CN209673286U - High and low temperature environment torque sensor calibrating installation - Google Patents
High and low temperature environment torque sensor calibrating installation Download PDFInfo
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- CN209673286U CN209673286U CN201920760602.5U CN201920760602U CN209673286U CN 209673286 U CN209673286 U CN 209673286U CN 201920760602 U CN201920760602 U CN 201920760602U CN 209673286 U CN209673286 U CN 209673286U
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- temperature environment
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- torque sensor
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Abstract
The utility model discloses a kind of high and low temperature environment torque sensor calibrating installations, including upper computer module, drive module, torsion limitation module, high and low temperature environment control module, standard torque measurement module, load blocks, transmission connection module, experimental bench and support frame module.In a calibration process, the concentricity of torque sensor to be checked Yu transmission shaft initial position is measured using laser alignment instrument, the function multinomial between concentricity and temperature obtained by simulation study, to which prediction obtains within the scope of ± 100 DEG C concentricity under arbitrary temp, to calculate because concentricity changes the influence to torque measurement, and final measurement is accidentally modified.The utility model can calibrate the torque sensor under high and low temperature environment, and the measurement result of high and low temperature environment torque sensor is traced to the source to national torque reference.
Description
Technical field
The utility model relates to a kind of torque sensor calibrating installations, more particularly, to a kind of high and low temperature environment torque sensing
Device calibrating installation.
Background technique
It is more and more accurate, complex instrument mechanism using ring with the fast development of China's shipbuilding industry, aerospace industry etc.
Border extends to high and low temperature environment from room temperature.In order to guarantee the reliability and stability of mechanism, it is necessary to it is carried out assembly precision,
Transmission efficiency, vibration, power and torque, rigidity and the more performance tests of unit for electrical property parameters.Safe operation due to torque to device
Have an important influence with service life, thus torque sensor its under high and low temperature environment using more and more extensive.
Currently, the domestic calibrating to torque sensor is mainly according to JJG 557-2011 " standard torquemeter calibrating rule
Journey ", torque sensor is examined and determine using the quasi- machine of torque mark (base) or loading system.With torque mark (base) standard apparatus or
When loading system examines and determine the accuracy of torque sensor, torquer at least (20 DEG C) preheating 0.5h of isothermal on the table need to be made
After~1h, it can be calibrated.
In conclusion torque sensor when the existing torque sensor calibration method in China is only capable of to 20 DEG C at present carries out
Calibrating, Shang Buneng complete the calibrating to torque sensor under high and low temperature environment.
Utility model content
For the deficiency of background technique, the purpose of this utility model is to provide a kind of high and low temperature environment torque sensor schools
Quasi- method and device.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
High and low temperature environment torque sensor calibrating installation, including upper computer module, drive module, torque limit module, height
Low temperature environment control module, standard torque measurement module, load blocks, transmission connection module, experimental bench and support frame module, on
Position machine module is electrically connected with drive module, torque limit module, standard torque measurement module, load blocks respectively, drives mould
It is connected between block and transmission connection module by torque limit module, drive module, torque limit module, high and low temperature environment control
Module, standard torque measurement module, load blocks, transmission connection module are supported on experimental bench and support frame module;
The upper computer module is used for accurate control, torque measurement to high and low temperature environment torque sensor calibrating installation
Value display and data recording and processing;
The drive module is made of servo motor and speed reducer, and servo motor is connect with speed reducer, the servo
Motor provides driving source for high and low temperature environment torque sensor calibrating installation, and the speed reducer puts the torque of output
Greatly, to reach the range of high and low temperature environment torque sensor calibrating installation;
The transmission connection module is made of shaft coupling and transmission shaft, and transmission shaft is located on shaft coupling;Wherein, transmission shaft
For the transmitting using the rigid shaft of Invar alloy material, for torque;Shaft coupling is positive coupling;
The torque limit module is made of torque limiter and limit switch, and limit switch is located at torque limiter
On;When servo motor output torque is more than the load of torque limiter, the torque limiter is by servo motor and transmission
Axis disconnects, while the limit switch generates a high potential signal feedback and makes upper computer module control to upper computer module
Servo motor processed stops load, to achieve the purpose that protect high and low temperature environment torsion calibration device;Using torque limiter, guarantee
Device will not be damaged in the case where maloperation, substantially increase the safety and service life of torque standard device;
Be equipped with torque sensor to be checked in the high and low temperature environment control module, torque sensor to be checked and transmission shaft it
Between pass through shaft coupling connect;The high and low temperature environment control module provides high and low temperature environment for torque sensor to be checked and treats
It examines torque sensor and carries out temperature control;
The standard torque measurement module is connected in transmission connection module, standard torque measurement module and transmission shaft it
Between pass through shaft coupling connect;The standard torque measurement module uses standard torque sensor, for turning round to high and low temperature environment
Square calibrating device for sensors carries out torque measurement;
The load blocks are connected on transmission shaft, and the load blocks are the calibration of high and low temperature environment torque sensor
Device provides load.
Preferably, the high and low temperature environment control module is by high and low temperature environment experimental box, airtight bearing and thermal protection
Cover composition, high and low temperature environment experimental box can provide the high and low temperature test ring of simulation in the ground experiment of torque sensor to be checked
Border;High and low temperature environment experimental box is mounted on experimental bench and support frame module, and the airtight bearing is mounted on transmission shaft and penetrates
Be pierced by the tank wall of high and low temperature environment experimental box, to prevent the heat of external environment from spreading into cabinet;The thermal shield
Torque sensor to be checked is covered, the thermal shield can effectively guarantee that torque sensor to be checked itself can work in suitable temperature
It spends in range, and other parts are still in high and low temperature environment;Using airtight bearing, effectively prevent external environment heat to
Diffusion, ensure that the stability of high and low temperature environment experimental box internal temperature in high and low temperature environment experimental box, while also have energy conservation
The advantage of environmental protection.
Preferably, the load blocks are made of brake and L shape support plate, transmission shaft is set on the brake, system
Dynamic device fixation is located in L shape support plate, and the fixation of L shape support plate is located on experimental bench and support frame module;The brake is logical
The mode for crossing power-off is fixed locked by transmission shaft, provides load for high and low temperature environment torque sensor calibrating installation.L shape support plate
Setting, both improved brake, experimental bench and support frame module and the integrally-built stability of device, fixing and balance energy
Power, and improve the convenience of the operations such as installation, removal, replacement, maintenance.
Preferably, the experimental bench and support frame module is made of cellular workbench, pedestal and support frame, bottom
Seat, high and low temperature environment experimental box, L shape support plate are installed on cellular workbench, and support frame fixation is located on pedestal, are watched
Motor, speed reducer is taken to be supported on the support frame.The experimental bench and branch be made of cellular workbench, pedestal and support frame
Support module had not only improved the integrally-built stability of device, fixing and balanced capacity, but also improved installation, disassembly, more
The convenience of operations such as change, safeguard.
In the utility model, upper computer module is located in PC control cabinet, and all cables are passed from high and low temperature environment torque
Sensor calibrating installation accesses in PC control cabinet.
The utility model patent provides a kind of high and low temperature environment torsion based on high and low temperature environment torque sensor calibrating installation
Square sensor calibrating method, including following particular content:
Torque sensor to be checked, standard torque sensor, the power supply line of computer, each connecting cable are connected to first, and
Guarantee power supply line ground connection, debug entire TT&C system function, guarantees that entire TT&C system works normally;In setting initial temperature
Afterwards, the original coaxial degree between torque sensor and transmission shaft to be checked is measured using laser alignment instrument, passes through simulating analysis
Obtain the functional relation between concentricity and temperature variation;
Then it under several temperature measuring points, is exported by control servo motor corresponding with several temperature measuring points
Torque examine and determine point, record the torque value of torque sensor to be checked output and the torque value of standard torque sensor;It will be to be checked
The torque value that torque sensor obtains subtracts the torque value of standard torque sensor, obtains torque sensor to be checked in several temperature
The error of indication for spending measurement point calculates concentricity and height by the functional relation between the concentricity and temperature derived
Influence of the warm environment to measurement result, and final measurement error is compensated, complete the calibration to torque sensor to be checked.
Specifically, the measurement result of torque sensor to be checked can be traceable to national torque reference.
Preferably, by the original coaxial degree for measuring torque sensor and transmission shaft to be checked, using simulating analysis
The concentricity within the scope of ± 100 DEG C under arbitrary temp is obtained, is used for compensating measurement errors, and repair to final measurement
Just.
Compared with prior art, the utility model has the following beneficial effects:
1. one of the utility model high and low temperature environment torque sensor calibrating installation can be to (- 100~100) DEG C height
The torque sensor to be checked of (0~500) Nm measurement range is calibrated under low temperature environment, by high and low temperature environment torque sensing to be checked
The measurement result of device is traced to the source to national torque reference.
2. one of the utility model high and low temperature environment torque sensor calibration method can be effectively any to stiff shaft
At a temperature of concentricity carry out forecast assessment, and analyze within the scope of ± 100 DEG C under arbitrary temp concentricity to measurement result
It influences, and carries out the amendment of final measurement.
3. high and low temperature environment torsion calibration device can be effectively protected in the torque limiter in the utility model, dress ensure that
Setting will not be damaged in the case where maloperation, substantially increase the service life of high and low temperature environment torsion calibration device.
4. the high and low temperature environment experimental box in the utility model uses airtight bearing, it is therefore prevented that the heat in external environment
It is spread into high and low temperature environment experimental box, ensure that the stability of the environment in experimental box, while energy conservation and environmental protection again.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the high and low temperature environment torque sensor calibrating installation entirety of the utility model;
Fig. 2 is the structural schematic diagram of the torque limit module of the utility model;
Fig. 3 is the structural schematic diagram of the airtight bearing of the utility model;
Fig. 4 is the structural schematic diagram of the PC control cabinet of the utility model;
Fig. 5 is that the torque parameter of the utility model is traced to the source and trace to the source transmission figure;
Fig. 6 is the work flow diagram of the high and low temperature environment torque sensor calibrating installation of the utility model;
In figure: 1, thermal shield;2, high and low temperature environment experimental box;3, airtight bearing;4, transmission shaft;5, speed reducer;6, it watches
Take motor;7, support frame;8, pedestal;9, shaft coupling;10, torque sensor to be checked;11, cellular workbench;12, L support plate;
13, brake;14, standard torque sensor;15, torque limiter;16, limit switch;17, PC control cabinet;
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further detail.
High and low temperature environment torque sensor calibrating installation, as shown in figures 1 to 6, including upper computer module, drive module, torque
Limit module, high and low temperature environment control module, standard torque measurement module, load blocks, transmission connection module, experimental bench and branch
Support module, upper computer module are electrical with drive module, torque limit module, standard torque measurement module, load blocks respectively
Connection is connected between drive module and transmission connection module by torque limit module, drive module, torque limit module, height
Low temperature environment control module, standard torque measurement module, load blocks, transmission connection module are supported on experimental bench and support
On frame module;
Upper computer module is used to show the accurate control of high and low temperature environment torque sensor calibrating installation, torque measurement
And data recording and processing;
Drive module is made of servo motor 6 and speed reducer 5, and servo motor 6 is connect with speed reducer 5, and servo motor is height
Low temperature environment torque sensor calibrating installation provides driving source, and speed reducer amplifies the torque of output, to reach high/low temperature
The range of environment torque sensor calibrating installation;
Transmission connection module is made of shaft coupling 9 and transmission shaft 4, and transmission shaft 4 is located on shaft coupling 9;
Torque limit module is made of torque limiter 15 and limit switch 16, and limit switch 16 is located at torque limiter 15
On;When 6 output torque of servo motor is more than the load of torque limiter 15, torque limiter 15 is by servo motor 6 and is driven
Axis 4 disconnects, while limit switch 16 generates a high potential signal feedback and makes upper computer module control to upper computer module
Servo motor 6 stops load;
Be equipped with torque sensor 10 to be checked in high and low temperature environment control module, torque sensor 10 to be checked and transmission shaft 4 it
Between connected by shaft coupling 9;High and low temperature environment control module is that torque sensor 10 to be checked provides high and low temperature environment and to be checked
Torque sensor 10 carries out temperature control;
Standard torque measurement module is connected in transmission connection module, is led between standard torque measurement module and transmission shaft 4
Cross the connection of shaft coupling 9;Standard torque measurement module uses standard torque sensor, for high and low temperature environment torque sensor school
Standard apparatus carries out torque measurement;
Load blocks are connected on transmission shaft 4, and load blocks provide negative for high and low temperature environment torque sensor calibrating installation
It carries.
In the present embodiment, high and low temperature environment control module is by high and low temperature environment experimental box 2, airtight bearing 3 and thermal shield 1
Composition, high and low temperature environment experimental box 2 can provide the high and low temperature test ring of simulation in the ground experiment of torque sensor 10 to be checked
Border;High and low temperature environment experimental box 2 is mounted on experimental bench and support frame module, and airtight bearing 3 is mounted on transmission shaft 4 and penetrates and wear
Out on the tank wall of high and low temperature environment experimental box 2, thermal shield 1 covers torque sensor 10 to be checked.
In the present embodiment, load blocks are made of brake 13 and L shape support plate 12, and transmission shaft 4 is located on brake 13,
The fixation of brake 13 is located in L shape support plate 12, and the fixation of L shape support plate 12 is located on experimental bench and support frame module;Brake
13 is fixed locked by transmission shaft 4 by way of power-off, provides load for high and low temperature environment torque sensor calibrating installation.
In the present embodiment, experimental bench and support frame module are made of cellular workbench 11, pedestal 8 and support frame 7, bottom
Seat 8, high and low temperature environment experimental box 2, L shape support plate 12 are installed on cellular workbench 11, and the fixation of support frame 7 is located at bottom
On seat 8, servo motor 6, speed reducer 5 are supported on support frame 7.
Specifically, pedestal 8 is fixed on cellular workbench 11, and support frame 7 is fixed on pedestal 8, is used to support servo
Motor 6, speed reducer 5, standard torque sensor 14;Servo motor 6 and speed reducer 5, which link together, constitutes drive module, slows down
It is linked together between machine 5 and transmission shaft 4 by torque limiter 15, limit switch 16 is housed on torque limiter 15;Transmission
Axis 4 is penetrated into high and low temperature environment experimental box 2 by airtight bearing 3;High and low temperature environment experimental box 2 is fixed on cellular workbench
On 11;Transmission shaft 4 is linked together by shaft coupling 9 with torque sensor 10 to be checked, and shaft coupling 9 and transmission shaft 4 are then passed through
Connection;Transmission shaft 4 is pierced by high and low temperature environment experimental box 2 by airtight bearing 3;Equipped with shaft coupling 9, to be checked inside thermal shield 1
Torque sensor 10;Transmission shaft 4 is connected to standard torque sensor 14 by shaft coupling 9;Transmission shaft 4 extend into brake 13
In;Brake 13 is bolted in L shape support plate 12.
In the present embodiment, upper computer module is located in PC control cabinet 17, and all cables are passed from high and low temperature environment torque
Sensor calibrating installation accesses in PC control cabinet 17, as shown in Figure 4.
High and low temperature environment torque sensor calibration method, as shown in figures 1 to 6, including following particular content:
Torque sensor to be checked, standard torque sensor, the power supply line of computer, each connecting cable are connected to first, and
Guarantee power supply line ground connection, debug entire TT&C system function, guarantees that entire TT&C system works normally;In setting initial temperature
Afterwards, the original coaxial degree between torque sensor and transmission shaft to be checked is measured using laser alignment instrument, passes through simulating analysis
Obtain the functional relation between concentricity and temperature variation;
Then it under several temperature measuring points, is exported by control servo motor corresponding with several temperature measuring points
Torque examine and determine point, record the torque value of torque sensor to be checked output and the torque value of standard torque sensor;It will be to be checked
The torque value that torque sensor obtains subtracts the torque value of standard torque sensor, obtains torque sensor to be checked in several temperature
The error of indication for spending measurement point calculates concentricity and height by the functional relation between the concentricity and temperature derived
Influence of the warm environment to measurement result, and final measurement error is compensated, complete the calibration to torque sensor to be checked.
In the present embodiment, by measuring the original coaxial degree of torque sensor and transmission shaft to be checked, using simulation analysis side
Method obtains the concentricity within the scope of ± 100 DEG C under arbitrary temp, is used for compensating measurement errors.
In the present embodiment, the original coaxial degree of connecting shaft under normal temperature environment is measured using laser alignment instrument, then by imitative
True analysis method carries out assessment prediction to coaxiality error under high and low temperature environment, and compensates.In the utility model, emulation point
Analysis method carries out simulation analysis to coaxiality error using COMSOL Multiphysics software, obtain concentricity and temperature it
Between relationship and original coaxial degree needed for control range.Simulating analysis it is specific in as follows:
In COMSOL Multiphysics software, control original coaxial degree is invariable, simulation analysis different temperatures item
Concentricity variable quantity because of caused by environmental change under part, obtains the relationship under current concentricity between concentricity and temperature;
Then change the input value of original coaxial degree, concentricity is because of caused by environmental change under continuation simulation analysis condition of different temperatures
Variable quantity finally obtains the range controlled needed for original coaxial degree by constantly changing the value of original coaxial degree.
In the present embodiment, original coaxial degree is measured by laser alignment instrument and simulation analysis is obtained varies with temperature
Concentricity predicts Value Data, using support vector machines (Support Vector Machine, SVM) between concentricity and temperature
Relationship predicted.SVM can not only be used to classify, and can also be used to do regression analysis.For training sample set
(xi, yi) (wherein, i=1,2 ..., n;xi∈ Rn is input variable;yi∈ R is corresponding output valve), support vector machines is returned
Returning theoretical basic thought is the Nonlinear Mapping for finding an input space to output spaceBy this Nonlinear Mapping,
Data x is mapped to a high-dimensional feature space F, and carries out linear regression with following estimation function in feature space:
φ:Rm→F,ω∈F
Wherein, b is threshold value.Function approximation problem is equivalent to such as minor function:
R in formulareg(f) --- objective function;
S --- sample size;
C --- mistake penalty factor;
λ --- adjustment constant;
||ω||2--- complexity reflection f flat in higher dimensional space.
In view of linear ε insensitive loss function has preferable sparsity, following loss function can be obtained:
|y-f(x)|ε=max 0, | y-f (x)-ε | (3)
Empirical risk function are as follows:
According to statistical theory, support vector machines is to following objective function minimization to determine regression function:
In formula, C --- the weight parameter for balance model complexity item and training error item;
ξi *,ξi--- relaxation factor;
ε --- insensitive loss function.
The problem can be converted into following dual problem:
The above problem is solved, Support vector regression function can be obtained:
According to the regression theory of support vector machines, suitable support vector machines tool box is selected to obtain coaxality measurement experiment
The measurement data obtained carries out analysis prediction, obtains the relationship between concentricity and temperature, can predict to obtain within the scope of ± 100 DEG C
Concentricity under arbitrary temp.By calculating the relative error of concentricity, ± 100 are acquired by the product of range and relative error
Within the scope of DEG C under arbitrary temp concentricity to error delta M caused by torque measurementt:
Δ d in formula --- prediction gained concentricity;
D --- shaft coupling radius;
M --- current surveyed torque value;
The torque value that final torque sensor to be checked measures is M1, the torque value that standard torque sensor measures is M2, then most
The error amount Δ M measured eventually are as follows:
Δ M=M1-M2+ΔMt (9)
It is turned round as shown in figure 5, the utility model traces to the source the measurement result of high and low temperature environment torque sensor to be checked to country
Square benchmark.
In the present embodiment, as shown in fig. 6, the specific implementation of the course of work of high and low temperature environment torque sensor calibrating installation
Steps are as follows:
1) setting laboratory and the temperature of high and low temperature environment experimental box is 20 DEG C, in high and low temperature environment experimental box case
Temperature is stablized after 20 DEG C, and torque sensor to be checked, standard torque sensor are connected wiring as requested respectively, guarantees whole
A TT&C system works normally;
2) concentricity between tested torque sensor and transmission shaft is measured using laser alignment instrument, is obtained according to simulation analysis
Functional relation and formula (8) between the concentricity arrived and torque predict under Current Temperatures concentricity to torque measurement
As a result influence starts servo motor after transmission shaft heat transfer is stablized, make transmission shaft rotate in one direction (as clockwise or
Counterclockwise), corresponding torque value is exported, successively the reading value M of record standard torque sensor10With the reading of tested torque sensor
Numerical value M20;
4) using 50Nm as step-length, slow rotating drive shaft, the successively reading value M of record standard torque sensor1j, tested turn round
The reading value M of square sensor2j, wherein j is that the temperature of high and low temperature environment experimental box is numbered;
5) after the DATA REASONING for completing all torque calibration points, start the cooling process of high and low temperature environment experimental box, it will be high
Low temperature environment experimental box is cooled to room temperature, and transmission shaft is replaced in measurement origin;
6) with 20 DEG C for step-length, successively by the temperature of high and low temperature environment experimental box rise to or be down to 40 DEG C, 60 DEG C, 80 DEG C,
100 DEG C, 0 DEG C, -20 DEG C, -40 DEG C, -60 DEG C, -80 DEG C, -100 DEG C repeat step 2)~4), until completing the survey of all data
Amount;
7) after completing a direction calibration, the calibration of opposite direction is carried out according to same steps.
So far, it by carrying out error analysis to the error at different location and compensating, is passed to obtain torque to be checked
The performance parameters such as the error of indication, the stability of sensor complete the calibration to high and low temperature environment torque sensor to be checked, realize height
Warm environment torque parameter is traced to the source.
The above is only the preferable case study on implementation of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes,
It still falls in the protection scope of technical solutions of the utility model.
Claims (4)
1. high and low temperature environment torque sensor calibrating installation, it is characterised in that: including upper computer module, drive module, torque limit
Molding block, high and low temperature environment control module, standard torque measurement module, load blocks, transmission connection module, experimental bench and support
Frame module, upper computer module electrically connect with drive module, torque limit module, standard torque measurement module, load blocks respectively
It connects, is connected between drive module and transmission connection module by torque limit module, drive module, torque limit module, height
Warm environmental control module, standard torque measurement module, load blocks, transmission connection module are supported on experimental bench and support frame
In module;
The drive module is made of servo motor and speed reducer, and servo motor is connect with speed reducer, the servo motor
Driving source is provided for high and low temperature environment torque sensor calibrating installation;
The transmission connection module is made of shaft coupling and transmission shaft, and transmission shaft is located on shaft coupling;
The torque limit module is made of torque limiter and limit switch, and limit switch is located on torque limiter;
It is equipped with torque sensor to be checked in the high and low temperature environment control module, leads between torque sensor and transmission shaft to be checked
Cross shaft coupling connection;The high and low temperature environment control module is that high and low temperature environment experimental box can be on the ground of torque sensor to be checked
Interview tests the middle the high and low temperature test environment for providing simulation and carries out temperature control to torque sensor to be checked;
The standard torque measurement module is connected in transmission connection module, is led between standard torque measurement module and transmission shaft
Cross shaft coupling connection;The standard torque measurement module uses standard torque sensor;
The load blocks are connected on transmission shaft, and the load blocks are high and low temperature environment torque sensor calibrating installation
Load is provided.
2. high and low temperature environment torque sensor calibrating installation according to claim 1, it is characterised in that: the high/low temperature
Environmental control module is made of high and low temperature environment experimental box, airtight bearing and thermal shield;High and low temperature environment experimental box is mounted on
On experimental bench and support frame module, the airtight bearing is mounted on the case that transmission shaft penetrated and be pierced by high and low temperature environment experimental box
On wall, the thermal shield covers torque sensor to be checked.
3. high and low temperature environment torque sensor calibrating installation according to claim 1 or 2, it is characterised in that: described is negative
It carries module to be made of brake and L shape support plate, transmission shaft is set on the brake, and brake fixation is located in L shape support plate, L
The fixation of shape support plate is located on experimental bench and support frame module;The brake is by way of power-off by transmission shaft fixing lock
Extremely, load is provided for high and low temperature environment torque sensor calibrating installation.
4. high and low temperature environment torque sensor calibrating installation according to claim 3, it is characterised in that: the experimental bench
And support frame module is made of cellular workbench, pedestal and support frame, pedestal, high and low temperature environment experimental box, L shape support plate
It is installed on cellular workbench, support frame fixation is located on pedestal, and servomotor, gear reducer is supported on support frame
On.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113432563A (en) * | 2021-06-28 | 2021-09-24 | 中国计量大学 | Extreme environment linear sensor calibration device and method |
CN113654697A (en) * | 2021-08-04 | 2021-11-16 | 上海航天设备制造总厂有限公司 | Special torque measurement system for butt lock drive combination and in-situ calibration method |
-
2019
- 2019-05-24 CN CN201920760602.5U patent/CN209673286U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113432563A (en) * | 2021-06-28 | 2021-09-24 | 中国计量大学 | Extreme environment linear sensor calibration device and method |
CN113432563B (en) * | 2021-06-28 | 2023-06-09 | 中国计量大学 | Extreme environment linear sensor calibration device and method |
CN113654697A (en) * | 2021-08-04 | 2021-11-16 | 上海航天设备制造总厂有限公司 | Special torque measurement system for butt lock drive combination and in-situ calibration method |
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Granted publication date: 20191122 Termination date: 20200524 |