Multi-circle rotary transformer framework
Through the multi-turn rotation architecture, the PCBA board and sensing magnetic ring are used to realize the multi-turn signal output of the rotor transformer in harsh environments, solving the problem that a single-turn rotation cannot accurately detect the motor rotor angle and speed, and improving signal stability and applicability.
Patent Information
- Application Number
- CN202422143826.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Existing single-turn absolute rotary transformers cannot output multi-turn signals and cannot accurately obtain the motor rotor angle or speed.
The multi-turn rotary architecture is adopted, including a rotary stator, a rotary rotor, a bracket, a PCBA board and a detection element (such as a sensing magnetic ring). The output signal of the rotary stator and the signals of the detection element are processed through the PCBA board to achieve multi-turn signal output.
With almost unchanged frame size, the angle and speed signals of the motor rotor can be accurately output, which expands the product application field, has high applicability and good signal transmission stability.
Smart Images
Figure CN223091301U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, and in particular to a multi-turn resolver structure. Background Art
[0002] As a type of position sensor, the resolver (referred to as "resolver") can work under harsh environmental conditions, such as mechanical vibration, high speed, high angular acceleration, noise-free, flammable, explosive, high and low temperature (-40 to 155°C), and has the advantages of high precision, high reliability, simple and compact structure, and low cost. It is widely used as a position sensor for power motors to detect the angle and speed of the motor rotor.
[0003] Existing absolute value resolvers are all single-turn absolute type, which cannot output multi-turn signals and cannot accurately obtain the motor rotor angle or speed under the corresponding number of turns. Summary of the invention
[0004] In view of the above problems of the existing resolver transformers, the present invention aims to provide a multi-turn resolver architecture with simple structure, high applicability and high stability.
[0005] The specific technical solutions are as follows:
[0006] A multi-turn resolver structure includes a resolver stator and a resolver rotor sleeved in the resolver stator and drivingly connected to an output shaft of a motor, including:
[0007] A bracket, wherein the bracket is mounted on the resolver stator;
[0008] A PCBA board, the PCBA board is mounted on the bracket and is electrically connected to the rotating stator;
[0009] A detection element is detachably connected to the resolver rotor and is connected to the PCBA board signal for detecting the number of rotations of the resolver rotor.
[0010] As a further improvement and optimization of this solution, the detection element is a sensing magnetic ring.
[0011] As a further improvement and optimization of the present solution, the bottom of the sensing magnetic ring has a bracket, and the bracket is detachably mounted on the resolver rotor.
[0012] As a further improvement and optimization of this solution, the bracket, the resolver rotor and the output shaft of the motor are connected by fixing bolts.
[0013] As a further improvement and optimization of this solution, an installation hole is coaxially provided on the bracket, a connection hole is coaxially provided at the top of the resolver rotor, and the fixing bolt sequentially passes through the installation hole and the connection hole and is threadedly installed on the output shaft of the motor.
[0014] As a further improvement and optimization of this solution, the bottom of the bracket is connected to the top of the resolver stator, and the top is connected to the PCBA board.
[0015] As a further improvement and optimization of this solution, the top of the bracket has an installation groove, and the PCBA board is fitted and installed in the installation groove.
[0016] As a further improvement and optimization of this solution, a hole body coaxial with the installation hole is provided on the PCBA board.
[0017] As a further improvement and optimization of this solution, the PCBA board is installed in the installation groove by a plurality of fixing screws.
[0018] The positive effects of the above technical solution compared with the prior art are as follows:
[0019] (1) In the present utility model, the PCBA board receives the output signal of the resolver stator, processes the signal to obtain the angle and speed of the motor rotor under a single revolution, and at the same time, the PCBA board receives the signal detected by the detection element and processes it to obtain the number of revolutions corresponding to the rotation of the motor rotor, so that the PCBA board can accurately output the angle and speed signals of the motor rotor under different numbers of revolutions.
[0020] (2) In the present utility model, the detection element is a sensing magnetic ring. While the sensing magnetic ring rotates following the resolver rotor, the sensing magnetic ring transmits non-contact signals to the PCBA board in the form of magnetoelectric signals, and the signal transmission stability is high.
[0021] (3) In the present utility model, multi-turn signals can be output with almost unchanged outer frame dimensions, without affecting the environmental tolerance of the original resolver, expanding the application field of the product, and can be installed or expanded as an independent component, with high applicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic structural diagram of a multi-turn resolver architecture of the present utility model;
[0023] Figure 2 It is an exploded view of a multi-turn resolver architecture of the present utility model;
[0024] In the attached drawings: 1. resolver stator; 2. bracket; 3. PCBA board; 4. fixing bolt; 5. fixing screw; 6. resolver rotor; 7. sensing magnetic ring; 21. mounting groove; 31. hole body; 61. connecting hole; 71. support; 711. mounting hole. Detailed implementation manners
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the attached drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0026] In the description of the present utility model, it should be noted that terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0028] Figure 1 It is a structural schematic diagram of a multi-turn resolver architecture of the present utility model. Figure 2 It is an exploded view of a multi-turn resolver architecture of the present utility model. As Figure 1-2 shown, it shows a multi-turn resolver architecture of a preferred embodiment, including a resolver stator 1 and a resolver rotor 6 sleeved inside the resolver stator 1 and drivingly connected to the output shaft of the motor, including a bracket 2, a PCBA board 3 and a detection element. The bracket 2 is installed on the resolver stator 1, the PCBA board 3 is installed on the bracket 2 and electrically connected to the rotating stator, and the detection element is detachably connected to the resolver rotor 6 and signal-connected to the PCBA board 3 for detecting the number of rotation turns of the resolver rotor 6.
[0029] In this embodiment, the PCBA board 3 receives the output signal of the resolver stator 1, processes the signal to obtain the angle and speed of the motor rotor in a single revolution, and at the same time, the PCBA board 3 receives the signal detected by the detection element and processes it to obtain the number of revolutions corresponding to the rotation of the motor rotor. Therefore, the PCBA board 3 can accurately output the angle and speed signals of the motor rotor at different numbers of revolutions.
[0030] Further, as a preferred embodiment, the detection element is a sensing magnetic ring 7. While the sensing magnetic ring 7 rotates following the resolver rotor 6, the sensing magnetic ring 7 performs non-contact signal transmission to the PCBA board 3 in the form of magnetoelectric signals, and the signal transmission stability is high.
[0031] Further, as a preferred embodiment, the bottom of the sensing magnetic ring 7 has a bracket 71, and the bracket 71 is detachably installed on the resolver rotor 6.
[0032] Further, as a preferred embodiment, the bracket 71, the resolver rotor 6, and the output shaft of the motor are connected by a fixing bolt 4.
[0033] In another embodiment, the bracket 71 and the resolver rotor 6 can also be fixed by means such as pasting, welding, and riveting.
[0034] Further, as a preferred embodiment, the bracket 71 is coaxially provided with a mounting hole 711, the top of the resolver rotor 6 is coaxially provided with a connection hole 61, and the fixing bolt 4 sequentially passes through the mounting hole 711 and the connection hole 61 and is threadedly installed on the output shaft of the motor.
[0035] Further, as a preferred embodiment, the bottom of the bracket 2 is connected to the top of the resolver stator 1, and the top is connected to the PCBA board 3.
[0036] Further, as a preferred embodiment, the top of the bracket 2 has a mounting groove 21, and the PCBA board 3 is fitted and installed in the mounting groove 21. By embedding the PCBA board 3 into the top of the bracket 2, the overall volume of the device is reduced.
[0037] Further, as a preferred embodiment, the PCBA board 3 has a hole body 31 coaxial with the mounting hole 711, and the fixing bolt 4 can be disassembled and assembled through the hole body 31, which is convenient for disassembly and assembly.
[0038] Further, as a preferred embodiment, the PCBA board 3 is installed in the mounting groove 21 by a plurality of fixing screws 5.
[0039] In this embodiment, multi-turn signals can be output with almost unchanged outer frame dimensions, without affecting the environmental tolerance of the original resolver, expanding the application field of the product, and can be added or expanded as an independent component, with high applicability.
[0040] In another embodiment, when manufacturing the resolver stator 1 and the resolver rotor 6 of the resolver, the bracket 2, the PCBA board can be directly manufactured at the end of the resolver stator 1, and the sensing magnetic ring 7 can be manufactured at the end of the resolver rotor 6 without assembly, which improves the integrity and stability of the device.
[0041] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.
Claims
1. A multi-turn resolver architecture includes a resolver stator and a resolver rotor sleeved inside the resolver stator and drivingly connected to the output shaft of the motor, characterized in that Comprising: A bracket, which is mounted on the resolver stator; A PCBA board, which is mounted on the bracket and electrically connected to the resolver stator; A detection element, which is detachably connected to the resolver rotor and signal-connected to the PCBA board for detecting the number of rotation turns of the resolver rotor.
2. The multi-turn resolver architecture according to claim 1, wherein The detection element is a sensing magnetic ring.
3. The multi-turn resolver architecture according to claim 2, characterized in that, The bottom of the sensing magnetic ring has a socket, and the socket is detachably mounted on the resolver rotor.
4. The multi-turn resolver architecture according to claim 3, wherein, The socket, the resolver rotor and the output shaft of the motor are connected by fixing bolts.
5. The multi-turn resolver architecture according to claim 4, characterized in that, An installation hole is coaxially provided on the socket, a connection hole is coaxially provided on the top of the resolver rotor, and the fixing bolt sequentially passes through the installation hole and the connection hole and is threadedly installed on the output shaft of the motor.
6. The multi-turn resolver architecture according to claim 5, characterized in that, The bottom of the bracket is connected to the top of the resolver stator, and the top is connected to the PCBA board.
7. The multi-turn resolver architecture according to claim 6, wherein, The top of the bracket has an installation groove, and the PCBA board is fitted and installed in the installation groove.
8. The multi-turn resolver architecture according to claim 7, wherein, The PCBA board has a hole body coaxial with the installation hole.
9. The multi-turn resolver architecture according to claim 7, characterized in that The PCBA board is installed in the installation groove by a plurality of fixing screws.