 is made of commercially available electrically pure soft magnetic material with good magnetic conductivity. The cross-section of the rotor yoke 1421 is U-shaped. The permanent magnet 1422 is made of a high magnetic energy product neodymium iron boron material, and the whole permanent magnet 1422 is of a circular structure, is formed by sequentially splicing a plurality of arc permanent magnets, and is bonded on the inner surface of the rotor yoke 1421. In this embodiment, the permanent magnets 1422 are arranged in two layers, i.e., an upper layer and a lower layer, which are four in total, and each permanent magnet 1422 is magnetized along the radial direction thereof, wherein the magnetizing directions of the two upper permanent magnets are inward, and the magnetizing directions of the two lower permanent magnets are outward, so that the closed magnetic circuit 4 shown in fig. 3 is generated in the rotor. When the gyro moment T needs to be counteractedgroWhen the size of the permanent magnet is small, the number of the four permanent magnets can be reduced to two, namely only the inner two or only the outer two are reserved, and the magnetizing directions of the permanent magnets are unchanged.
As shown in fig. 4, when the mechanical CMG is working, the servo driving system obtains the rotation angular velocity of the gyro room and transmits the rotation angular velocity to the magnetic bearing controller, so that the magnetic bearing controller actively generates a control signal, the power amplifier generates a corresponding control current according to the control signal and applies the control current to the electromagnetic coils of the stator, and the rotation angular velocity of the gyro room constantly changes, so that the current passing through the two electromagnetic coils constantly changes, and the two electromagnetic coils are subjected to axial ampere forces with equal magnitude and opposite directions in a closed magnetic circuit provided by the rotor, and correspondingly generate axial reaction forces with equal magnitude and opposite directions to the rotor, and the axial reaction forces generated by the two electromagnetic coils form a compensation torque acting on the rotor, and the compensation torque is equal in magnitude and opposite in direction to the gyro torque. At this time, the radial force caused by the gyro moment applied to the mechanical bearing 13' will be eliminated, and the working condition will be improved, which will contribute to the improvement of the life and stability of the mechanical CMG. The rotation angular speed of the gyro room comprises the magnitude and the direction of the angular rate of rotation of the gyro room. For the determined structure of the gyro room and the rated flywheel rotating speed, the control current can be calculated off line according to the rotating angular speed of the gyro room in advance (the calculation method is known).
The ampere-force magnetic bearing 14 has the following specific application method of control current: referring to fig. 3, the left and right electromagnetic coils are connected in series to form a whole, and the wiring sequence is required to make the current direction in the coils meet the requirement of fig. 3: that is, in the illustrated cross section, the currents in the upper end portions of the left and right electromagnetic coils are both directed vertically into the paper, and the currents in the lower end portions are both directed vertically into the paper, or the currents in both electromagnetic coils are reversed. When the spinning top room 1 rotates at a certain rotating angular speed, the magnetic bearing controller controls the power amplifier to apply accurate control current to the electromagnetic coils according to the detected rotating angular speed of the spinning top room, the energized electromagnetic coils 1412 are acted by ampere force in the closed magnetic circuit 4 formed in the rotor, the two electromagnetic coils 1412 correspondingly generate axial reaction forces with equal magnitude and opposite directions to the rotor 142, and the two axial reaction forces form a resultant moment acting on the rotor 142, namely a compensation moment TcomThe compensating moment TcomWith gyroscopic moment T acting on the flywheel 12groEqual in size and opposite in direction. When the spinning top room 1 rotates towards the opposite direction, the required compensation torque T can be generated as long as the electromagnetic coil 1412 is applied with the reverse control current comTo counteract gyro moment Tgro。
The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.
Claims (9)
1. An ampere force compensation mechanical CMG, a gyro room of which comprises a shell (11) and a flywheel (12) arranged in the shell, the flywheel is arranged on the shell through a second shaft (15) and a mechanical bearing (13'), characterized in that,
one end of the second shaft is provided with an ampere force magnetic bearing (14);
the ampere-force magnetic bearing comprises a stator (141) fixedly connected with a shell, a rotor (142) fixedly connected with a flywheel and a magnetic bearing controller, wherein the stator comprises a coil framework (1411) and two electromagnetic coils (1412) which are embedded in the coil framework and arranged in a bilateral symmetry mode, the rotor comprises a rotor magnetic yoke (1421) and two layers of permanent magnets (1422) arranged in the rotor magnetic yoke, a closed magnetic circuit is formed between the rotor magnetic yoke and the two layers of permanent magnets, the stator is arranged in the closed magnetic circuit in the rotor magnetic yoke, the two electromagnetic coils are connected in series and are electrically connected with the magnetic bearing controller through a power amplifier, and the directions of control currents in the two electromagnetic coils are opposite.
2. The ampere-force compensated mechanical CMG of claim 1, wherein the rotor is integrated with a flywheel.
3. The ampere-force compensated mechanical CMG of claim 1, wherein the stator and rotor are both of annular ring configuration.
4. The ampere-force compensated mechanical CMG of claim 1, wherein the bobbin is machined from glass reinforced plastic.
5. The ampere-force compensation mechanical CMG of claim 1, wherein the electromagnetic coils are each wound from polyurethane enameled copper wire and then dip-painted and dried, and have the same number of turns.
6. The ampere-force compensated mechanical CMG of claim 1, wherein the electromagnetic coil is embedded in a pre-groove of a bobbin, and the electromagnetic coil and the bobbin are potted together with epoxy.
7. The ampere-force compensated mechanical CMG according to claim 1, wherein the two layers of permanent magnets are magnetized in radial directions, and the upper layer of permanent magnets are magnetized inwards and the lower layer of permanent magnets are magnetized outwards, so that the closed magnetic circuit (4) is formed in the rotor.
8. The ampere-force compensated mechanical CMG according to claim 1, wherein the two layers of permanent magnets are magnetized in radial directions, and the upper layer of permanent magnets are magnetized outwards and the lower layer of permanent magnets are magnetized inwards, so that the closed magnetic circuit (4) is formed in the rotor.
9. A method for actively improving the service life of a mechanical CMG, the mechanical CMG having a gyro housing comprising a housing (11) and a flywheel (12) disposed in the housing, the flywheel being mounted on the housing via a second shaft (15) and a mechanical bearing (13'), characterized in that:
one end of the second shaft is provided with an ampere force magnetic bearing (14);
the ampere-force magnetic bearing comprises a stator (141) fixedly connected with a shell, a rotor (142) fixedly connected with a flywheel and a magnetic bearing controller, wherein the stator comprises a coil framework (1411) and two electromagnetic coils (1412) embedded in the coil framework and arranged in a bilateral symmetry manner, the rotor comprises a rotor magnetic yoke (1421) and two layers of permanent magnets (1422) arranged in the rotor magnetic yoke, a closed magnetic circuit is formed between the rotor magnetic yoke and the two layers of permanent magnets, the stator is arranged in the closed magnetic circuit in the rotor magnetic yoke, the two electromagnetic coils are mutually connected in series and are electrically connected with the magnetic bearing controller through a power amplifier, and the directions of control currents in the two electromagnetic coils are opposite;
when the mechanical CMG works, the servo driving system of the mechanical CMG obtains the rotation angular speed of the gyro room and transmits the rotation angular speed to the magnetic bearing controller, so that the magnetic bearing controller actively generates a control signal, the power amplifier generates corresponding control current according to the control signal and applies the control current to the two electromagnetic coils in opposite directions, the two electromagnetic coils are acted by ampere force in a closed magnetic circuit provided by the rotor, the two electromagnetic coils correspondingly generate axial reaction forces with equal magnitude and opposite directions on the rotor, the reaction forces generated by the two electromagnetic coils form a compensation torque acted on the rotor, and the compensation torque is equal in magnitude and opposite in direction to the gyro torque acted on the flywheel so as to offset the gyro torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010702422.9A CN111853059A (en) | 2020-07-21 | 2020-07-21 | Ampere force compensation mechanical CMG and method for actively prolonging service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010702422.9A CN111853059A (en) | 2020-07-21 | 2020-07-21 | Ampere force compensation mechanical CMG and method for actively prolonging service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111853059A true CN111853059A (en) | 2020-10-30 |
Family
ID=73001274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010702422.9A Pending CN111853059A (en) | 2020-07-21 | 2020-07-21 | Ampere force compensation mechanical CMG and method for actively prolonging service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111853059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146669A (en) * | 2021-12-24 | 2022-03-08 | 江苏中信国安新材料有限公司 | Rubber mixing and dissolving system and process in polystyrene production |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219714A (en) * | 2007-12-26 | 2008-07-16 | 北京航空航天大学 | Double-frame magnetic suspension control moment gyro |
| CN104908978A (en) * | 2015-06-05 | 2015-09-16 | 北京航空航天大学 | Five-degree-of-freedom gyro case structure |
| CN105136132A (en) * | 2015-09-02 | 2015-12-09 | 中国人民解放军装备学院 | High-torque magnetic levitation control sensitive spinning top |
| EP2955114A1 (en) * | 2013-03-25 | 2015-12-16 | Korea Aerospace Research Institute | Control moment gyroscope |
| CN108683292A (en) * | 2018-05-04 | 2018-10-19 | 江苏大学 | A kind of vehicle-mounted magnetic-suspension flywheel energy-storage cell |
| CN110435931A (en) * | 2019-08-12 | 2019-11-12 | 北京航空航天大学 | A kind of magnetic suspension control moment gyro high speed rotor device |
-
2020
- 2020-07-21 CN CN202010702422.9A patent/CN111853059A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219714A (en) * | 2007-12-26 | 2008-07-16 | 北京航空航天大学 | Double-frame magnetic suspension control moment gyro |
| EP2955114A1 (en) * | 2013-03-25 | 2015-12-16 | Korea Aerospace Research Institute | Control moment gyroscope |
| CN104908978A (en) * | 2015-06-05 | 2015-09-16 | 北京航空航天大学 | Five-degree-of-freedom gyro case structure |
| CN105136132A (en) * | 2015-09-02 | 2015-12-09 | 中国人民解放军装备学院 | High-torque magnetic levitation control sensitive spinning top |
| CN108683292A (en) * | 2018-05-04 | 2018-10-19 | 江苏大学 | A kind of vehicle-mounted magnetic-suspension flywheel energy-storage cell |
| CN110435931A (en) * | 2019-08-12 | 2019-11-12 | 北京航空航天大学 | A kind of magnetic suspension control moment gyro high speed rotor device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146669A (en) * | 2021-12-24 | 2022-03-08 | 江苏中信国安新材料有限公司 | Rubber mixing and dissolving system and process in polystyrene production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109515755B (en) | Five-freedom-degree single-frame magnetic suspension control moment gyroscope | |
| EP2372886B1 (en) | Linear motor | |
| EP3506463A1 (en) | Flywheel energy storage with permanent magnet, induction, or variable reluctance machine | |
| CN104201935B (en) | A kind of four-degree-of-freedom magnetically levitated flywheel | |
| US8581452B2 (en) | Motor for high temperature applications | |
| JPH01279116A (en) | Magnetic bearing to which permanent magnet receiving holding power in axial direction is mounted | |
| CN106402159A (en) | Permanent magnet bias magnetic suspension rotating shaft | |
| CN110848253A (en) | Three-degree-of-freedom radial-axial integrated hybrid magnetic bearing | |
| CN113162314B (en) | Three-degree-of-freedom magnetic suspension switch reluctance integrated motor | |
| CN109039004A (en) | A kind of magnetic levitation system based on Halbach array | |
| CN109322973B (en) | Five-degree-of-freedom magnetic suspension flywheel | |
| CN204696837U (en) | Motor with a stator having a stator core | |
| CN111853059A (en) | Ampere force compensation mechanical CMG and method for actively prolonging service life | |
| CN115001183A (en) | Magnetic suspension switched reluctance motor and suspension force control device, method and system thereof | |
| CN109229426B (en) | Five-freedom-degree double-frame magnetic suspension control moment gyroscope | |
| CN113037001B (en) | Flywheel energy storage device based on outer rotor bearingless permanent magnet synchronous motor | |
| CN112065856B (en) | Four-pole internal and external double-rotor hybrid magnetic bearing | |
| CN111120510B (en) | High-rigidity spherical Lorentz deflection bearing with auxiliary air gap | |
| CN110071598B (en) | Vehicle-mounted flywheel battery with radial gyro effect resistance | |
| CN209892623U (en) | Axial radial electromagnetic magnetic bearing | |
| CN111810535B (en) | Electromagnetic force compensation mechanical CMG and method for actively prolonging service life | |
| CN115949672A (en) | Magnetic suspension bearing and magnetic suspension bearing system | |
| CN112332708B (en) | Five-degree-of-freedom magnetic suspension switched reluctance motor | |
| CN211574037U (en) | Cross-tooth quadrupole hybrid magnetic bearing with novel structure | |
| CN108547867B (en) | Axial self-loop three-degree-of-freedom spherical hybrid magnetic bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |