CN111856270A - Suspension propulsion integrated rotating platform - Google Patents

Suspension propulsion integrated rotating platform Download PDF

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Publication number
CN111856270A
CN111856270A CN201910332596.8A CN201910332596A CN111856270A CN 111856270 A CN111856270 A CN 111856270A CN 201910332596 A CN201910332596 A CN 201910332596A CN 111856270 A CN111856270 A CN 111856270A
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CN
China
Prior art keywords
stator
rotor
sensor
yoke
base
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
Application number
CN201910332596.8A
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Chinese (zh)
Inventor
张志华
毛凯
张艳清
韩树春
龚珺
翟茂春
杜修方
马逊
余笔超
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Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Original Assignee
Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute filed Critical Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority to CN201910332596.8A priority Critical patent/CN111856270A/en
Publication of CN111856270A publication Critical patent/CN111856270A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34Testing dynamo-electric machines
    • G01R31/346Testing of armature or field windings

Abstract

The invention relates to the technical field of suspension propulsion, and discloses a suspension propulsion integrated rotating platform. This platform includes the platform base, rotor arc PMSM altogether, the suspension tablet, testing arrangement, shaft coupling and accompany the test motor, the motor includes rotor and the first stator of arc and arc second stator in common use, first stator includes first stator base, first stator yoke portion and propulsion coil, the second stator includes the second stator base, second stator yoke portion and propulsion coil, the rotor includes the rotor base, the rotor shaft, rotor yoke and permanent magnet, the propulsion coil of first and second stator provides propulsive force with the permanent magnet interact, both sides all are provided with the suspension tablet about the propulsion coil of first and second stator yoke portion, the suspension tablet produces the suspension force with rotor interaction, detection device detects the relevant motion parameter in the rotor motion process. Therefore, the suspension propulsion coupling capacity can be verified or the suspension system capacity can be independently verified, and the motion parameter can be measured.

Description

Suspension propulsion integrated rotating platform
Technical Field
The invention relates to the technical field of suspension propulsion, in particular to a suspension propulsion integrated rotating platform.
Background
With the continuous progress of science and technology, the traffic mode is increasingly remarkable in the daily life of human beings. Railway trains have certain speed limits due to insufficient wheel-rail friction at high speed, pantograph abrasion and the like. In order to increase the railway carrying speed, the magnetic suspension high-speed train becomes a new research direction. The existing magnetic suspension train is mainly divided into two systems of electromagnetic suspension and electric suspension. The electromagnetic suspension has the characteristic of buoyancy loss at high speed, so that the requirement of the speed of more than 1000km/h is difficult to meet. The electric suspension has the feasibility of high-speed stable suspension due to the characteristics of self-stability and the like. At present, the U.S. air force Holloman test base and the Japanese sorb adopt an electric suspension mode, wherein the Japanese sorb adopts a linear motor for propulsion and an 8-shaped induction coil for achieving the speed of 603 km/h.
One of the key technologies for designing a high-speed maglev train is to analyze the coupling characteristics of a linear motor system and a suspension system when the suspension and propulsion are integrated, but the coupling characteristics are limited by the distance, and the high-speed characteristics of the linear motor are difficult to test and measure. The test line construction verification needs the support of the national government and the local government, the occupied area is large, the cost of the propulsion and suspension characteristics is too large through simple verification, the economy is poor, and meanwhile, once the test line is built, the design parameters are difficult to adjust, and the exploration significance of the motor characteristics and the suspension characteristics is small.
Disclosure of Invention
The invention provides a suspension propulsion integrated rotating platform, which can solve the technical problem that propulsion and suspension coupling characteristics cannot be verified in the prior art.
The invention provides a suspension propulsion integrated rotating platform, which comprises a platform base, a co-rotor arc permanent magnet synchronous motor, a suspension induction plate, a testing device, a shaft coupler and an accompanying motor, wherein the co-rotor arc permanent magnet synchronous motor is arranged on the platform base, the co-rotor arc permanent magnet synchronous motor comprises a common rotor, an arc first stator and an arc second stator, the arc first stator and the arc second stator are symmetrically arranged around the rotor, the first stator comprises a first stator base, a first stator yoke part and a propulsion coil arranged on the inner arc surface of the first stator yoke part at a first preset interval, the second stator comprises a second stator base, a second stator yoke part and a propulsion coil arranged on the inner arc surface of the second stator yoke part at a first preset interval, the first stator is arranged on the platform base through the first stator base, and the second stator is arranged on the platform base through the second stator base, the rotor comprises a rotor base, a rotor shaft, a rotor yoke and a permanent magnet arranged on the rotor yoke, the rotor is arranged on the platform base through the rotor base, one end of the rotor shaft is connected with the rotor base, the center of the rotor yoke extends upwards while one end of the rotor shaft passes through, a propelling coil of a first stator and a propelling coil of a second stator interact with the permanent magnet to provide propelling force, the suspension induction plates are arranged on the upper and lower sides of the propelling coil of the first stator yoke and the propelling coil of the second stator yoke respectively, the suspension induction plates interact with the rotor to generate suspension force, the detection device is used for detecting relevant motion parameters in the motion process of the rotor, the test-accompanying motor is connected with the rotor shaft through the coupler, the rotor shaft is matched with the rotor yoke by adopting a slot wedge structure, and when the test-accompanying motor works, the torque on the rotor shaft is transmitted to the rotor yoke through a slot wedge structure before the generation of the levitation force to rotate the rotor, and the rotor is linearly moved through the slot wedge structure after the generation of the levitation force.
Preferably, a plurality of slots with preset lengths are arranged on the rotor shaft along the circumferential direction, the center of the rotor yoke is provided with a hole with a wedge, when the test motor works, the wedge is wedged in the slot of the rotor shaft before generating the suspension force to transmit the torque on the rotor shaft to the rotor yoke so as to rotate the rotor, and the wedge slides in the slot after generating the suspension force to generate the linear motion along the axial direction so as to make the rotor move linearly.
Preferably, the platform further comprises a heat dissipation device, and the heat dissipation device is arranged on the first stator base, the first stator yoke, the second stator base and the second stator yoke and used for cooling the propulsion coil and the suspension induction plate.
Preferably, the heat dissipation device is a hollow tube, the hollow tube is arranged on the extrados of the first stator yoke and the second stator yoke and on the intrados of the first stator base and the second stator base, or the hollow tube is embedded in the first stator yoke and the second stator yoke and the first stator base and the second stator base, and the propulsion coil and the suspension induction plate are cooled by circulating water introduced into the hollow tube.
Preferably, the detection device includes a sensor guide rail and an S-shaped pull pressure sensor, the sensor guide rail includes an arc slide rail having a support portion and a radial slide rail having a support portion, the S-shaped pull pressure sensor includes a traction sensor, a suspension force sensor and a guiding force sensor, the arc slide rail is disposed below the first stator yoke, the radial slide rail is disposed below the second stator yoke, the traction sensor is disposed on end faces of left and right sides of the first stator yoke, the suspension force sensor is disposed on the support portion of the arc slide rail and the support portion of the radial slide rail, and the guiding force sensor is disposed on an extrados surface of the second stator yoke at a second predetermined interval.
Preferably, the detecting means includes a triaxial force sensor and a sensor mount, the sensor mount being disposed below the first and second stator yokes, the triaxial force sensor being disposed on each of the first stator yoke upper side surface, the second stator yoke upper side surface, and the sensor mount, for detecting the traction force, the levitation force, and the guide force at the same time.
Preferably, the detection device further comprises a voltage sensor and a current sensor for respectively detecting the three-phase voltage and the three-phase current of the propulsion coil, and the voltage sensor and the current sensor are respectively a hall voltage sensor and a hall current sensor.
Preferably, the detection device further comprises a speed sensor arranged between the propulsion coils and used for detecting the rotating speed of the rotor, and the speed sensor is a latch-type digital hall sensor.
Preferably, the detection device further comprises an ultrasonic distance measuring sensor disposed on the platform base at a space between the first stator and the second stator for detecting a levitation height of the rotor during operation.
Preferably, the rotor base includes a rotor base body, a flat bearing provided on the rotor base body, and a radial bearing provided on the flat bearing. .
Through the technical scheme, can set up rotor-sharing arc PMSM on the platform base, suspension tablet and testing arrangement, motor rotor can pass through stator coil electromagnetic propulsion and rotate, rotor-sharing arc PMSM is with the mode of replacing straight with the bent, the restriction problem of linear electric motor on the working distance has been solved, install suspension tablet and rotor interact simultaneously and realize the suspension, verify suspension propulsion coupling ability, utilize testing arrangement can accurately explore linear electric motor and suspension system at the relevant motion parameter variation condition of whole in-process, provide the effective way for exploring and analyzing the characteristic of electromagnetic propulsion magnetic suspension system. And, through setting up the motor of accompanying the examination, can verify suspension system ability alone through the rotation of motor of accompanying the examination.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram illustrating an overall configuration of a levitation propulsion integrated rotary platform according to an embodiment of the present invention;
FIGS. 2A-2C illustrate a schematic view of a test-assist motor and rotor installation in accordance with an embodiment of the present invention;
3A-3B illustrate schematic views of a motor stator sensor mounting location in accordance with an embodiment of the present invention;
FIG. 4 illustrates a schematic diagram of a three-axis force sensor mounting location according to an embodiment of the present invention;
fig. 5 is a schematic diagram showing the pulse waveform output per unit time of the hall sensor according to the embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 shows a general structural diagram of a suspension-propulsion integrated rotating platform according to an embodiment of the invention.
Fig. 2A-2C show schematic views of a test-accompanying motor and rotor installation according to an embodiment of the invention.
Wherein, fig. 2A is an overall schematic view of the installation of the test-accompanying motor and the rotor; FIG. 2B is a schematic view of a rotor shaft; fig. 2C is a schematic view of the rotor yoke.
As shown in fig. 1-2, an embodiment of the present invention provides a suspension propulsion integrated rotating platform, wherein the platform comprises a platform base 1, a co-rotor arc-shaped permanent magnet synchronous motor (e.g., an ironless permanent magnet synchronous motor, serving as an electromagnetic propulsion system) arranged on the platform base 1, a suspension induction plate 2, a testing device, a coupler 12 and a test motor 13, the co-rotor arc-shaped permanent magnet synchronous motor comprises a common rotor 3, and arc-shaped first stators 4 and arc-shaped second stators 5 symmetrically arranged around the common rotor 3, the first stators 4 comprise first stator bases 40, first stator yoke portions 41 and propulsion coils 42 (stator coils) arranged at the inner arc surfaces of the first stator yoke portions 41 at first predetermined intervals, the second stators 5 comprise second stator bases 50, second stator yoke portions 51 and propulsion coils 42 arranged at the inner arc surfaces of the second stator yoke portions 51 at first predetermined intervals, the first stator 4 is disposed on the platform base 1 through the first stator base 40, the second stator 5 is disposed on the platform base 1 through the second stator base 50, the shared rotor 3 includes a rotor base 30, a rotor shaft 31, a rotor yoke 32, and a permanent magnet 33 disposed on the rotor yoke 32, the shared rotor 3 is disposed on the platform base 1 through the rotor base 30, one end of the rotor shaft 31 is connected to the rotor base 30, and the other end extends upward through the center of the rotor yoke 32, a propulsion coil of the first stator 4 and a propulsion coil of the second stator 5 interact with the permanent magnet 33 to provide a propulsion force, the suspension induction plates 2 are disposed on the upper and lower sides of the propulsion coil of the first stator yoke 41 and the second stator yoke 42 (that is, the suspension induction plates 2 are disposed on the upper and lower sides of the propulsion coil of the first stator yoke 41, both sides all set up about second stator yoke portion 42's propulsion coil suspension tablet 2, promptly, go up suspension tablet and lower suspension tablet), suspension tablet 2 with 3 interact of sharing rotor produce the suspension force, detection device is used for detecting the relevant motion parameter of 3 motion processes of sharing rotor, accompany test motor 13 to pass through shaft coupling 12 with rotor shaft 31 is connected, rotor shaft 31 with rotor yoke 32 adopts the slot to carve the structure cooperation accompany test motor 13 during operation, it will to carve the structure through the slot before producing the suspension force torque on the rotor shaft 31 is transmitted extremely rotor yoke 32 is so that rotor 3 is rotatory to make through the slot after producing the suspension force 3 rectilinear movement of rotor.
The relevant motion parameters may include, among others, the force, voltage, current, speed and flying height generated during the movement of the common rotor 3.
For example, the rotor shaft 31 may be a rotor limit shaft, and the propulsion coil may be in a concentrated winding form; the stator yoke is used for mounting and fixing stator coil parts, and the selected yoke material can be non-magnetic and non-conductive material. Rotor yoke 32 may be a non-magnetic rotor yoke. And, the adjacent both ends of first stator 4 and second stator 5 are at a certain interval, do not contact each other.
Furthermore, the radial clearance between the stator and the rotor is adjustable.
According to one embodiment of the invention, the permanent magnets 33 may be evenly distributed along the circumference of the rotor in N-S-N-S.
For example, the suspension induction plate 2 may be made of a material with high electrical conductivity, such as copper, aluminum, etc. And the distance between the suspension induction plate 2 and the rotor along the radial direction is adjustable. When the rotor rotates fast, eddy current can be induced on the induction plate, and the magnetic field and the eddy current interact to generate suspension force, so that system suspension is realized, namely, the suspension induction plate 2 and the common rotor 3 are jointly used as an electric suspension system.
Through the technical scheme, can set up rotor-sharing arc PMSM on the platform base, suspension tablet and testing arrangement, motor rotor can pass through stator coil electromagnetic propulsion and rotate, rotor-sharing arc PMSM is with the mode of replacing straight with the bent, the restriction problem of linear electric motor on the working distance has been solved, install suspension tablet and rotor interact simultaneously and realize the suspension, verify suspension propulsion coupling ability, utilize testing arrangement can accurately explore linear electric motor and suspension system at the relevant motion parameter variation condition of whole in-process, provide the effective way for exploring and analyzing the characteristic of electromagnetic propulsion magnetic suspension system. And, through setting up the motor of accompanying the examination, can verify suspension system ability alone through the rotation of motor of accompanying the examination.
According to an embodiment of the present invention, a plurality of slots 310 with a predetermined length are formed in the circumferential direction of the rotor shaft 31, the center of the rotor yoke is a hole with a wedge 311, when the test motor 13 is in operation, the wedge 311 transmits the torque on the rotor shaft to the rotor yoke 32 in the slot 310 of the rotor shaft 31 before generating the levitation force to rotate the rotor 3, and the wedge 311 slides in the slot 310 after generating the levitation force to generate the linear motion in the axial direction to linearly move the rotor 3.
That is, under the condition of the work of the accompanying test motor, before the suspension force is generated, the wedge is clamped in the groove of the rotor shaft, the torque on the shaft is transmitted to the rotor body, and the rotation of the rotor is ensured; after the suspension force is generated, the wedge can slide in the groove of the rotor shaft to generate linear motion along the axial direction, and the linear motion of the rotor pushed by the suspension force is completed. Thus, the suspension system capability can be verified separately by accompanying the motor rotation.
The length and number of the grooves can be set according to actual conditions, and the invention does not limit the length and number of the grooves.
According to an embodiment of the present invention, the platform further comprises a heat sink 6, wherein the heat sink 6 is disposed on the first stator base 40, the first stator yoke 41, the second stator base 50 and the second stator yoke 51 for cooling the propulsion coil and the levitation induction plate 2.
Therefore, the heat dissipation and cooling of the propulsion coil and the suspension induction plate can be realized.
According to an embodiment of the present invention, the heat dissipation device 6 is a hollow pipe, the hollow pipe is disposed on the outer arc surface of the first stator yoke 41 and the second stator yoke 51 and on the inner arc surface of the first stator base 40 and the second stator base 50, or the hollow pipe is embedded in the first stator yoke 41 and the second stator yoke 51 and the first stator base 40 and the second stator base 50, and the temperature of the propulsion coil and the levitation induction plate is reduced by circulating water in the hollow pipe.
That is, can carry out the heat dissipation cooling to propulsion coil and suspension induction plate through the water-cooling mode to keep the temperature of motor stator constant.
For example, the hollow pipe can be a square hollow copper pipe, and the cooling circulating water enters from the inlet and exits from the outlet of the hollow pipe to form water cooling circulation to realize the cooling process.
It will be appreciated by those skilled in the art that the above description of the hollow tube is merely exemplary and not intended to limit the present invention, and that other shapes and materials may be used for the hollow tube of the present invention.
Furthermore, the hollow pipes may be arranged on the surface, may be arranged in an embedded manner, or may be arranged in a manner of mixing the surface arrangement and the embedded arrangement (for example, the stator yoke outer arc surface is arranged to be embedded in the stator base, the stator base inner arc surface is arranged to be embedded in the stator yoke, the first stator yoke outer arc surface and the first stator base inner arc surface are arranged to be embedded in the second stator yoke and the second stator base, and the like, which is not exhaustive in the present invention), and the specific arrangement manner may be set according to the actual situation, and is not set by the present invention. The depth of embedding may be set as needed, and the present invention does not set this.
Fig. 3A-3B are schematic diagrams illustrating a stator sensor mounting location of an electric machine according to an embodiment of the present invention.
Fig. 3A is a schematic view of a sensor mounting position for a first stator, and fig. 3B is a schematic view of a sensor mounting position for a second stator.
According to one embodiment of the present invention, as shown in fig. 3A-3B, the sensing device includes a sensor rail 7 and an S-shaped pull and pressure sensor, the sensor rail 7 comprises an arc-shaped slide rail 70 with a support and a radial slide rail 71 with a support, the S-shaped pull pressure sensor includes a traction sensor 72, a levitation force sensor 73 and a guiding force sensor 74, the arcuate slide rails 70 are disposed below the first stator yoke 41, the radial slide rails 71 are disposed below the second stator yoke 51, the traction force sensors 72 are provided on both left and right side end surfaces of the first stator yoke portion 41, the levitation force sensor 73 is disposed on the support portion of the arc-shaped slide rail 70 and the support portion of the radial slide rail 71, the guide force sensors 74 are disposed on the outer arc surface of the second stator yoke 51 at second predetermined intervals.
This enables measurement of forces in three directions, i.e., levitation force, traction force, and guide force (three-dimensional forces).
Further, by providing the sensor rail 7 described above, the tension/compression sensors can be prevented from interfering with each other in the orthogonal direction. More specifically, the arc-shaped slide rail is adopted for the first stator, the sensitivity direction of the first stator is consistent with that of the traction force sensor, and the first stator can be used for eliminating the influence of tiny mechanical deformation in the traction force direction on the suspension force sensor; the second stator adopts a radial slide rail, the sensitivity direction of the second stator is consistent with that of the guide force sensor, and the second stator can be used for eliminating the influence of micro mechanical deformation in the direction of the guide force on the suspension force sensor.
Fig. 4 is a schematic diagram illustrating a mounting position of a triaxial force sensor according to an embodiment of the present invention.
Fig. 4 illustrates an example of any of the stator yokes. The other stator yoke is similar and will not be described again.
According to an embodiment of the present invention, as shown in fig. 4, alternatively, the detecting means may include a three-axis force sensor 9 and a sensor mount 10, the sensor mount 10 being disposed below the first stator yoke 41 and the second stator yoke 42, the three-axis force sensor 9 being disposed on each of an upper side surface of the first stator yoke 41, an upper side surface of the second stator yoke 42, and the sensor mount 10 for detecting the traction force, the levitation force, and the guide force at the same time.
That is, in addition to the manner of measuring the three-dimensional force by using the sensor guide rail 7 and the S-shaped pull pressure sensor described in the above embodiments, the traction force, the levitation force, and the guiding force may be measured simultaneously by directly using the three-axis force sensor and the sensor mount.
The triaxial force sensor can measure the forces in three directions simultaneously, and has the advantages of stable structure, high precision and low triaxial mutual interference.
According to an embodiment of the present invention, the detection device may further include a voltage sensor and a current sensor for respectively detecting three-phase voltages and currents of the propulsion coil.
According to one embodiment of the invention, the voltage sensor and the current sensor are a hall voltage sensor and a hall current sensor, respectively.
According to an embodiment of the present invention, the detecting device may further include a speed sensor 8 disposed between the propulsion coils (as shown in fig. 3A and 4) for detecting the rotation speed of the rotor, and the speed sensor 8 may be, for example, a latch-type digital hall sensor.
And (3) carrying out the rotation speed of the rotor by adopting a Hall element speed measurement method. The basic principle of the Hall element velocity measurement method is as follows: the Hall switch element is internally provided with a voltage stabilizing circuit, a Hall potential generator, an amplifier, a Schmitt trigger and an output circuit. The output level is compatible with the TTL level, a disc is arranged on a motor rotating shaft, a plurality of pairs of small magnetic steels are arranged on the disc, the more the small magnetic steels are, the higher the resolution ratio is, the Hall switch is fixed near the small magnetic steels, when the motor rotates, when one small magnetic steel rotates to pass through the Hall switch, the Hall switch outputs a pulse, the pulse number in unit time is calculated, and the rotating speed of the rotating body can be determined.
The bipolar latching Hall effect switch is opened when being placed at an n pole (or an s pole), and is kept opened after the magnetic field is removed; and is turned off only when placed in the s-pole (or n-pole), and continues to remain in its on or off state after the magnetic field is removed until the next magnetic field change. This characteristic of maintaining the last state is the latch characteristic.
For example, one embodiment of the present invention may use a high sensitivity latched digital Hall sensor VF460S that goes to an on (NO) state in the south (S) field and outputs a low level.
Fig. 5 is a schematic diagram showing the pulse waveform output per unit time of the hall sensor according to the embodiment of the present invention.
Taking the number of the rotor permanent magnets as an example and arranging in the form of N-S-N-S, the waveform output by the latch type digital hall sensor is shown in fig. 5.
According to an embodiment of the present invention, the detecting device further includes an ultrasonic distance measuring sensor 11 disposed on the platform base 1 at a space between the first stator 4 and the second stator 5, for detecting a levitation height of the rotor 3 during operation.
The invention adopts non-contact height measurement, and the ultrasonic distance measuring sensor measures the suspension height of the rotor during operation by measuring the distance between the ultrasonic distance measuring sensor and the outer edge of the rotor.
According to an embodiment of the present invention, the rotor base 30 may include a rotor base body, a flat bearing provided on the rotor base body, and a radial bearing provided on the flat bearing.
For example, the radial bearing may be a graphite bearing, which not only ensures the rotation and suspension of the rotor, but also avoids the increase of the suspension weight caused by the bearing. When the rotor is in a stage from static to suspension, the plane bearing supports the roller rotor and ensures that the rotor does rotary motion along the axial direction; the flat bearing provides support for the roller rotor and prevents severe rubbing against the rotor base before the rotor stalls until the fall back stage.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A suspension and propulsion integrated rotating platform is characterized by comprising a platform base, a co-rotor arc permanent magnet synchronous motor, a suspension induction plate, a testing device, a shaft coupler and an accompanying motor, wherein the co-rotor arc permanent magnet synchronous motor is arranged on the platform base and comprises a co-rotor, an arc first stator and an arc second stator, the arc first stator and the arc second stator are symmetrically arranged around the rotor, the first stator comprises a first stator base, a first stator yoke part and a propulsion coil arranged on the inner arc surface of the first stator yoke part at a first preset interval, the second stator comprises a second stator base, a second stator yoke part and a propulsion coil arranged on the inner arc surface of the second stator yoke part at a first preset interval, the first stator is arranged on the platform base through the first stator base, and the second stator is arranged on the platform base through the second stator base, the rotor comprises a rotor base, a rotor shaft, a rotor yoke and a permanent magnet arranged on the rotor yoke, the rotor is arranged on the platform base through the rotor base, one end of the rotor shaft is connected with the rotor base, the center of the rotor yoke extends upwards while one end of the rotor shaft passes through, a propelling coil of a first stator and a propelling coil of a second stator interact with the permanent magnet to provide propelling force, the suspension induction plates are arranged on the upper and lower sides of the propelling coil of the first stator yoke and the propelling coil of the second stator yoke respectively, the suspension induction plates interact with the rotor to generate suspension force, the detection device is used for detecting relevant motion parameters in the motion process of the rotor, the test-accompanying motor is connected with the rotor shaft through the coupler, the rotor shaft is matched with the rotor yoke by adopting a slot wedge structure, and when the test-accompanying motor works, the torque on the rotor shaft is transmitted to the rotor yoke through a slot wedge structure before the generation of the levitation force to rotate the rotor, and the rotor is linearly moved through the slot wedge structure after the generation of the levitation force.
2. The platform of claim 1, wherein a plurality of slots with predetermined lengths are formed in the rotor shaft in the circumferential direction, a hole with a wedge is formed in the center of the rotor yoke, the slot is wedged in the slot of the rotor shaft before generating the levitation force to transmit the torque on the rotor shaft to the rotor yoke so as to rotate the rotor when the test motor works, and the slot slides in the slot after generating the levitation force to generate the linear motion in the axial direction so as to linearly move the rotor.
3. The platform of claim 1, further comprising heat sinks disposed on the first stator base, the first stator yoke, the second stator base, and the second stator yoke for cooling the propulsion coils and the levitation induction plates.
4. The platform of claim 3, wherein the heat dissipation device is a hollow tube disposed on the extrados of the first and second stator yokes and the intrados of the first and second stator bases, or the hollow tube is embedded in the first and second stator yokes and the first and second stator bases, and the propulsion coils and the levitation induction plates are cooled by circulating water through the hollow tube.
5. The platform of claim 1, wherein the detection device comprises a sensor rail and an S-shaped pull and pressure sensor, the sensor rail comprises an arc-shaped slide rail having a support portion and a radial slide rail having a support portion, the S-shaped pull and pressure sensor comprises a traction sensor, a levitation sensor and a guiding force sensor, the arc-shaped slide rail is disposed below the first stator yoke, the radial slide rail is disposed below the second stator yoke, the traction sensor is disposed on the left and right end faces of the first stator yoke, the levitation sensor is disposed on the support portion of the arc-shaped slide rail and the support portion of the radial slide rail, and the guiding force sensor is disposed on the outer arc face of the second stator yoke at a second predetermined interval.
6. The platform of claim 1, wherein the detection device comprises a three-axis force sensor and a sensor mount disposed below the first and second stator yokes, the three-axis force sensor being disposed on each of the first stator yoke upper side surface, the second stator yoke upper side surface, and the sensor mount for simultaneously detecting a traction force, a levitation force, and a guide force.
7. The platform of claim 5 or 6, wherein the detection device further comprises a voltage sensor and a current sensor for detecting three-phase voltage and current of the propulsion coil, respectively, the voltage sensor and the current sensor being a Hall voltage sensor and a Hall current sensor, respectively.
8. The platform of claim 7, wherein the detection device further comprises a speed sensor disposed between the propulsion coils for detecting a rotational speed of the rotor, the speed sensor being a latched digital hall sensor.
9. The platform of claim 7, wherein the detection device further comprises an ultrasonic ranging sensor disposed on the platform base at a spacing between the first stator and the second stator for detecting a levitation height of the rotor when in operation.
10. The platform of claim 1, wherein the rotor base includes a rotor base body, a planar bearing disposed on the rotor base body, and a radial bearing disposed on the planar bearing.
CN201910332596.8A 2019-04-24 2019-04-24 Suspension propulsion integrated rotating platform Pending CN111856270A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543688A1 (en) * 1975-09-30 1977-03-31 Siemens Ag Mounting for linear propulsion motor - is slung from vehicle between fore and aft bogeys with lateral adjustment curves
CN105775169A (en) * 2016-03-21 2016-07-20 中国空间技术研究院 Magnetization suspension induction drive type counteractive momentum ball
CN108482183A (en) * 2018-05-22 2018-09-04 北京九州动脉隧道技术有限公司 A kind of magnetic suspension pipeline
CN109672299A (en) * 2019-01-19 2019-04-23 曲阜师范大学 Wind-force magnetically levitated flywheel auxiliary generating system
CN210572625U (en) * 2019-04-24 2020-05-19 中国航天科工飞航技术研究院(中国航天海鹰机电技术研究院) Suspension propulsion integrated rotating platform

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543688A1 (en) * 1975-09-30 1977-03-31 Siemens Ag Mounting for linear propulsion motor - is slung from vehicle between fore and aft bogeys with lateral adjustment curves
CN105775169A (en) * 2016-03-21 2016-07-20 中国空间技术研究院 Magnetization suspension induction drive type counteractive momentum ball
CN108482183A (en) * 2018-05-22 2018-09-04 北京九州动脉隧道技术有限公司 A kind of magnetic suspension pipeline
CN109672299A (en) * 2019-01-19 2019-04-23 曲阜师范大学 Wind-force magnetically levitated flywheel auxiliary generating system
CN210572625U (en) * 2019-04-24 2020-05-19 中国航天科工飞航技术研究院(中国航天海鹰机电技术研究院) Suspension propulsion integrated rotating platform

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