Dual-redundancy angular displacement sensor and consistency adjusting method thereof

Abstract

The invention provides a dual-redundancy angular displacement sensor and a consistency adjusting method thereof, and relates to the technical field of sensor design. Comprising a front shell, a front stator iron core assembly pressed on the inner side of the front shell, an output shaft of which one end penetrates through the front shell and is supported by a bearing, a front rotor iron core assembly pressed at one end of the output shaft and matched with the front stator iron core assembly, a rear rotor iron core assembly pressed at the other end of the output shaft, and a rear shell fixedly connected with the front shell, and the rear stator iron core assembly is pressed on the inner side of the rear shell and is matched with the rear rotor iron core assembly to work. According to the method, by optimizing the product structure and changing the front and back channel output consistency debugging method, the product structure size is reduced, and the product reliability and the installation and adjustment qualification rate are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sensor design, and in particular provides a dual-redundancy angular displacement sensor and a consistency adjustment method thereof. Background Art

[0002] At present, with the continuous innovation and progress of the aviation industry, angular displacement sensors have been rapidly developed due to their wide range of uses and large market demand. Due to the different installation locations and use environments of angular displacement sensors, there are higher requirements for the volume, reliability and other indicators of the sensors. The higher the requirements, the more difficult it is to assemble and debug the products. At present, most dual-redundancy angular displacement sensor housings adopt an integrated design, and the rotors adopt a split design. During assembly and debugging, the requirements for the output consistency indicators of the front and rear channels are mainly ensured by fixing the housing and adjusting the relative positions of the front and rear rotor core assemblies. This type of structural product has large axial dimensions, large volume, heavy weight, and complex locking of the relative positions of the front and rear rotor core assemblies. The locking structure involves many parts and poor processability, resulting in low product reliability, difficult assembly and debugging, and a low pass rate. Summary of the invention

[0003] The purpose of this application is to solve the shortcomings of angular displacement sensors in the prior art, and to propose a dual-redundancy angular displacement sensor structure and consistency debugging method, so as to reduce the product structure size and improve product reliability and assembly pass rate by optimizing the product structure and changing the front and rear channel output consistency debugging method.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a dual-redundancy angular displacement sensor, comprising: a front housing, a front stator core assembly pressed on the inner side of the front housing, an output shaft with one end passing through the front housing and supported by a bearing, a front rotor core assembly pressed on one end of the output shaft and cooperating with the front stator core assembly, a rear rotor core assembly pressed on the other end of the output shaft, a rear housing fixedly connected to the front housing, a rear stator core assembly pressed on the inner side of the rear housing and cooperating with the rear rotor core assembly, a shielding assembly is also provided in the front housing to divide the front housing into a front channel and a rear channel, the front rotor core assembly and the front stator core assembly are located in the front channel, the rear rotor core assembly and the rear stator core assembly are located in the rear channel, the front housing is also provided with a through hole for the cable to pass through, and the angular position of the front rotor core assembly is consistent with that of the rear rotor core assembly.

[0005] The dual-redundant angular displacement sensor provided by the present invention also has the following technical features: the front stator core assembly has the same structure as the rear stator core assembly, and the front stator core assembly includes a front stator core, a coil wound around the front stator core, and a protective cover arranged at one end of the front stator core.

[0006] The dual-redundancy angular displacement sensor provided by the present invention also has the following technical feature: the hardness of the material used for the protective cover is not less than 200 HB.

[0007] The dual-redundant angular displacement sensor provided by the present invention also has the following technical features: the front housing is further provided with a threaded hole for the output shaft to pass through; the sensor is further provided with a screw plug that cooperates with the threaded hole; the screw plug presses the bearing.

[0008] The dual-redundant angular displacement sensor provided by the present invention also has the following technical features: the rear housing is also provided with an end cover, the other end of the output shaft is provided with a second bearing that matches the rear rotor core assembly, and an adjustment gasket is provided between the second bearing and the end cover.

[0009] The dual-redundant angular displacement sensor provided by the present invention also has the following technical feature: the rear housing is provided with an adjustment hole for adjusting the relative position of the rear housing and the front housing.

[0010] The dual-redundant angular displacement sensor provided by the present invention also has the following technical features: there are three adjustment holes, the three adjustment holes are at the same distance from the center of the rear shell body, the distance between the adjustment holes and the center of the rear shell body is 1 / 3-1 / 2 of the radius of the rear shell body, and the line segment angle formed between adjacent adjustment holes and the center of the rear shell body is 120°.

[0011] The dual-redundant angular displacement sensor provided by the present invention also has the following technical feature: the front housing is further provided with a wire pressing cover installed at the through hole.

[0012] Another object of the present invention is to provide a method for adjusting consistency of a dual-redundancy angular displacement sensor, the method for adjusting the sensor as described in any one of the above items comprising:

[0013] S1: Detect the polarity of the front channel and the rear channel of the sensor to be installed;

[0014] S2: Fixing the portion of the output shaft passing through the front housing and the front housing on a test turntable;

[0015] S3: Use the adjustment tool to rotate the rear housing through the adjustment hole to adjust the position of the rear housing relative to the front housing. During the adjustment process, perform a 0-position test on the front channel and the rear channel. When the 0-position of the front channel and the rear channel coincide, the adjustment is completed.

[0016] S4: Weld the adjusted rear housing to the front housing.

[0017] Beneficial Effects

[0018] The present application proposes a dual-redundancy angular displacement sensor structure and consistency debugging method, which reduces the product structure size and improves product reliability and assembly pass rate by optimizing the product structure and changing the front and rear channel output consistency debugging method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is an overall cross-sectional view of the dual-redundancy angular displacement sensor provided by the present invention;

[0021] Figure 2 A schematic cross-sectional view of a rotor structure provided by an embodiment of the present invention;

[0022] Figure 3 A schematic cross-sectional view of a front housing portion provided by an embodiment of the present invention;

[0023] Figure 4 A cross-sectional schematic diagram of a rear housing portion provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of a sensor debugging tool provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the wire pressing plate provided in an embodiment of the present invention.

[0026] Among them, 1: front housing; 2: front stator core assembly; 3: rear housing; 4: rear stator core assembly; 5: output shaft; 6: front rotor core assembly; 7: rear rotor core assembly; 8: adjustment tooling. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings and examples, but it should be noted that these implementation methods are not limitations of the present application, and equivalent changes or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these implementation methods are all within the scope of protection of the present application.

[0028] In the description of the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the creation of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the creation of the present application.

[0029] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0030] The terms "installed", "connected" and "connected" 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention of this application can be understood by specific circumstances.

[0031] like Figure 1-6 As shown, the embodiment of the present application provides a dual-redundant angular displacement sensor, comprising a front housing 1, a front stator core assembly 2 press-fitted on the inner side of the front housing 1, an output shaft 5 having one end passing through the front housing 1 and supported by a bearing, a front rotor core assembly 6 press-fitted on one end of the output shaft 5 and cooperating with the front stator core assembly 2, a rear rotor core assembly 7 press-fitted on the other end of the output shaft 5, a rear housing 3 fixedly connected to the front housing 1, and a rear stator core assembly 4 press-fitted on the inner side of the rear housing 3 and cooperating with the rear rotor core assembly 7.

[0032] The front housing 2 is also provided with a shielding component for dividing the front housing 2 into a front channel and a rear channel.

[0033] The front rotor core assembly 6 and the front stator core assembly 2 are located in the front channel.

[0034] The rear rotor core assembly 7 and the rear stator core assembly 4 are located in the rear channel.

[0035] The front housing 1 is also provided with a through hole for the cable to pass through.

[0036] The angular positions of the front rotor core assembly 6 and the rear rotor core assembly 7 are consistent.

[0037] In some embodiments, the front stator core assembly 2 has the same structure as the rear stator core assembly 4, and the front stator core assembly 2 includes a front stator core, a coil wound around the front stator core, and a protective cover arranged at one end of the front stator core.

[0038] In some embodiments, the hardness of the material used for the protective cover is not less than 200 HB.

[0039] In some embodiments, the front housing 1 is further provided with a threaded hole for the output shaft to pass through, and the sensor is further provided with a screw plug that cooperates with the threaded hole, and the screw plug presses the bearing.

[0040] In some embodiments, the rear housing 3 is further provided with an end cover, the other end of the output shaft is provided with a second bearing matched with the rear rotor core assembly, and an adjustment gasket is provided between the second bearing and the end cover.

[0041] In some embodiments, the rear housing 3 is provided with an adjustment hole for adjusting the relative position of the rear housing 3 and the front housing 1 .

[0042] In some embodiments, there are three adjustment holes, the three adjustment holes are at the same distance from the center of the rear shell, the distance between the adjustment holes and the center of the rear shell is 1 / 3-1 / 2 of the radius of the rear shell, and the angle between adjacent adjustment holes and the center of the rear shell is 120°.

[0043] In some embodiments, the front housing 1 is further provided with a wire crimping cover installed at the through hole.

[0044] In some embodiments, a method for adjusting consistency of a dual-redundancy angular displacement sensor is provided, the method for adjusting the sensor as described in any one of the above items comprising:

[0045] S1: Detect the polarity of the front channel and the rear channel of the sensor to be installed;

[0046] S2: Fixing the portion of the output shaft passing through the front housing 1 and the front housing 1 on a test turntable;

[0047] S3: Use the adjusting tool 8 to rotate the rear housing 3 through the adjusting hole to adjust the position of the rear housing 3 relative to the front housing 1. During the adjustment process, the front channel and the rear channel are tested for 0 position. When the 0 position of the front channel and the rear channel coincide, the adjustment is completed.

[0048] S4: Weld the adjusted rear housing to the front housing.

[0049] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A dual-redundancy angular displacement sensor, characterized in that: include: A front housing, a front stator core assembly pressed inside the front housing, an output shaft with one end passing through the front housing and supported by a bearing, a front rotor core assembly pressed on one end of the output shaft and cooperating with the front stator core assembly, a rear rotor core assembly pressed on the other end of the output shaft, a rear housing fixedly connected to the front housing, and a rear stator core assembly pressed on the inside of the rear housing and cooperating with the rear rotor core assembly. The front housing is also provided with a shielding component for dividing the front housing into a front channel and a rear channel. The front rotor core assembly and the front stator core assembly are located in the front channel. The rear rotor core assembly and the rear stator core assembly are located in the rear channel. The front housing is also provided with a through hole for the cable to pass through. The front rotor core assembly and the rear rotor core assembly are angularly aligned.

2. The dual-redundancy angular displacement sensor according to claim 1, characterized in that: The front stator core assembly has the same structure as the rear stator core assembly, and comprises a front stator core, a coil wound around the front stator core, and a protective sleeve arranged at one end of the front stator core.

3. The dual-redundant angular displacement sensor according to claim 2, characterized in that: The hardness of the material used for the protective cover is not less than 200HB.

4. The dual-redundant angular displacement sensor according to claim 1, characterized in that: The front housing is further provided with a threaded hole for the output shaft to pass through, and the sensor is further provided with a screw plug that matches the threaded hole, and the screw plug presses the bearing.

5. The dual-redundant angular displacement sensor according to claim 1, characterized in that: The rear housing is also provided with an end cover, the other end of the output shaft is provided with a second bearing matched with the rear rotor core assembly, and an adjustment gasket is provided between the second bearing and the end cover.

6. The dual-redundant angular displacement sensor according to claim 1, characterized in that: The rear shell is provided with an adjustment hole for adjusting the relative position of the rear shell and the front shell.

7. The dual-redundant angular displacement sensor according to claim 6, characterized in that: There are three adjustment holes, and the three adjustment holes are at the same distance from the center of the rear shell. The distance between the adjustment holes and the center of the rear shell is 1 / 3-1 / 2 of the radius of the rear shell, and the angle between adjacent adjustment holes and the center of the rear shell is 120°.

8. The dual-redundant angular displacement sensor according to claim 1, characterized in that: The front housing is also provided with a wire pressing cover installed at the through hole.

9. A method for adjusting consistency of a dual-redundancy angular displacement sensor, characterized in that: The adjustment method is used to adjust the sensor according to any one of claims 1 to 8, comprising: S1: Detect the polarity of the front channel and the rear channel of the sensor to be installed; S2: Fixing the portion of the output shaft passing through the front housing and the front housing on a test turntable; S3: Use the adjustment tool to rotate the rear housing through the adjustment hole to adjust the position of the rear housing relative to the front housing. During the adjustment process, perform a 0-position test on the front channel and the rear channel. When the 0-position of the front channel and the rear channel coincide, the adjustment is completed. S4: Weld the adjusted rear housing to the front housing.

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