CN110470440A - A kind of elastomer performance test equipment and elastomer performance test method - Google Patents
A kind of elastomer performance test equipment and elastomer performance test method Download PDFInfo
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- CN110470440A CN110470440A CN201910505888.7A CN201910505888A CN110470440A CN 110470440 A CN110470440 A CN 110470440A CN 201910505888 A CN201910505888 A CN 201910505888A CN 110470440 A CN110470440 A CN 110470440A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention discloses a kind of elastomer performance test equipments, feature be include be provided with assessment parameter, preload control parameter and testing and control parameter host computer, main control module, servo-driven module, servo electric jar, test fixture and acquisition module, test fixture includes testboard for placing elastomer to be measured and for applying the test execution mechanism that stressed movement is arranged on testboard to elastomer to be measured, while also disclosing the test method using the test equipment；Advantage drives test execution mechanism to test elastomer to be measured using servo electric jar, greatly reduce the device space, servo electric jar can greatly reduce purchase cost, reduce equipment maintenance difficulty, and the control technology of servo electric jar is more mature, it is convenient that technical support and upgrading are carried out to user；Overall process is divided into preloading procedure and test process, and influence of the stress to test of elastomer to be measured can be effectively eliminated by preloading, and improves test result precision.
Description
Technical field
The present invention relates to a kind of part performance test apparatus and test method, especially a kind of elastomer performance test equipment
With elastomer performance test method.
Background technique
Elastomer performance is tested, it usually needs test action is applied to elastomer to be measured by test equipment and is obtained
Elastomer to be measured real time pressure information during the test, real-time displacement information and test time-domain information are simultaneously sent out by acquisition module
It send to host computer, then obtains the rigidity value and angle of lag of elastomer to be measured by host computer calculation processing, and comment with preset
Estimate parameter to be compared to obtain the performance test results of elastomer to be measured, the measuring technology and the performance for obtaining elastomer to be measured are surveyed
The process of test result is more mature；However, being currently used for the MTS dynamic test set of elastomer product test using hydraulic servo
Valve controls oil cylinder, and test analysis is done in the more complicated laboratory that is chiefly used in of system structure；There are hydraulic noises for such equipment greatly, equipment
The factors such as space occupied is big and purchase cost is expensive are difficult large-scale popularization and application in the production line, and MTS dynamic is tested
System is at present also in industry simple monopoly state, and there are biggish limitations in user's technical support and purchase cost.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of compact-sized, economic and reliable elastomer performance tests to set
Standby and elastomer performance test method.
The technical scheme of the invention to solve the technical problem is: a kind of elastomer performance test equipment, including
Be provided with assessment parameter, the host computer for preloading control parameter and testing and control parameter, main control module, servo-driven module,
Servo electric jar, test fixture and acquisition module, the test fixture include for place the testboard of elastomer to be measured and
For applying the test execution mechanism that stressed movement is arranged on the testboard, the host computer to elastomer to be measured
It sends and preloads control parameter and testing and control parameter to the main control module, the main control module is according to preloading
Control parameter parses corresponding preloading control instruction and is sent to the servo-driven module, the servo-drive mould
Test execution described in output rod synchronous drive of the root tuber according to the preloading control instruction control servo electric jar
Mechanism applies corresponding preloading to elastomer to be measured and acts, and the main control module is according to the precipitation pair of testing and control parametric solution
The testing and control answered instructs and is sent to the servo-driven module, and the servo-driven module is according to the test control
Test execution mechanism described in the output rod synchronous drive of the system instruction control servo electric jar applies elastomer to be measured
Corresponding test action, real-time pressure of the output rod of the acquisition module acquisition servo electric jar in test action
Force information, real-time displacement information and test time-domain information are simultaneously sent to the host computer, and the host computer is according to receiving
Real time pressure information, real-time displacement information and test time-domain information obtain the performance test value of elastomer to be measured after, will be to be measured
The performance test value of elastomer is compared to obtain the performance test results of elastomer to be measured with assessment parameter.
The preloading control instruction includes the preloading speed of service, the pre-add of the output rod of the servo electric jar
Load mode preloads initial position, preloads movement section, preload target value and preload cycle period, the test
Control instruction includes test loading method, test movement section, test run total period, sine wave amplitude p and object run frequency
Rate f, the main control module are provided with electric cam module, and sine wave fortune is provided in the electric cam control module
Analytic modell analytical model is calculated, the sine wave operation analytic modell analytical model is used to according to the testing and control instruction include Y-axis and X-axis
Sine wave motion model is established in two-dimensional coordinates, the X-axis is the imaginary axis to travel at the uniform speed always, the speed to travel at the uniform speed
Vx=360 ° × f, the Y axis coordinate y of the sine wave motion model and the X axis coordinate x meet relation function: y=p/2 ×
Sin(x), wherein y indicates that the target position numerical value of the output rod of servo electric jar, x indicate the position in imaginary axis, the assignment of x
Range is 0 ° ~ 360 °, and the electric cam control module is used to obtain on the sine wave motion model according to the value of x
The target velocity along the y axis and aimed acceleration and transmission along the y axis that Y axis coordinate, each pair of point of each point are answered
To the servo-driven module, the servo-driven module is used for the Y axis coordinate according to each point received, Mei Gedian
The output rod of servo electric jar described in corresponding target velocity along the y axis and aimed acceleration control along the y axis
Test execution mechanism described in synchronous drive applies corresponding test action to elastomer to be measured, until it is always all to reach test run
Stop motion after phase.Electric cam module and sine wave operation analytic modell analytical model are set in main control module, thus by setting
Target operating frequency and sine wave amplitude are converted into the actual control parameter to the output rod of servo electric jar, i.e. target position
It sets, target velocity and aimed acceleration, controls more accurate；Entire test process is a dynamic test process, by acquiring
For the real data of module acquisition after host computer calculation processing, calculated result obtained is more accurate, can be effectively real
Now to the measurement of elastomer performance to be measured.
The preloading mode is displacement loading method, and the preloading campaign section is to preload displacement section,
The preload target value is to preload displacement target value, and the test loading method is displacement loading method, described
Test movement section is test displacement movement section.
The preloading mode is pressure-loaded mode, and the preloading campaign section is pre-loaded pressure section,
The preload target value is pre-loaded pressure target value, and the test loading method is pressure-loaded mode, described
Test movement section is that test pressure moves section.Servo electric jar is controlled using pressure-loaded mode, can be good at realizing
Control accuracy requirement.
Use the elastomer performance test method of above-mentioned elastomer performance test equipment, comprising the following steps:
1. -1 by elastomer fixed placement to be measured on testboard, main control module controls servo-electric by servo-driven module
The output rod of cylinder is run with the preloading speed of service set to the preloading initial position of setting；
1. -2 main control modules drive test execution mechanism according to the output rod that the preloading mode of setting controls servo electric jar
Preloading movement is applied to elastomer to be measured preloading in movement section, after reaching the preloading cycle period of setting,
Main control module control servo electric jar output rod drive test execution mechanism with the preloading speed of service set run to
Position corresponding with the preload target value of setting, and using the position as test starting point；
1. -3 servo-driven modules are answered according to Y axis coordinate, each pair of point of each point on the sine wave motion model received
Target velocity along the y axis and the output rod synchronous drive of aimed acceleration control servo electric jar along the y axis survey
It tries executing agency and corresponding test action is applied to elastomer to be measured in the test campaign section of setting since testing starting point,
Until reaching stop motion after test run total period, acquisition module acquires the real-time pressure of the output rod of servo electric jar in real time
Information, real-time displacement information and test time-domain information are simultaneously sent to the host computer；
1. -4 host computers are filtered and cut according to the real time pressure information, real-time displacement information and the test time-domain information that receive
It takes, obtains the displacement waveform and pressure waveform in same test time domain, and pass through the data processing script mould of MATLAB tool
Block obtains elasticity to be measured to displacement waveform and pressure waveform progress Hanning window shaping and Fourier transform operation on same time domain
Dynamic rate Kd, the angle of lag Phase and test run frequency f1 of body, and obtained by Kd, phase and test run frequency f1
Damped coefficient C, C=Kd × sin (phase × π/180)/(2 × π × f1)；
1. Kd, phase and C compared with the assessment parameter of setting correspond to, are obtained the performance of elastomer to be measured by -5 host computers
Test result completes test process.
Compared with the prior art, the advantages of the present invention are as follows when test, is sent by host computer and preload control parameter and survey
Control parameter is tried to main control module, main control module is sent out after parsing corresponding preloading control instruction and testing and control instruction
It send to servo-driven module, servo-driven module controls the output rod synchronous drive test execution mechanism of servo electric jar to be measured
After elastomer applies corresponding movement, by the real time data during acquisition module collecting test and supreme position machine is sent, it is upper
After machine obtains the performance test value of elastomer to be measured according to the real time data received, by the performance test value of elastomer to be measured with
Assessment parameter is compared to obtain the performance test results of elastomer to be measured；Test execution machine is driven by using servo electric jar
Structure tests elastomer to be measured to obtain real time pressure information, real-time displacement information and test time-domain information, then by host computer
The performance test value that elastomer to be measured is obtained using existing mature data processing method, is greatly reduced the device space, examined
Meet the online detection requirements of elastomer products most absolutely in survey ability；Servo electric jar can greatly reduce purchase cost, subtract
Skinny device maintenance difficulty, and the control technology of servo electric jar is more mature, it is convenient that technical support and liter are carried out to user
Grade；Overall process is divided into preloading procedure and test process, and the stress of elastomer to be measured can be effectively eliminated by preloading
Influence to test improves test result precision.
Detailed description of the invention
Fig. 1 is system structure functional block diagram of the invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one: a kind of elastomer performance test equipment, including be provided with assessment parameter, preload control parameter and survey
Try host computer 1, main control module 2, servo-driven module 3, servo electric jar 4, test fixture and the acquisition module of control parameter
5, test fixture includes for placing the testboard of elastomer to be measured (figure is not shown) and for applying pressure to elastomer to be measured
Movement the test execution mechanism 6 on testboard is set, host computer 1, which is sent, preloads control parameter and testing and control parameter extremely
Main control module 2, main control module 2 parse corresponding preloading control instruction and are sent to and watch according to preloading control parameter
Drive module 3 is taken, servo-driven module 3 is surveyed according to the output rod synchronous drive for preloading control instruction control servo electric jar 4
It tries executing agency 6 and corresponding preloading movement is applied to elastomer to be measured, main control module 2 is precipitated according to testing and control parametric solution
Corresponding testing and control instructs and is sent to servo-driven module 3, and servo-driven module 3 instructs control servo according to testing and control
The output rod synchronous drive test execution mechanism 6 of electric cylinder 4 applies corresponding test action, acquisition module 5 to elastomer to be measured
Acquire real time pressure information, real-time displacement information and test time-domain information of the output rod of servo electric jar 4 in test action
And supreme position machine 1 is sent, host computer 1 is obtained according to the real time pressure information, real-time displacement information and the test time-domain information that receive
To after the performance test value of elastomer to be measured, by the performance test value of elastomer to be measured with assessment parameter be compared to obtain it is to be measured
The performance test results of elastomer, wherein preload the preloading operation speed for the output rod that control instruction includes servo electric jar 4
Degree preloads mode, preloads initial position, preloading movement section, preload target value and preload cycle period, test
Control instruction includes test loading method, test movement section, test run total period, sine wave amplitude p and object run frequency
Rate f, main control module 2 are provided with electric cam module, and sine wave operation analytic modell analytical model is provided in electric cam control module,
Sine wave operation analytic modell analytical model is used to establish sine wave in the two-dimensional coordinates for including Y-axis and X-axis according to testing and control instruction
Motion model, X-axis are the imaginary axis to travel at the uniform speed always, the speed Vx=360 ° × f to travel at the uniform speed, the Y of sine wave motion model
Axial coordinate y and X axis coordinate x meet relation function: y=p/2 × sin(x), wherein y indicates the mesh of the output rod of servo electric jar 4
Mark setting value, x indicate the position in imaginary axis, and the assignment range of x is 0 ° ~ 360 °, and electric cam control module is used for according to x
Value obtain the target velocity along the y axis and edge that Y axis coordinate, each pair of point of each point on sine wave motion model are answered
The aimed acceleration of Y direction is simultaneously sent to servo-driven module 3, and servo-driven module 3 is used for according to each point received
Y axis coordinate, the target velocity along the y axis that each pair of point is answered and aimed acceleration control servo-electric along the y axis
The output rod synchronous drive test execution mechanism 6 of cylinder 4 applies corresponding test action to elastomer to be measured, until reaching test fortune
Stop motion after row total period, the mode that preloads are displacement loading method, and preloading movement section is to preload displacement section, in advance
Loading target value is to preload displacement target value, and test loading method is displacement loading method, and test movement section is test position
Shifting movement section.Wherein, test execution mechanism 6 includes that the guide post (figure is not shown) being arranged on testboard and mobile setting exist
Briquetting (figure is not shown) in guide post, the output rod synchronous drive briquetting of servo electric jar moves up and down in guide post to be treated
It surveys elastomer and applies corresponding movement.
Embodiment two: rest part is the same as example 1, the difference is that the mode of preloading is pressure-loaded side
Formula, preloading movement section is pre-loaded pressure section, and preload target value is pre-loaded pressure target value, tests loading method
For pressure-loaded mode, test movement section is that test pressure moves section.
Embodiment three: using the elastomer performance test method of the elastomer performance test equipment of embodiment one, including with
Lower step:
1. -1 by elastomer fixed placement to be measured on testboard, main control module 2 by servo-driven module 3 control servo electricity
The output rod of dynamic cylinder 4 is run with the preloading speed of service set to the preloading initial position of setting；
1. -2 main control modules 2 drive test execution machine according to the output rod that the preloading mode of setting controls servo electric jar 4
Structure 6 is being preloaded to elastomer to be measured application preloading movement in movement section, until reaching the preloading cycle period of setting
Afterwards, the output rod that main control module 2 controls servo electric jar 4 drives test execution mechanism 6 with the preloading speed of service of setting
Operation extremely position corresponding with the preload target value of setting, and using the position as test starting point；
1. -3 servo-driven modules 3 are answered according to Y axis coordinate, each pair of point of each point on the sine wave motion model received
Target velocity along the y axis and the output rod synchronous drive of aimed acceleration control servo electric jar 4 along the y axis survey
It is dynamic to the corresponding test of elastomer to be measured application in the test campaign section of setting since testing starting point to try executing agency 6
Make, until reaching stop motion after test run total period, acquisition module 5 acquires the reality of the output rod of servo electric jar 4 in real time
When pressure information, real-time displacement information and test time-domain information and send supreme position machine 1；
1. -4 host computers are filtered and cut according to the real time pressure information, real-time displacement information and the test time-domain information that receive
It takes, obtains the displacement waveform and pressure waveform in same test time domain, and pass through the data processing script mould of MATLAB tool
Block carries out Hanning window shaping and Fourier transform operation to the displacement on same time domain-pressure waveform curve, obtains elasticity to be measured
Dynamic rate Kd, the angle of lag Phase and test run frequency f1 of body, and obtained by Kd, phase and test run frequency f1
Damped coefficient C, C=Kd × sin (phase × π/180)/(2 × π × f1)；
1. Kd, phase and C compared with the assessment parameter of setting correspond to, are obtained the performance of elastomer to be measured by -5 host computers 1
Test result completes test process.
Wherein, 1. step -4 is during existing conventional elastomers performance test data processing method, detailed process
It is as follows:
The real time pressure information of the output rod for the servo electric jar 4 that host computer acquires reception acquisition module, real-time displacement information
And test time-domain information is parsed, obtained synchronization signal includes three array sequences the same comprising first prime number: when first
Between stab data, first position data and first pressure data, to first time stamp data, first position data and first pressure number
According to carrying out a low-pass filtering treatment, and certain data length is intercepted by the condition of program setting and obtains new data sequence: the
Two time stamp datas, second position data, second pressure data, wherein the second time stamp data is fitted to second position data
The location track curve of the output rod of servo electric jar, the second time stamp data and second pressure data are fitted to servo electric jar
Output rod power output geometric locus, the data processing script module of host computer Calling MATLAB tool carries out into one data
The processing of step, processing step are as follows:
A. the second time stamp data, second position data, second pressure data are subjected to Fourier transformation processing, by time-domain signal
It is converted into frequency-region signal, obtains test motion frequency f1；
B. the second time stamp data, second position data, second pressure data are handled using Hanning window function, obtains pressure wave
Shape and displacement waveform, obtain pressure magnitude F by pressure waveform, obtain displacement amplitude S by displacement waveform, obtain elastomer to be measured
Dynamic rate Kd, Kd=F/S；
C. pressure waveform and displacement waveform are analyzed on same time domain, obtain the phase difference phase between two waveforms, i.e., it is stagnant
Relief angle；
D. pass through damped coefficient C, C=Kd × sin (phase × π/180)/(2 × π × f1) of above-mentioned data acquisition product.
Claims (5)
1. a kind of elastomer performance test equipment, it is characterised in that including being provided with assessment parameter, preloading control parameter and survey
Host computer, main control module, servo-driven module, servo electric jar, test fixture and the acquisition module of control parameter are tried, it is described
Test fixture include testboard for placing elastomer to be measured and for applying stressed mobile be arranged to elastomer to be measured
Test execution mechanism on the testboard, the host computer, which is sent, preloads control parameter and testing and control parameter extremely
The main control module, the main control module parse corresponding preloading control instruction according to control parameter is preloaded
And it is sent to the servo-driven module, the servo-driven module is according to the preloading control instruction control
Servo electric jar output rod synchronous drive described in test execution mechanism to elastomer to be measured apply it is corresponding preload it is dynamic
Make, the main control module is precipitated corresponding testing and control according to testing and control parametric solution and instruct and servo described in being sent to
Drive module, the servo-driven module control the output rod of the servo electric jar according to the testing and control instruction
Test execution mechanism described in synchronous drive applies corresponding test action to elastomer to be measured, and the acquisition module acquires institute
Real time pressure information, real-time displacement information and test time-domain information of the output rod for the servo electric jar stated in test action are simultaneously
It is sent to the host computer, when the host computer is according to real time pressure information, real-time displacement information and the test received
After domain information obtains the performance test value of elastomer to be measured, the performance test value of elastomer to be measured is compared with assessment parameter
Obtain the performance test results of elastomer to be measured.
2. a kind of elastomer performance test equipment according to claim 1, it is characterised in that the preloading control
Instruction includes the preloading speed of service of the output rod of the servo electric jar, preloads mode, preload initial position, is pre-
Load movement section, preload target value and preload cycle period, the described testing and control instruction include test loading method,
Test movement section, test run total period, sine wave amplitude p and target operating frequency f, the main control module are provided with
Electric cam module is provided with sine wave operation analytic modell analytical model, the sine wave fortune in the electric cam control module
Analytic modell analytical model is calculated to be used to establish sine wave fortune in the two-dimensional coordinates for including Y-axis and X-axis according to the testing and control instruction
Movable model, the X-axis are the imaginary axis to travel at the uniform speed always, the speed Vx=360 ° × f to travel at the uniform speed, the sine wave
The Y axis coordinate y of motion model and the X axis coordinate x meet relation function: y=p/2 × sin(x), wherein y indicates servo electricity
The target position numerical value of the output rod of dynamic cylinder, x indicate the position in imaginary axis, and the assignment range of x is 0 ° ~ 360 °, the electricity
Sub- cam control module is used to obtain the Y axis coordinate of each point on the sine wave motion model, Mei Gedian according to the value of x
Corresponding target velocity along the y axis and aimed acceleration along the y axis are simultaneously sent to the servo-driven module, institute
The target speed along the y axis that the servo-driven module stated is used to be answered according to Y axis coordinate, each pair of point of each point received
Test execution machine described in the output rod synchronous drive of the degree servo electric jar described with aimed acceleration control along the y axis
Structure applies corresponding test action to elastomer to be measured, until reaching stop motion after test run total period.
3. a kind of elastomer performance test equipment according to claim 2, it is characterised in that the preloading mode
To be displaced loading method, the preloading campaign section is to preload displacement section, and the preload target value is pre-add
Displacement target value is carried, the test loading method is displacement loading method, and the test campaign section is test displacement fortune
Dynamic section.
4. a kind of elastomer performance test equipment according to claim 2, it is characterised in that the preloading mode
For pressure-loaded mode, the preloading campaign section is pre-loaded pressure section, and the preload target value is pre-add
Pressure target value is carried, the test loading method is pressure-loaded mode, and the test campaign section is test pressure fortune
Dynamic section.
5. using the elastomer performance test method of elastomer performance test equipment as claimed in claim 2, feature exists
In the following steps are included:
1. -1 by elastomer fixed placement to be measured on testboard, main control module controls servo-electric by servo-driven module
The output rod of cylinder is run with the preloading speed of service set to the preloading initial position of setting；
1. -2 main control modules drive test execution mechanism according to the output rod that the preloading mode of setting controls servo electric jar
Preloading movement is applied to elastomer to be measured preloading in movement section, after reaching the preloading cycle period of setting,
Main control module control servo electric jar output rod drive test execution mechanism with the preloading speed of service set run to
Position corresponding with the preload target value of setting, and using the position as test starting point；
1. -3 servo-driven modules are answered according to Y axis coordinate, each pair of point of each point on the sine wave motion model received
Target velocity along the y axis and the output rod synchronous drive of aimed acceleration control servo electric jar along the y axis survey
It tries executing agency and corresponding test action is applied to elastomer to be measured in the test campaign section of setting since testing starting point,
Until reaching stop motion after test run total period, acquisition module acquires the real-time pressure of the output rod of servo electric jar in real time
Information, real-time displacement information and test time-domain information are simultaneously sent to the host computer；
1. -4 host computers are filtered and cut according to the real time pressure information, real-time displacement information and the test time-domain information that receive
It takes, obtains the displacement waveform and pressure waveform in same test time domain, and pass through the data processing script mould of MATLAB tool
Block obtains elasticity to be measured to displacement waveform and pressure waveform progress Hanning window shaping and Fourier transform operation on same time domain
Dynamic rate Kd, the angle of lag Phase and test run frequency f1 of body, and obtained by Kd, phase and test run frequency f1
Damped coefficient C, C=Kd × sin (phase × π/180)/(2 × π × f1)；
1. Kd, phase and C compared with the assessment parameter of setting correspond to, are obtained the performance of elastomer to be measured by -5 host computers
Test result completes test process.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110879141A (en) * | 2019-12-07 | 2020-03-13 | 佛山市鼎科科技发展有限公司 | Damping coefficient test method of variable damper |
| CN111721636A (en) * | 2020-06-30 | 2020-09-29 | 江苏永大化工设备有限公司 | Pressure-bearing equipment pressure-resistant test automatic loading control system |
| CN112061497A (en) * | 2020-09-02 | 2020-12-11 | 西门子（中国）有限公司 | Packagine machine electronic cam curve determining method, packaging machine driving method and packaging machine |
| CN112798633A (en) * | 2020-12-30 | 2021-05-14 | 上海交通大学 | Microscopic testing method for damping performance |
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