CN114895221B - Fixing device, rotary transformer testing method and testing device - Google Patents

Abstract

The invention discloses a fixing device, a testing method and a testing device for a rotary transformer, and belongs to the technical field of rotary transformers. According to the fixing device, the testing method and the testing device for the rotary transformer, the fixing device is used for testing the rotary transformer, the rotor locking assembly and the elastic supporting assembly of the rotor fixing mechanism can be used for adjusting the height of the rotor, and the plurality of stator locking assembly of the stator fixing mechanism can be used for adjusting the coaxiality of the stator and the rotor so as to accurately adjust the relative position between the rotor and the stator, so that the accuracy of testing results is improved, and the fixing device is applicable to fixing rotary transformers with different sizes. The rotary transformer testing method utilizes the fixing device to install the rotary transformer on the motor test table, and can debug a rotary transformer circuit matched with the rotary transformer. The rotary transformer testing device improves the accuracy of the testing result by applying the fixing device.

Description

Fixing device, rotary transformer testing method and testing device

Technical Field

The invention relates to the technical field of rotary transformers, in particular to a fixing device, a rotary transformer testing method and a rotary transformer testing device.

Background

The new energy electric vehicle uses a rotary transformer (hereinafter referred to as rotary transformer) to return accurate rotating speed and position signals, and provides torque output calculation reference for motor control. When testing the exciting signal and the return signal processing circuit matched with the rotation variation, the fact that the circuit board rotation variation exciting and decoding circuit (hereinafter referred to as rotation variation circuit) actually shows whether the circuit board rotation variation exciting and decoding circuit accords with the design value cannot be verified due to the fact that a proper rotation variation fixing device is not provided.

In the prior art, a rotary transformer circuit generally obtains a rough waveform on a circuit board by using a method of manually adjusting the relative positions of the rotary transformer rotor and the stator in a hardware debugging stage, so that a designer can roughly debug the circuit board. Only when the motor bench tests, whether the rotary transformer circuit accords with the expected state can be finally verified, and the motor test bench is tense in resource and high in cost, the hardware debugging cost is high, and the hardware debugging verification cannot be supported in the initial design stage.

In addition, the vertical relative position and coaxiality between the rotor and the stator during the test can also affect the test result.

Disclosure of Invention

The first object of the present invention is to provide a fixing device, which can precisely adjust the relative position between a rotor and a stator, and can be used for fixing rotary transformers with different sizes, and has wide application range.

The second object of the present invention is to provide a testing method for a resolver, which uses the fixing device to mount the resolver on a motor test board, so as to debug a resolver circuit matched with the resolver, thereby being beneficial to improving the reliability of the resolver circuit and improving the debugging efficiency.

The third object of the present invention is to provide a testing device for a resolver, which is capable of debugging a resolver circuit matched with the resolver by mounting the resolver on a motor test stand by using the fixing device, thereby being beneficial to improving the reliability of the resolver circuit and improving the debugging efficiency.

In order to achieve the above object, the following technical scheme is provided:

In a first aspect, there is provided a fixture for mounting a rotor and a stator of a rotary transformer to a motor test stand, respectively, comprising:

The rotor fixing mechanism is made of non-magnetic conductive materials and comprises a rotor locking assembly and an elastic supporting assembly, wherein the elastic supporting assembly is arranged between the rotor and a motor rotating shaft of the motor test table, the elastic supporting assembly is configured to enable the rotor to always have a movement trend away from the motor rotating shaft along the vertical direction, and the rotor locking assembly can lock or unlock the rotor and the motor rotating shaft of the motor test table;

the stator fixing mechanism comprises a plurality of stator locking assemblies which are circumferentially distributed on the periphery of the stator, wherein the stator locking assemblies can be abutted with the stator, and the stator locking assemblies can selectively move along the radial direction of the stator or are fixedly connected with the motor test bench.

As an alternative to the fixing means, the elastic support assembly comprises:

the two support plates are arranged at intervals along the vertical direction; the rotor is placed on the supporting plate above;

the elastic pieces are clamped between the two supporting plates.

As an alternative to the securing means, the rotor locking assembly comprises:

The pressing plate is pressed at the top end of the rotor; the outer diameter of the pressing plate is smaller than the inner diameter of the stator;

The rotor locking piece can lock or unlock the pressing plate and the motor rotating shaft, and can adjust the distance between the two supporting plates.

As an alternative to the fixing means, the stator fixing mechanism further includes:

the fixed table is fixedly arranged on the motor test table;

The stator locking assemblies are arranged in one-to-one correspondence with the corresponding stator locking assemblies, the sliding rails extend along the radial direction of the stator, and the stator locking assemblies can selectively slide along the corresponding sliding rails or are fixedly connected with the sliding rails.

As an alternative of the fixing device, a plurality of sliding rails are provided with scale marks.

As an alternative to the securing means, the stator locking assembly comprises:

The connecting sliding blocks are slidably arranged on the corresponding sliding rails along the radial direction of the stator; the sliding rail is provided with a sliding groove which is arranged corresponding to the connecting sliding block;

The top end of the stator locking piece can be abutted to the top surface of the corresponding sliding rail, and the bottom end of the stator locking piece penetrates through the sliding groove and is in threaded connection with the connecting sliding block.

In a second aspect, there is provided a method of testing a resolver, the resolver being mounted to a motor test stand using a fixture as claimed in any one of the preceding claims, comprising the steps of:

acquiring operation data I of a motor test board, wherein the operation data I comprises rotation speed data I and position data I;

The circuit board to be tested sends an excitation signal to the motor test board;

the circuit board to be tested acquires operation data II of a motor of the motor test board, wherein the operation data II comprises rotation speed data II and position data II;

acquiring the second operation data, and comparing the first operation data with the second operation data to judge whether the circuit board to be tested works normally or not;

and acquiring the waveform of the excitation signal and the waveform of the operation data II, judging whether the waveform of the excitation signal accords with a design value, and judging whether the waveform of the operation data II accords with a calculated value.

In a third aspect, there is provided a resolver test apparatus comprising:

A motor test stand to which a rotary transformer to be tested is mounted by means of the fixing device according to any one of the above;

The upper computer is used for acquiring operation data I of a motor of the motor test board, wherein the operation data I comprises rotation speed data I and position data I; the motor test board is also used for acquiring second operation data of a motor of the motor test board, which is acquired by the circuit board to be tested, wherein the second operation data comprises second rotation speed data and second position data; the upper computer can also compare the first operation data with the second operation data to judge whether the circuit board to be tested works normally or not;

And the oscilloscope is used for acquiring the waveform of the excitation signal sent to the motor test board by the circuit board to be tested and the waveform of the second operation data, judging whether the waveform of the excitation signal accords with a design value or not, and judging whether the waveform of the second operation data accords with a calculated value or not.

As an alternative to the resolver test apparatus, the motor of the motor test stand is a servo motor.

As an alternative scheme of the rotary transformer testing device, the upper computer is connected with the motor testing table through a serial port;

the upper computer is connected with the circuit board to be tested through a CAN line.

Compared with the prior art, the invention has the beneficial effects that:

the fixing device is used for fixing the rotor and the stator of the rotary transformer so as to test the rotary transformer, the height of the rotor can be adjusted through the rotor locking assembly and the elastic supporting assembly, and the coaxiality of the stator and the rotor can be adjusted through the plurality of stator locking member assemblies so as to accurately adjust the relative position between the rotor and the stator, thereby being beneficial to improving the accuracy of test results and being applicable to fixing rotary transformers with different sizes.

According to the testing method of the rotary transformer, the rotary transformer is installed on the motor test board by using the fixing device, so that the rotary transformer circuit matched with the rotary transformer can be debugged, the reliability of the rotary transformer circuit can be improved, and the debugging efficiency can be improved.

According to the rotary transformer testing device, the rotary transformer is arranged on the motor testing table by applying the fixing device, so that the rotary transformer circuit matched with the rotary transformer can be debugged, the reliability of the rotary transformer circuit can be improved, and the debugging efficiency can be improved.

Drawings

FIG. 1 is a schematic view of a rotor fixing mechanism of a fixing device according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a stator fixing mechanism of a fixing device according to an embodiment of the present invention;

FIG. 3 is a second schematic structural view of a stator fixing mechanism of the fixing device according to the embodiment of the present invention;

FIG. 4 is a schematic view of an elastic support assembly according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a second embodiment of an elastic support assembly;

FIG. 6 is a flowchart of a testing method of a rotary transformer according to an embodiment of the invention;

fig. 7 is a schematic structural diagram of a testing device for a rotary transformer according to an embodiment of the invention.

Reference numerals:

100. a rotary transformer; 101. a rotor; 102. a stator;

200. a motor test board; 201. a motor; 2011. a motor shaft;

300. A circuit board to be tested;

400. an upper computer;

500. An oscilloscope;

600. 220V power supply;

700. a 12V power supply;

1. A rotor fixing mechanism; 11. a rotor locking assembly; 111. a pressing plate; 112. a rotor locking member; 12. an elastic support assembly; 121. a support plate; 122. an elastic member;

2. A stator fixing mechanism; 21. a stator locking assembly; 211. the connecting slide block; 212. a stator locking member; 22. a fixed table; 23. a slide rail; 231. graduation marks.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; it may be a mechanical connection that is made, or may be an electrical connection. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

As shown in fig. 1-5, the present embodiment provides a fixing device for respectively mounting a rotor 101 and a stator 102 of a rotary transformer 100 on a motor test board 200, the fixing device includes a rotor fixing mechanism 1 and a stator fixing mechanism 2, each component of the rotor fixing mechanism 1 is made of a non-magnetic material, the rotor fixing mechanism 1 includes a rotor locking component 11 and an elastic supporting component 12, the elastic supporting component 12 is disposed between the rotor 101 and a motor shaft 2011 of the motor test board 200, the elastic supporting component 12 is configured such that the rotor 101 always has a movement trend away from the motor shaft 2011 along a vertical direction, and the rotor locking component 11 can lock or unlock the rotor 101 and the motor shaft 2011 of the motor test board 200; the stator fixing mechanism 2 includes a plurality of stator locking assemblies 21 circumferentially arranged around the stator 102, the stator locking assemblies 21 can abut against the stator 102, and the stator locking assemblies 21 can selectively move along the radial direction of the stator 102 or be fixedly connected with the motor test stand 200.

The fixing device is used for fixing the rotor 101 and the stator 102 of the rotary transformer 100 so as to test the rotary transformer 100, the height of the rotor 101 can be adjusted through the rotor locking assembly 11 and the elastic supporting assembly 12, and the coaxiality of the stator 102 and the rotor 101 can be adjusted through the plurality of stator locking member 212 assemblies so as to accurately adjust the relative position between the rotor 101 and the stator 102, thereby being beneficial to improving the accuracy of test results and being applicable to fixing rotary transformers 100 with different sizes.

Optionally, the rotor locking assembly 11 includes a pressing plate 111 and a rotor locking member 112, where the pressing plate 111 is pressed on the top end of the rotor 101; the outer diameter of the pressing plate 111 is smaller than the inner diameter of the stator 102, so that the pressing plate 111 can enter the stator 102 and can move up and down in the stator 102, and the requirement for adjusting the height of the rotor 101 is met. The rotor lock 112 can lock or unlock the platen 111 with the motor shaft 2011. Illustratively, the rotor locking member 112 is a bolt, the pressing plate 111 is provided with a first through hole through which a rod portion of the bolt passes, the head of the bolt abuts against the top surface of the pressing plate 111, and the rod portion passes through the first through hole to be in screwed connection with the motor rotating shaft 2011 of the motor test stand 200, so as to compress and fix the rotor 101 through the pressing plate 111. The head of the bolt can not only play a role of pressing the pressing plate 111, but also serve as a handle for screwing the bolt, and the rod part is in threaded connection with the motor rotating shaft 2011, so that the rotor 101 can be conveniently dismounted.

Alternatively, the elastic support assembly 12 includes two support plates 121 and a plurality of elastic members 122, the two support plates 121 being spaced apart in a vertical direction; the rotor 101 is placed on a supporting plate 121 positioned above, and a second penetrating hole for the rotor locking piece 112 to penetrate is formed in the center of the supporting plate 121; the plurality of elastic members 122 are sandwiched between the two support plates 121. So set up, above-mentioned bolt (rotor retaining member 112) passes the second through-hole of backup pad 121 and the spiro union of motor shaft 2011, through the interval of screwing on between two backup pads 121 of adjusting that above-mentioned bolt, adjust the height of rotor 101 promptly, the operation is simple and direct, still is convenient for control rotor 101 and stator 102 are located same height, is favorable to improving rotary transformer 100's test accuracy.

Preferably, a plurality of elastic members 122 are uniformly distributed along the circumferential direction of the support plate 121 to ensure that the elastic support assembly 12 can smoothly support the rotor 101. Illustratively, the elastic member 122 is a spring, which is inexpensive.

The rotor 101 is connected with a motor rotating shaft 2011 of the motor test bench 200 so as to rotate under the drive of the motor 201, the stator 102 needs to be fixed, and in order to facilitate the matching of the fixing device with different motor test benches 200, optionally, the stator fixing mechanism 2 further comprises a fixing bench 22 and a plurality of sliding rails 23, and the fixing bench 22 is fixedly arranged on the motor test bench 200; the plurality of sliding rails 23 are arranged in one-to-one correspondence with the plurality of stator locking assemblies 21, the sliding rails 23 extend along the radial direction of the stator 102, and the stator locking assemblies 21 can selectively slide along the corresponding sliding rails 23 or are fixedly connected with the sliding rails 23. The fixing device of the present embodiment is suitable for rotary transformers 100 with different sizes, and when different motor test boards 200 need to be matched, only the fixing board 22 needs to be detached and then fixedly installed on a new motor test board 200. The sliding rail 23 can improve the moving precision of the stator locking assembly 21, so as to accurately control the relative position between the rotor 101 and the stator 102 and improve the testing precision of the rotary transformer 100.

Optionally, the plurality of sliding rails 23 are each provided with graduation marks 231. The moving amount of the stator locking assemblies 21 can be checked in real time through the graduation marks 231, and the distances between the plurality of stator locking assemblies 21 and the axis of the stator 102 can be controlled to be equal, so that the stator 102 and the rotor 101 can be concentric rapidly and accurately.

Optionally, the stator locking assembly 21 includes a connecting slider 211 and a stator locking member 212, where the connecting slider 211 is slidably disposed on a corresponding sliding rail 23 along a radial direction of the stator 102; the slide rail 23 is provided with a slide groove which is arranged corresponding to the connecting slide block 211; the top end of the stator locking member 212 can be abutted against the top surface of the corresponding sliding rail 23, and the bottom end of the stator locking member 212 passes through the sliding groove and is in threaded connection with the connecting sliding block 211. The arrangement is such that the connecting slider 211 can move along the radial direction of the stator 102 synchronously with the stator locking member 212, and the interval between the stator locking member 212 and the axis of the stator 102 can be continuously adjusted, so that the connecting slider is suitable for fixing the stators 102 with different sizes. When the stator locking member 212 moves to the target position, the stator locking member 212 is directly tightened and the stator locking member 212 is abutted with the stator 102, so that the operation is convenient.

As shown in fig. 6 and fig. 7, the present embodiment further provides a testing method of a rotary transformer, in which the rotary transformer 100 is mounted on the motor test stand 200 by using the fixing device, and the method includes the following steps:

S1, acquiring operation data I of a motor 201 of a motor test board 200, wherein the operation data I comprises rotation speed data I and position data I;

s2, the circuit board 300 to be tested sends an excitation signal to the motor test board 200;

s3, the circuit board 300 to be tested acquires operation data II of the motor 201 of the motor test board 200, wherein the operation data II comprises rotation speed data II and position data II;

s4, acquiring operation data II, and comparing the operation data I with the operation data II to judge whether the circuit board 300 to be tested works normally or not;

In this embodiment, the host computer 400 is used to obtain and compare the first operation data and the second operation data.

The motor test stand 200 is driven by the exciting signal, and simultaneously, can return the rotation speed data and the position data to the circuit board 300 to be tested through two groups of return signals, and the circuit board 300 to be tested decodes the return signals through an internal circuit and sends analysis data comprising the rotation speed and the position to the upper computer 400 according to a specific protocol.

It should be noted that, the first operation data is directly obtained from the motor test stand 200, the second operation data is obtained from the motor test stand 200 through the circuit board 300 to be tested, and the reliability of the circuit board 300 to be tested can be verified by comparing the first operation data with the second operation data.

S5, acquiring the waveform of the excitation signal and the waveform of the operation data II, judging whether the waveform of the excitation signal accords with the design value, and judging whether the waveform of the operation data II accords with the calculated value.

In this embodiment, the waveform of the excitation signal and the waveform of the operation data two are monitored by the oscilloscope 500.

By comparing the waveform of the excitation signal with the design value, whether the excitation signal generated by the circuit board 300 to be tested accords with the design value or not can be verified, and then comparing the second operation data generated by the motor test board 200 under the excitation of the excitation signal with the calculated value, closed loop verification can be realized on the circuit board 300 to be tested, and the test efficiency is high. The calculated value is the operation data that should be generated by the motor test stand 200 theoretically calculated from the design value of the excitation signal.

According to the testing method of the rotary transformer, the rotary transformer 100 is mounted on the motor testing table 200 by using the fixing device, so that a rotary transformer circuit matched with the rotary transformer 100 can be debugged, the reliability of the rotary transformer circuit can be improved, and the debugging efficiency can be improved.

The present embodiment also provides a testing device for a rotary transformer, which can implement the testing method for a rotary transformer, and includes a motor testing stand 200, an upper computer 400 and an oscilloscope 500, where the rotary transformer 100 to be tested is installed on the motor testing stand 200 through the fixing device; the upper computer 400 is used for acquiring operation data I of the motor 201 of the motor test stand 200, wherein the operation data I comprises rotation speed data I and position data I; the second operation data is also used for acquiring second operation data of the motor 201 of the motor test board 200, which is acquired by the circuit board 300 to be tested, and the second operation data comprises second rotation speed data and second position data; the upper computer 400 can also compare the first operation data with the second operation data to determine whether the circuit board 300 to be tested works normally; the oscilloscope 500 is used for acquiring the waveform of the excitation signal sent to the motor test board 200 by the circuit board 300 to be tested and the waveform of the second operation data, judging whether the waveform of the excitation signal accords with a design value, and judging whether the waveform of the second operation data accords with a calculated value.

By applying the fixing device to mount the rotary transformer 100 on the motor test board 200, the rotary transformer circuit matched with the rotary transformer 100 can be debugged, thereby being beneficial to improving the reliability of the rotary transformer circuit and improving the debugging efficiency.

When the resolver test device of the present embodiment is used to test the resolver 100 to be tested and the circuit to be tested, the circuit board 300 to be tested sends an excitation signal to the motor test board 200, the motor test board 200 is operated under the excitation of the excitation signal, the upper computer 400 directly obtains the operation data one from the motor test board 200, the upper computer 400 can also obtain the operation data two from the motor test board 200 through the circuit board 300 to be tested, and the reliability of the circuit board 300 to be tested can be verified by comparing the operation data one with the operation data two.

Specifically, the motor test board 200 is driven by the excitation signal, and simultaneously, can return the rotation speed data and the position data to the circuit board 300 to be tested through two groups of return signals, and the circuit board 300 to be tested decodes the return signals through an internal circuit and sends the decoded return signals to the upper computer 400 through analysis data including the rotation speed and the position according to a specific protocol.

The oscillograph 500 monitors the waveform of the excitation signal and the waveform of the operation data II, compares the waveform of the excitation signal with the design value, can verify whether the excitation signal generated by the circuit board 300 to be tested accords with the design value, and compares the operation data II generated by the motor test board 200 under the excitation of the excitation signal with the calculated value, wherein the calculated value is the operation data which is calculated according to the design value of the excitation signal and is generated by the motor test board 200 in theory, can realize closed loop verification of the circuit board 300 to be tested, and has high test efficiency.

Optionally, the resolver test device further includes a 220V power 600 and a 12V power 700, where the 220V power 600 is used for supplying power to the motor test board 200, and the 12V power 700 is a dc power for supplying power to the circuit board 300 to be tested, so as to ensure that the motor test board 200 and the circuit board 300 to be tested work normally.

Optionally, the motor 201 of the motor test stand 200 is a servo motor. The servo motor 201 has higher precision, so that the motor test board 200 can be prevented from influencing the testing results of the rotary transformer 100 and the circuit board 300 to be tested.

Optionally, the upper computer 400 is connected with the motor test stand 200 through a serial port. Because the data volume transmitted between the motor test board 200 and the upper computer 400 is small, the cost can be reduced by adopting simple serial connection. Optionally, the upper computer 400 is connected with the circuit board 300 to be tested through a CAN line, so that the data transmission reliability is high, and the communication line CAN be simplified.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (9)

1. A resolver test apparatus comprising:

A motor test board (200), wherein the rotary transformer (100) to be tested is arranged on the motor test board (200) through a fixing device; wherein the fixing device is used for respectively installing a rotor (101) and a stator (102) of the rotary transformer (100) to be tested on the motor test table (200), and the fixing device comprises:

The rotor fixing mechanism (1) is made of a non-magnetic conductive material and comprises a rotor locking assembly (11) and an elastic supporting assembly (12), wherein the elastic supporting assembly (12) is arranged between the rotor (101) and a motor rotating shaft (2011) of the motor test table (200), the elastic supporting assembly (12) is configured to enable the rotor (101) to always have a movement trend away from the motor rotating shaft (2011) along the vertical direction, and the rotor locking assembly (11) can lock or unlock the rotor (101) and the motor rotating shaft (2011) of the motor test table (200);

The stator fixing mechanism (2) comprises a plurality of stator locking assemblies (21) which are circumferentially arranged on the periphery of the stator (102) along the stator (102), wherein the stator locking assemblies (21) can be abutted with the stator (102), and the stator locking assemblies (21) can selectively move along the radial direction of the stator (102) or are fixedly connected with the motor test bench (200);

The resolver test apparatus further includes: the upper computer (400) is used for acquiring operation data I of a motor (201) of the motor test board (200), wherein the operation data I comprises rotation speed data I and position data I; the motor test board is also used for acquiring second operation data of a motor (201) of the motor test board (200) obtained by the circuit board (300) to be tested, wherein the second operation data comprises second rotation speed data and second position data; the upper computer (400) can also compare the first operation data with the second operation data to judge whether the circuit board (300) to be tested works normally or not;

and the oscilloscope (500) is used for acquiring the waveform of the excitation signal sent to the motor test board (200) by the circuit board to be tested (300) and the waveform of the second operation data, judging whether the waveform of the excitation signal accords with a design value or not, and judging whether the waveform of the second operation data accords with a calculated value or not.

2. Resolver test arrangement according to claim 1, characterized in that the elastic support assembly (12) comprises:

The two support plates (121), the two support plates (121) are arranged at intervals along the vertical direction; -the rotor (101) is placed on the support plate (121) located above;

And the elastic pieces (122) are clamped between the two support plates (121).

3. Resolver test arrangement according to claim 2, characterized in that the rotor locking assembly (11) comprises:

A pressing plate (111), wherein the pressing plate (111) is pressed on the top end of the rotor (101); the outer diameter of the pressing plate (111) is smaller than the inner diameter of the stator (102);

And the rotor locking piece (112), the rotor locking piece (112) can lock or unlock the pressing plate (111) and the motor rotating shaft (2011), and can adjust the interval between the two supporting plates (121).

4. Resolver test arrangement according to claim 1, characterized in that the stator fixing mechanism (2) further comprises:

the fixed table (22) is fixedly arranged on the motor test table (200);

The plurality of sliding rails (23) are arranged in one-to-one correspondence with the plurality of stator locking assemblies (21), the sliding rails (23) extend along the radial direction of the stator (102), and the stator locking assemblies (21) can selectively slide along the corresponding sliding rails (23) or are fixedly connected with the sliding rails (23).

5. Resolver test device according to claim 4, characterized in that a plurality of said sliding tracks (23) are each provided with graduation marks (231).

6. Resolver test arrangement according to claim 4, characterized in that the stator locking assembly (21) comprises:

The connecting sliding blocks (211) are arranged on the corresponding sliding rails (23) in a sliding manner along the radial direction of the stator (102); the sliding rail (23) is provided with a sliding groove which is arranged corresponding to the connecting sliding block (211);

The top end of the stator locking piece (212) can be abutted to the top surface of the corresponding sliding rail (23), and the bottom end of the stator locking piece (212) penetrates through the sliding groove and is in threaded connection with the connecting sliding block (211).

7. The resolver test apparatus according to claim 1, wherein the motor (201) of the motor test stand (200) is a servo motor (201).

8. The resolver test apparatus according to claim 1, wherein the upper computer (400) is connected to the motor test stand (200) through a serial port;

the upper computer (400) is connected with the circuit board (300) to be tested through a CAN line.

9. A method of testing a resolver using a resolver test apparatus according to any one of claims 1 to 8, wherein the fixture mounts the resolver (100) to be tested to a motor test stand (200), comprising the steps of:

Acquiring operation data I of a motor (201) of a motor test board (200), wherein the operation data I comprises rotation speed data I and position data I;

The circuit board (300) to be tested sends an excitation signal to the motor test board (200);

The circuit board (300) to be tested acquires second operation data of a motor (201) of the motor test board (200), wherein the second operation data comprises second rotation speed data and second position data;

acquiring the second operation data, and comparing the first operation data with the second operation data to judge whether the circuit board (300) to be tested works normally or not;

and acquiring the waveform of the excitation signal and the waveform of the operation data II, judging whether the waveform of the excitation signal accords with a design value, and judging whether the waveform of the operation data II accords with a calculated value.