Patent Publication Number: US-2023160782-A1

Title: Equipment for simulating high-speed magnetic levitation operation

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of priority from Chinese Patent Application No. 202010729093.7, filed on Jul. 27, 2020. The content of the aforementioned application, including any intervening amendments thereto, is incorporated herein by reference in its entirety. 
     TECHNICAL FIELD 
     This application relates to magnetic levitation (maglev) technology, and more specifically to an equipment for simulating high-speed maglev operation. 
     BACKGROUND 
     The current researches on levitation force, guidance force and dynamic behavior of a magnetic levitation system are mainly carried out on static or quasi-static test equipment. Although some apparatuses can support dynamic operation research for maglev, the operating speed is not high. And they can only support the experimental research of a single-mode magnetic levitation. At present, the development of ultra-high-speed magnetic levitation trains is mainly limited by some problems, such as the selection of levitation mode, the lack of simulation experimental data under ultra-high-speed operation, etc. 
     SUMMARY 
     An object of the present disclosure is to provide equipment for simulating high-speed magnetic levitation (maglev) operation to help solve the problems in the prior art. 
     The technical solutions of the present disclosure are described as follows. 
     Provided herein is an equipment for simulating high-speed maglev operation, comprising: 
     a wheel; 
     a driving mechanism; 
     a first test guideway; a second test guideway; 
     a first test object; and 
     a second test object; 
     wherein the wheel comprises a rim and a hub; the hub is arranged at a middle of the rim; the driving mechanism is configured to drive the wheel to rotate vertically; the first test guideway and the second test guideway are arranged on an inner wall of the rim; the first test guideway is arranged on one side of the hub, and the second test guideway is arranged on the other side of the hub; the first test object is arranged in the first test guideway; and the second test object is arranged in the second test guideway. 
     In an embodiment, the equipment further comprises a first position control device and a second position control device; the first position control device is configured to control a reciprocating movement of the first test object along a radial direction of the first test guideway; and the second position control device is configured to control a reciprocating movement of the second test object along a radial direction of the second test guideway. 
     In an embodiment, the first position control device comprises a first bottom plate, a first sliding plate and a first motor; two first linear sliding tables parallel to each other are arranged on the first bottom plate; a first screw rod is arranged between the two first linear sliding tables; the first screw rod is connected to an output end of the first motor; a top of each of the two first linear sliding tables is provided with a first linear chute; a bottom of the first sliding plate is provided with two first sliding blocks respectively matched with two first linear chutes; the bottom of the first sliding plate between the two first sliding blocks is provided with a first thread insert; the first thread insert is threadedly connected with the first screw rod; a top of the first sliding plate is provided with a first clamping arm; the first test object is arranged on the first clamping arm; and an extension line of an orthographic projection of the first screw rod on the hub passes through a center of the hub; and 
     the second position control device comprises a third bottom plate, a third sliding plate and a third motor; two third linear sliding tables parallel to each other are arranged on the third bottom plate; a third screw rod is arranged between the two third linear sliding tables; the third screw rod is connected to an output end of the third motor; a top of each of the two third linear sliding tables is provided with a third linear chute; a bottom of the third sliding plate is provided with two third sliding blocks respectively matched with two third linear chutes; the bottom of the third sliding plate between the two third sliding blocks is provided with a third thread insert; the third thread insert is threadedly connected with the third screw rod; a top of the third sliding plate is provided with a second clamping arm; the second test object is arranged on the second clamping arm; and an extension line of an orthographic projection of the third screw rod on the hub passes through a center of the hub. 
     In an embodiment, the equipment further comprises a first position control device and a second position control device; the first position control device is configured to control a reciprocating movement of the first test object along an axial direction of the first test guideway; and the second position control device is configured to control a reciprocating movement of the second test object along an axial direction of the second test guideway. 
     In an embodiment, the first position control device comprises a second bottom plate, a second sliding plate and a second motor; two second linear sliding tables parallel to each other are arranged on the second bottom plate; a second screw rod is arranged between the two second linear sliding tables; the second screw rod is connected to an output end of the second motor; a top of each of the two second linear sliding tables is provided with a second linear chute; a bottom of the second sliding plate is provided with two second sliding blocks respectively matched with two second linear chutes; the bottom of the second sliding plate between the two second sliding blocks is provided with a second thread insert; the second thread insert is threadedly connected with the second screw rod; a top of the second sliding plate is provided with a first clamping arm; the first test object is arranged on the first clamping arm; and the second screw rod and a central axis of the hub are parallel to each other; and 
     the second position control device comprises a fourth bottom plate, a fourth sliding plate and a fourth motor; two fourth linear sliding tables parallel to each other are arranged on the fourth bottom plate; a fourth screw rod is arranged between the two fourth linear sliding tables; the fourth screw rod is connected to an output end of the fourth motor; a top of each of the two fourth linear sliding tables is provided with a fourth linear chute; a bottom of the fourth sliding plate is provided with two fourth sliding blocks respectively matched with the two fourth linear chutes; the bottom of the fourth sliding plate between the two fourth sliding blocks is provided with a fourth thread insert; the fourth thread insert is threadedly connected with the fourth screw rod; a top of the fourth sliding plate is provided with a second clamping arm; the second test object is arranged on the second clamping arm; and the fourth screw rod and the central axis of the hub are parallel to each other. 
     In an embodiment, the equipment further comprises an eddy-current brake device; the eddy-current brake device comprises an eddy-current brake sliding table and an eddy-current brake displacement control mechanism; an end of the eddy-current brake sliding table is provided with an eddy-current brake magnet; the eddy-current brake displacement control mechanism is configured to drive the eddy-current brake sliding table to reciprocate; and the hub is arranged on a movement path of the eddy-current brake sliding table. 
     The eddy-current brake displacement control mechanism comprises a fifth bottom plate, a fifth sliding plate and a fifth motor; two fifth linear sliding tables parallel to each other are arranged on the fifth bottom plate; a fifth screw rod is arranged between the two fifth linear sliding tables; the fifth screw rod is connected to an output end of the fifth motor; a top of each of the two fifth linear sliding tables is provided with a fifth linear chute; a bottom of the fifth sliding plate is provided with two fifth sliding blocks respectively matched with two fifth linear chutes; the bottom of the fifth sliding plate between the two fifth sliding blocks is provided with a fifth thread insert; the fifth thread insert is threadedly connected with the fifth screw rod; a top of the fifth sliding plate is provided with the eddy-current brake sliding table. 
     In an embodiment, the driving mechanism comprises a variable frequency alternating-current (AC) motor; an emergency brake is arranged between the variable frequency AC motor and the wheel; the emergency brake comprises a brake disc; an output shaft of the variable frequency AC motor is connected to an input end of a rotating shaft of the brake disc through a first coupling; an output end of the rotating shaft of the brake disc is connected to a main shaft of the wheel through a second coupling; the input end of the rotating shaft of the brake disc is rotatably arranged on a base through a first bearing seat; and the main shaft of the wheel is rotatably arranged on a frame through a second bearing seat. 
     In an embodiment, a protective cover is arranged above the wheel; and a bottom of the protective cover is fixedly arranged on a frame. 
     In an embodiment, a vibration exciter is arranged above the first test object; a first six-axis force sensor is arranged between the vibration exciter and the first test object; the second test object is fixedly arranged on a clamping arm; and a second six-axis force sensor is arranged between the second test object and the clamping arm. 
     In an embodiment, the first test guideway is a circular Halbach permanent magnet guideway; the second test guideway is a circular metal guideway; the first test object is a high-temperature superconducting magnetic levitation test object; and the second test object is an electrodynamic levitation permanent magnet test object. 
     Compared to the prior art, the present disclosure has the following beneficial effects. 
     In the present disclosure, the wheel is configured to vertically rotate, and by virtue of a structure of the hub and rim, the test can be performed on an inner side of the wheel, such that the rotation speed of the guideway can be increased, and the linear speed of the guideway can reach 600 km/h or more. With the help of the first test guideway and the second test guideway, the first test object and the second test object can be tested simultaneously, allowing for an improved test efficiency. Moreover, the first test guideway, the first test object, the second test guideway and the second test object can be designed flexibly to carry out various maglev dynamic operation experiments. 
     Other features and advantages of the present disclosure will be described below, and part of them will become obvious from the description, or understood by implementing the embodiments of the present disclosure. The object and other advantages of the present disclosure can be realized and obtained by the description, claims, and the structures specifically pointed out in the drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the drawings needed to be used in the embodiments will be briefly described below. It should be understood that presented in the drawings are only some embodiments of the present disclosure, which are not intend to limit the scope of the disclosure. It should be noted that other related drawings can be obtained by those of ordinary skill in the art from these drawings without paying creative effort. 
         FIG.  1    is a schematic diagram of a structure of an equipment for simulating high-speed magnetic levitation operation according to an embodiment of the present disclosure; 
         FIG.  2    is a cross-sectional view of the equipment according to an embodiment of the present disclosure; 
         FIG.  3    is a schematic diagram of a structure of a first position control device according to an embodiment of the present disclosure; 
         FIG.  4    is a schematic diagram of a structure of a second position control device according to an embodiment of the present disclosure; 
         FIG.  5    is a schematic diagram of a structure of an eddy-current brake device according to an embodiment of the present disclosure. 
     
    
    
     In the drawings:  1 , variable frequency AC motor;  2 , first coupling;  3 , first bearing seat;  4 , emergency brake;  41 , brake disc;  5 , second coupling;  6 , second bearing seat;  7 , main shaft;  8 , second test guideway;  9 , wheel;  91 , rim;  92 , hub;  10 , first test guideway;  11 , protective cover;  12 , eddy-current brake device;  121 , eddy-current brake magnet;  122 , eddy-current brake sliding table;  123 , eddy-current brake displacement control mechanism;  1231 , fifth motor;  1232 , fifth linear sliding table;  1233 , fifth screw rod;  1234 , fifth sliding plate;  1235 , fifth linear chute;  1236 , fifth sliding block;  1237 , fifth bottom plate;  13 , first position control device;  131 , first longitudinal displacement driving mechanism;  1311 , first motor;  1312 , first linear sliding table;  1313 , first screw rod;  1314 , first sliding plate;  1315 , first linear chute;  1316 , first sliding block;  1317 , first bottom plate;  132 , first clamping arm;  133 , first lateral displacement driving mechanism;  1331 , second motor;  1332 , second linear sliding table;  1333 , second screw rod;  1334 , second sliding plate;  1335 , second linear chute;  1336 , second sliding block;  1337 , second bottom plate;  14 , position control device base;  15 , vibration exciter;  16 , first test object;  17 , second test object;  18 , second position control device;  181 , second longitudinal displacement driving mechanism;  1811 , third motor;  1812 , third linear sliding table;  1813 , third screw rod;  1814 , third sliding plate;  1815 , third linear chute;  1816 , third sliding block;  1817 , third bottom plate;  182 , second clamping arm;  183 , second lateral displacement driving mechanism;  1831 , fourth motor;  1832 , fourth linear sliding table;  1833 , fourth screw rod;  1834 , fourth sliding plate;  1835 , fourth linear chute;  1836 , fourth sliding block;  1837 , fourth bottom plate;  19 , frame;  20 , base;  21 , first six-axis force sensor;  22 , second six-axis force sensor. 
     DETAILED DESCRIPTION OF EMBODIMENTS 
     The disclosure will be described completely and clearly below with reference to the accompanying drawings and embodiments to make the object, technical solutions, and beneficial effects of the present disclosure clearer. Obviously, provided below are merely some embodiments of the disclosure. The components illustrated in the drawings herein can be arranged and designed in various configurations. Therefore, the embodiments provided in the accompanying drawings are merely illustrative, and are not intended to limit the scope of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without paying any creative effort shall fall within the scope of the present disclosure. 
     It should be noted that similar reference numerals or letters indicate similar elements in the following drawings. Therefore, once a certain element has been defined in a figure, it does not need to be further defined and explained in subsequent figures. At the same time, as used herein, the terms “first”, “second”, etc. are only used to distinguish the elements referred to, and should not be understood as indicating or implying relative importance. 
     Embodiment 1 
     As shown in  FIGS.  1 - 5   , provided herein is an equipment for simulating high-speed magnetic levitation (maglev) operation, which includes a wheel  9 , a driving mechanism, a first test guideway  10 , a second test guideway  8 , a first test object  16  and a second test object  17 . The wheel  9  includes a rim  91  and a hub  92 . The hub  92  is arranged at a middle of the rim  91 . The driving mechanism is configured to drive the wheel  9  to rotate. The first test guideway  10  and the second test guideway  8  are arranged on an inner wall of the rim  91 ; the first test guideway  10  is arranged on one side of the hub  92 , and the second test guideway  8  is arranged on the other side of the hub  92 . The first test object  16  is arranged in the first test guideway  10 ; and the second test object  17  is arranged in the second test guideway  8 . 
     In an embodiment, the equipment further includes a first position control device  13  and a second position control device  18 . The first position control device  13  is configured to control a reciprocating movement of the first test object  16  along a radial direction of the first test guideway  10 ; and the second position control device  18  is configured to control a reciprocating movement of the second test object  17  along a radial direction of the second test guideway  8 . 
     In an embodiment, the first position control device  13  includes a first bottom plate  1317 , a first sliding plate  1314  and a first motor  1311 . Two first linear sliding tables  1312  parallel to each other are arranged on the first bottom plate  1317 . A first screw rod  1313  is arranged between the two first linear sliding tables  1312 ; the first screw rod  1313  is connected to an output end of the first motor  1311 . A top of each of the two first linear sliding tables  1312  is provided with a first linear chute  1315 . A bottom of the first sliding plate  1314  is provided with two first sliding blocks  1316  respectively matched with two first linear chutes  1315 . The bottom of the first sliding plate  1314  between the two first sliding blocks  1316  is provided with a first thread insert. The first thread insert is threadedly connected with the first screw rod  1313 . A top of the first sliding plate  1314  is provided with a first clamping arm  132 . The first test object  16  is arranged on the first clamping arm  132 . An extension line of an orthographic projection of the first screw rod  1313  on the hub  92  passes through a center of the hub  92 . 
     The second position control device  18  includes a third bottom plate  1817 , a third sliding plate  1814  and a third motor  1811 . Two third linear sliding tables  1812  parallel to each other are arranged on the third bottom plate  1817 . A third screw rod  1813  is arranged between the two third linear sliding tables  1812 . The third screw rod  1813  is connected to an output end of the third motor  1811 . A top of each of the two third linear sliding tables  1812  is provided with a third linear chute  1815 . A bottom of the third sliding plate  1814  is provided with two third sliding blocks  1816  respectively matched with two third linear chutes  1815 . The bottom of the third sliding plate  1814  between the two third sliding blocks  1816  is provided with a third thread insert. The third thread insert is threadedly connected with the third screw rod  1813 . A top of the third sliding plate  1814  is provided with a second clamping arm  182 . The second test object  17  is arranged on the second clamping arm  182 . An extension line of an orthographic projection of the third screw rod  1813  on the hub  92  passes through a center of the hub  92 . 
     In an embodiment, the equipment further includes an eddy-current brake device  12 . The eddy-current brake device  12  includes an eddy-current brake sliding table  122  and an eddy-current brake displacement control mechanism  123 . An end of the eddy-current brake sliding table  122  is provided with an eddy-current brake magnet  121 . The eddy-current brake displacement control mechanism  123  is configured to drive the eddy-current brake sliding table  122  to reciprocate. The hub  92  is arranged on a movement path of the eddy-current brake sliding table  122 . 
     The eddy-current brake displacement control mechanism  123  includes a fifth bottom plate  1237 , a fifth sliding plate  1234  and a fifth motor  1231 . Two fifth linear sliding tables  1232  parallel to each other are arranged on the fifth bottom plate  1237 . A fifth screw rod  1233  is arranged between the two fifth linear sliding tables  1232 , and the fifth screw rod  1233  is connected to an output end of the fifth motor  1231 . A Top of each of the two fifth linear sliding tables  1232  is provided with a fifth linear chute  1235 . A bottom of the fifth sliding plate  1234  is provided with two fifth sliding blocks  1236  respectively matched with two fifth linear chutes  1235 . The bottom of the fifth sliding plate  1234  between the two fifth sliding blocks  1236  is provided with a fifth thread insert. The fifth thread insert is threadedly connected with the fifth screw rod  1233 . A top of the fifth sliding plate  1234  is provided with the eddy-current brake sliding table  122 . 
     In an embodiment, the driving mechanism includes a variable frequency alternating-current (AC) motor  1 . An emergency brake  4  is arranged between the variable frequency AC motor  1  and the wheel  9 . The emergency brake  4  includes a brake disc  41 . An output shaft of the variable frequency AC motor  1  is connected to an input end of a rotating shaft of the brake disc  41  through a first coupling  2 . An output end of the rotating shaft of the brake disc  41  is connected to a main shaft  7  of the wheel  9  through a second coupling  5 . The input end of the rotating shaft of the brake disc  41  is rotatably arranged on a base  20  through a first bearing seat  3 . The main shaft  7  of the wheel  9  is rotatably arranged on a frame  19  through a second bearing seat  6 . 
     In an embodiment, a protective cover  11  is arranged above the wheel  9 . A bottom of the protective cover  11  is fixedly arranged on the frame  19 . 
     In an embodiment, a vibration exciter  15  is arranged above the first test object  16 . A first six-axis force sensor  21  is arranged between the vibration exciter  15  and the first test object  16 . The second test object  17  is fixedly arranged on the second clamping arm  182 . A second six-axis force sensor  22  is arranged between the second test object  17  and the second clamping arm  182 . 
     In an embodiment, the first test guideway  10  is a circular Halbach permanent magnet guideway. The second test guideway  8  is a circular metal guideway. The first test object  16  is a high-temperature superconducting magnetic levitation test object; and the second test object  17  is an electrodynamic levitation permanent magnet test object. 
     Embodiment 2 
     As shown in  FIGS.  1 - 5   , provided herein is an equipment for simulating high-speed magnetic levitation operation, which includes a wheel  9 , a driving mechanism, a first test guideway  10 , a second test guideway  8 , a first test object  16  and a second test object  17 . The wheel  9  includes a rim  91  and a hub  92 . The hub  92  is arranged at a middle of the rim  91 . The driving mechanism is configured to drive the wheel  9  to rotate. The first test guideway  10  and the second test guideway  8  are arranged on an inner wall of the rim  91 ; the first test guideway  10  is arranged on one side of the hub  92 , and the second test guideway  8  is arranged on the other side of the hub  92 . The first test object  16  is arranged in the first test guideway  10 ; and the second test object  17  is arranged in the second test guideway  8 . 
     In an embodiment, the equipment further includes a first position control device  13  and a second position control device  18 . The first position control device  13  is configured to control a reciprocating movement of the first test object  16  along an axial direction of the first test guideway  10 ; and the second position control device  18  is configured to control a reciprocating movement of the second test object  17  along an axial direction of the second test guideway  8 . 
     In an embodiment, the first position control device  13  includes a second bottom plate  1337 , a second sliding plate  1334  and a second motor  1331 . Two second linear sliding tables  1332  parallel to each other are arranged on the second bottom plate  1337 . A second screw rod  1333  is arranged between the two second linear sliding tables  1332 ; the second screw rod  1333  is connected to an output end of the second motor  1331 . A top of each of the two second linear sliding tables  1332  is provided with a second linear chute  1335 . A bottom of the second sliding plate  1334  is provided with two second sliding blocks  1336  respectively matched with two second linear chutes  1335 . The bottom of the second sliding plate  1334  between the two second sliding blocks  1336  is provided with a second thread insert. The second thread insert is threadedly connected with the second screw rod  1333 . A top of the second sliding plate  1334  is provided with a first clamping arm  132 . The first test object  16  is arranged on the first clamping arm  132 . The second screw rod  1333  and a central axis of the hub  92  are parallel to each other. 
     The second position control device  18  includes a fourth bottom plate  1837 , a fourth sliding plate  1834  and a fourth motor  1831 . Two fourth linear sliding tables  1832  parallel to each other are arranged on the fourth bottom plate  1837 . A fourth screw rod  1833  is arranged between the two fourth linear sliding tables  1832 ; the fourth screw rod  1833  is connected to an output end of the fourth motor  1831 . A top of each of the two fourth linear sliding tables  1832  is provided with a fourth linear chute  1835 . A bottom of the fourth sliding plate  1834  is provided with two fourth sliding blocks  1836  respectively matched with two fourth linear chutes  1835 . The bottom of the fourth sliding plate  1834  between the two fourth sliding blocks  1836  is provided with a fourth thread insert. The fourth thread insert is threadedly connected with the fourth screw rod  1833 . A top of the fourth sliding plate  1834  is provided with a second clamping arm  182 . The second test object  17  is arranged on the second clamping arm  182 . The fourth screw rod  1833  and a central axis of the hub  92  are parallel to each other. 
     In an embodiment, the equipment further includes an eddy-current brake device  12 . The eddy-current brake device  12  includes an eddy-current brake sliding table  122  and an eddy-current brake displacement control mechanism  123 . An end of the eddy-current brake sliding table  122  is provided with an eddy-current brake magnet  121 . The eddy-current brake displacement control mechanism  123  is configured to drive the eddy-current brake sliding table  122  to reciprocate. The hub  92  is arranged on a movement path of the eddy-current brake sliding table  122 . 
     The eddy-current brake displacement control mechanism  123  includes a fifth bottom plate  1237 , a fifth sliding plate  1234  and a fifth motor  1231 . Two fifth linear sliding tables  1232  parallel to each other are arranged on the fifth bottom plate  1237 . A fifth screw rod  1233  is arranged between the two fifth linear sliding tables  1232 ; the fifth screw rod  1233  is connected to an output end of the fifth motor  1231 . A top of each of the two fifth linear sliding tables  1232  is provided with a fifth linear chute  1235 . A bottom of the fifth sliding plate  1234  is provided with two fifth sliding blocks  1236  respectively matched with two fifth linear chutes  1235 . The bottom of the fifth sliding plate  1234  between the two fifth sliding blocks  1236  is provided with a fifth thread insert. The fifth thread insert is threadedly connected with the fifth screw rod  1233 . A top of the fifth sliding plate  1234  is provided with the eddy-current brake sliding table  122 . 
     In an embodiment, the driving mechanism includes a variable frequency AC motor  1 . An emergency brake  4  is arranged between the variable frequency AC motor  1  and the wheel  9 . The emergency brake  4  includes a brake disc  41 . An output shaft of the variable frequency AC motor  1  is connected to an input end of a rotating shaft of the brake disc  41  through a first coupling  2 . An output end of the rotating shaft of the brake disc  41  is connected to a main shaft  7  of the wheel  9  through a second coupling  5 . The input end of the rotating shaft of the brake disc  41  is rotatably arranged on a base  20  through a first bearing seat  3 . The main shaft  7  of the wheel  9  is rotatably arranged on a frame  19  through a second bearing seat  6 . 
     In an embodiment, a protective cover  11  is arranged above the wheel  9 . A bottom of the protective cover  11  is fixedly arranged on the frame  19 . 
     In an embodiment, a vibration exciter  15  is arranged above the first test object  16 . A first six-axis force sensor  21  is arranged between the vibration exciter  15  and the first test object  16 . The second test object  17  is fixedly arranged on the second clamping arm  182 . A second six-axis force sensor  22  is arranged between the second test object  17  and the second clamping arm  182 . 
     In an embodiment, the first test guideway  10  is a circular Halbach permanent magnet guideway. The second test guideway  8  is a circular metal guideway. The first test object  16  is a high-temperature superconducting magnetic levitation test object; and the second test object  17  is an electrodynamic levitation permanent magnetic test object. 
     Embodiment 3 
     As shown in  FIGS.  1 - 5   , provided herein is an equipment for simulating high-speed magnetic levitation operation, which includes a wheel  9 , a driving mechanism, a first test guideway  10 , a second test guideway  8 , a first test object  16  and a second test object  17 . The wheel  9  includes a rim  91  and a hub  92 . The hub  92  is arranged at a middle of the rim  91 . The driving mechanism is configured to drive the wheel  9  to rotate. The first test guideway  10  and the second test guideway  8  are arranged on an inner wall of the rim  91 ; the first test guideway  10  is arranged on one side of the hub  92 , and the second test guideway  8  is arranged on the other side of the hub  92 . The first test object  16  is arranged in the first test guideway  10 ; and the second test object  17  is arranged in the second test guideway  8 . 
     In an embodiment, the equipment further includes a first position control device  13  and a second position control device  18 . The first position control device  13  is configured to control a reciprocating movement of the first test object  16  along a radial direction and an axial direction of the first test guideway  10 ; and the second position control device  18  is configured to control a reciprocating movement of the second test object  17  along a radial direction and an axial direction of the second test guideway  8 . 
     In an embodiment, the first position control device  13  includes a first bottom plate  1317 , a first sliding plate  1314  and a first motor  1311 . Two first linear sliding tables  1312  parallel to each other are arranged on the first bottom plate  1317 . A first screw rod  1313  is arranged between the two first linear sliding tables  1312 ; the first screw rod  1313  is connected to an output end of the first motor  1311 . A top of each of the two first linear sliding tables  1312  is provided with a first linear chute  1315 . A bottom of the first sliding plate  1314  is provided with two first sliding blocks  1316  respectively matched with two first linear chutes  1315 . The bottom of the first sliding plate  1314  between the two first sliding blocks  1316  is provided with a first thread insert. The first thread insert is threadedly connected with the first screw rod  1313 . A top of the first sliding plate  1314  is provided with a first clamping arm  132 . The first test object  16  is arranged on the first clamping arm  132 . An extension line of an orthographic projection of the first screw rod  1313  on the hub  92  passes through a center of the hub  92 . 
     The first position control device  13  includes a second bottom plate  1337 , a second sliding plate  1334  and a second motor  1331 . Two second linear sliding tables  1332  parallel to each other are arranged on the second bottom plate  1337 . A second screw rod  1333  is arranged between the two second linear sliding tables  1332 ; the second screw rod  1333  is connected to an output end of the second motor  1331 . A top of each of the two second linear sliding tables  1332  is provided with a second linear chute  1335 . A bottom of the second sliding plate  1334  is provided with two second sliding blocks  1336  respectively matched with two second linear chutes  1335 . The bottom of the second sliding plate  1334  between the two second sliding blocks  1336  is provided with a second thread insert. The second thread insert is threadedly connected with the second screw rod  1333 . A top of the second sliding plate  1334  is provided with a first clamping arm  132 . The first test object  16  is arranged on the first clamping arm  132 . The second screw rod  1333  and a central axis of the hub  92  are parallel to each other. 
     The second position control device  18  includes a third bottom plate  1817 , a third sliding plate  1814  and a third motor  1811 . Two third linear sliding tables  1812  parallel to each other are arranged on the third bottom plate  1817 . A third screw rod  1813  is arranged between the two third linear sliding tables  1812 . The third screw rod  1813  is connected to an output end of the third motor  1811 . A top of each of the two third linear sliding tables  1812  is provided with a third linear chute  1815 . A bottom of the third sliding plate  1814  is provided with two third sliding blocks  1816  respectively matched with two third linear chutes  1815 . The bottom of the third sliding plate  1814  between the two third sliding blocks  1816  is provided with a third thread insert. The third thread insert is threadedly connected with the third screw rod  1813 . A top of the third sliding plate  1814  is provided with a second clamping arm  182 . The second test object  17  is arranged on the second clamping arm  182 . An extension line of an orthographic projection of the third screw rod  1813  on the hub  92  passes through a center of the hub  92 . 
     The second position control device  18  includes a fourth bottom plate  1837 , a fourth sliding plate  1834  and a fourth motor  1831 . Two fourth linear sliding tables  1832  parallel to each other are arranged on the fourth bottom plate  1837 . A fourth screw rod  1833  is arranged between the two fourth linear sliding tables  1832 ; the fourth screw rod  1833  is connected to an output end of the fourth motor  1831 . A top of each of the two fourth linear sliding tables  1832  is provided with a fourth linear chute  1835 . A bottom of the fourth sliding plate  1834  is provided with two fourth sliding blocks  1836  respectively matched with two fourth linear chutes  1835 . The bottom of the fourth sliding plate  1834  between the two fourth sliding blocks  1836  is provided with a fourth thread insert. The fourth thread insert is threadedly connected with the fourth screw rod  1833 . A top of the fourth sliding plate  1834  is provided with a second clamping arm  182 . The second test object  17  is arranged on the second clamping arm  182 . The fourth screw rod  1833  and a central axis of the hub  92  are parallel to each other. 
     In an embodiment, the equipment further includes an eddy-current brake device  12 . The eddy-current brake device  12  includes an eddy-current brake sliding table  122  and an eddy-current brake displacement control mechanism  123 . An end of the eddy-current brake sliding table  122  is provided with an eddy-current brake magnet  121 . The eddy-current brake displacement control mechanism  123  is configured to drive the eddy-current brake sliding table  122  to reciprocate. The hub  92  is arranged on a movement path of the eddy-current brake sliding table  122 . 
     The eddy-current brake displacement control mechanism  123  includes a fifth bottom plate  1237 , a fifth sliding plate  1234  and a fifth motor  1231 . Two fifth linear sliding tables  1232  parallel to each other are arranged on the fifth bottom plate  1237 . A fifth screw rod  1233  is arranged between the two fifth linear sliding tables  1232 ; the fifth screw rod  1233  is connected to an output end of the fifth motor  1231 . A top of each of the two fifth linear sliding tables  1232  is provided with a fifth linear chute  1235 . A bottom of the fifth sliding plate  1234  is provided with two fifth sliding blocks  1236  respectively matched with two fifth linear chutes  1235 . The bottom of the fifth sliding plate  1234  between the two fifth sliding blocks  1236  is provided with a fifth thread insert. The fifth thread insert is threadedly connected with the fifth screw rod  1233 . A top of the fifth sliding plate  1234  is provided with the eddy-current brake sliding table  122 . 
     The first motor  1311 , the second motor  1331 , the third motor  1811 , the fourth motor  1831  and the fifth motor  1231  are all servo motors. 
     In an embodiment, the driving mechanism includes a variable frequency AC motor  1 . An emergency brake  4  is arranged between the variable frequency AC motor  1  and the wheel  9 . The emergency brake  4  includes a brake disc  41 . An output shaft of the variable frequency AC motor  1  is connected to an input end of a rotating shaft of the brake disc  41  through a first coupling  2 . An output end of the rotating shaft of the brake disc  41  is connected to a main shaft  7  of the wheel  9  through a second coupling  5 . The input end of the rotating shaft of the brake disc  41  is rotatably arranged on a base  20  through a first bearing seat  3 . The main shaft  7  of the wheel  9  is rotatably arranged on a frame  19  through a second bearing seat  6 . The second coupling  5  is a ball cage universal coupling. 
     In an embodiment, a protective cover  11  is arranged above the wheel  9 . A bottom of the protective cover  11  is fixedly arranged on the frame  19 . 
     In an embodiment, a vibration exciter  15  is arranged above the first test object  16 . A first six-axis force sensor  21  is arranged between the vibration exciter  15  and the first test object  16 . The second test object  17  is fixedly arranged on the second clamping arm  182 . A second six-axis force sensor  22  is arranged between the second test object  17  and the second clamping arm  182 . 
     In an embodiment, the first test guideway  10  is a circular Halbach permanent magnet guideway. The second test guideway  8  is a circular metal guideway. The first test object  16  is a high-temperature superconducting magnetic levitation test object; and the second test object  17  is an electrodynamic levitation permanent magnet test object. The high-temperature superconducting magnetic levitation test object is also provided with a vibration sensor. The second test guideway  8  is selected from the group consisting of a circular aluminum guideway, a circular copper guideway, and so on. The high-temperature superconducting magnetic levitation test object includes a Dewar. The second test object  17  is a permanent magnet. 
     The variable frequency AC motor  1  drives the first coupling  2  to rotate, and then drives the brake disc  41  to rotate, then is configured to drive the second coupling  5  to rotate, then to drive the main shaft  7  to rotate, and then to drive the wheel  9  and the circular Halbach permanent magnet guideway and the circular aluminum guideway fixedly installed on left and right sides of the wheel to rotate. 
     When the high-temperature superconducting magnetic levitation test object is levitated in a desired gap on the circular Halbach permanent magnet guideway rotating with a high speed, the first position control device  13  is configured to drive the high-temperature superconducting magnetic levitation test object to change a displacement relative to the circular Halbach permanent magnet guideway, so that the first six-axis force sensor  21  can be configured to detect a levitation force and a guidance force under dynamic operation. In addition, When the high-temperature superconducting magnetic levitation test object is levitated in the desired gap on the circular Halbach permanent magnet guideway rotating with the high speed, the vibration exciter  15  is configured to perform vibration excitation on the high-temperature superconducting magnetic levitation test object, the first six-axis force sensor  21  and the vibration sensor can be configured to test a response of a levitation system under dynamic operation. 
     When the electrodynamic levitation permanent magnet test object is levitated in a desired gap on the circular aluminum guideway rotating with a high speed, the second position control device  18  is configured to drive the electrodynamic levitation permanent magnet test object to change a displacement relative to the circular aluminum guideway, so that the second six-axis force sensor  22  can be configured to detect a levitation force, a guidance force and a magnetic resistance under dynamic operation. 
     Described above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. It should be understood that any modifications, replacements and improvements made by those skilled in the art without departing from the spirit and scope of the present disclosure should fall within the scope of the present disclosure defined by the appended claims.