Quick response precise angle feedback type rotor

Abstract

The utility model relates to rotor angle detection device technical field, concretely, it relates to the quick response's accurate angle feedback type rotor, including rotor body, the shaft body of rotor body can detachably install the magnetic grid ring, the annular side surface of magnetic grid ring is fixedly installed with a plurality of ring shape equidistance arrangement's magnetic grid tooth, the outside of rotor body is equipped with the outer fixed ring, the inner annular side surface of outer fixed ring is fixedly installed with a plurality of ring shape equidistance arrangement's hall detection subassembly, and hall detection subassembly includes the shielded shell fixedly installed on the inner annular side surface of outer fixed ring, and the shielded shell is fixedly installed with hall sensor, is provided with signal conditioning circuit on hall sensor, and one side of rotor body is provided with signal processing module, and signal processing module is electrically connected with data output interface. The utility model has the advantages of high-precision capture, reduces error, and is beneficial to accurate feedback.

Description

Technical Field

[0001] This utility model relates to the technical field of rotor angle detection devices, and more specifically, to a fast-response, precise angle feedback rotor. Background Technology

[0002] With the trend of integration between the automotive industry and e-sports entertainment, racing simulators are widely used in professional training, automotive research and development, and mass entertainment. The response speed and angle feedback accuracy of the rotor, a core component of the steering system, directly determine the realism of the handling and the user's immersion.

[0003] The traditional rotors in current racing simulator steering systems mostly use ordinary DC motors in conjunction with incremental encoders, which have obvious drawbacks: First, there is a significant response delay. Ordinary DC motor rotors have large inertia, and incremental encoders need to accumulate pulses to calculate the steering angle. During rapid steering operations, the torque output and angle acquisition delay can reach 50-100ms, resulting in asynchronous feedback and operation, which undermines immersion and misleads professional training judgment. Second, the angle feedback accuracy is insufficient. The encoder resolution is only 1000-2000 lines, which is easily affected by interference and pulse loss. During fine adjustments, it cannot capture minute angle changes, resulting in steering "play".

[0004] As racing simulators become more professional and precise, traditional rotors are struggling to meet the demands. In professional training, latency can negatively impact training effectiveness; in high-end entertainment settings, latency and precision deficiencies can lead to operator fatigue. Some improvement solutions fail to address the core issues, such as using brushless motors without optimizing the encoder coupling structure, or increasing the encoder line count to exacerbate response latency. These solutions cannot achieve a balance between "fast response" and "precise feedback," thus affecting the accuracy of detection and the overall performance. Therefore, we propose a fast-response, precision angle feedback rotor. Utility Model Content

[0005] The purpose of this invention is to provide a fast-response, precise angle feedback rotor to address the deficiencies mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A fast-response, precise angle feedback rotor includes a rotor body. A magnetic grating ring is detachably mounted on the shaft of the rotor body. Multiple magnetic grating teeth arranged in a ring at equal intervals are fixedly mounted on the annular side of the magnetic grating ring. An outer fixing ring is fitted around the rotor body. Multiple Hall effect detection components arranged in a ring at equal intervals are fixedly mounted on the inner annular side of the outer fixing ring. Each Hall effect detection component includes a shielding shell fixedly mounted on the inner annular side of the outer fixing ring. A Hall effect sensor is fixedly mounted inside the shielding shell. The Hall effect sensor is equipped with a signal conditioning circuit. A signal processing module is located on one side of the rotor body. The signal processing module is electrically connected to a data output interface.

[0007] Preferably, a positioning protrusion is fixedly installed on the rotor body, and a positioning groove is provided on the side of the magnetic grating ring, with the positioning protrusion and the positioning groove engaging in a snap-fit ​​relationship. This setting enables the positioning operation for the installation of the magnetic ring.

[0008] Preferably, the size of the positioning protrusion is adapted to the size of the positioning groove, and a fixing sleeve is fixedly installed on the side of the magnetic grid ring, and the fixing sleeve is detachably installed on the rotor body; This setting facilitates the fixed installation of the magnetic ring.

[0009] Preferably, the outer fixing ring is provided with a plurality of wiring holes arranged in a ring at equal intervals, and a fixing base is fixedly installed at the bottom of the outer fixing ring, and the fixing base is detachably installed on the external frame; The wiring holes in this feature facilitate wiring operations, and the fixed base facilitates installation and removal.

[0010] Preferably, a plurality of fixing protrusions are fixedly installed on the shell of the shielding shell, and the fixing protrusions are detachably installed on the inner side of the outer fixing ring; This feature facilitates the installation and removal of the shielding enclosure.

[0011] Preferably, the magnetic grating ring and the magnetic grating teeth are integrally formed, the tooth pitch of the magnetic grating teeth is 0.1~0.5mm, and the polarities of adjacent magnetic grating teeth are alternately arranged.

[0012] Preferably, the number of Hall detection components is 3 to 6 sets, the included angle between two adjacent sets of Hall detection components is between 60 degrees and 120 degrees, and the detection center of each set of Hall detection components is coaxial with the axis of the magnetic grating ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves high-precision capture of the rotor body rotation angle by setting a cooperative structure between the magnetic grating ring and the Hall detection component, combined with the small tooth pitch design of 0.1~0.5mm for the magnetic grating teeth and the alternating polarity arrangement of adjacent magnetic grating teeth. Compared with traditional incremental encoders, the Hall sensor can directly detect changes in the magnetic grating teeth without accumulating pulses. With the addition of a signal conditioning circuit to reduce the influence of electromagnetic interference, it effectively solves the problems of insufficient accuracy of traditional rotor angle feedback and easy loss of pulses, resulting in steering "virtual position". It achieves the effect of accurately capturing minute angle changes and improving the angle feedback resolution.

[0014] 2. This utility model optimizes the transmission and signal processing paths between the rotor body and the detection components. It replaces the mechanical coupling between the traditional motor and encoder with non-contact detection by the magnetic ring and Hall effect detection components, reducing the response delay caused by transmission inertia. At the same time, the setting of the signal processing module and data output interface accelerates the transmission and processing speed of angle signals, avoiding the problem of increased response delay caused by simply increasing the number of encoder lines in traditional improvement schemes. It achieves synchronization between rotor rotation and angle feedback, thereby reducing the delay between operation and feedback and improving the response speed of the simulated racing car steering system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is one of the partial structural schematic diagrams of this utility model; Figure 3 This is the second partial structural schematic diagram of the present utility model; The meanings of the labels in the diagram are as follows: 1. Rotor body; 10. Magnetic grid ring; 101. Positioning groove; 11. Magnetic grid teeth; 12. Fixing sleeve; 13. Positioning protrusion; 2. Outer fixing ring; 20. Wiring hole; 21. Hall effect detection assembly; 211. Shielding shell; 212. Hall effect sensor; 213. Fixing protrusion; 214. Signal conditioning circuit; 22. Fixing base; 3. Signal processing module; 30. Data output interface. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-3This utility model provides a technical solution: a fast-response, precise angle feedback rotor, including a rotor body 1. A magnetic grating ring 10 is detachably mounted on the shaft of the rotor body 1. Multiple magnetic grating teeth 11 arranged in a ring at equal intervals are fixedly mounted on the annular side of the magnetic grating ring 10. An outer fixing ring 2 is sleeved on the outside of the rotor body 1. Multiple Hall effect detection components 21 arranged in a ring at equal intervals are fixedly mounted on the inner annular side of the outer fixing ring 2. Each Hall effect detection component 21 includes a shielding shell 211 fixedly mounted on the inner annular side of the outer fixing ring 2. A Hall sensor 212 is fixedly mounted inside the shielding shell 211. The Hall sensor 212 is equipped with a signal conditioning circuit 214, and a signal processing module 3 is provided on one side of the rotor body 1. The signal processing module 3 is electrically connected to a data output interface 30, which makes the magnetic grating ring 10 rotate synchronously with the rotor body 1. The magnetic field change of the magnetic grating teeth 11 is captured by the Hall sensor 212 in the Hall detection component 21. The signal conditioning circuit 214 optimizes the detection signal and transmits it to the signal processing module 3. Finally, the precise angle data is output through the data output interface 30, realizing the real-time and high-precision detection of the rotor rotation angle, and providing a reliable angle feedback basis for the steering system of the simulated racing car.

[0018] like Figure 2 As shown, a positioning protrusion 13 is fixedly installed on the rotor body 1, and a positioning groove 101 is provided on the side of the magnetic grating ring 10. The positioning protrusion 13 and the positioning groove 101 are engaged and matched, which can quickly determine the relative position of the magnetic grating ring 10 with the rotor body 1 when installing it, avoid the angle detection error caused by the installation offset of the magnetic grating ring 10, ensure that the magnetic grating ring 10 and the rotor body 1 rotate coaxially, and improve the accuracy of angle feedback.

[0019] In this embodiment, the size of the positioning protrusion 13 is adapted to the size of the positioning groove 101. A fixing sleeve 12 is fixedly installed on the side of the magnetic grating ring 10. The fixing sleeve 12 is detachably installed on the rotor body 1. This not only securely fixes the magnetic grating ring 10 to the shaft of the rotor body 1, preventing the magnetic grating ring 10 from loosening and shifting when the rotor rotates, but also allows for convenient disassembly and replacement when the magnetic grating ring 10 is worn or damaged, reducing maintenance costs and operational difficulty.

[0020] like Figure 1 As shown, the outer fixing ring 2 is provided with multiple wiring holes 20 arranged in a ring at equal intervals. A fixing base 22 is fixedly installed at the bottom of the outer fixing ring 2. The fixing base 22 can be detachably installed on the external frame, so that the wiring holes 20 provide a neat wire passage for the connection wires of the Hall detection component 21, avoiding messy and tangled wires that affect the operation of the equipment. At the same time, the fixing base 22 can be detachably installed on the external frame, which makes it easy to stably fix the entire rotor structure in the racing simulator system, and also makes it easy to adjust the installation position according to the usage requirements, improving the installation flexibility of the equipment.

[0021] In addition, multiple fixing protrusions 213 are fixedly installed on the housing of the shielding shell 211. The fixing protrusions 213 can be detachably installed on the inner side of the outer fixing ring 2. This not only allows for the quick installation and fixing of the Hall detection component 21, but also enables the convenient disassembly of the shielding shell 211 for repair or replacement when the Hall sensor 212 malfunctions. At the same time, the shielding shell 211 can isolate external electromagnetic interference and ensure the stability of the detection signal of the Hall sensor 212.

[0022] Specifically, the magnetic grating ring 10 and the magnetic grating teeth 11 are integrally formed. The tooth pitch of the magnetic grating teeth 11 is 0.1~0.5mm. The polarity of adjacent magnetic grating teeth 11 is alternated, which enhances the structural strength of the magnetic grating teeth 11 and prevents the magnetic grating teeth 11 from falling off. At the same time, the small tooth pitch design of 0.1~0.5mm and the alternating polarity of adjacent magnetic grating teeth 11 greatly improve the resolution of angle detection, allowing the Hall sensor 212 to capture the small angle changes of the rotor and further improve the angle feedback accuracy.

[0023] It is worth noting that the number of Hall detection components 21 is 3 to 6 sets, and the included angle between two adjacent sets of Hall detection components 21 is between 60 degrees and 120 degrees. The detection center of each set of Hall detection components 21 is coaxial with the axis of the magnetic grating ring 10, which can detect the rotation state of the magnetic grating ring 10 from multiple directions simultaneously. Even if a single Hall detection component 21 fails temporarily, the other components can still work normally, ensuring the continuity and reliability of angle detection. At the same time, multiple sets of detection data can be cross-checked to reduce the error caused by a single detection.

[0024] It is worth noting that the Hall detection component 21 is used to acquire the magnetic flux change signal generated when the magnetic grating ring 10 rotates in real time; the signal processing module 3 is electrically connected to multiple Hall detection components 21 respectively, and is used to perform noise reduction, differential amplification and angle calculation on the acquired magnetic flux change signal to generate a rotor angle digital signal; the data output interface 30 is used to transmit the rotor angle digital signal to an external control device; the Hall sensor 212 adopts a dual-channel quadrature output Hall chip, and the phase difference of the output signal is 90°; the signal conditioning circuit 214 includes a low-pass filter and a differential amplifier, which are used to filter out high frequencies. Interference signals are amplified and weak magnetic flux change signals are blocked; the shielding shell 211 is made of permalloy material to isolate external electromagnetic interference; the signal processing module 3 includes an FPGA chip, a data buffer unit and an error compensation unit; the FPGA chip is used to synchronously acquire and calculate the output signals of multiple Hall detection components 21 in real time, with a calculation frequency of not less than 1MHz; the data buffer unit is used to temporarily store the angle calculation results to avoid data loss; the error compensation unit pre-stores the tooth pitch error and temperature drift coefficient of the magnetic grating ring 10, and is used to correct the calculated rotor angle signal in real time.

[0025] Finally, it should be noted that the Hall sensor 212, signal conditioning circuit 214, signal processing module 3, corresponding control system, software program, and external power supply involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted controllers and power supplies, are connected by wires. The specific connection method should refer to the working principle of this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0026] When using the fast-response, precise angle feedback rotor of this utility model, firstly, the outer fixing ring 2 is detachably installed on the external frame of the racing simulator system via the fixing base 22. Then, the Hall detection component 21 connection wire is passed through the wiring hole 20 and electrically connected to the signal processing module 3. Next, the data output interface 30 is connected to the external control equipment. At the same time, the magnetic grid ring 10 is checked to ensure that the positioning protrusion 13 and the positioning groove 101 are engaged in place. The fixing sleeve 12 is securely installed on the rotor body 1. During operation, the rotor body 1 rotates, driving the magnetic grating ring 10 to rotate synchronously. The magnetic grating teeth 11 generate changes in magnetic flux. In the Hall detection component 21, the shielding shell 211 isolates electromagnetic interference. The dual-channel orthogonal output Hall sensor 212 collects the magnetic flux change signal in real time. The low-pass filter of the signal conditioning circuit 214 filters out high-frequency interference, and the differential amplifier amplifies the weak signal before transmitting the signal to the signal processing module 3. The signal processing module 3 synchronously acquires multiple sets of signals and calculates the angle in real time. The processed data is then transmitted to the external control device via the data output interface 30 to complete the angle feedback.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fast-response, precise angle feedback rotor, comprising a rotor body (1), characterized in that: A magnetic grating ring (10) is detachably mounted on the shaft of the rotor body (1). Multiple magnetic grating teeth (11) arranged in a ring at equal intervals are fixedly mounted on the annular side of the magnetic grating ring (10). An outer fixing ring (2) is sleeved on the outside of the rotor body (1). Multiple Hall detection components (21) arranged in a ring at equal intervals are fixedly mounted on the inner annular side of the outer fixing ring (2). The Hall detection component (21) includes a shielding shell (211) fixedly mounted on the inner annular side of the outer fixing ring (2). A Hall sensor (212) is fixedly mounted inside the shielding shell (211). A signal conditioning circuit (214) is provided on the Hall sensor (212). A signal processing module (3) is provided on one side of the rotor body (1). A data output interface (30) is electrically connected to the signal processing module (3).

2. The fast-response, precise angle feedback rotor according to claim 1, characterized in that: A positioning protrusion (13) is fixedly installed on the rotor body (1), and a positioning groove (101) is provided on the side of the magnetic grating ring (10). The positioning protrusion (13) and the positioning groove (101) are engaged.

3. The fast-response, precise angle feedback rotor according to claim 2, characterized in that: The size of the positioning protrusion (13) is adapted to the size of the positioning groove (101). A fixing sleeve (12) is fixedly installed on the side of the magnetic grid ring (10). The fixing sleeve (12) is detachably installed on the rotor body (1).

4. The fast-response, precise angle feedback rotor according to claim 1, characterized in that: The outer fixing ring (2) is provided with a plurality of wiring holes (20) arranged in a ring shape at equal intervals. A fixing base (22) is fixedly installed at the bottom of the outer fixing ring (2). The fixing base (22) can be detachably installed on the external frame.

5. The fast-response, precise angle feedback rotor according to claim 1, characterized in that: The shielding shell (211) has a plurality of fixing protrusions (213) fixedly installed on its shell. The fixing protrusions (213) are detachably installed on the inner side of the outer fixing ring (2).

6. The fast-response, precise angle feedback rotor according to claim 1, characterized in that: The magnetic grating ring (10) and the magnetic grating teeth (11) are integrally formed. The tooth pitch of the magnetic grating teeth (11) is 0.1~0.5mm, and the polarities of adjacent magnetic grating teeth (11) are alternately arranged.

7. The fast-response, precise angle feedback rotor according to claim 1, characterized in that: The number of Hall detection components (21) is 3 to 6 sets, the angle between two adjacent sets of Hall detection components (21) is between 60 degrees and 120 degrees, and the detection center of each set of Hall detection components (21) is coaxial with the axis of the magnetic grating ring (10).

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