CN117433729B - Resistor vibration testing equipment and method - Google Patents
Resistor vibration testing equipment and method Download PDFInfo
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- CN117433729B CN117433729B CN202311724955.7A CN202311724955A CN117433729B CN 117433729 B CN117433729 B CN 117433729B CN 202311724955 A CN202311724955 A CN 202311724955A CN 117433729 B CN117433729 B CN 117433729B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 98
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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- G01M7/04—Monodirectional test stands
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Abstract
The invention relates to the field of vibration testing, in particular to resistor vibration testing equipment and method, comprising the following steps: an equipment base; the test module is used for carrying out vibration test on the resistor; the accuracy monitoring module is used for adjusting the tightening diameter of the outer ring tightening assembly according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times so as to output a first corresponding tightening diameter or trigger a buffer state monitoring control signal; the buffer state monitoring module is used for primarily adjusting the initial vibration frequency of the vibration exciter according to the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base; the vibration state monitoring module is used for adjusting the first corresponding tightening diameter according to the vibration amplitude of the test platform so as to output a second corresponding tightening diameter; and the efficiency monitoring module is used for secondarily adjusting the initial vibration frequency of the vibration exciter. The invention realizes the improvement of the accuracy of the vibration test of the resistor.
Description
Technical Field
The invention relates to the field of vibration testing, in particular to resistor vibration testing equipment and method.
Background
The internal structure of the resistor consists of a ceramic substrate, a lead and a protective layer, the volume and the weight of the resistor are small, the phenomenon that the pin is poor in conduction and even broken possibly occurs due to the influence of equipment vibration in the working process, and in order to avoid the phenomenon that the resistor is poor and electrical equipment is damaged, vibration simulation test is necessarily carried out on the resistor before the resistor leaves a factory, wherein the vibration test is mainly environment simulation, and the test parameters are a frequency range, a vibration amplitude and a test duration. The influence of vibration on the product is as follows: structural damage, such as structural deformation, product cracking or breaking; the product has the defects of functional failure or poor performance, such as poor contact, relay misoperation and the like, and the damage is not permanent damage, because the work can be recovered to be normal once the vibration is reduced or stopped; and (3) the process damage such as loosening of screws or connecting pieces and desoldering. The accuracy of the resistor vibration test is low due to the fact that the vibration amplitude of the existing resistor vibration test equipment is unstable.
Chinese patent publication No.: CN216207400U discloses a resistor vibration tester for vibrating a resistor, which includes a body and two pin pieces provided at both ends of the body. The resistor vibration tester includes: frame, laboratory bench, elastic connection spare, at least one layering and vibrating unit, the frame with the laboratory bench passes through elastic connection spare is connected, the laboratory bench is used for bearing the resistor, the layering be used for with laboratory bench detachably connects and compresses tightly the pin piece of resistor, vibrating unit set up in the frame. This patent document can carry out vibration test to the resistor before leaving the factory, is favorable to improving the detection rate of defective products. It can be seen that the resistor vibration tester has a problem of a decrease in accuracy of the resistor vibration test due to degradation of vibration transmission effectiveness caused by aging of the buffer structure and long-time vibration.
Disclosure of Invention
Therefore, the invention provides a resistor vibration testing device and a method thereof, which are used for solving the problem of the prior art that the accuracy of the resistor vibration test is reduced due to the degradation of vibration transmission effectiveness caused by the aging of a buffer structure and long-time vibration.
To achieve the above object, the present invention provides a resistor vibration testing apparatus comprising: an equipment base; the testing module is connected with the equipment base and used for carrying out vibration testing on the resistor and comprises a vibration exciter used for generating vibration force, a connecting component connected with the vibration exciter and used for transmitting the vibration force to a corresponding position to be tested, a testing platform arranged above the connecting component and used for fixing the resistor, a buffer component connected with the testing platform and used for weakening kinetic energy of the testing platform, and an outer ring tightening component connected with the testing platform and used for relatively fixing the space position of the connecting component; the accuracy monitoring module is connected with the testing module and is used for adjusting the tightening diameter of the outer ring tightening assembly to output a first corresponding tightening diameter or triggering a buffer state monitoring control signal when the vibration testing process is in a detection error state according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times; the buffer state monitoring module is respectively connected with the equipment base, the testing module and the accuracy monitoring module and is used for initially adjusting the initial vibration frequency of the vibration exciter when responding to the buffer state monitoring control signal and judging that the buffer assembly is in a buffer abnormal state according to the difference between the vibration amplitude of the testing platform and the vibration amplitude of the equipment base; the vibration state monitoring module is connected with the accuracy monitoring module and is used for adjusting the first corresponding tightening diameter to output a second corresponding tightening diameter when the vibration force transmission process is in a transmission abnormal state according to the vibration amplitude of the test platform; the efficiency monitoring module is connected with the buffer state monitoring module and is used for carrying out secondary adjustment on the initial vibration frequency of the vibration exciter when the buffer state monitoring module completes primary adjustment on the initial vibration frequency and judges that the vibration testing process is in an abnormal efficiency state according to the average testing duration of the resistor.
Further, the accuracy monitoring module includes:
the resistance value measuring assembly is arranged at the output end of the testing module and used for respectively detecting the actual resistance values of the resistors which are output by repeated vibration tests for a plurality of times;
the first judging component is connected with the resistance value measuring component and is used for calculating the variance of the actual resistance value of the resistor for repeated vibration tests according to a plurality of detection results of the actual resistance value and judging that the vibration test process is in the detection error state when the calculation result of the variance triggers a preset first variance condition or triggers a preset second variance condition; the detection error state is that the accuracy of the vibration test is lower than the allowable range;
the first adjusting component is connected with the first judging component and is used for adjusting the tightening diameter of the outer ring tightening component according to the difference value between the variance of the actual resistance value of the resistor tested by repeated vibration and the preset second variance when the variance of the actual resistance value of the resistor tested by repeated vibration is used for triggering the preset second variance condition independently for several times so as to output a first corresponding tightening diameter.
Further, the preset first variance condition is that the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance condition is that the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
Further, the buffer status monitoring module includes:
the first vibration sensor is connected with the test platform and used for detecting the vibration amplitude of the test platform;
the second vibration sensor is connected with the equipment base and is used for detecting the vibration amplitude of the equipment base;
the second judging component is respectively connected with the first vibration sensor and the second vibration sensor and is used for judging that the buffer component is in a buffer abnormal state when the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base triggers a preset difference condition;
the abnormal buffer state is that the buffer effectiveness of the buffer component is lower than the allowable range, and the preset difference condition is that the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base is smaller than the preset difference.
Further, the buffer status monitoring module further comprises a second adjusting component connected with the second judging component, and the second adjusting component is used for adjusting and reducing the vibration frequency of the initial starting according to the difference value between the preset difference value and the difference value between the vibration amplitude of the test platform and the vibration amplitude of the equipment base.
Further, the vibration state monitoring module includes:
The third judging component is connected with the first vibration sensor and is used for acquiring the vibration amplitude of the test platform when the buffer state monitoring module outputs a first corresponding tightening diameter and judging that the vibration force transmission process is in a transmission abnormal state when the vibration amplitude of the test platform triggers a preset vibration amplitude condition;
wherein the abnormal state of transmission is that the effectiveness of vibration force transmission is lower than the allowable range; the preset vibration amplitude condition is that the vibration amplitude of the test platform is smaller than the preset vibration amplitude.
Further, the vibration state monitoring module further comprises a third adjusting component connected with the third judging component, and the third adjusting component is used for adjusting the first corresponding tightening diameter according to the difference value between the preset vibration amplitude and the vibration amplitude of the test platform so as to output a second corresponding tightening diameter.
Further, the efficiency monitoring module comprises a statistics component connected with the testing module and a fourth judging component connected with the statistics component, wherein,
the statistics component is used for counting the total test duration of the resistors when the initial adjustment of the initial starting vibration frequency is completed, and calculating the average test duration of the resistors according to the counting result;
The fourth judging component is used for judging that the vibration testing process is in an abnormal efficiency state when the average testing time of the resistor triggers a preset testing time condition;
the efficiency abnormal state is that the vibration test efficiency is lower than the allowable range; the preset test duration condition is that the average test duration of the resistor is longer than the preset test duration.
Further, the efficiency monitoring module further comprises a fourth adjusting component connected with the fourth judging component and used for secondarily adjusting the vibration frequency of the initial starting according to the difference value between the average test duration and the preset test duration of the resistor;
wherein the regulation trend of the secondary regulation process for the initially started vibration frequency is rising.
The invention also provides a resistor vibration testing method, which comprises the following steps:
step S1, placing a plurality of resistors at corresponding test positions on a test platform, and starting a vibration exciter by a test module according to the vibration frequency initially set by equipment so as to perform vibration test on the plurality of resistors;
step S2, when the testing module performs vibration testing on a plurality of resistors, the accuracy monitoring module controls the first vibration sensor and the second vibration sensor to respectively detect the vibration amplitude of the testing platform and the vibration amplitude of the equipment base in real time;
Step S3, when the accuracy monitoring module judges that the vibration testing process is in a detection error state according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times, the tightening diameter of the outer ring tightening assembly is adjusted to output a first corresponding tightening diameter, or a buffer state monitoring control signal is triggered;
step S4, the buffer state monitoring module is used for carrying out primary adjustment on the initial vibration frequency of the vibration exciter when responding to the buffer state monitoring control signal and judging that the buffer assembly is in a buffer abnormal state according to the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base;
step S5, when the accuracy monitoring module outputs a first corresponding tightening diameter, the vibration state monitoring module adjusts the first corresponding tightening diameter according to the vibration amplitude of the test platform so as to output a second corresponding tightening diameter;
and S6, when the buffer state monitoring module completes primary adjustment of the vibration exciter, the efficiency monitoring module secondarily adjusts the initial vibration frequency of the vibration exciter when judging that the vibration testing process is in an abnormal efficiency state according to the average testing duration of the resistor.
Compared with the prior art, the testing equipment has the beneficial effects that by arranging the equipment base, the testing module, the accuracy monitoring module, the buffer state monitoring module, the vibration state monitoring module and the efficiency monitoring module, the impact on the accuracy of vibration testing caused by inaccurate judgment on the detection error state and inaccurate adjustment on the tightening diameter is reduced by adjusting the tightening diameter of the outer ring tightening assembly to output the first corresponding tightening diameter or triggering the buffer state monitoring control signal when the vibration testing process is in the detection error state according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times; the initial vibration frequency of the vibration exciter is adjusted for the first time when the buffer assembly is in a buffer abnormal state according to the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base, so that the influence on the buffer effectiveness due to inaccurate adjustment of the initial vibration frequency is reduced; the first corresponding tightening diameter is adjusted to output the second corresponding tightening diameter when the vibration force transmission process is in the abnormal transmission state according to the vibration amplitude of the test platform, so that the influence on the effectiveness of the vibration test due to inaccurate judgment on the abnormal vibration force transmission state is reduced; an improvement in test accuracy for the resistor vibration test is achieved.
Further, the testing equipment of the invention sets the preset first variance and the preset second variance, and adjusts the tightening diameter of the outer ring tightening assembly according to the difference value between the variance of the actual resistance value of the resistor and the preset second variance to output the first corresponding tightening diameter when the preset second variance condition is triggered independently, thereby reducing the influence of insufficient connection stability of the vibration exciter and the testing platform on the accuracy of the vibration test and further realizing the improvement of the test accuracy of the vibration test of the resistor.
Further, the test equipment of the invention sets the preset difference, and judges that the buffer assembly is in a buffer abnormal state and adjusts the initial starting vibration frequency when the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base triggers the preset difference condition, thereby reducing the influence on the buffer effect caused by inaccurate adjustment of the initial starting vibration frequency and further realizing the improvement of the test accuracy of the resistor vibration test.
Further, the testing equipment of the invention sets the preset vibration amplitude, judges the transmission effectiveness of the vibration force, and secondarily adjusts the first corresponding tightening diameter according to the vibration amplitude, thereby reducing the influence of insufficient transmission effectiveness of the vibration force on the accuracy of the vibration test and further realizing the improvement of the test accuracy of the vibration test of the resistor.
Further, the test equipment of the invention sets the preset test duration, judges the efficiency of the vibration test, and secondarily adjusts the vibration frequency of the initial start according to the average test duration, thereby reducing the influence on the test efficiency caused by the excessively small initial start frequency and further realizing the improvement of the test accuracy of the vibration test of the resistor.
Furthermore, the testing equipment improves the connection stability of the vibration exciter and the platform by arranging the outer ring tightening assembly, reduces the influence of the connection stability of the vibration exciter and the platform on the detection accuracy, and further improves the detection accuracy of the resistor vibration test.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a resistor vibration testing apparatus according to an embodiment of the present invention;
FIG. 2 is a block diagram showing the overall structure of a resistor vibration test apparatus according to an embodiment of the present invention;
FIG. 3 is a block diagram showing a specific structure of a test module of a resistor vibration test apparatus according to an embodiment of the present invention;
FIG. 4 is an overall flow chart of a method for testing vibration of a resistor according to an embodiment of the invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Fig. 1, fig. 2, fig. 3, and fig. 4 show an overall schematic diagram of a resistor vibration testing apparatus, an overall block diagram, a specific block diagram of a testing module, and an overall flowchart of a resistor vibration testing method according to an embodiment of the invention. The invention relates to a resistor vibration testing device, comprising:
a device base 8;
The testing module is connected with the equipment base 8 and used for carrying out vibration testing on the resistor, and comprises a vibration exciter 9 used for generating vibration force, a connecting component connected with the vibration exciter 9 and used for transmitting the vibration force to a corresponding position to be tested, a testing platform 1 arranged above the connecting component and used for fixing the resistor, a buffer component connected with the testing platform 1 and used for weakening kinetic energy of the testing platform 1, and an outer ring tightening component connected with the testing platform 1 and used for relatively fixing the space position of the connecting component;
the accuracy monitoring module is connected with the testing module and is used for adjusting the tightening diameter of the outer ring tightening assembly to output a first corresponding tightening diameter or triggering a buffer state monitoring control signal when the vibration testing process is in a detection error state according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times;
the buffer state monitoring module is respectively connected with the equipment base 8, the testing module and the accuracy monitoring module and is used for initially adjusting the initial vibration frequency of the vibration exciter 9 when responding to the buffer state monitoring control signal and judging that the buffer assembly is in a buffer abnormal state according to the difference between the vibration amplitude of the testing platform and the vibration amplitude of the equipment base 8;
The vibration state monitoring module is connected with the accuracy monitoring module and is used for adjusting the first corresponding tightening diameter to output a second corresponding tightening diameter when the vibration force transmission process is in a transmission abnormal state according to the vibration amplitude of the test platform;
the efficiency monitoring module is connected with the buffer state monitoring module and is used for carrying out secondary adjustment on the initial vibration frequency of the vibration exciter 9 when the buffer state monitoring module completes primary adjustment on the initial vibration frequency and judges that the vibration testing process is in an abnormal efficiency state according to the average testing duration of the resistor.
Specifically, the test platform 1 is provided with a telescopic clamp 6 for relatively fixing the test position of the resistor.
Specifically, the connecting component comprises a primary ejector rod 4 connected with the vibration exciter 9 and a secondary ejector rod 3 connected with the primary ejector rod 4 for enhancing the vibration effect; the diameter of the secondary ejector rod 3 is smaller than that of the primary ejector rod 4.
Specifically, the buffer assembly comprises a buffer spring 12 used for weakening the vibration buffering energy of the test platform 1 and a guide post 11 connected with the equipment base 8 and used for restraining the vibration direction of the buffer spring, and the outer ring tightening assembly is a connecting rod 5 connected with the test platform 1 and an electric telescopic ring 7 connected with the connecting rod 5.
Specifically, the relative fixing method of the outer ring tightening assembly to the connecting assembly is as follows: when the accuracy monitoring module judges that the vibration testing process is in a detection error state and the variance of the actual resistance value of the resistor for repeated vibration testing for a plurality of times triggers a preset second variance condition independently, the diameter of the electric telescopic ring is reduced to enable the first-stage ejector rod to be in contact with the inner surface of the electric telescopic ring, so that the horizontal vibration range and the vibration intensity of the first-stage ejector rod are reduced.
Specifically, the essence of the relative fixation of the outer ring tightening assembly to the connecting assembly is that the electric telescopic ring limits the movable range of the primary ejector rod in the horizontal direction.
Specifically, the tightening diameter of the outer ring tightening assembly is the diameter of the electric telescopic ring.
Specifically, the diameter of the electric telescopic ring is larger than that of the primary push rod.
According to the testing equipment, the outer ring tightening assembly is arranged, so that the connection stability of the vibration exciter 9 and the platform is improved, the influence of the connection stability of the vibration exciter 9 and the platform on the detection accuracy is reduced, and the improvement of the detection accuracy of the resistor vibration test is further realized.
Specifically, the variance of the actual resistance values of the resistors tested by the repeated vibration tests is the actual resistance values of the resistors measured by the resistance value measuring component of the output resistors tested by the repeated vibration tests, and the calculation method of the variance of the actual resistance values of the resistors tested by the repeated vibration tests is a conventional technical means well known to those skilled in the art, so that the calculation process of the variance of the actual resistance values of the resistors tested by the repeated vibration tests is not repeated here.
According to the testing equipment, the equipment base 8, the testing module, the accuracy monitoring module, the buffer state monitoring module, the vibration state monitoring module and the efficiency monitoring module are arranged, and when the vibration testing process is in the detection error state according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times, the tightening diameter of the outer ring tightening assembly is adjusted to output a first corresponding tightening diameter, or the buffer state monitoring control signal is triggered, so that the influence on the accuracy of the vibration testing due to inaccurate judgment on the detection error state and inaccurate adjustment on the tightening diameter is reduced; the initial vibration frequency of the vibration exciter 9 is adjusted for the first time when the buffer assembly is in a buffer abnormal state according to the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base 8, so that the influence on the buffer effectiveness due to inaccurate adjustment of the initial vibration frequency is reduced; the first corresponding tightening diameter is adjusted to output the second corresponding tightening diameter when the vibration force transmission process is in the abnormal transmission state according to the vibration amplitude of the test platform, so that the influence on the effectiveness of the vibration test due to inaccurate judgment on the abnormal vibration force transmission state is reduced; an improvement in test accuracy for the resistor vibration test is achieved.
With continued reference to fig. 2, the accuracy monitoring module includes:
the resistance value measuring assembly is arranged at the output end of the testing module and used for respectively detecting the actual resistance values of the resistors which are output by repeated vibration tests for a plurality of times;
the first judging component is connected with the resistance value measuring component and is used for calculating the variance of the actual resistance value of the resistor for repeated vibration tests according to a plurality of detection results of the actual resistance value and judging that the vibration test process is in the detection error state when the calculation result of the variance triggers a preset first variance condition or triggers a preset second variance condition; the detection error state is that the accuracy of the vibration test is lower than the allowable range;
the first adjusting component is connected with the first judging component and is used for adjusting the tightening diameter of the outer ring tightening component according to the difference value between the variance of the actual resistance value of the resistor tested by repeated vibration and the preset second variance when the variance of the actual resistance value of the resistor tested by repeated vibration is used for triggering the preset second variance condition independently for several times so as to output a first corresponding tightening diameter.
In particular, the resistance measuring component may be a resistance meter, a multimeter or a resistance tester.
With continued reference to fig. 1, the preset first variance condition is that the variance of the actual resistance values of the resistors repeatedly tested for several times is greater than the preset first variance and less than or equal to the preset second variance; the preset second variance condition is that the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
Specifically, the first adjusting component adjusts the tightening diameter of the outer ring tightening component to a first tightening diameter by using a preset second diameter adjusting coefficient under the condition of a preset first difference value;
the first adjusting component adjusts the tightening diameter of the outer ring tightening component to a second tightening diameter by using a preset first diameter adjusting coefficient under the condition of a preset second variance difference value;
the preset first variance difference condition is that the variance of the actual resistance value of the resistor subjected to repeated vibration tests for a plurality of times is smaller than or equal to the preset variance difference value; the preset second variance difference condition is that the difference between the variance of the actual resistance value of the resistor subjected to repeated vibration tests for a plurality of times and the preset second variance is larger than the preset variance difference; the preset first diameter adjustment coefficient is smaller than the preset second diameter adjustment coefficient.
Specifically, the first corresponding pull-up diameter includes a first pull-up diameter and a second pull-up diameter.
Specifically, the variance of the actual resistance value of the resistor for several times of repeated vibration is denoted as C, the preset first variance is denoted as C1, the preset second variance is denoted as C2, the variance of the actual resistance value of the resistor for several times of repeated vibration test is denoted as Δc, the preset variance difference is denoted as Δc0, Δc=c-C2 is set, the preset first diameter adjustment coefficient is denoted as η1, the preset second diameter adjustment coefficient is denoted as η2, the tightening diameter of the outer ring tightening assembly is denoted as D, wherein 0 < η1 < η2 < 1, C1 < C2, the first corresponding tightening diameter is denoted as D' =d×η i ，η i For presetting the i-th diameter adjustment coefficient, i=1, 2 is set.
According to the testing equipment, the preset first variance and the preset second variance are set, when the preset second variance condition is triggered independently, the tightening diameter of the outer ring tightening assembly is reduced according to the difference value between the variance of the actual resistance value of the resistor tested through repeated vibration for a plurality of times and the preset second variance to output the first corresponding tightening diameter, so that the influence of insufficient connection stability of the vibration exciter 9 and the testing platform 1 on the accuracy of vibration testing is reduced, and the improvement of the testing accuracy of the vibration testing of the resistor is further realized.
With continued reference to fig. 2, the buffer status monitoring module includes:
the first vibration sensor 2 is connected with the test platform 1 and is used for detecting the vibration amplitude of the test platform;
a second vibration sensor 10 connected to the device base 8 for detecting a vibration amplitude of the device base 8;
the second judging component is respectively connected with the first vibration sensor 2 and the second vibration sensor and is used for judging that the buffer component is in a buffer abnormal state when the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base 8 triggers a preset difference condition;
the abnormal buffer state is that the buffer effectiveness of the buffer component is lower than the allowable range, and the preset difference condition is that the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base 8 is smaller than the preset difference.
With continued reference to fig. 2, the buffer status monitoring module further includes a second adjusting component connected to the second determining component, for adjusting the initial starting vibration frequency according to a difference between a preset difference and a difference between the vibration amplitude of the test platform and the vibration amplitude of the device base 8.
Specifically, the second adjusting component adjusts the vibration frequency of the initial start to a first frequency by using a preset second frequency adjusting coefficient under the condition of presetting a first difference value;
the second adjusting component adjusts the vibration frequency of initial starting to a second frequency by using a preset first frequency adjusting coefficient under the condition of presetting a second difference value;
the preset first difference value condition is that the difference value of the preset difference value and the difference value of the vibration amplitude of the test platform and the vibration amplitude of the equipment base 8 is smaller than or equal to the preset difference value; the preset second difference value condition is that the difference value of the preset difference value and the difference value of the vibration amplitude of the test platform and the vibration amplitude of the equipment base 8 is larger than the preset difference value; the preset first frequency adjustment coefficient is smaller than the preset second frequency adjustment coefficient.
Specifically, the difference between the vibration amplitude of the test platform and the vibration amplitude of the device base 8 is denoted as M, the preset difference is denoted as M0, the difference between the preset difference and the vibration amplitude of the test platform and the vibration amplitude of the device base 8 is denoted as Δm, the preset difference is denoted as Δm0, Δm=m0-M is set, the preset first frequency adjustment coefficient is denoted as α1, the preset second frequency adjustment coefficient is denoted as α2, wherein 0 < α1 < α2 < 1, the vibration frequency of the initial start is denoted as E, the vibration frequency of the initial start after adjustment is denoted as E ', E' =e× (1+αk)/2 is set, wherein αk is the preset kth frequency adjustment coefficient, and k=1, 2 is set.
Specifically, a calculation formula of the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base 8 is:
，
wherein M is the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base 8, F is the vibration amplitude of the test platform, and Fa is the vibration amplitude of the equipment base 8.
According to the testing equipment, the preset difference quantity is set, and the buffer component is judged to be in the abnormal buffer state and the initial starting vibration frequency is regulated when the difference quantity between the vibration amplitude of the testing platform and the vibration amplitude of the equipment base 8 triggers the preset difference quantity condition, so that the influence on the buffer effect caused by inaccurate regulation of the initial starting vibration frequency is reduced, and the improvement of the testing accuracy of the resistor vibration test is further realized.
With continued reference to fig. 2, the vibration state monitoring module includes:
the third judging component is connected with the first vibration sensor 2 and is used for acquiring the vibration amplitude of the test platform when the buffer state monitoring module outputs a first corresponding tightening diameter and judging that the vibration force transmission process is in a transmission abnormal state when the vibration amplitude of the test platform triggers a preset vibration amplitude condition;
Wherein the abnormal state of transmission is that the effectiveness of vibration force transmission is lower than the allowable range; the preset vibration amplitude condition is that the vibration amplitude of the test platform is smaller than the preset vibration amplitude.
With continued reference to fig. 2, the vibration state monitoring module further includes a third adjusting component connected to the third determining component, and configured to adjust the first corresponding tightening diameter according to a difference between a preset vibration amplitude and a vibration amplitude of the test platform, so as to output a second corresponding tightening diameter.
Specifically, the second corresponding set of tight diameters includes a third set of tight diameters and a fourth set of tight diameters.
Specifically, the third adjusting component adjusts the tightening diameter of the outer ring tightening component to a third tightening diameter by using a third diameter adjusting coefficient under the condition of presetting a first vibration amplitude difference value;
the third adjusting component adjusts the tightening diameter of the outer ring tightening component to a fourth tightening diameter by using a fourth diameter adjusting coefficient under the condition of presetting a second vibration amplitude difference value;
the preset first vibration amplitude difference value condition is that the difference value between the preset vibration amplitude and the vibration amplitude of the test platform is smaller than or equal to the preset vibration amplitude difference value; the preset second vibration amplitude difference value condition is that the difference value between the preset vibration amplitude and the vibration amplitude of the test platform is larger than the preset vibration amplitude difference value; the preset third diameter adjustment coefficient is smaller than the preset fourth diameter adjustment coefficient.
Specifically, the vibration amplitude of the test platform is denoted as F, the preset vibration amplitude is denoted as F0, the difference between the preset vibration amplitude and the vibration amplitude of the test platform is denoted as Δf, Δf=f0-F is set, the preset vibration amplitude difference is denoted as Δf0, the preset third diameter adjustment coefficient is denoted as η3, the preset fourth diameter adjustment coefficient is denoted as η4, wherein 1 < η3 < η4, the second corresponding tightening diameter is D "=d' ×ηj, wherein ηj is a preset j-th diameter adjustment coefficient, and j=3, 4 is set.
According to the testing equipment, the preset vibration amplitude is set, the transmission effectiveness of the vibration force is judged, and the second adjustment is carried out on the first corresponding tightening diameter according to the vibration amplitude, so that the influence of insufficient transmission effectiveness of the vibration force on the accuracy of the vibration test is reduced, and the improvement of the test accuracy of the resistor vibration test is further realized.
With continued reference to fig. 2, the efficiency monitoring module includes a statistics component coupled to a testing module and a fourth decision component coupled to the statistics component, wherein,
the statistics component is used for counting the total test duration of the resistors when the initial adjustment of the initial starting vibration frequency is completed, and calculating the average test duration of the resistors according to the counting result;
The fourth judging component is used for judging that the vibration testing process is in an abnormal efficiency state when the average testing time of the resistor triggers a preset testing time condition;
the efficiency abnormal state is that the vibration test efficiency is lower than the allowable range; the preset test duration condition is that the average test duration of the resistor is longer than the preset test duration.
With continued reference to fig. 2, the efficiency monitoring module further includes a fourth adjusting component connected to the fourth determining component, for performing a secondary adjustment on the vibration frequency of the initial start-up according to a difference between the average test duration and the preset test duration of the resistor;
wherein the regulation trend of the secondary regulation process for the initially started vibration frequency is rising.
Specifically, the fourth adjusting component adjusts the vibration frequency of the initial start to a third frequency by using a preset third frequency adjusting coefficient under the condition of presetting a first test duration difference value;
the fourth adjusting component adjusts the vibration frequency of the initial start to a fourth frequency by using a preset fourth frequency adjusting coefficient under the condition of presetting a second test duration difference value;
the difference value condition of the preset first test duration is that the difference value between the average test duration and the preset test duration of the resistor is smaller than or equal to the difference value of the preset test duration; the difference value condition of the preset second test duration is that the difference value between the average test duration and the preset test duration of the resistor is larger than the difference value of the preset test duration; the preset third frequency adjustment coefficient is smaller than the preset fourth frequency adjustment coefficient.
Specifically, the average test duration of the resistor is denoted as R, the preset test duration is denoted as R0, the difference between the average test duration and the preset test duration of the resistor is denoted as Δr, Δr=r-RO is set, the preset third frequency adjustment coefficient is denoted as α3, the preset fourth frequency adjustment coefficient is denoted as α4, wherein 1 < α3 < α4, the vibration frequency of the initial start after the secondary adjustment is denoted as E ", E" =e' × (1+αγ)/2 is set, αγ is the preset γ frequency adjustment coefficient, and γ=3, 4 is set.
Specifically, the calculation formula of the average test duration of the resistor is:
，
wherein R is the average test duration of the resistor, R h For the test duration of the h-th resistor, c is the total number of resistors, and c is a natural number of 1 or more.
According to the testing equipment, the preset testing duration is set, the efficiency of the vibration test is judged, the vibration frequency which is started initially is regulated secondarily according to the average testing duration, the influence on the testing efficiency due to the fact that the initial starting frequency is too small is reduced, and the improvement of the testing accuracy of the vibration test of the resistor is further achieved.
With continued reference to fig. 4, a method for testing vibration of a resistor according to the present invention includes:
Step S1, putting a plurality of resistors into corresponding test positions on a test platform 1, and starting a vibration exciter 9 by a test module according to the vibration frequency initially set by equipment so as to perform vibration test on the plurality of resistors;
step S2, when the testing module performs vibration testing on a plurality of resistors, the accuracy monitoring module controls the first vibration sensor 2 and the second vibration sensor 10 to respectively detect the vibration amplitude of the testing platform and the vibration amplitude of the equipment base 8 in real time;
step S3, when the accuracy monitoring module judges that the vibration testing process is in a detection error state according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times, the tightening diameter of the outer ring tightening assembly is adjusted to output a first corresponding tightening diameter, or a buffer state monitoring control signal is triggered;
step S4, when the buffer state monitoring module responds to the buffer state monitoring control signal and judges that the buffer assembly is in a buffer abnormal state according to the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base 8, the buffer state monitoring module carries out primary adjustment on the initial vibration frequency of the vibration exciter 9;
step S5, when the accuracy monitoring module outputs a first corresponding tightening diameter, the vibration state monitoring module adjusts the first corresponding tightening diameter according to the vibration amplitude of the test platform so as to output a second corresponding tightening diameter;
And S6, when the buffer state monitoring module completes primary adjustment of the vibration exciter 9, the efficiency monitoring module carries out secondary adjustment on the initial vibration frequency of the vibration exciter 9 when judging that the vibration testing process is in an abnormal efficiency state according to the average testing duration of the resistor.
Example 1
In this embodiment 1, when C triggers C > C2 independently, the first adjusting component adjusts the tightening diameter D of the outer ring tightening component according to the difference Δc between the variance of the actual resistance values of the resistors tested by repeated vibration and the preset second variance to output the first corresponding tightening diameter. The variance of the actual resistance value of the resistor for a number of repeated vibration times is denoted as C, the preset first variance is denoted as C1, the preset second variance is denoted as C2, the difference between the variance of the actual resistance value of the resistor for a number of repeated vibration tests and the preset second variance is denoted as DeltaC, the preset variance difference is denoted as DeltaC 0, deltaC=C-C2 is set, the preset first diameter adjustment coefficient is denoted as eta 1, and the preset second diameter adjustment coefficient is denoted as DeltaCDenoted η2, the pull-up diameter of the outer loop pull-up assembly is denoted D, c1=8Ω 2 ，C2=12Ω 2 ，η1=0.92，η2=0.96，△C0=1.1Ω 2 D=0.6m, c=13Ω in this example 1 2 ，
Δc=13Ω in this example 1 2 -12Ω 2 =1Ω 2 The first adjusting component determines Δc < Δc0and adjusts the pull-up diameter of the outer ring pull-up component to the first pull-up diameter D 'using a preset second diameter adjustment coefficient η2, calculating D' =0.6m×0.96=0.576 m.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (3)
1. A resistor vibration testing apparatus, comprising:
an equipment base;
the testing module is connected with the equipment base and used for carrying out vibration testing on the resistor and comprises a vibration exciter used for generating vibration force, a connecting component connected with the vibration exciter and used for transmitting the vibration force to a corresponding position to be tested, a testing platform arranged above the connecting component and used for fixing the resistor, a buffer component connected with the testing platform and used for weakening kinetic energy of the testing platform, and an outer ring tightening component connected with the testing platform and used for relatively fixing the space position of the connecting component;
the accuracy monitoring module is connected with the testing module and is used for adjusting the tightening diameter of the outer ring tightening assembly to output a first corresponding tightening diameter or triggering a buffer state monitoring control signal when the vibration testing process is in a detection error state according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times;
The buffer state monitoring module is respectively connected with the equipment base, the testing module and the accuracy monitoring module and is used for initially adjusting the initial vibration frequency of the vibration exciter when responding to the buffer state monitoring control signal and judging that the buffer assembly is in a buffer abnormal state according to the difference between the vibration amplitude of the testing platform and the vibration amplitude of the equipment base;
the vibration state monitoring module is connected with the accuracy monitoring module and is used for adjusting the first corresponding tightening diameter to output a second corresponding tightening diameter when the vibration force transmission process is in a transmission abnormal state according to the vibration amplitude of the test platform;
the efficiency monitoring module is connected with the buffer state monitoring module and is used for carrying out secondary adjustment on the initial vibration frequency of the vibration exciter when the buffer state monitoring module completes primary adjustment on the initial vibration frequency and judges that the vibration testing process is in an abnormal efficiency state according to the average testing duration of the resistor;
the accuracy monitoring module comprises:
the resistance value measuring assembly is arranged at the output end of the testing module and used for respectively detecting the actual resistance values of the resistors which are output by repeated vibration tests for a plurality of times;
The first judging component is connected with the resistance value measuring component and is used for calculating the variance of the actual resistance value of the resistor for repeated vibration tests according to a plurality of detection results of the actual resistance value and judging that the vibration test process is in the detection error state when the calculation result of the variance triggers a preset first variance condition or triggers a preset second variance condition; the detection error state is that the accuracy of the vibration test is lower than the allowable range;
the first adjusting component is connected with the first judging component and is used for adjusting the tightening diameter of the outer ring tightening component according to the difference value between the variance of the actual resistance value of the resistor tested by repeated vibration and the preset second variance when the variance of the actual resistance value of the resistor tested by repeated vibration is used for triggering the preset second variance condition independently for several times so as to output a first corresponding tightening diameter;
the buffer status monitoring module includes:
the first vibration sensor is connected with the test platform and used for detecting the vibration amplitude of the test platform;
the second vibration sensor is connected with the equipment base and is used for detecting the vibration amplitude of the equipment base;
The second judging component is respectively connected with the first vibration sensor and the second vibration sensor and is used for judging that the buffer component is in a buffer abnormal state when the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base triggers a preset difference condition;
the buffer abnormal state is that the buffer effectiveness of the buffer component is lower than an allowable range, and the preset difference condition is that the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base is smaller than the preset difference;
the buffer state monitoring module further comprises a second adjusting component connected with the second judging component and used for adjusting and reducing the initial starting vibration frequency according to the difference value of the preset difference value and the difference value of the vibration amplitude of the test platform and the vibration amplitude of the equipment base;
the vibration state monitoring module includes:
the third judging component is connected with the first vibration sensor and is used for acquiring the vibration amplitude of the test platform when the buffer state monitoring module outputs a first corresponding tightening diameter and judging that the vibration force transmission process is in a transmission abnormal state when the vibration amplitude of the test platform triggers a preset vibration amplitude condition;
Wherein the abnormal state of transmission is that the effectiveness of vibration force transmission is lower than the allowable range; the preset vibration amplitude condition is that the vibration amplitude of the test platform is smaller than the preset vibration amplitude;
the vibration state monitoring module further comprises a third adjusting component connected with the third judging component and used for adjusting and lifting the first corresponding tightening diameter according to the difference value between the preset vibration amplitude and the vibration amplitude of the test platform so as to output a second corresponding tightening diameter;
the efficiency monitoring module comprises a statistics component connected with the testing module and a fourth judging component connected with the statistics component, wherein,
the statistics component is used for counting the total test duration of the resistors when the initial adjustment of the initial starting vibration frequency is completed, and calculating the average test duration of the resistors according to the counting result;
the fourth judging component is used for judging that the vibration testing process is in an abnormal efficiency state when the average testing time of the resistor triggers a preset testing time condition;
the efficiency abnormal state is that the vibration test efficiency is lower than the allowable range; the preset test duration condition is that the average test duration of the resistor is longer than the preset test duration;
The efficiency monitoring module further comprises a fourth adjusting component connected with the fourth judging component and used for secondarily adjusting the vibration frequency of the initial starting according to the difference value between the average test duration and the preset test duration of the resistor;
wherein the regulation trend of the secondary regulation process for the initially started vibration frequency is rising.
2. The resistor vibration testing apparatus according to claim 1, wherein the preset first variance condition is that a variance of an actual resistance value of the resistor for a plurality of repeated tests is greater than a preset first variance and less than or equal to a preset second variance; the preset second variance condition is that the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
3. A detection method applied to the resistor vibration test apparatus according to any one of claims 1 to 2, comprising:
step S1, placing a plurality of resistors at corresponding test positions on a test platform, and starting a vibration exciter by a test module according to the vibration frequency initially set by equipment so as to perform vibration test on the plurality of resistors;
Step S2, when the testing module performs vibration testing on a plurality of resistors, the accuracy monitoring module controls the first vibration sensor and the second vibration sensor to respectively detect the vibration amplitude of the testing platform and the vibration amplitude of the equipment base in real time;
step S3, when the accuracy monitoring module judges that the vibration testing process is in a detection error state according to the variance of the actual resistance value of the resistor repeatedly tested for a plurality of times, the tightening diameter of the outer ring tightening assembly is adjusted to output a first corresponding tightening diameter, or a buffer state monitoring control signal is triggered;
step S4, the buffer state monitoring module is used for carrying out primary adjustment on the initial vibration frequency of the vibration exciter when responding to the buffer state monitoring control signal and judging that the buffer assembly is in a buffer abnormal state according to the difference between the vibration amplitude of the test platform and the vibration amplitude of the equipment base;
step S5, when the accuracy monitoring module outputs a first corresponding tightening diameter, the vibration state monitoring module adjusts the first corresponding tightening diameter according to the vibration amplitude of the test platform so as to output a second corresponding tightening diameter;
and S6, when the buffer state monitoring module completes primary adjustment of the vibration exciter, the efficiency monitoring module secondarily adjusts the initial vibration frequency of the vibration exciter when judging that the vibration testing process is in an abnormal efficiency state according to the average testing duration of the resistor.
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