Method, device and equipment for measuring temperature characteristics of an inductive synchronizer in a vacuum environment

Abstract

The application relates to the technical field of inductive synchro technology, and discloses a method, device and equipment for measuring temperature characteristics of an inductive synchro in a vacuum environment, which comprises the following steps: controlling a rotating mechanism of the inductive synchro to rotate to a plurality of specified angles and locking, wherein the inductive synchro has a fine channel electrical period, and the specified angles are determined according to phase information corresponding to the fine channel electrical period; under the condition that the rotating mechanism is locked at each specified angle, adjusting the ambient temperature of a measurement environment to change between preset temperature intervals, and statically collecting angle information output by the inductive synchro to obtain a static measurement result corresponding to each specified angle; and determining a temperature characteristic measurement result of the inductive synchro according to the ambient temperature and the static measurement result corresponding to each of the plurality of specified angles. The application can quickly and effectively measure the temperature characteristics of the inductive synchro in different temperature fields, and provides a reliable basis for temperature compensation of a high-precision angle measurement system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inductive synchronizer, and particularly to a method, device and equipment for measuring temperature characteristics of an inductive synchronizer in a vacuum environment. BACKGROUND

[0002] In the field of aerospace, the remote sensing observation system of a high-orbit satellite needs a high-precision scanning control angle measurement system to achieve fine detection of the earth's surface. The inductive synchronizer is a common choice for the angle measurement system in this application scenario due to its non-contact measurement and anti-electromagnetic interference characteristics.

[0003] However, when the inductive synchronizer is applied to a spacecraft or other vacuum environment, the extreme environment can cause thermal expansion of the device material, which in turn causes the inductive synchronizer to have angle measurement errors. Therefore, how to accurately obtain the thermal expansion characteristics of the inductive synchronizer in the vacuum environment has become a problem to be solved. SUMMARY

[0004] The present application provides a method, device and equipment for measuring temperature characteristics of an inductive synchronizer in a vacuum environment, which solves the technical problem that it is currently difficult to accurately obtain the thermal expansion characteristics of the inductive synchronizer in the vacuum environment, and can quickly and effectively measure the temperature characteristics of the inductive synchronizer at different temperature fields, providing a reliable basis for temperature compensation of a high-precision angle measurement system.

[0005] To achieve the above purpose, the main technical scheme adopted by the present application includes:

[0006] In a first aspect, the present application provides a method for measuring temperature characteristics of an inductive synchronizer in a vacuum environment, the inductive synchronizer being arranged in a measurement environment that is vacuum and temperature-variable, and the method comprising:

[0007] controlling a rotating mechanism of the inductive synchronizer to rotate to a plurality of specified angles and lock, wherein the inductive synchronizer has a fine channel electrical period, and the specified angles are determined according to phase information corresponding to the fine channel electrical period;

[0008] adjusting an environmental temperature of the measurement environment to change between a preset temperature range, and collecting static angle information output by the inductive synchronizer during the change of the environmental temperature to obtain a static measurement result corresponding to each specified angle, when the rotating mechanism is locked at each specified angle;

[0009] determining a temperature characteristic measurement result of the inductive synchronizer according to the environmental temperature and the static measurement result corresponding to each of the plurality of specified angles.

[0010] The temperature characteristic measurement method provided in the embodiments of the present application determines the specified angle and locks the rotating mechanism according to the electrical cycle phase information of the precision channel, only needs to select the angle corresponding to the key position to analyze the influence of temperature change on the induction synchronizer, and significantly reduces the measurement workload. Moreover, the temperature of the measurement environment is measured and the corresponding angle information is collected in the locked state of the specified angle, the relationship between the temperature change corresponding to the specific angle and the output angle information of the induction synchronizer can be accurately obtained, and thus the temperature characteristic measurement result is obtained. Not only can the thermal expansion effect of the induction synchronizer in the vacuum variable temperature environment be accurately quantified, but also the measurement efficiency of the temperature characteristic is greatly improved, and thus the accuracy of the angle measurement system is improved, and key technical support is provided for the engineering application of high-precision remote sensing equipment.

[0011] Optionally, in some embodiments of the present application, the specified angle is determined by the following method, comprising:

[0012] determining the electrical cycle corresponding to the precision channel of the induction synchronizer;

[0013] determining the specified angle according to the mechanical angle corresponding to the specified cosine phase in the electrical cycle, wherein the specified cosine phase comprises at least one of 0, π / 4, π / 2 and 3π / 4.

[0014] The embodiments of the present application select the key positions in the half electrical cycle of the precision channel of the induction synchronizer as the specified cosine phase, and the selected specified cosine phase can cover the maximum value and the maximum slope of the cosine induction electromotive force output by the precision channel of the induction synchronizer, so as to ensure comprehensive measurement of the induction synchronizer under different working conditions, and thus facilitate effective and accurate analysis of the temperature characteristics of the induction synchronizer.

[0015] Optionally, in some embodiments of the present application, the environmental temperature of the measurement environment is adjusted to change between the preset temperature intervals, comprising:

[0016] determining the upper limit temperature value and the lower limit temperature value of the preset temperature interval, and adjusting the environmental temperature to the upper limit temperature value;

[0017] adjusting the environmental temperature from the upper limit temperature value to the lower limit temperature value in a preset step, and then adjusting the environmental temperature from the lower limit temperature value to the upper limit temperature value in a preset step.

[0018] The preset temperature interval with redundancy space is set relative to the actual working temperature of the induction synchronizer, so as to improve the adaptability and reliability of the static measurement result to the actual complex working condition. In addition, the preset step is used to gradually adjust from the upper limit temperature value to the lower limit temperature value, and then reversely adjust from the lower limit temperature value to the upper limit temperature value, so as to comprehensively cover the two different temperature change processes of temperature rise and temperature drop, so that the static acquisition process is more complete and comprehensive, thereby greatly improving the accuracy and comprehensiveness of the subsequent static measurement result.

[0019] Optionally, in some embodiments of the present application, the induction synchronizer comprises a fine channel and a coarse channel, and the static measurement result comprises a fine channel static acquisition result and a coarse channel static acquisition result; the static acquisition of the angle information output by the induction synchronizer to obtain the static measurement result corresponding to each specified angle comprises:

[0020] acquiring the angle information output by the fine channel based on the preset sampling frequency to obtain the fine channel static acquisition result;

[0021] At the same time of acquiring the fine channel, the angle information output by the coarse channel is synchronously acquired based on the preset sampling frequency to obtain the coarse channel static acquisition result.

[0022] Optionally, in some embodiments of the present application, a plurality of temperature measurement points are arranged on the induction synchronizer, and the temperature characteristic measurement result of the induction synchronizer is determined according to the environment temperature corresponding to each temperature measurement point and the static measurement result corresponding to each of the plurality of specified angles, comprising:

[0023] acquiring the environment temperature corresponding to each temperature measurement point and the static measurement result corresponding to each of the plurality of specified angles, and respectively performing normalization processing on the environment temperature and the static measurement result to obtain normalized temperature data and normalized static measurement data;

[0024] fitting the normalized temperature data and the normalized static measurement data corresponding to each temperature measurement point respectively to obtain an initial temperature rise fitting curve and an initial temperature drop fitting curve corresponding to each temperature measurement point;

[0025] performing discrete mean calculation on the initial temperature rise fitting curve of each temperature measurement point to obtain a target temperature rise fitting curve corresponding to each of the plurality of specified angles, and performing discrete mean calculation on the initial temperature drop fitting curve of each temperature measurement point to obtain a target temperature drop fitting curve corresponding to each of the plurality of specified angles;

[0026] The target temperature rising fitting curve and the target temperature falling fitting curve are averaged to obtain an average temperature characteristic curve corresponding to each of the plurality of specified angles, and the temperature characteristic measurement result is determined by using the average temperature characteristic curve.

[0027] The embodiment of the present application can comprehensively obtain temperature information at different positions by setting multiple temperature measurement points on the inductive synchronizer, and can eliminate dimensional differences of data by combining with normalization processing to improve data processing accuracy, and then fit the data of each temperature measurement point to obtain an initial temperature rising fitting curve and an initial temperature falling fitting curve. The initial temperature rising fitting curve and the initial temperature falling fitting curve are fused to reduce the influence of random errors, so as to comprehensively improve the accuracy of the temperature characteristic measurement result by using the average temperature characteristic curve.

[0028] Optionally, in some embodiments of the present application, after the temperature characteristic measurement result of the inductive synchronizer is determined according to the environmental temperature and the static measurement result, the method further comprises:

[0029] Adjusting the environmental temperature of the measurement environment to the lower limit temperature value, and gradually adjusting the environmental temperature from the lower limit temperature value to the upper limit temperature value according to the preset step size;

[0030] Controlling the rotating mechanism to rotate at a constant speed in a preset angle range after each adjustment, and dynamically collecting the actual angle of the rotating mechanism and the angle information output by the inductive synchronizer corresponding to the environmental temperature during the constant speed rotation to obtain a dynamic measurement result;

[0031] Determining a temperature characteristic reference result of the inductive synchronizer according to the actual angle, the dynamic measurement result, and the corresponding environmental temperature;

[0032] Verifying the temperature characteristic measurement result by using the temperature characteristic reference result, and if the temperature characteristic reference result and the temperature characteristic measurement result satisfy a preset matching condition, determining that the temperature characteristic measurement result passes the verification.

[0033] The embodiment of the present application performs dynamic collection of angle information in a preset angle range at different environmental temperatures, so as to verify the temperature characteristic measurement result obtained by static measurement by using the temperature characteristic reference result obtained by dynamic measurement, ensures the universality of the static measurement method, and effectively guarantees the reliability and accuracy of the temperature characteristic measurement result.

[0034] Optionally, in some embodiments of the present application, the control of the rotating mechanism to rotate at a constant speed in a preset angle range comprises:

[0035] Determining an angle lower limit value and an angle upper limit value of the preset angle range;

[0036] controlling the rotating mechanism to rotate at a constant speed from the lower limit value of the angle to the upper limit value of the angle, and then rotate at a constant speed from the upper limit value of the angle to the lower limit value of the angle;

[0037] wherein the lower limit value of the angle is less than the minimum value in the specified angle, and the upper limit value of the angle is greater than the maximum value in the specified angle.

[0038] The embodiment of the present application controls the rotating mechanism to rotate at a constant speed from the lower limit value of the angle to the upper limit value of the angle, and then rotate at a constant speed from the upper limit value of the angle to the lower limit value of the angle, realizes dynamic collection in two rotating directions, ensures the comprehensiveness and accuracy of the temperature characteristic reference results, and thus can effectively verify the temperature characteristic measurement results obtained by static measurement.

[0039] In a second aspect, the embodiment of the present application provides a temperature characteristic measurement device for an induction synchro in a vacuum environment, wherein the induction synchro is arranged in a measurement environment with variable temperature in a vacuum, and the device comprises:

[0040] a rotating control module, configured to control a rotating mechanism of the induction synchro to rotate to each specified angle and lock, wherein the specified angle is determined according to phase information corresponding to an electrical period of a precision channel of the induction synchro;

[0041] a first temperature adjusting module, configured to change an environmental temperature of the measurement environment in a preset temperature range corresponding to each specified angle when the rotating mechanism is locked;

[0042] a static measurement module, configured to collect angle information output by the induction synchro corresponding to the environmental temperature in a static manner in a process of changing the environmental temperature, to obtain a static measurement result, and determine a temperature characteristic measurement result of the induction synchro according to the environmental temperature and the static measurement result.

[0043] The temperature characteristic measurement device provided by the embodiment of the present application determines the specified angle according to the phase information of the electrical period of the precision channel and locks the rotating mechanism, only needs to select the angle corresponding to the key position to analyze the influence of temperature change on the induction synchro, and significantly reduces the measurement workload. Moreover, the temperature of the measurement environment is measured and the corresponding angle information is collected in the locked state of the specified angle, the relationship between the temperature change corresponding to a specific angle and the angle information output by the induction synchro can be accurately obtained, and thus the temperature characteristic measurement result is obtained, which not only can accurately quantify the thermal expansion effect of the induction synchro in the vacuum variable temperature environment, but also greatly improves the measurement efficiency of the temperature characteristic, and thus is conducive to improving the accuracy of the angle measurement system, and provides key technical support for the engineering application of high-precision remote sensing equipment.

[0044] Optionally, in some embodiments of the present application, the device further comprises:

[0045] The second temperature adjusting module is configured to determine an upper limit temperature value and a lower limit temperature value of the preset temperature range after obtaining the static measurement result, adjust the ambient temperature of the measurement environment to the lower limit temperature value, and gradually adjust the ambient temperature from the lower limit temperature value to the upper limit temperature value according to a preset step size.

[0046] The dynamic measurement module is configured to control the rotating mechanism to rotate at a constant speed within a preset angle range after each adjustment, and collect dynamic angle information output by the inductive synchro corresponding to the ambient temperature during the constant-speed rotation of the rotating mechanism, to obtain a dynamic measurement result, and determine a temperature characteristic reference result of the inductive synchro according to the ambient temperature and the dynamic measurement result.

[0047] The verification module is configured to verify the temperature characteristic measurement result by using the temperature characteristic reference result, and determine that the temperature characteristic measurement result passes the verification if the temperature characteristic reference result and the temperature characteristic measurement result satisfy a preset matching condition.

[0048] The second temperature adjusting module and the dynamic measurement module are configured to collect dynamic angle information within a preset angle range at different ambient temperatures, to obtain a temperature characteristic reference result by dynamic measurement, and verify a temperature characteristic measurement result obtained by static measurement by using the verification module, so as to ensure the universality of the static measurement method, thereby effectively ensuring the reliability and accuracy of the temperature characteristic measurement result.

[0049] In a third aspect, an embodiment of the present application provides a computer device, comprising:

[0050] A memory and a processor are communicatively connected, the memory stores computer instructions, and the processor executes the computer instructions to perform the inductive synchro temperature characteristic measurement method in a vacuum environment. BRIEF DESCRIPTION OF DRAWINGS

[0051] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0052] Figure 1 It is an electrical schematic diagram of an absolute type circular inductive synchro in the related art;

[0053] Figure 2 A schematic diagram of a measurement environment of an inductive synchro in an embodiment of the present application is shown in FIG. 1.

[0054] Figure 3 A schematic diagram of a flow of a method for measuring temperature characteristics of an inductive synchro in a vacuum environment in an embodiment of the present application is shown in FIG. 2.

[0055] Figure 4 A schematic diagram of a structure of a scanning device in an embodiment of the present application is shown in FIG. 3.

[0056] Figure 5 A schematic diagram of a temperature measurement point distribution of an inductive synchro in an embodiment of the present application is shown in FIG. 4.

[0057] Figure 6 A curve of an environmental temperature change corresponding to each temperature measurement point in an embodiment of the present application is shown in FIG. 5.

[0058] Figure 7 A fitting curve of an initial temperature change of a coarse channel in an embodiment of the present application is shown in FIG. 6.

[0059] Figure 8 A fitting curve of an initial temperature change of a fine channel in an embodiment of the present application is shown in FIG. 7.

[0060] Figure 9 A curve of an average temperature change characteristic of the coarse channel and the fine channel in an embodiment of the present application is shown in FIG. 8.

[0061] Figure 10 A schematic diagram of a reference result of a temperature characteristic corresponding to dynamic measurement in an embodiment of the present application is shown in FIG. 9.

[0062] Figure 11 A schematic diagram of a structure of a temperature characteristic measurement device of an inductive synchro in a vacuum environment in an embodiment of the present application is shown in FIG. 10. DETAILED DESCRIPTION

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0064] In the field of aerospace, the remote sensing observation system of a high-orbit satellite needs a high-precision scanning control angle measurement system to achieve fine detection of the earth's surface. The inductive synchro is a common choice for the angle measurement system in this application scenario because of its non-contact measurement and anti-electromagnetic interference characteristics.

[0065] An absolute circular inductive synchro (CIS) is a type of inductive synchro consisting of a stator and a rotor. It converts angular changes into electrical signal changes through electromagnetic coupling between the stator and rotor windings. Figure 1 The electrical principles of the stator and rotor of an absolute circular induction synchro are shown, such as... Figure 1 As shown, the stator includes sinusoidal winding terminals S1 and S2, cosine winding terminals C1 and C2, and the rotor includes continuous winding terminals Z1 and Z2. When an AC excitation signal is applied to the continuous windings of the rotor, a multi-pole alternating magnetic field is generated near the rotor plane, the number of which depends on the number of conductor plates.

[0066] Assume the AC excitation signal of the sinusoidal winding As shown in the following formula (1):

[0067] Formula (1)

[0068] Assume the AC excitation signal of the cosine winding As shown in the following formula (2):

[0069] Formula (2)

[0070] In formulas (1) and (2), Indicates the amplitude of the AC excitation signal. This represents the angular frequency of the AC excitation signal. Indicates time.

[0071] Let the rotation angle of the rotor relative to the stator be θ, and the number of pole pairs of the rotor and stator windings be n, according to the characteristics of the induction synchro. Then the induced electromotive force on the stator is... The expression for is shown in the following formula (3):

[0072] Formula (3)

[0073] In the formula, is the coupling coefficient.

[0074] Therefore, the phase of the induced electromotive force (EMF) on the stator is linearly related to the rotor's rotation angle θ relative to the stator. By detecting the phase of the induced EMF, the rotor's rotation angle θ relative to the stator can be measured. For example, given the number of pole pairs n and the coupling coefficient... By measuring the induced electromotive force By determining the phase, the rotation angle θ can be calculated.

[0075] In addition, the 360-pole absolute resolver includes a coarse channel and a fine channel, wherein the coarse channel is an Archimedes helix continuous winding on the rotor and a helix segmented winding on the stator, which is composed of staggered cosine and sine windings, and presents a sine signal and a cosine signal in 360 degrees to form an absolute coordinate. The winding distribution of the rotor and the stator of the fine channel is different, wherein the rotor is a continuous winding, the number of conductors is the number of poles of the resolver, and the included angle between the center lines (or side lines) of two adjacent conductors is called the pole pitch, while the stator is a segmented winding, also known as a sine-cosine winding. The 360-degree electrical period of the coarse channel serves as a complete measurement unit, while the fine channel is composed of 360 identical electrical periods, each of which corresponds to a 1-degree measurement range. The angle measurement principle is to locate the corresponding electrical period of the fine channel through the coarse channel range, and then to obtain high-resolution angle information through the fine channel after obtaining the initial value of the wide-range angle through the coarse measurement.

[0076] With the increase of the number of pole pairs, the resolution of the resolver is significantly improved, and the resolution of the 360-pole resolver can reach the order of 0.054 arc seconds. However, the higher the resolution is, the greater the influence of the environmental temperature change on the angle measurement performance of the resolver is. Especially when the resolver is applied to a vacuum environment such as a spacecraft, the thermal cycle phenomenon caused by the periodic solar radiation and the earth occultation phenomenon in the geostationary orbit (GEO) thermal environment. Due to the mismatch of the coefficient of thermal expansion (CTE) of the material, this extreme environment will cause thermal expansion of the device material, and alternating thermal stress will be generated in the resolver material, which will further cause the radial and axial deformation of the resolver in the vacuum rapid temperature changing environment. The deformation caused by the thermal expansion changes the electromagnetic coupling gap between the stator and the rotor, so that the angle information output by the absolute resolver has an error with the actual angle, and finally causes the geometric distortion of the satellite remote sensing image or the distortion of the scientific exploration data.

[0077] In the related art, the temperature characteristics of the resolver under normal temperature ground conditions are mostly studied, and therefore, how to accurately obtain the thermal expansion characteristics of the resolver in the vacuum environment becomes a problem to be solved.

[0078] According to the embodiments of the present application, a resolver temperature characteristic measurement method in a vacuum environment is provided. It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0079] A temperature characteristic measurement method of an induction synchronizer in a vacuum environment is provided in the embodiment, which can be used in a remote sensing observation system of a high orbit satellite. The induction synchronizer is arranged in a measurement environment with vacuum and variable temperature. Figure 2 As shown in the figure, the embodiment of the application is provided with a vacuum tank 50, a pre-amplification device 30, a ground detection device 10, a scanning control device 20 and a scanning device 40.

[0080] Specifically, the ground detection device 10 can be a computer device, which is used to execute the temperature characteristic measurement method proposed in the embodiment of the application.

[0081] The scanning control device 20 receives a control instruction of the ground detection device 10, and sends a motion control signal to the scanning device 40 in response to the control instruction.

[0082] The scanning device 40 is used to drive a rotating mechanism of the induction synchronizer to rotate, and collect angle information output by the induction synchronizer. The scanning device 40 is provided with a locking mechanism 410. Specifically, the scanning device 40 drives the rotating mechanism to rotate to a specified angle and lock at the angle, or drives the rotating mechanism to rotate at a constant speed within a certain angle range in response to the motion control signal. The pre-amplification device 30 is connected with the scanning device 40 and the scanning control device 20 through ports. The motion control signal is sent to the pre-amplification device 30, and is sent to the scanning device 40 after being processed by the pre-amplification device 30. The angle information collected by the scanning device 40 is sent to the pre-amplification device 30, and is sent to the scanning control device 20 after being processed by the pre-amplification device 30.

[0083] The vacuum tank 50 is used to provide a measurement environment with vacuum and variable temperature. The scanning device 40 and the induction synchronizer are arranged inside the vacuum tank 50. The tank wall of the vacuum tank 50 is in good conduction with the ground.

[0084] Before starting the temperature characteristic measurement method proposed in the embodiment of the application, cables between the devices inside and outside the case tank are connected, and power-on detection before closing the tank is performed. After the detection is completed, the vacuum tank is closed, and vacuumization of the vacuum tank is started. At this time, the devices inside the vacuum tank are powered off. After the vacuum degree inside the vacuum tank reaches 1.0×10 -3 Pa, power-on is performed and the following temperature characteristic measurement method is started.

[0085] Figure 3 A flowchart of the temperature characteristic measurement method of the induction synchronizer in the vacuum environment according to the embodiment of the application is shown in the figure. The flowchart includes the following steps: Figure 3

[0086] ​Step S1, rotating a rotating mechanism of an induction synchro to a plurality of specified angles and locking, wherein the induction synchro has a fine channel electrical period, and the specified angles are determined according to phase information corresponding to the fine channel electrical period.

[0087] Specifically, the embodiment of the application drives the rotating mechanism of the induction synchro to rotate to each specified angle by the scanning mechanism, that is, the rotor of the induction synchro. The subsequent measurement is performed respectively when the rotating mechanism is locked at each specified angle.

[0088] In addition, the fine channel electrical period refers to a phase change period experienced by the fine channel output of the induction synchro to complete a complete periodic change. By corresponding to a phase change of 2π, the embodiment of the application selects a plurality of key phases between 0 and 2π, and takes the mechanical angles corresponding to the key phases as the specified angles.

[0089] Step S3, adjusting the ambient temperature of the measurement environment to change between a preset temperature range when the rotating mechanism is locked at each specified angle, and collecting the angle information output by the induction synchro statically during the change of the ambient temperature to obtain a static measurement result corresponding to each specified angle.

[0090] Specifically, when the rotating mechanism is locked at a specified angle, the angle position remains fixed and unchanged, and the ambient temperature of the measurement environment is adjusted to change between a preset temperature range while each specified angle is fixed. As can be seen, the static collection is to collect the angle information output by the induction synchro during the change of the ambient temperature while the specified angle remains unchanged. Through static collection, a corresponding static measurement result is obtained for each specified angle, which can reflect the change of the angle information output by the induction synchro with the ambient temperature at the specified angle.

[0091] Step S5, determining a temperature characteristic measurement result of the induction synchro according to the ambient temperature and the static measurement result corresponding to each of the plurality of specified angles.

[0092] Specifically, for a plurality of specified angles, the static measurement result corresponding to each of the plurality of specified angles is associated with the change of the ambient temperature, that is, the corresponding relationship between different ambient temperatures and the angle information output by the induction synchro at each specified angle is established, and then the output characteristic performance of the induction synchro under different temperature conditions is determined, so as to realize the accurate quantification of the thermal expansion effect of the induction synchro in the vacuum variable temperature environment.

[0093] The temperature characteristic measurement method provided in the embodiments of the present application determines the specified angle according to the electrical cycle phase information of the precision channel and locks the rotating mechanism, only needs to select the angle corresponding to the key position to analyze the influence of temperature change on the induction synchronizer, and significantly reduces the measurement workload. Moreover, the temperature of the environment is measured and the corresponding angle information is statically collected in the locked state of the specified angle, the relationship between the temperature change corresponding to the specific angle and the output angle information of the induction synchronizer can be accurately obtained, and thus the temperature characteristic measurement result is obtained. Not only can the thermal expansion effect of the induction synchronizer in the vacuum variable temperature environment be accurately quantified, but also the measurement efficiency of the temperature characteristic is greatly improved, and thus the accuracy of the angle measurement system is improved, and key technical support is provided for the engineering application of high-precision remote sensing equipment.

[0094] Further, in some embodiments of the present application, the specified angle is determined by the following method, comprising:

[0095] determining the electrical cycle corresponding to the precision channel of the induction synchronizer;

[0096] determining the specified angle according to the mechanical angle corresponding to the specified cosine phase in the electrical cycle, wherein the specified cosine phase comprises at least one of 0, π / 4, π / 2 and 3π / 4.

[0097] Specifically, in some embodiments of the present application, four key phases of the cosine phase in a half electrical cycle are selected, which are 0, π / 4, π / 2 and 3π / 4, and the mechanical angles corresponding to the above four key phases are determined as 0 degrees, 7.5 angular minutes, 15 angular minutes and 22.5 angular minutes, i.e. the specified angle is 0 degrees, 7.5 angular minutes, 15 angular minutes and 22.5 angular minutes. These key phases are uniformly distributed in a half electrical cycle, which can comprehensively cover the change process of the cosine signal from 0 phase to peak value and then from peak value to 0 phase, and then the characteristic performance of a half electrical cycle is mapped to the characteristic performance of the entire electrical cycle, which not only reduces the number of measured angles, but also ensures the comprehensiveness and accuracy of temperature characteristic analysis.

[0098] The embodiments of the present application select the key positions in the half electrical cycle of the precision channel of the induction synchronizer as the above specified cosine phase, and the selected specified cosine phase can cover the maximum value and the maximum slope of the cosine induction electromotive force output by the precision channel of the induction synchronizer, thereby ensuring comprehensive measurement of the induction synchronizer under different working conditions, and thereby facilitating effective and accurate analysis of the temperature characteristics of the induction synchronizer.

[0099] In some embodiments of the present application, the above step S3 can comprise the following steps:

[0100] Step S31, determining the upper limit temperature value and the lower limit temperature value of the preset temperature interval, and adjusting the environment temperature to the upper limit temperature value.

[0101] Specifically, in the application scenario of high-orbit satellites, the actual working temperature is 5-45°C, and the application embodiment sets a certain redundancy space, sets the above-mentioned preset temperature interval to 0-50°C to cope with the abnormal temperature fluctuation working condition of the induction synchronizer. Therefore, the above-mentioned lower limit temperature value is 0°C, and the upper limit temperature value is 50°C.

[0102] In an example of the application embodiment, the initial temperature of the vacuum tank is 25°C, so at this time, the environmental temperature inside the vacuum tank is raised to 50°C.

[0103] Step S33, gradually adjust the environmental temperature from the upper limit temperature value to the lower limit temperature value according to a preset step size, and then gradually adjust the environmental temperature from the lower limit temperature value to the upper limit temperature value according to the preset step size.

[0104] Specifically, in an example of the application embodiment, the preset step size is 5°C,

[0105] Next, take the above-mentioned 0 degrees, 7.5 arc minutes, 15 arc minutes and 22.5 arc minutes as specified angles as an example, and describe in detail the execution process of step S3 in some embodiments of the application:

[0106] First, the scanning device drives the rotor of the induction synchronizer to point to 0 degrees of the fine channel electrical period and then locks, at this time, the environmental temperature in the vacuum tank is raised from 25°C to 50°C, and then lowered from 50°C to 0°C with a preset step size of 5°C, and then raised from 0°C to 50°C with a preset step size of 5°C, while the angle information output by the induction synchronizer is statically collected during the change of the environmental temperature from 50°C to 0°C and then from 0°C to 50°C.

[0107] Subsequently, the scanning device is unlocked, and the rotor of the induction synchronizer is driven to point to 7.5 arc minutes of the fine channel electrical period and then locked again, at this time, the environmental temperature in the vacuum tank is lowered from 50°C to 0°C with a preset step size of 5°C, and then raised from 0°C to 50°C with a preset step size of 5°C, while the angle information output by the induction synchronizer is statically collected during the change of the environmental temperature from 50°C to 0°C and then from 0°C to 50°C.

[0108] The scanning device is unlocked again, and the rotor of the induction synchronizer is driven to point to 15 arc minutes of the fine channel electrical period and then locked again, at this time, the environmental temperature in the vacuum tank is lowered from 50°C to 0°C with a preset step size of 5°C, and then raised from 0°C to 50°C with a preset step size of 5°C, while the angle information output by the induction synchronizer is statically collected during the change of the environmental temperature from 50°C to 0°C and then from 0°C to 50°C.

[0109] The scanning device is unlocked again, and the rotor of the induction synchronizer is driven to point to 22.5 angular degrees of the electrical period of the fine channel, and is locked again, at this time, the ambient temperature in the vacuum tank is decreased from 50 DEG C to 0 DEG C at a preset step of 5 DEG C, and is increased from 0 DEG C to 50 DEG C at a preset step of 5 DEG C, and meanwhile, the angle information output by the induction synchronizer is collected statically during the process of decreasing from 50 DEG C to 0 DEG C and increasing from 0 DEG C to 50 DEG C.

[0110] Finally, the scanning device is unlocked, and the rotor of the induction synchronizer is driven to point to 0 degrees of the electrical period of the fine channel, so as to restore to the original state.

[0111] wherein, Figure 4 The setting position of the locking mechanism 410 in the scanning device is shown, and in some embodiments of the present application, the locking of the rotor is realized through the locking mechanism 410.

[0112] Therefore, the preset temperature interval with redundancy space is set relative to the actual working temperature of the induction synchronizer, so as to facilitate the adaptability and reliability of the static measurement result to the actual complex working condition. In addition, the preset step is used to gradually adjust from the upper limit temperature value to the lower limit temperature value, and then reversely adjust from the lower limit temperature value to the upper limit temperature value, so that the static collection process is more complete and comprehensive, and the accuracy and comprehensiveness of the subsequent static measurement result are greatly improved.

[0113] In some embodiments of the present application, the induction synchronizer includes a fine channel and a coarse channel, and the static measurement result includes a fine channel static collection result and a coarse channel static collection result. Further, the step S3 can further include the following steps.

[0114] In step S35, the angle information output by the fine channel is collected based on a preset sampling frequency, and a fine channel static collection result is obtained.

[0115] In step S37, the angle information output by the coarse channel is synchronously collected based on a preset sampling frequency at the same time of collecting the fine channel, and a coarse channel static collection result is obtained.

[0116] Specifically, the embodiment of the present application adopts a RDC19220 model tracking resolver to collect angle information, which can convert the induced electromotive force output by the inductive synchronizer into a digital angle signal. The working resolution of the coarse channel and the fine channel is 16 bits, and the bandwidth is 280 Hz. In addition, the output data bit width of the tracking resolver is 41 bits, and the data composition is as follows: the high 9 bits represent the target angle value, which is an integer degree value obtained by fusing the coarse channel static acquisition result and the fine channel static acquisition result; the middle 16 bits correspond to the fine channel static acquisition result; and the low 16 bits correspond to the coarse channel static acquisition result.

[0117] In some embodiments of the present application, the digital output range of the coarse channel static acquisition result and the fine channel static acquisition result is 0-65535, and the quantization unit is "code word". Under the current resolution condition: when the coarse channel covers the full range of 360°, the total code value is 65536 code words, and it is converted to know that 1° mechanical angle interval corresponds to 182 code words. The total code value of the fine channel in the 1° range is 65536 code words, and the mechanical angle interval represented by a single code word is 0.055 arc seconds.

[0118] Further, the embodiment of the present application synchronously collects the angle information output by the fine channel and the coarse channel at a preset sampling frequency of 64 kHz to obtain the fine channel static acquisition result Fij and the coarse channel static acquisition result Cij, wherein i represents the acquisition time, and j represents the current time digital quantity.

[0119] It can be seen that, in some embodiments of the present application, the above-mentioned static measurement results include the fine channel static acquisition result Fij and the coarse channel static acquisition result Cij, and in some embodiments of the present application, the temperature characteristic measurement result in step S7 is analyzed for the fine channel static acquisition result Fij and the coarse channel static acquisition result Cij respectively.

[0120] In some embodiments of the present application, a plurality of temperature measurement points are arranged on the inductive synchronizer. Specifically, as shown in Figure 5 The temperature measurement points include a first temperature measurement point 510 arranged on the upper side of the inductive synchronizer, a second temperature measurement point 520 arranged on the lower side of the inductive synchronizer, a third temperature measurement point 530 arranged on the left side of the inductive synchronizer mounting bracket, and a fourth temperature measurement point 540 arranged on the right side of the inductive synchronizer mounting bracket.

[0121] Specifically, in some examples of the embodiment of the present application, a platinum thermal resistor is pasted at the positions corresponding to the above-mentioned temperature measurement points by using a high-temperature adhesive tape, so as to realize the collection of the ambient temperature by the platinum thermal resistor. Wherein, Figure 6 The change curve of the ambient temperature measured by the above-mentioned four temperature measurement points in the whole static acquisition process is shown.

[0122] It should be noted that,Figure 5 The above four temperature measurement points are merely an example of an embodiment of this application and are not intended to limit this application. In other examples of embodiments of this application, the location and number of temperature measurement points can be flexibly adjusted according to actual measurement needs.

[0123] In some embodiments of this application, step S5 may include the following steps:

[0124] Step S51: Obtain the ambient temperature corresponding to each temperature measurement point and the static measurement results corresponding to multiple specified angles, and normalize the ambient temperature and static measurement results respectively to obtain normalized temperature data and normalized static measurement data.

[0125] Specifically, in some embodiments of this application, the differences in data dimensions are eliminated by normalizing the ambient temperature and static measurement results. It should be noted that, since the static measurement results include coarse-channel static acquisition results and fine-channel static acquisition results, the normalized static measurement data will also correspond to normalized coarse-channel static acquisition results and normalized fine-channel static acquisition results.

[0126] Step S53: Fit the normalized temperature data and normalized static measurement data corresponding to each temperature measurement point to obtain the initial heating fitting curve and the initial cooling fitting curve corresponding to each temperature measurement point.

[0127] Specifically, in some embodiments of this application, respectively... Figure 5 Fitting is performed on the first to fourth temperature measurement points shown. For example, the initial heating fitting curve is obtained by fitting the normalized temperature data from the 0℃ to 50℃ stage corresponding to the first temperature measurement point and the normalized coarse channel static acquisition results, representing the relationship between the angle information output by the coarse channel of the inductive synchro at a specified angle and the heating stage of the first temperature measurement point. Similarly, the initial cooling fitting curve is obtained by fitting the normalized temperature data from the 50℃ to 0℃ stage corresponding to the first temperature measurement point and the normalized coarse channel static acquisition results, representing the relationship between the angle information output by the coarse channel of the inductive synchro at a specified angle and the cooling stage of the first temperature measurement point. The fitting process for other temperature measurement points is similar and will not be elaborated here.

[0128] in, Figure 7 The initial heating and cooling fitting curves of the coarse channel are shown at four specified angles: 0 degrees, 7.5 minutes, 15 minutes, and 22.5 minutes.

[0129] Similarly, the fitting process between normalized temperature data and normalized fine-channel static acquisition results is the same and will not be elaborated here. Figure 8The initial temperature rising fitting curves and the initial temperature falling fitting curves of the fine channels at the four specified angles of 0 degrees, 7.5 angular minutes, 15 angular minutes and 22.5 angular minutes are shown respectively.

[0130] It can be seen from Figure 7 and Figure 8 that the digital quantity of the normalized static measurement data measured in some embodiments of the present application is negatively correlated with the normalized temperature data.

[0131] In step S55, discrete mean calculation is performed on the initial temperature rising fitting curves of each temperature measurement point to obtain a target temperature rising fitting curve corresponding to each of the specified angles, and discrete mean calculation is performed on the initial temperature falling fitting curves of each temperature measurement point to obtain a target temperature falling fitting curve corresponding to each of the specified angles.

[0132] Specifically, for each specified angle, the initial temperature rising fitting curves are discretely sampled at intervals of 10 degrees Celsius to reduce the data processing amount, and the sampling data of the initial temperature rising fitting curves are fused to form a new target temperature rising fitting curve. Similarly, the initial temperature falling fitting curves are discretely sampled at intervals of 10 degrees Celsius, and the sampling data of the initial temperature falling fitting curves are fused to form a new target temperature falling fitting curve.

[0133] In step S57, mean calculation is performed on the target temperature rising fitting curves and the target temperature falling fitting curves to obtain an average temperature change characteristic curve corresponding to each of the specified angles, and the temperature characteristic measurement result is determined using the average temperature change characteristic curve.

[0134] Specifically, for each specified angle, the target temperature rising fitting curve and the target temperature falling fitting curve corresponding to the specified angle are subjected to mean calculation at the same temperature point, that is, the fitting values of the two curves at the same temperature are subjected to arithmetic averaging to obtain an average temperature change characteristic curve corresponding to the specified angle. The average temperature change characteristic curve represents the temperature characteristic measurement result, and the temperature characteristic measurement result can be quantified using the fitting of the average temperature change characteristic curve.

[0135] Figure 9 The average temperature change characteristic curves corresponding to the coarse channel and the fine channel are shown in (a) and (b) in Figure 9 It can be seen from (a) and (b) that in some embodiments of the present application, the average temperature change characteristic curve represents that the temperature characteristic measurement result is negatively correlated with the digital quantity corresponding to the angle information output by the inductive synchronizer, and the change slope of the negative correlation is different for the two stages of temperature rising and temperature falling.

[0136] Therefore, the embodiment of the present application can comprehensively obtain temperature information at different positions by setting multiple temperature measurement points on the inductive synchronizer, improve the data processing accuracy by combining with the normalization processing, and then fit the data of each temperature measurement point to obtain the initial temperature rise fitting curve and the initial temperature drop fitting curve. The initial temperature rise fitting curve and the initial temperature drop fitting curve are fused to reduce the influence of random errors, so as to comprehensively improve the accuracy of the temperature characteristic measurement result by using the average temperature variation characteristic curve.

[0137] In some embodiments of the present application, after the above step S5, the above method further includes step S7, which can include the following steps:

[0138] Step S71, adjusting the environmental temperature of the measurement environment to a lower limit temperature value, and gradually adjusting the environmental temperature from the lower limit temperature value to an upper limit temperature value according to a preset step size;

[0139] Step S73, after each adjustment, controlling the rotating mechanism to rotate at a uniform speed within a preset angle range, and dynamically collecting the actual angle of the rotating mechanism and the angle information output by the inductive synchronizer corresponding to the environmental temperature during the uniform rotation to obtain a dynamic measurement result;

[0140] Step S75, determining the temperature characteristic reference result of the inductive synchronizer according to the actual angle, the dynamic measurement result, and the corresponding environmental temperature;

[0141] Step S77, verifying the temperature characteristic measurement result by using the temperature characteristic reference result, and if the temperature characteristic reference result and the temperature characteristic measurement result satisfy a preset matching condition, determining that the temperature characteristic measurement result passes the verification.

[0142] Specifically, since the above steps S1 to S5 are based on the selected specified angle to perform static temperature characteristic measurement, in order to verify the accuracy and universality of the above temperature characteristic measurement result in the full angle domain, the embodiment of the present application performs dynamic temperature characteristic measurement through the above steps S71 to S73, and verifies the temperature characteristic measurement result by using the measured temperature characteristic reference result through steps S75 and S77.

[0143] Further, the above step S73 can further include the following steps:

[0144] Step S731, determining an angle lower limit value and an angle upper limit value of the preset angle range.

[0145] Step S733, controlling the rotating mechanism to rotate at a uniform speed from the angle lower limit value to the angle upper limit value, and then rotate at a uniform speed from the angle upper limit value to the angle lower limit value. The angle lower limit value is less than the minimum value in the specified angle, and the angle upper limit value is greater than the maximum value in the specified angle.

[0146] Specifically, in the embodiments of the present application, the preset angle range is set to 0-100 degrees.

[0147] The execution process of step S7 in some embodiments of the present application is described in detail below by taking 0 degrees, 7.5 minutes, 15 minutes and 22.5 minutes as the specified angles.

[0148] After step S5 is completed, the scanning mechanism keeps the state of releasing the lock of the rotating structure, and decreases the environmental temperature in the vacuum tank from 50 degrees to 0 degrees and then increases the environmental temperature from 0 degrees to 50 degrees at a preset step of 5 degrees. After each change of the environmental temperature, the scanning mechanism drives the rotating structure to rotate uniformly from 0 degrees to 100 degrees and then rotate uniformly from 100 degrees to 0 degrees to complete one uniform scanning, and the dynamic measurement result is obtained in each scanning process. After each scanning is completed, the environmental temperature is adjusted for the next change.

[0149] Similarly, the dynamic measurement result includes the coarse channel dynamic acquisition result and the fine channel dynamic acquisition result. Taking the coarse channel dynamic acquisition result as an example, after the environmental temperature is decreased from 50 degrees to 45 degrees, the actual angle at the environmental temperature of 45 degrees is fitted with the coarse channel dynamic acquisition result. After the fitting is completed, the environmental temperature is adjusted to decrease from 45 degrees to 40 degrees, and the fitting is performed in a cycle. Finally, the temperature characteristic reference result is obtained as shown in FIG. 6, wherein the sampling amount of the abscissa represents the actual angle of the inductive synchro rotor. It can be seen from FIG. 6 that the angle information output by the inductive synchro at the same actual angle decreases with the increase of the environmental temperature, that is, the angle information is negatively correlated with the environmental temperature, and the monotonicity is the same as that of the temperature characteristic measurement result obtained based on the static measurement. Therefore, it can be verified that the temperature characteristic reference result matches the temperature characteristic measurement result, and it is proved that the temperature characteristic measurement result obtained based on the static measurement has universality. Figure 10 Figure 10 It can be seen from FIG. 6 that the angle information output by the inductive synchro at the same actual angle decreases with the increase of the environmental temperature, that is, the angle information is negatively correlated with the environmental temperature, and the monotonicity is the same as that of the temperature characteristic measurement result obtained based on the static measurement. Therefore, it can be verified that the temperature characteristic reference result matches the temperature characteristic measurement result, and it is proved that the temperature characteristic measurement result obtained based on the static measurement has universality.

[0150] Therefore, the embodiments of the present application perform dynamic acquisition of the angle information in the preset angle range at different environmental temperatures, verify the temperature characteristic measurement result obtained based on the static measurement by using the temperature characteristic reference result obtained based on the dynamic measurement, ensure the universality of the static measurement method, and effectively guarantee the reliability and accuracy of the temperature characteristic measurement result.

[0151] The embodiments of the present application realize dynamic acquisition in the positive and negative rotation directions by controlling the rotating mechanism to rotate uniformly from the lower angle limit value to the upper angle limit value and then rotate uniformly from the upper angle limit value to the lower angle limit value, thereby ensuring the comprehensiveness and accuracy of the temperature characteristic reference result, and effectively verifying the temperature characteristic measurement result obtained based on the static measurement.

[0152] Correspondingly, please refer to Figure 11 ​The embodiment of the present application provides a kind of temperature characteristic measuring device of inductive synchronizer under vacuum environment, similarly, inductive synchronizer is arranged in the measurement environment of variable temperature in vacuum, and the device comprises:

[0153] Rotary control module 100 is used to control the rotation mechanism of inductive synchronizer to rotate to each specified angle and lock respectively, wherein the specified angle is determined according to the phase information corresponding to the electrical period of the precision channel of inductive synchronizer, and the detailed content is referred to step S1;

[0154] The first temperature adjusting module 200 is used to change the environmental temperature of the measurement environment between the preset temperature interval respectively corresponding to each specified angle under the condition that the rotation mechanism is locked, and the detailed content is referred to step S3;

[0155] Static measurement module 300 is used to collect the angle information output by inductive synchronizer corresponding to environmental temperature statically in the process of environmental temperature change, to obtain static measurement result, and determine the temperature characteristic measurement result of inductive synchronizer according to environmental temperature and static measurement result, and the detailed content is referred to step S5.

[0156] The further function description of the above each module and unit is the same as the above corresponding embodiment, and will not be repeated here.

[0157] The temperature characteristic measuring device in the embodiment is presented in the form of functional unit, and the unit here refers to ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit) circuit, processor and memory executing one or more software or fixed program, and / or other devices that can provide the above functions.

[0158] The computer device provided in the embodiments of the present application includes one or more processors, a memory, and an interface for connecting various components, including a high-speed interface and a low-speed interface. The various components are communicatively connected by different buses, and can be installed on a common motherboard or other mounting means as needed. The processor can process instructions executed in the computer device, including instructions stored in the memory or on the memory to display a GUI on an external input / output device, such as a display device coupled to the interface. In some optional embodiments, multiple processors and / or buses can be used with multiple memories and multiple memory as needed. Similarly, multiple computer devices can be connected, each providing part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). The processor can be a central processor, a network processor, or a combination thereof. The processor can further include a hardware chip. The hardware chip can be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device can be a complex programmable logic device, a field programmable logic gate array, a generic array logic, or any combination thereof.

[0159] The memory stores instructions executable by the at least one processor to cause the at least one processor to perform the method implemented by the above-mentioned embodiments.

[0160] The memory can include a program storage area and a data storage area. The program storage area can store an operating system and application programs required by at least one function; the data storage area can store data created according to the use of the computer device, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some optional embodiments, the memory can optionally include a memory remotely disposed relative to the processor, which can be connected to the computer device through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0161] The memory can include a volatile memory, such as a random access memory; the memory can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid-state disk; the memory can also include a combination of the above types of memories.

[0162] The computer device further includes a communication interface for communication between the computer device and other devices or communication networks.

[0163] The embodiments of the present application further provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or stored in a remote storage medium or a non-transitory machine readable storage medium and downloaded to a local storage medium through network and stored in the local storage medium, so that the method described herein can be processed by such software on a storage medium using a general purpose computer, a special purpose processor, or programmable or special hardware. The storage medium can be a disk, a compact disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid state disk, etc. Further, the storage medium can also include a combination of the above-mentioned memories. It can be understood that the computer, the processor, the microprocessor controller, or the programmable hardware includes a storage component that can store or receive software or computer code, when the software or computer code is accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0164] The embodiments of the present application provide a computer program product, which includes computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method of any of the embodiments of the present application.

[0165] Although the embodiments of the present application are described with reference to the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

[0166] For the convenience of description, the above device is described as various units divided by functions and described respectively. Of course, the functions of each unit can be implemented in the same or more software and / or hardware when implementing the present application.

[0167] The present application is described with reference to flowcharts and / or block diagrams according to the methods, devices (systems), and computer program products of the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device that implements the functions specified in the flowcharts and / or block diagrams. Figure 1 The device that implements the functions specified in one flow or multiple flows and / or blocks Figure 1 The device that implements the functions specified in one flow or multiple flows and / or blocks

[0168] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the Figure 1 function specified in the flow or flows and / or blocks Figure 1 of the block or blocks.

[0169] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the Figure 1 function specified in the flow or flows and / or blocks Figure 1 of the block or blocks.

[0170] It is also noted that the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0171] Each of the embodiments in the present specification is described in a progressive manner, and the same or similar parts between each embodiment can be mutually referred to, and each embodiment focuses on the difference from other embodiments. In particular, for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

[0172] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

[0173] Although the embodiments of the present application are described in conjunction with the accompanying drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes shall fall within the scope defined by the appended claims.

Claims

1. A method for measuring the temperature characteristics of an inductive synchro in a vacuum environment, characterized in that, The inductive synchro is positioned in a vacuum and temperature-variable measurement environment, and the method includes: The rotating mechanism of the inductive synchronizer is controlled to rotate to multiple specified angles and locked, wherein the inductive synchronizer has a fine channel electrical cycle, and the specified angles are determined based on the phase information corresponding to the fine channel electrical cycle; With the rotation mechanism locked at each specified angle, the ambient temperature of the measurement environment is adjusted to vary within a preset temperature range. During the process of the ambient temperature change, the angle information output by the induction synchronizer is statically acquired to obtain the static measurement result corresponding to each specified angle. The temperature characteristic measurement result of the inductive synchro is determined based on the ambient temperature and the static measurement results corresponding to the multiple specified angles. The specified angle is determined by the following methods: Determine the electrical cycle corresponding to the fine channel of the inductive synchronizer; The specified angle is determined based on the mechanical angle corresponding to the specified sine and cosine phases within the electrical cycle, wherein the specified sine and cosine phases include at least one of 0, π / 4, π / 2, and 3π / 4; The inductive synchro is provided with multiple temperature measuring points. Determining the temperature characteristic measurement results of the inductive synchro based on the ambient temperature and the static measurement results corresponding to the multiple specified angles includes: The ambient temperature corresponding to each of the temperature measurement points and the static measurement results corresponding to each of the multiple specified angles are obtained. The average temperature variation characteristic curves corresponding to each of the multiple specified angles are obtained based on the ambient temperature and the static measurement results. The temperature characteristic measurement results are determined using the average temperature variation characteristic curves.

2. The method according to claim 1, characterized in that, Adjusting the ambient temperature of the measurement environment within a preset temperature range includes: Determine the upper and lower temperature limits of the preset temperature range, and adjust the ambient temperature to the upper temperature limit. The ambient temperature is gradually adjusted from the upper limit temperature value to the lower limit temperature value according to a preset step size, and then the ambient temperature is gradually adjusted from the lower limit temperature value to the upper limit temperature value according to a preset step size.

3. The method according to claim 1, characterized in that, The inductive synchronizer includes a fine channel and a coarse channel, and the static measurement results include static acquisition results of the fine channel and static acquisition results of the coarse channel; The static acquisition of the angle information output by the inductive synchronizer to obtain the static measurement result corresponding to each specified angle includes: The angle information output by the fine channel is collected based on a preset sampling frequency to obtain the static acquisition result of the fine channel; While acquiring data from the fine channel, the angle information output from the coarse channel is simultaneously acquired based on the preset sampling frequency to obtain the static acquisition result of the coarse channel.

4. The method according to claim 1, characterized in that, The step of obtaining the average temperature variation characteristic curves corresponding to each of the multiple specified angles based on the ambient temperature and the static measurement results, and determining the temperature characteristic measurement results using the average temperature variation characteristic curves, includes: The ambient temperature and the static measurement results are normalized to obtain normalized temperature data and normalized static measurement data, respectively. The normalized temperature data and the normalized static measurement data corresponding to each temperature measurement point are fitted to obtain the initial heating fitting curve and the initial cooling fitting curve corresponding to each temperature measurement point. Discrete mean calculation is performed on the initial heating fitting curves of each of the temperature measuring points to obtain the target heating fitting curves corresponding to each of the multiple specified angles; and discrete mean calculation is performed on the initial cooling fitting curves of each of the temperature measuring points to obtain the target cooling fitting curves corresponding to each of the multiple specified angles. The average value of the target heating fitting curve and the target cooling fitting curve is calculated to obtain the average temperature change characteristic curve corresponding to each of the multiple specified angles, and the temperature characteristic measurement result is determined by the average temperature change characteristic curve.

5. The method according to claim 2, characterized in that, After determining the temperature characteristic measurement result of the inductive synchro based on the ambient temperature and the static measurement result, the method further includes: Adjust the ambient temperature of the measurement environment to the lower limit temperature value, and gradually adjust the ambient temperature from the lower limit temperature value to the upper limit temperature value according to the preset step size; After each adjustment, the rotating mechanism is controlled to rotate at a constant speed within a preset angle range. During the constant speed rotation, the actual angle of the rotating mechanism and the angle information output by the sensor synchro corresponding to the ambient temperature are dynamically collected to obtain dynamic measurement results. The temperature characteristic reference result of the inductive synchronizer is determined based on the actual angle, the dynamic measurement result, and the corresponding ambient temperature. The temperature characteristic measurement result is verified using the temperature characteristic reference result. If the temperature characteristic reference result and the temperature characteristic measurement result meet the preset matching conditions, then the temperature characteristic measurement result is determined to have passed the verification.

6. The method according to claim 5, characterized in that, The control of the rotating mechanism to rotate at a constant speed within a preset angle range includes: Determine the lower limit and upper limit of the preset angle range; The rotating mechanism is controlled to rotate at a constant speed from the lower angle limit to the upper angle limit, and then rotate at a constant speed from the upper angle limit back to the lower angle limit. Wherein, the lower limit of the angle is less than the minimum value among the specified angles, and the upper limit of the angle is greater than the maximum value among the specified angles.

7. A device for measuring the temperature characteristics of an inductive synchro in a vacuum environment, characterized in that, The inductive synchro is positioned in a vacuum and temperature-variable measurement environment, and the device includes: A rotation control module is used to control the rotation mechanism of the inductive synchronizer to rotate to various specified angles and lock them, wherein the specified angles are determined according to the phase information corresponding to the electrical cycle of the fine channel of the inductive synchronizer. The first temperature control module is used to adjust the ambient temperature of the measurement environment within a preset temperature range for each specified angle when the rotation mechanism is locked. A static measurement module is used to statically acquire the angle information output by the inductive synchro corresponding to the ambient temperature during the process of ambient temperature change, so as to obtain static measurement results, and determine the temperature characteristic measurement results of the inductive synchro based on the ambient temperature and the static measurement results. The specified angle is determined by the following methods: Determine the electrical cycle corresponding to the fine channel of the inductive synchronizer; The specified angle is determined based on the mechanical angle corresponding to the specified sine and cosine phases within the electrical cycle, wherein the specified sine and cosine phases include at least one of 0, π / 4, π / 2, and 3π / 4; The inductive synchro is provided with multiple temperature measuring points. Determining the temperature characteristic measurement results of the inductive synchro based on the ambient temperature and the static measurement results corresponding to the multiple specified angles includes: The ambient temperature corresponding to each of the temperature measurement points and the static measurement results corresponding to each of the multiple specified angles are obtained. The average temperature variation characteristic curves corresponding to each of the multiple specified angles are obtained based on the ambient temperature and the static measurement results. The temperature characteristic measurement results are determined using the average temperature variation characteristic curves.

8. The apparatus according to claim 7, characterized in that, The device further includes: The second temperature control module is used to determine the upper and lower temperature limits of the preset temperature range after obtaining the static measurement results, adjust the ambient temperature of the measurement environment to the lower temperature limit, and gradually adjust the ambient temperature from the lower temperature limit to the upper temperature limit according to a preset step size. The dynamic measurement module is used to control the rotating mechanism to rotate at a constant speed within a preset angle range after each adjustment, and to dynamically collect the angle information output by the inductive synchronizer corresponding to the ambient temperature during the uniform rotation of the rotating mechanism, so as to obtain the dynamic measurement result. Based on the ambient temperature and the dynamic measurement result, the temperature characteristic reference result of the inductive synchronizer is determined. The verification module is used to verify the temperature characteristic measurement result using the temperature characteristic reference result. If the temperature characteristic reference result and the temperature characteristic measurement result meet the preset matching conditions, the temperature characteristic measurement result is determined to have passed the verification.

9. A computer device, characterized in that, include: A memory and a processor are interconnected, the memory storing computer instructions, and the processor executing the computer instructions to perform the method for measuring the temperature characteristics of an inductive synchro in a vacuum environment as described in any one of claims 1 to 6.

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