Signal magnetic ring detection equipment capable of ensuring zero deflection angle of motor and detection method of signal magnetic ring detection equipment

Abstract

The invention discloses signal magnetic ring detection equipment capable of ensuring a zero deflection angle of a motor and a detection method of the signal magnetic ring detection equipment. The signal magnetic ring detection equipment comprises a workbench, a disc seat for coaxial installation of a to-be-detected magnetic ring is rotatably installed on the workbench, a mechanical 0-degree scale line is formed on the disc seat, and the motor for driving the disc seat is installed on the workbench; the first sensor is mounted on the workbench through a first supporting rod, and the first sensor is arranged opposite to the circumferential surface of the to-be-detected magnetic ring; the second sensor is installed on the first supporting rod through a second supporting rod, the second sensor and the circumferential face of the disc base are oppositely arranged, and the second sensor and the first sensor are arranged in the radial direction of the disc base; and the controller is in signal connection with the motor, the first sensor and the second sensor. The problem that the zero deflection angle of a motor assembly is easily affected due to the fact that the magnetic field consistency cannot be guaranteed after the signal magnet ring of the motor is magnetized is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a signal magnetic ring detection device and a detection method thereof for ensuring a zero-position deflection angle of a motor. Background Art

[0002] In the application of motors, position sensors are required in some application scenarios that require precise control. When the motor is started or working, the position sensor detects the position of the rotor and then provides a position signal to the driver. After receiving the signal, the driver realizes the drive, speed regulation and position control of the motor.

[0003] In the automotive industry, magnetoresistive sensors have been widely used in automotive motors and industrial motors due to their simple structure, low cost, and integration on PCBA. Currently, the commonly used signal magnetic ring has an interference fit with the motor shaft.

[0004] If the magnetic field consistency of the signal magnetic ring cannot be guaranteed after magnetization, it will easily affect the zero position deviation angle of the motor assembly. Summary of the invention

[0005] In order to overcome the defects of the prior art, a signal magnetic ring detection device and a detection method for ensuring the zero-position deflection angle of the motor are provided to solve the problem that the magnetic field consistency of the signal magnetic ring of the motor cannot be guaranteed after magnetization, which easily affects the zero-position deflection angle of the motor assembly.

[0006] In order to achieve the above object, a signal magnetic ring detection device for ensuring the zero position deflection angle of the motor is provided, comprising:

[0007] A workbench, on which a disc seat for coaxial installation of a magnetic ring to be tested is rotatably mounted, the disc seat is formed with a mechanical 0° scale line, and a motor for driving the disc seat is mounted on the workbench;

[0008] A first sensor for collecting the magnetic field signal of the magnetic ring to be measured is installed on the workbench through a first support rod, and the first sensor is arranged opposite to the circumferential surface of the magnetic ring to be measured;

[0009] a second sensor for sensing the mechanical 0° scale line to generate a mechanical 0° signal, the second sensor being mounted on the first support rod through a second support rod, the second sensor being arranged opposite to the circumferential surface of the disc seat, and the second sensor and the first sensor being arranged along the radial direction of the disc seat;

[0010] A controller, signal-connected to the motor, the first sensor and the second sensor, wherein the controller acquires the magnetic field signal and the mechanical 0° signal to generate a magnetic field distribution curve, and calculates and obtains an angle deviation value between the mechanical 0° scale line and the magnetic field 0° signal of the magnetic ring to be measured based on the magnetic field distribution curve and the mechanical 0° signal.

[0011] Furthermore, an axial hole is vertically arranged at the center of the disc seat, and a plug-in shaft is inserted into the inner ring hole of the magnetic ring to be tested, and the lower end of the plug-in shaft is detachably inserted into the axial hole.

[0012] Furthermore, the first sensor is a magnetic encoder.

[0013] Furthermore, the second sensor is a photoelectric encoder.

[0014] The present invention provides a detection method for a signal magnetic ring detection device for ensuring a zero-position deflection angle of a motor, comprising the following steps:

[0015] Install the magnetic ring to be tested coaxially on the disc seat on the workbench;

[0016] The controller starts the motor to drive the rotating shaft, so that the disc base rotates;

[0017] The second sensor senses the mechanical 0° scale line to generate a mechanical 0° signal, and the first sensor collects the magnetic field signal of the magnetic ring to be measured;

[0018] The controller acquires the magnetic field signal and the mechanical 0° signal;

[0019] Based on the magnetic field signal, the controller generates a magnetic field distribution curve;

[0020] Based on the magnetic field distribution curve and the mechanical 0° signal, the controller calculates and obtains an angle deviation value between the mechanical 0° scale line and the magnetic field 0° signal of the magnetic ring to be measured.

[0021] The beneficial effect of the present invention is that the signal magnetic ring detection device for ensuring the zero-position deflection angle of the motor of the present invention installs the signal magnetic ring coaxially above the disc seat when detecting the signal magnetic ring. Set the detection program of the controller, let the second sensor be located on the side of the disc seat, and the first sensor be located on the side of the signal magnetic ring, and ensure the relative distance between them. Start the detection program, and the disc seat drives the signal magnetic ring to rotate together. During the rotation process, the second sensor reads the mechanical 0° scale line of the disc seat, and records the position as mechanical zero in the device program. During the rotation process, the first sensor collects the magnetic field signal of the signal magnetic ring, and the controller obtains the magnetic field signal and automatically generates a magnetic field distribution curve. The controller obtains the mechanical 0° signal collected by the second sensor and compares it with the 0° position of the magnetic field signal in the magnetic field distribution curve to calculate the angle deviation value. The signal magnetic ring detection device for ensuring the zero-position deflection angle of the motor of the present invention adopts an integrated dual detection sensor probe for automatic detection, which can accurately measure the magnetic field angle difference of the magnetic ring to be tested after magnetization to ensure the zero-position deflection angle of the motor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 The present invention is a schematic structural diagram of a signal magnetic ring detection device for ensuring the zero-position deflection angle of a motor according to an embodiment of the present invention.

[0024] Figure 2 A top view of a signal magnetic ring detection device for ensuring a zero-position deflection angle of a motor according to an embodiment of the present invention.

[0025] Figure 3 Schematic diagram of the structure of a disc seat according to an embodiment of the present invention.

[0026] Figure 4 The figure is a schematic diagram of the connection between the plug-in shaft and the magnetic ring to be tested according to an embodiment of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the magnetic field distribution curve of the magnetic ring to be tested according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Reference Figures 1 to 5 As shown, the present invention provides a signal magnetic ring detection device for ensuring the zero-position deflection angle of the motor, including: a workbench, a first sensor 4, and a second sensor 5.

[0031] In this embodiment, the workbench has a work surface. A disc seat 1 is rotatably mounted on the work surface of the workbench. The disc seat 1 is used for mounting a magnetic ring 6 to be tested. The magnetic ring to be tested is coaxially arranged with the disc seat. The disc seat 1 is formed with a mechanical 0° scale line 10.

[0032] As a preferred embodiment, an axial hole 100 is vertically arranged at the center of the disc seat 1. A plug-in shaft 61 is inserted into the inner ring hole of the magnetic ring 6 to be tested. The lower end of the plug-in shaft 61 is detachably inserted into the axial hole of the disc seat 1.

[0033] In this embodiment, the disc seat is rotatably mounted on the workbench via a vertically arranged rotating shaft. The rotating shaft is coaxially arranged with the disc seat 1. A motor is mounted on the workbench. The motor is used to drive the rotating shaft. The motor is transmission-connected to the rotating shaft.

[0034] The first sensor 4 is mounted on the workbench through the first support rod 2. The first sensor 4 is arranged opposite to the circumferential surface of the magnetic ring 6 to be measured.

[0035] The first sensor 4 is used to collect the magnetic field signal of the magnetic ring 6 to be measured. In this embodiment, the first sensor is a magnetic encoder.

[0036] The second sensor 5 is mounted on the first support rod through the second support rod 3. The second sensor 5 is arranged opposite to the circumferential surface of the disc seat 1. The second sensor 5 and the first sensor 4 are arranged along the radial direction of the disc seat 1.

[0037] The second sensor 5 is used to sense the mechanical 0° scale line 10 to generate a mechanical 0° signal. In this embodiment, the second sensor is a photoelectric encoder.

[0038] The controller is signal-connected to the motor, the first sensor 4 and the second sensor 5 .

[0039] See also Figure 5 As shown, the controller acquires the magnetic field signal and the mechanical 0° signal. Based on the corresponding time of acquiring the magnetic field signal, the controller generates a magnetic field distribution curve 7 from the magnetic field signal. Based on the magnetic field distribution curve and the mechanical 0° signal, the angle deviation value between the mechanical 0° scale line 10 and the magnetic field 0° signal of the magnetic ring 6 to be measured is calculated.

[0040] The present invention provides a detection method for a signal magnetic ring detection device for ensuring a zero-position deflection angle of a motor, comprising the following steps:

[0041] S1. Install the magnetic ring to be tested coaxially on the disc seat on the workbench;

[0042] S2, the controller starts the motor to drive the rotating shaft, so that the disc base rotates;

[0043] S3, the second sensor senses the mechanical 0° scale line to generate a mechanical 0° signal, and the first sensor collects the magnetic field signal of the magnetic ring to be tested;

[0044] S4. The controller obtains the magnetic field signal and the mechanical 0° signal.

[0045] S5. Based on the magnetic field signal, the controller generates a magnetic field distribution curve.

[0046] S6. Based on the magnetic field distribution curve and the mechanical 0° signal, the controller calculates and obtains the angle deviation value between the mechanical 0° scale line 10 and the magnetic field 0° signal of the magnetic ring 6 to be measured.

[0047] The signal magnetic ring detection device for ensuring the zero-position deflection angle of the motor of the present invention installs the signal magnetic ring coaxially above the disc seat when detecting the signal magnetic ring. Set the detection program of the controller so that the second sensor is located on the side of the disc seat, and the first sensor is located on the side of the signal magnetic ring, and the relative distance between them is guaranteed. Start the detection program, and the disc seat drives the signal magnetic ring to rotate together. During the rotation process, the second sensor reads the mechanical 0° scale line of the disc seat, and records the position as mechanical zero in the device program. During the rotation process, the first sensor collects the magnetic field signal of the signal magnetic ring, and the controller obtains the magnetic field signal and automatically generates a magnetic field distribution curve. The controller obtains the mechanical 0° signal collected by the second sensor and compares it with the 0° position of the magnetic field signal in the magnetic field distribution curve to calculate the angle deviation value. The signal magnetic ring detection device for ensuring the zero-position deflection angle of the motor of the present invention adopts an integrated dual detection sensor probe for automatic detection, and is a device that can accurately measure the angle difference of the magnetic field after magnetization.

[0048] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A signal magnetic ring detection device for ensuring the zero-position deflection angle of a motor, characterized in that: include: A workbench, on which a disc seat for coaxial installation of a magnetic ring to be tested is rotatably mounted, the disc seat is formed with a mechanical 0° scale line, and a motor for driving the disc seat is mounted on the workbench; A first sensor for collecting the magnetic field signal of the magnetic ring to be measured is installed on the workbench through a first support rod, and the first sensor is arranged opposite to the circumferential surface of the magnetic ring to be measured; a second sensor for sensing the mechanical 0° scale line to generate a mechanical 0° signal, the second sensor being mounted on the first support rod through a second support rod, the second sensor being arranged opposite to the circumferential surface of the disc seat, and the second sensor and the first sensor being arranged along the radial direction of the disc seat; A controller, signal-connected to the motor, the first sensor and the second sensor, wherein the controller acquires the magnetic field signal and the mechanical 0° signal to generate a magnetic field distribution curve, and calculates and obtains an angle deviation value between the mechanical 0° scale line and the magnetic field 0° signal of the magnetic ring to be measured based on the magnetic field distribution curve and the mechanical 0° signal.

2. The signal magnetic ring detection device for ensuring the zero-position deflection angle of the motor according to claim 1 is characterized in that: An axial hole is vertically arranged at the center of the disc seat, and a plug-in shaft is inserted into the inner ring hole of the magnetic ring to be tested, and the lower end of the plug-in shaft is detachably inserted into the axial hole.

3. The signal magnetic ring detection device for ensuring the zero-position deflection angle of the motor according to claim 1 is characterized in that: The first sensor is a magnetic encoder.

4. The signal magnetic ring detection device for ensuring the zero-position deflection angle of the motor according to claim 1 is characterized in that: The second sensor is a photoelectric encoder.

5. A detection method for a signal magnetic ring detection device for ensuring a zero-position deflection angle of a motor as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: Install the magnetic ring to be tested coaxially on the disc seat on the workbench; The controller starts the motor to drive the rotating shaft, so that the disc base rotates; The second sensor senses the mechanical 0° scale line to generate a mechanical 0° signal, and the first sensor collects the magnetic field signal of the magnetic ring to be measured; The controller acquires the magnetic field signal and the mechanical 0° signal; Based on the magnetic field signal, the controller generates a magnetic field distribution curve; Based on the magnetic field distribution curve and the mechanical 0° signal, the controller calculates and obtains an angle deviation value between the mechanical 0° scale line and the magnetic field 0° signal of the magnetic ring to be measured.

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