CN110030199B - Normally-conducting attraction type magnetic suspension rotating system based on electromagnetic chuck - Google Patents
Normally-conducting attraction type magnetic suspension rotating system based on electromagnetic chuck Download PDFInfo
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- CN110030199B CN110030199B CN201910250299.9A CN201910250299A CN110030199B CN 110030199 B CN110030199 B CN 110030199B CN 201910250299 A CN201910250299 A CN 201910250299A CN 110030199 B CN110030199 B CN 110030199B
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- electromagnetic chuck
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- magnetic conduction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/088—Ceiling fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
Abstract
The invention discloses a normally-conducting attraction type magnetic levitation rotating system based on an electromagnetic chuck, which comprises a fixed part and a non-contact levitation part arranged below the fixed part, and is characterized in that: the fixing part comprises at least three groups of intelligent electromagnetic chucks, a permanent magnet, a power supply system and a fixing structure, and the fixing structure integrates the fixing part into a complete structure and is connected with a surrounding rigid structure; the suspension part comprises at least one magnetic conduction track and a supporting structure, and the supporting structure integrates the suspension part into a complete structure; the magnetic suspension rotating system adopts industrial standard parts, such as electromagnetic chucks, does not relate to precision machining, does not relate to complex geometric shapes, has the advantages of compact structure, easiness in installation, simplicity in operation, appropriate price and the like, simultaneously has the advantages of no mechanical contact, stability and quietness in operation, high efficiency, energy conservation, environmental friendliness and the like, and is used for industrial bearings and the like.
Description
Technical Field
The invention belongs to the technical field of magnetic levitation rotation supporting devices, and particularly relates to a normally-conducting attraction type magnetic levitation rotation system based on an electromagnetic chuck.
Background
Magnetic levitation is a modern levitation technology, the technology controls the relative position between two objects under the condition of non-contact through the acting force of a magnetic field, common implementation modes comprise normal conduction attraction type magnetic levitation, normal conduction repulsion type magnetic levitation and superconducting type magnetic levitation, and on the basis of magnetic levitation, a proper traction system is matched, so that a frictionless magnetic levitation rotation system, such as a magnetic levitation ceiling fan or a magnetic levitation bearing, can be realized.
The conventional magnetic levitation rotating system usually adopts normally-conductive repulsion type magnetic levitation, occupies the space of the ground or a desktop, is poor in stability, is easy to cause instability rollover accidents, greatly increases the economic cost and the working difficulty, and therefore limits popularization and application of the conventional magnetic levitation rotating system in the field of household appliances or industry, and the electromagnetic chuck-based normally-conductive attraction type magnetic levitation rotating system is provided for the purposes.
Disclosure of Invention
The invention aims to provide a normally-conductive attraction type magnetic levitation rotation system based on an electromagnetic chuck, and aims to solve the problems that the conventional magnetic levitation rotation system provided in the background technology usually adopts normally-conductive repulsion type magnetic levitation, not only occupies the space of the ground or a desktop, but also has poor stability, is easy to generate instability rollover accidents, greatly increases the economic cost and the working difficulty, and limits the popularization and application of the system in the field of household appliances or industry.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a normal conduction attraction formula magnetic levitation rotating system based on electromagnet, includes fixed part and the non-contact's of setting in the fixed part below suspension portion, its characterized in that: the fixing part comprises at least three groups of intelligent electromagnetic chucks, a permanent magnet, a power supply system and a fixing structure, and the fixing structure integrates the fixing part into a complete structure and is connected with a surrounding rigid structure; the suspension part comprises at least one magnetic conduction track and a supporting structure, and the supporting structure integrates the suspension part into a complete structure; a magnetic field acting force is generated between the permanent magnet and the magnetic conduction track to balance the gravity of a part of the suspension part; the intelligent electromagnetic chuck comprises at least one electromagnetic chuck, a distance measuring assembly, a controller and a power amplifying circuit; the distance measuring assembly is arranged on the side corresponding to the electromagnetic chuck, measures and represents the non-contact distance between the adsorption surface of the electromagnetic chuck and the corresponding magnetic conduction track, transmits a distance signal to the controller, the controller generates a control signal according to a distance set value and the received distance signal, the power amplifying circuit adjusts the magnitude of direct current voltage at two ends of the electromagnetic chuck according to the control signal, and a magnetic field acting force is generated between the electromagnetic chuck and the magnetic conduction track, so that the suspension part is stably suspended below the fixed part; the intelligent electromagnetic chuck is electrically connected with the power supply system, and the power supply system provides electric quantity.
Preferably, the magnetic conduction track is made of a high magnetic conduction soft magnetic material, and the high magnetic conduction soft magnetic material comprises electrician pure iron, low carbon steel, silicon steel, iron-nickel alloy, iron-based or cobalt-based amorphous alloy and ferrite; the fixing structure and the supporting structure are made of non-ferrous materials, and the non-ferrous materials comprise plastics, carbon fibers, aluminum alloy and stainless steel.
Preferably, the distance measuring assembly adopts any one working mode of ultrasonic wave, infrared ray, Hall effect, laser or optical shielding area method; the controller adopts any one working mode of an analog control circuit or a digital control program.
Preferably, the fixed part is provided with a traction system stator, the suspension part is provided with a traction system rotor, and the traction system stator and the traction system rotor jointly form a traction system; the traction system adopts any one working mode of an alternating current asynchronous motor, an alternating current synchronous motor or a brushless direct current motor; the traction system stator drives the traction system rotor and drives the suspension part to rotate, and mechanical contact does not exist between the traction system stator and the traction system rotor.
Preferably, the fixed part is provided with a communication control system; the communication control system uploads the working state of the fixing part in a wireless communication mode, receives a user instruction and adjusts the setting parameters of the fixing part, such as the distance setting value of the intelligent electromagnetic chuck or the output power of the stator of the traction system.
Preferably, the fixing part is provided with a supporting structure; the supporting structure can mechanically support the suspension part under the condition that the intelligent electromagnetic chuck is powered off or fails.
Preferably, the suspension part is provided with a plurality of blades; the blades are attached to the outside of the support structure and promote air convection under rotating conditions.
Preferably, the fixing part is provided with three groups of intelligent electromagnetic chucks which are distributed in an equilateral triangle shape, and the adsorption surfaces of the electromagnetic chucks are positioned on the same horizontal plane and are arranged downwards; the magnetic conduction track is of a flat ring structure, is arranged below the adsorption surface of the electromagnetic chuck and is positioned at the upper part of the suspension part; and the magnetic field acting force between the electromagnetic chuck and the magnetic conduction track balances the gravity of part of the suspension part.
Preferably, the fixing part is provided with three groups of intelligent electromagnetic chucks which are distributed in an equilateral triangle shape, and the adsorption surfaces of the electromagnetic chucks are positioned on the same cylindrical surface and arranged back to the symmetry axis; the magnetic conduction track is a cylindrical ring structure, is arranged on the outer side of the electromagnetic chuck adsorption surface, shares the same symmetry axis with the electromagnetic chuck adsorption surface, and is positioned at the lower part of the suspension part; the magnetic field acting force between the electromagnetic chuck and the magnetic conduction track balances the gravity of a part of the suspension part and the centrifugal force during the rotary motion so as to improve the stability of the rotary motion.
Compared with the prior art, the invention has the beneficial effects that:
1. the magnetic suspension rotating system of the invention adopts industrial standard parts, such as electromagnetic chucks, does not relate to precision machining, does not relate to complex geometric shapes, and has the advantages of compact structure, easy installation, simple operation, proper price and the like.
2. The suspension part is arranged below the fixed part, so that the integral gravity center of the suspension part is reduced, and the stability of the magnetic suspension rotating system is enhanced; meanwhile, the fixing part can be suspended below the ceiling to save the floor space.
3. No mechanical contact exists between the suspension part and the fixed part, and wearing parts such as pulleys, motors, bearings and the like are not needed; compared with a traditional mechanical rotating system, the magnetic suspension rotating system does not involve mechanical friction loss, so that the maintenance cost is effectively reduced, the magnetic suspension rotating system has the advantages of stable and quiet running, high efficiency, energy conservation, environmental protection and the like, and has absolute advantages in application scenes such as high rotating speed or overweight and the like.
4. The normally-conducting magnetic suspension rotating system applies the intelligent control system to adjust the magnetic field acting force between the electromagnetic chuck and the magnetic conduction track, and simultaneously has the functions of bearing and hanging two systems, thereby avoiding complex processing and installation, effectively reducing the hardware cost of the rotating system and greatly improving the stability of the rotating system.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic bottom view (in partial section) of the present invention;
FIG. 4 is a schematic perspective view of a fixing portion according to the present invention;
FIG. 5 is a front view of the fixing portion of the present invention;
FIG. 6 is a cross-sectional view of the fixing portion of the present invention;
FIG. 7 is a schematic perspective view of the suspension portion of the present invention;
FIG. 8 is a front view of the suspension portion of the present invention;
FIG. 9 is a cross-sectional view of the suspension of the present invention;
FIG. 10 is a schematic perspective view of the intelligent electromagnetic chuck of the present invention;
FIG. 11 is a schematic top view of the intelligent electromagnetic chuck of the present invention;
fig. 12 is a working schematic diagram of the intelligent electromagnetic chuck of the present invention.
In the figure: 1. a fixed part; 101. an intelligent electromagnetic chuck; 10101. an electromagnetic chuck; 10102. a ranging assembly; 10103. a controller; 10104. a power amplification circuit; 102. a permanent magnet; 103. a power supply system; 104. a fixed structure; 105. a traction system stator; 106. a communication control system; 107. a support structure; 2. a suspension section; 201a, a flat circular magnetic conduction track; 201b, a cylindrical ring magnetic conduction track; 202. a support structure; 203. a traction system rotor; 204. a blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 12, the present invention provides a technical solution: the utility model provides a normal conduction attraction formula magnetic levitation rotating system based on electromagnet, includes fixed part 1 and sets up the suspension portion 2 of non-contact in fixed part 1 below, its characterized in that: the fixing part 1 comprises an intelligent electromagnetic chuck 101, a permanent magnet 102, a power supply system 103 and a fixing structure 104, wherein the intelligent electromagnetic chuck 101 is provided with at least three groups, and the fixing structure 104 integrates the fixing part 1 into a complete structure and is connected with a surrounding rigid structure; the suspension part 2 comprises at least one magnetic conduction track 201 and a supporting structure 202, the magnetic conduction track 201 and the supporting structure 202 integrate the suspension part 2 into a complete structure; a magnetic field acting force is generated between the permanent magnet 102 and the magnetic conduction track 201, and the gravity of a part of the suspension part 2 is balanced; the intelligent electromagnetic chuck 101 comprises at least one electromagnetic chuck 10101, a distance measuring component 10102, a controller 10103 and a power amplifying circuit 10104, wherein the electromagnetic chucks 10101 are arranged; the distance measuring component 10102 is arranged on the side edge of the corresponding electromagnetic chuck 10101, the distance measuring component 10102 measures and represents the non-contact distance between the adsorption surface of the electromagnetic chuck 10101 and the corresponding magnetic conduction track 201, and transmits a distance signal to the controller 10103, the controller 10103 generates a control signal according to a distance set value and the received distance signal, the power amplifying circuit 10104 adjusts the magnitude of direct current voltage at two ends of the electromagnetic chuck 10101 according to the control signal, and a magnetic field acting force is generated between the electromagnetic chuck 10101 and the magnetic conduction track 201, so that the suspension part 2 is stably suspended below the fixing part 1; the intelligent electromagnetic chuck 101 is electrically connected with the power supply system 103, and the power supply system 103 provides electric quantity; a flat circular magnetic conductive track 201a is provided on the upper portion of the suspension portion 2, and a cylindrical magnetic conductive track 201b is provided on the lower portion of the suspension portion 2.
In order to enhance the magnetic field acting force generated between the electromagnetic chuck 10101 and the magnetic conduction track 201, in this embodiment, preferably, the magnetic conduction track 201 is made of a high magnetic conduction soft magnetic material, and the high magnetic conduction soft magnetic material includes electrical pure iron, low carbon steel, silicon steel, iron-nickel alloy, iron-based or cobalt-based amorphous alloy, and ferrite; the fixation structure 104 and the support structure 202 are of non-ferrous materials including plastic, carbon fiber, aluminum alloy, and stainless steel.
In order to effectively operate and use the system, in this embodiment, preferably, the distance measuring component 10102 adopts any one of an ultrasonic wave, an infrared ray, a hall effect, a laser, or an optical shading area method; the controller 10103 operates in any one of an analog control circuit and a digital control program.
In order to enhance the functionality of the rotating system, in the present embodiment, it is preferable that the fixed part 1 is provided with a traction system stator 105, the levitation part 2 is provided with a traction system rotor 203, and the traction system stator 105 and the traction system rotor 203 together form a traction system; the traction system adopts any one working mode of an alternating current asynchronous motor, an alternating current synchronous motor or a brushless direct current motor; the traction system stator 105 drives the traction system rotor 203 and brings the levitation part 2 into a rotational movement without mechanical contact between the traction system stator 105 and the traction system rotor 203.
In order to facilitate the user operation, in this embodiment, it is preferable that the fixed part 1 is provided with a communication control system 106; the communication control system 106 uploads the working state of the fixing part 1 in a wireless communication manner, and receives a user instruction and adjusts the setting parameters of the fixing part 1, such as the distance setting value of the intelligent electromagnetic chuck 101 or the output power of the traction system stator 105.
In order to enhance the safety of the rotating system, in the present embodiment, it is preferable that the fixing portion 1 is provided with a supporting structure 107; the holding structure 107 can mechanically hold the suspension part 2 in case of a power failure or failure of the intelligent electromagnetic chuck 101.
In order to enhance the functionality of the rotating system, in the present embodiment, it is preferable that the levitation part 2 is provided with a plurality of paddles 204; the paddles 204 are attached to the outside of the support structure 202 and can promote air convection under rotating conditions.
In order to enhance the stability of the rotating system, in the present embodiment, preferably, the fixing portion 1 is provided with three sets of intelligent electromagnetic chucks 101 distributed in an equilateral triangle, and the suction surfaces of the electromagnetic chucks 10101 are located on the same horizontal plane and are arranged facing downward; the magnetic conduction track 201 is a flat ring structure, is arranged below the adsorption surface of the electromagnetic chuck 10101, and is positioned at the upper part of the suspension part 2; the magnetic field acting force between the electromagnetic chuck 10101 and the magnetic conductive track 201 balances the gravity of a part of the suspension part 2.
In order to enhance the motion stability of the rotating system, in this embodiment, preferably, the fixing portion 1 is provided with three groups of intelligent electromagnetic chucks 101 distributed in an equilateral triangle, and the suction surfaces of the electromagnetic chucks 10101 are on the same cylindrical surface and arranged opposite to the symmetry axis; the magnetic conduction track 201 is a cylindrical ring structure, is arranged on the outer side of the adsorption surface of the electromagnetic chuck 10101, shares the same symmetry axis with the adsorption surface of the electromagnetic chuck 10101, and is positioned at the lower part of the suspension part 2; the magnetic field acting force between the electromagnetic chuck 10101 and the magnetic conductive track 201 balances the gravity of a part of the suspension part 2 and the centrifugal force during the rotation motion, so as to improve the stability of the rotation motion.
Example 2
Please refer to fig. 1 to 9; the fixed part 1 is provided with six groups of intelligent electromagnetic chucks 101, and the three groups are a set; the two sets are respectively positioned at the upper part and the lower part of the fixed part 1 and respectively correspond to the flat circular magnetic conduction track 201a at the upper part of the suspension part 2 and the cylindrical magnetic conduction track 201b at the lower part of the suspension part; the distance measurement components 10102 adopt TCRT5000 infrared distance sensors; three permanent magnets 102 are arranged between the three groups of intelligent electromagnetic chucks 101 on the upper part of the fixed part 1; a traction system stator 105 which is a composite structure of a coil and a silicon steel sheet is arranged in the middle of the fixing part 1; the middle part of the suspension part 2 is provided with a traction system rotor 203 which is a squirrel-cage induction rotor; the traction system stator 105 and the traction system rotor 203 jointly form a traction system, and the working mode of an alternating current asynchronous motor is adopted; the fixed part 1 is also provided with a power supply system 103, a communication control system 106 and a bearing structure 107; the fixing structure 104 integrates the fixing part 1 into a complete structure and is connected to the surrounding rigid structure; the outer side of the suspension part 2 is provided with a paddle 204; the support structure 202 integrates the suspended portion 2 into a complete structure. The suspension part 2 is stably suspended below the fixing part 1 and rotates to promote air convection, and can be used as a household ceiling fan.
The three groups of intelligent electromagnetic chucks 101 on the upper part of the fixing part 1 are distributed in an equilateral triangle, and the adsorption surfaces of the electromagnetic chucks 10101 are positioned on the same horizontal plane and are arranged downwards; the distance measuring components 10102 are respectively arranged on the side edges of the corresponding electromagnetic chucks 10101 and are right opposite to the upper surface of the flat circular magnetic conduction rail 201a on the upper part of the suspension part 2; correspondingly, the upper surface of the flat circular magnetic conductive track 201a is provided with a uniform reflective material, such as white paper. The three sets of intelligent electromagnetic chucks 101 define three stable equilibrium positions above the flat circular ring magnetic conductive track 201 a. According to the principle of "three points define a plane", the three stable equilibrium positions determine the spatial position of the suspended part 2 with respect to the fixed part 1. Permanent magnets 102 are arranged among the three groups of intelligent electromagnetic chucks 101. The magnetic field acting force between the permanent magnet 102 and the flat circular magnetic conduction track 201a can balance a part of the gravity borne by the suspension part 2, such as 80%, so as to save electric energy.
The three groups of intelligent electromagnetic chucks 101 at the lower part of the fixing part 1 are distributed in an equilateral triangle, and the adsorption surfaces of the electromagnetic chucks 10101 are positioned on the same cylindrical surface and arranged back to the symmetry axis; the distance measuring components 10102 are respectively arranged on the side edges of the corresponding electromagnetic chucks 10101 and are right opposite to the inner surface of the cylindrical ring magnetic conduction rail 201b at the lower part of the suspension part 2; correspondingly, the inner surface of the cylindrical ring magnetic conductive track 201b is provided with a uniform reflective material, such as white paper. The three groups of intelligent electromagnetic chucks 101 determine the same stable balance position at the inner side of the cylindrical ring magnetic conduction track 201b, so that the three groups of intelligent electromagnetic chucks 101 and the cylindrical ring magnetic conduction track 201b share the same symmetry axis.
A traction system stator 105 which is a composite structure of a coil and a silicon steel sheet is arranged in the middle of the fixing part 1; the middle part of the suspension part 2 is provided with a traction system rotor 203 which is a squirrel-cage induction rotor; the traction system stator 105 and the traction system rotor 203 together form a traction system and adopt the working mode of an alternating current asynchronous motor. The traction system stator 105 drives the traction system rotor 203 and brings the levitation part 2 into a rotational movement without mechanical contact between the traction system stator 105 and the traction system rotor 203. Particularly, the traction system stator 105 and the three groups of intelligent electromagnetic chucks 101 at the lower part of the fixing part 1 share the same symmetry axis, and the traction system rotor 203 and the cylindrical ring magnetic conduction track 201 share the same symmetry axis; therefore, the magnetic field acting force between the electromagnetic chuck 10101 and the cylindrical magnetic conductive track 201 balances the centrifugal force of the suspension part 2 during the rotation, provides a horizontal restoring force for stabilizing the suspension, and improves the stability of the rotation. It will be appreciated by those skilled in the art that the implementation of the traction system is not limited to the above.
The upper part of the fixed part 1 is provided with a communication control system 106 enabling a user to remotely control the operating state of the fixed part 1. The communication control system 106 uploads the operating state of the fixed part 1 in a wireless communication manner, and receives a user instruction and adjusts the setting parameters of the fixed part 1. The working state comprises a suspension distance, a load, a rotating speed, battery electric quantity, power consumption and the like; the setting parameters include the distance setting values of the groups of intelligent electromagnetic chucks 101, the output power of the traction system stator 105, and the like.
The upper part of the fixing part 1 is provided with a power supply system 103 for supplying electric energy to the intelligent electromagnetic chuck 101, the traction system stator 105 and the communication control system 106. The power supply system 103 includes functions of rectification, voltage transformation, power storage, and the like, and can be directly electrically connected with a civil or industrial alternating current or a direct current.
The fixed structure 104 and the supporting structure 202 are made of non-ferrous materials, including plastic, carbon fiber, aluminum alloy, stainless steel, and the like. Since there is no mechanical contact between the magnetic conductive track 201 and the intelligent electromagnetic chuck 101, plastic packaging, electroplating or other surface treatment can be performed on the surface of the magnetic conductive track 201 to optimize the corrosion prevention performance of the magnetic conductive track 201. The fixing structure 104 of the fixing part 1 is provided with a bearing structure 107, so that the consequences caused by the careless falling of the suspension part 2 are reduced. For example, in case of a power failure or failure of the intelligent electromagnetic chuck 101, the holding structure 107 may mechanically hold the suspension part 2.
As can be seen from the arrangement of the embodiment, in the implementation of the present invention, the number or structure of the intelligent electromagnetic chuck 101, the permanent magnet 102, the power supply system 103, the fixing structure 104, the traction system stator 105, the communication control system 106, the supporting structure 107, the magnetic conductive track 201, the supporting structure 202, the traction system rotor 203, the blades 204, and the like is not particularly limited, and it is only necessary to stably suspend and rotate the suspension portion 2 with respect to the fixing portion 1 under the interaction between the magnetic conductive track 201 and the intelligent electromagnetic chuck 101.
The working principle and the using process of the intelligent electromagnetic chuck are as follows: referring to fig. 10, 11 and 12, each set of smart electromagnetic chucks 101 includes at least one electromagnetic chuck 10101, a distance measuring assembly 10102, a controller 10103 and a power amplifying circuit 10104. The distance measurement component 10102 measures and represents the non-contact distance between the adsorption surface of the electromagnetic chuck 10101 and the corresponding magnetic conduction track 201, and transmits a distance signal to the controller 10103, the controller 10103 generates a control signal according to a distance set value and the received distance signal, the power amplification circuit 10104 adjusts the magnitude of the direct current voltage at the two ends of the electromagnetic chuck 10101 according to the control signal, and a magnetic field acting force is generated between the electromagnetic chuck 10101 and the magnetic conduction track 201, so that the magnetic conduction track 201 is suspended at a stable balance position determined by the intelligent electromagnetic chuck 101. By "stable equilibrium position" is meant that when the environmental disturbance causes the distance signal to be greater than the distance set point, the controller 10103 will increase the dc voltage across the electromagnet 10101, so that the magnetic field acting force between the electromagnet 10101 and the magnetic conductive track 201 increases, thereby decreasing the distance signal, and vice versa. The non-contact distance, or the suspension distance, between the electromagnetic chuck 10101 and the magnetic conductive track 201 is generally controlled to be between 0.1 mm and 10 mm, and is determined by a distance set value.
The distance measurement component 10102 measures and represents the non-contact distance between the adsorption surface of the electromagnetic chuck 10101 and the corresponding magnetic conduction track 201 by adopting any one working mode of ultrasonic wave, infrared ray, Hall effect, laser or light shielding area method. If optical principles, such as infrared or laser, are used, reflective materials are required to be installed at corresponding positions of the magnetic conductive track 201 or the supporting structure 202; if electromagnetic principles are used, such as the hall effect, suitable permanent magnets may be mounted at corresponding locations on the magnetically conductive track 201 or the support structure 202.
The controller 10103 processes the distance signal in an operating manner such as an analog control circuit or a digital control program to generate a control signal. If an analog control circuit is used, the controller 10103 is a PID (Proportional integral derivative) control circuit; if a digital control program is adopted, the controller 10103 carries out high-frequency sampling on the distance signal generated by the distance measuring component 10102 by means of the single chip microcomputer, and any one working mode of PID control, fuzzy control or predictive control is adopted.
The power amplifying circuit 10104 adjusts the magnitude of the dc voltage at the two ends of the electromagnetic chuck 10101 according to the control signal, and a magnetic field acting force is generated between the electromagnetic chuck 10101 and the magnetic conduction track 201, so that the suspension part 2 is suspended at a stable and balanced position corresponding to the fixing part 1. The power amplifier circuit 10104 may include functions such as amplification bias or inverse amplification, and may perform power amplification of the control signal by using a scheme that can be implemented in the related art.
In order to save electric energy, the magnetic conductive track 201 is made of a high magnetic conductive soft magnetic material so as to enhance the magnetic field acting force between the electromagnetic chuck 10101 and the magnetic conductive track 201. The high permeability soft magnetic material comprises electrician pure iron, low carbon steel, silicon steel, iron-nickel alloy, iron-based or cobalt-based amorphous alloy, ferrite and the like. In addition, in order to save electric energy, a permanent magnet 102 with a proper structure, a proper strength and a proper direction can be arranged beside the intelligent electromagnetic chuck 101 so as to enhance the magnetic field acting force between the fixed part 1 and the floating part 2 under the condition of no power supply. The term "suitable" means that a part of the gravity applied to the floating portion 2 can be balanced by the magnetic field acting force between the permanent magnet 102 and the magnetic conductive track 201, so that the intelligent electromagnetic chuck 101 can stably float with a smaller coil voltage. Note that since the electromagnetic chuck 10101 cannot generate a magnetic field repulsive force to the magnetic conductive track 201, the magnetic field acting force by the permanent magnet 102 should not be stronger than the gravity force received by the levitation part 2.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a normal conduction attraction formula magnetic levitation rotating system based on electromagnet, includes fixed part (1) and sets up in non-contact's of fixed part (1) below suspension portion (2), its characterized in that: the fixing part (1) comprises at least three groups of intelligent electromagnetic chucks (101), a permanent magnet (102), a power supply system (103) and a fixing structure (104), wherein the fixing part (1) is integrated into a complete structure by the fixing structure (104) and is connected with a surrounding rigid structure; the suspension part (2) comprises at least one magnetic conduction track (201) and a supporting structure (202), the magnetic conduction track (201) is provided with at least one magnetic conduction track, and the supporting structure (202) integrates the suspension part (2) into a complete structure; a magnetic field acting force is generated between the permanent magnet (102) and the magnetic conduction track (201) to balance the gravity of a part of the suspension part (2); the intelligent electromagnetic chuck (101) comprises at least one electromagnetic chuck (10101), a distance measuring assembly (10102), a controller (10103) and a power amplifying circuit (10104), and the electromagnetic chucks (10101) are arranged; the distance measuring component (10102) is arranged on the side corresponding to the electromagnetic chuck (10101), the distance measuring component (10102) measures and represents the non-contact distance between the adsorption surface of the electromagnetic chuck (10101) and the magnetic conduction track (201) corresponding to the adsorption surface, distance signals are transmitted to the controller (10103), the controller (10103) generates control signals according to distance set values and received distance signals, the power amplifying circuit (10104) adjusts the magnitude of direct current voltage at two ends of the electromagnetic chuck (10101) according to the control signals, and magnetic field acting force is generated between the electromagnetic chuck (10101) and the magnetic conduction track (201), so that the suspension part (2) is stably suspended below the fixing part (1); the intelligent electromagnetic chuck (101) is electrically connected with the power supply system (103), and the power supply system (103) provides electric quantity;
the fixing part (1) is provided with three groups of intelligent electromagnetic chucks (101) which are distributed in an equilateral triangle, and the adsorption surfaces of the electromagnetic chucks (10101) are positioned on the same cylindrical surface and arranged back to the symmetrical axis; the magnetic conduction track (201) is of a cylindrical ring structure, is arranged on the outer side of the adsorption surface of the electromagnetic chuck (10101), shares the same symmetry axis with the adsorption surface of the electromagnetic chuck (10101), and is positioned at the lower part of the suspension part (2); the magnetic field acting force between the electromagnetic chuck (10101) and the magnetic conduction track (201) balances the gravity of a part of the suspension part (2) and the centrifugal force during the rotary motion so as to improve the stability of the rotary motion.
2. The normally conductive attractive magnetic levitation rotation system based on the electromagnetic chuck as claimed in claim 1, wherein: the magnetic conduction track (201) is made of high magnetic conduction soft magnetic materials, and the fixing structure (104) and the supporting structure (202) are made of non-ferrous materials.
3. The normally conductive attractive magnetic levitation rotation system based on the electromagnetic chuck as claimed in claim 1, wherein: the distance measuring component (10102) adopts any one working mode of ultrasonic wave, infrared ray, Hall effect, laser or optical shielding area method; the controller (10103) adopts any one working mode of an analog control circuit or a digital control program.
4. The normally conductive attractive magnetic levitation rotation system based on the electromagnetic chuck as claimed in claim 1, wherein: the fixed part (1) is provided with a traction system stator (105), the suspension part (2) is provided with a traction system rotor (203), and the traction system stator (105) and the traction system rotor (203) jointly form a traction system; the traction system adopts any one working mode of an alternating current asynchronous motor, an alternating current synchronous motor or a brushless direct current motor; the traction system stator (105) drives the traction system rotor (203) and drives the suspension part (2) to rotate, and no mechanical contact exists between the traction system stator (105) and the traction system rotor (203).
5. The normally conductive attractive magnetic levitation rotation system based on the electromagnetic chuck as claimed in claim 1, wherein: the fixed part (1) is provided with a communication control system (106).
6. The normally conductive attractive magnetic levitation rotation system based on the electromagnetic chuck as claimed in claim 1, wherein: the fixing part (1) is provided with a bearing structure (107); the supporting structure (107) can mechanically support the suspension part (2) under the condition that the intelligent electromagnetic chuck (101) is powered off or fails.
7. The normally conductive attractive magnetic levitation rotation system based on the electromagnetic chuck as claimed in claim 1, wherein: the suspension part (2) is provided with a plurality of blades (204); the paddles (204) are attached to the outside of the support structure (202) and promote air convection under rotating conditions.
8. The normally conductive attractive magnetic levitation rotation system based on the electromagnetic chuck as claimed in claim 1, wherein: the fixing part (1) is also provided with three other groups of intelligent electromagnetic chucks (101), the three groups of intelligent electromagnetic chucks (101) are distributed in an equilateral triangle, and the adsorption surfaces of the electromagnetic chucks (10101) in the three groups of intelligent electromagnetic chucks (101) are positioned on the same horizontal plane and are arranged downwards; the magnetic conductive track (201) is of a flat ring structure, is arranged below the adsorption surface of the electromagnetic chuck (10101), and is positioned at the upper part of the suspension part (2); and the magnetic field acting force between the electromagnetic chuck (10101) and the magnetic conduction track (201) balances the gravity of a part of the suspension part (2).
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| CN201910250299.9A CN110030199B (en) | 2019-03-29 | 2019-03-29 | Normally-conducting attraction type magnetic suspension rotating system based on electromagnetic chuck |
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| CN1599228A (en) * | 2004-09-10 | 2005-03-23 | 宁波天明电子股份有限公司 | Magnetic suspension device of float capable of random two-way automatic rotation and its control system |
| CN103268725A (en) * | 2013-06-06 | 2013-08-28 | 雷建设 | High-voltage control magnetic suspension teaching demonstration instrument |
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| DE4139201A1 (en) * | 1991-11-28 | 1993-06-03 | Frieder Heckmann | Lamp holding system for light bulb or lamp held in suspension by electromagnet - has no mechanical contact between holder and lamp, with lamp held only by magnetic field and power for operating lamp comes from magnetic alternating field |
| GB9613061D0 (en) * | 1995-09-02 | 1996-08-28 | Magnetic Patent Holdings Ltd | Magnetic suspension system |
| CN2618366Y (en) * | 2003-05-14 | 2004-05-26 | 中国科学技术大学 | Multifunctional magnetic suspension devices |
| ITMI20051541A1 (en) * | 2005-08-05 | 2007-02-06 | Antonio Gessa | SYSTEM FOR LEAVING AND MAGNETIC TRANSPORT OF OBJECTS IN SUSPENSION |
| CN106712582B (en) * | 2017-01-09 | 2018-07-17 | 张则羿 | 2 magnetic suspension methods and system |
| CN107191396B (en) * | 2017-06-02 | 2019-02-01 | 东莞市杰伦塑胶灯饰有限公司 | A kind of magnetic suspension scavenger fan |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599228A (en) * | 2004-09-10 | 2005-03-23 | 宁波天明电子股份有限公司 | Magnetic suspension device of float capable of random two-way automatic rotation and its control system |
| CN103268725A (en) * | 2013-06-06 | 2013-08-28 | 雷建设 | High-voltage control magnetic suspension teaching demonstration instrument |
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