CN111736121A - Method for making reliability test profile of ground semi-fixed radar - Google Patents
Method for making reliability test profile of ground semi-fixed radar Download PDFInfo
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- CN111736121A CN111736121A CN202010514133.6A CN202010514133A CN111736121A CN 111736121 A CN111736121 A CN 111736121A CN 202010514133 A CN202010514133 A CN 202010514133A CN 111736121 A CN111736121 A CN 111736121A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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Abstract
The invention relates to the technical field of reliability tests and discloses a method for making a reliability test profile of a ground semi-fixed radar. The method for formulating the reliability test section of the ground semi-fixed radar comprises the following steps of carrying out section analysis on a typical task process of the ground semi-fixed radar according to the characteristics of the ground semi-fixed radar; wherein the typical task process comprises a transportation phase, a preparation phase, an on duty phase and a transfer phase; a test profile scheme is made by combining comprehensive environmental stress and a profile analysis conclusion; wherein the comprehensive environmental stress comprises vibration stress, temperature stress, humidity stress and electric stress. Aiming at the requirements of verifying and improving the reliability level of the ground semi-fixed radar, the invention researches and obtains a method for making a corresponding test section by analyzing the task section of the ground semi-fixed radar, thereby determining the test section scheme of the ground semi-fixed radar and perfecting the assessment method of the ground semi-fixed radar reliability index system.
Description
Technical Field
The invention relates to the technical field of reliability tests, in particular to a method for making a reliability test profile of a ground semi-fixed radar.
Background
With the continuous update of radar equipment, people have higher and higher requirements on the reliability of the radar. The accurate reliability test profile has important significance for improving and assessing the reliability level of equipment, so that the reliability assessment must be carried out in a group D of identification and quality consistency test of the radar, which is definitely required in GJB 74A-98 general Specification for military ground radar. The motor radar is arranged on a motor vehicle and a trailer and has self-running capability; or a radar mounted in a shelter and adapted to be carried by a variety of vehicles. The fixed radar has no self-propelled capacity, is transported in a box-packing mode, and needs to be constructed in a radar position before installation. A semi-stationary radar is a radar that is loaded in a form intermediate between mobile and stationary radars. For the ground semi-fixed radar, the loading mode is not fixed and is between the ground fixed equipment and the mobile equipment, so that a method for establishing a test section of the ground semi-fixed radar and a universal test section are not proposed at present.
Disclosure of Invention
Therefore, it is necessary to provide a method for establishing a reliability test profile of a semi-fixed ground radar, which is directed to the problem of how to establish a general test profile and test method for the semi-fixed ground radar.
A method for making a reliability test profile of a ground semi-stationary radar comprises the steps of carrying out profile analysis on a typical task process of the ground semi-stationary radar according to the characteristics of the ground semi-stationary radar; wherein the typical task process comprises a transportation phase, a preparation phase, an on duty phase and a transfer phase; a test profile scheme is made by combining comprehensive environmental stress and a profile analysis conclusion; wherein the comprehensive environmental stress comprises vibration stress, temperature stress, humidity stress and electric stress.
According to the method for formulating the reliability test section of the ground semi-fixed radar, the section analysis is carried out on the ground semi-fixed radar in four typical task processes including a transportation stage, a preparation stage, an on duty stage and a transfer stage according to the characteristics of the ground semi-fixed radar. Aiming at the requirements of the ground semi-fixed radar for verifying and improving the reliability level, a method for establishing a test section is researched and obtained by analyzing a typical task process section of the ground semi-fixed radar, a test section scheme of the ground semi-fixed radar is determined, an assessment method of a reliability index system is perfected, and engineering application is guided.
In one embodiment, the typical task process of the ground semi-stationary radar comprises transporting the components of the ground semi-stationary radar to a target site and completing the assembly of the radar system; transferring a mobile device of the radar system to a target place and putting the radar system into a work preparation state; after the radar system is deployed in a target position, performing power-on self-check operation on the radar system; after the radar system works normally, entering an all-weather on-duty state and executing a work on-duty task; and after the work duty task of the radar system is completed, transferring according to the combat requirement.
In one embodiment, the step of formulating the test profile scheme by combining the comprehensive environmental stress and the profile analysis conclusion comprises the steps of performing a vibration test on the ground semi-fixed radar before performing a reliability test on the ground semi-fixed radar, and simulating the transportation condition of the ground semi-fixed radar; simulating the temperature stress intensity of the ground semi-fixed radar in summer and winter environments at least, and setting the test time of the temperature stress in the reliability test section according to the time proportion of different seasons; and simulating the electric stress working state of the ground semi-fixed radar, and setting the test time of the electric stress in the reliability test section according to different time proportions.
In one embodiment, the transportation condition includes road transportation and service transportation.
In one embodiment, the summer is simulated by applying temperature stress higher than the normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress higher than the normal temperature accounts for 1/2 of the reliability test time; and simulating the winter by applying temperature stress lower than the normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress lower than the normal temperature accounts for 1/2 of the reliability test time.
In one embodiment, the intensity of the temperature stress experienced by the ground semi-fixed radar in spring, summer, fall and winter environments is simulated, and the test time of the temperature stress in the reliability test section is formulated according to the time proportion of different seasons.
In one embodiment, the spring and autumn are simulated by applying normal-temperature stress to the ground semi-fixed radar, wherein the duration of the normal-temperature stress accounts for 1/2 of the reliability test time; 1/4, simulating summer by applying temperature stress higher than normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress higher than the normal temperature accounts for the reliability test time; and simulating the winter by applying temperature stress lower than the normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress lower than the normal temperature accounts for 1/4 of the reliability test time.
In one embodiment, at least one hot dipping test is carried out before the simulated summer of applying the temperature stress higher than the normal temperature to the ground semi-fixed radar; the hot dipping temperature is the high-temperature storage temperature of the ground semi-fixed radar.
In one embodiment, at least one cold dipping test is carried out before the ground semi-fixed radar is subjected to temperature stress lower than the normal temperature to simulate winter; the cold immersion temperature is the low-temperature storage temperature of the ground semi-fixed radar.
In one embodiment, the duration of electrical stress at the nominal value accounts for 1/2 of the reliability test time, the duration of electrical stress at the upper limit value accounts for 1/4 of the reliability test time, and the duration of electrical stress at the lower limit value accounts for 1/4 of the reliability test time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flowchart of a method for making a reliability test profile of a ground semi-stationary radar according to an embodiment of the present invention;
FIG. 2 is a cross-sectional flow diagram of an exemplary mission of a ground semi-stationary radar according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a task profile of a semi-stationary ground radar according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a reliability test of a ground semi-stationary radar according to an embodiment of the present invention;
FIG. 5 is a laboratory temperature profile of a ground semi-stationary radar in accordance with one embodiment of the present invention;
FIG. 6 is a laboratory temperature profile of a ground semi-stationary radar in accordance with another embodiment of the present invention;
FIG. 7 is a cross section of a reliability test of a ground semi-stationary radar according to an embodiment of the present invention;
fig. 8 is a section of a reliability test of a ground semi-stationary radar according to another embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
The task profile is a description of the expected main tasks of the equipment in a time sequence, and the analysis of the task profile generally comprises the main tasks and working states to be completed by the equipment, working events and sequences, the environment and the like. Aiming at the requirements of verifying and improving the reliability level of the ground semi-fixed radar, the invention researches and obtains a method for formulating the test section of the ground semi-fixed radar by analyzing the task section of the ground semi-fixed radar, thereby determining the test section of the ground semi-fixed radar, perfecting the assessment method of the reliability index system of the ground semi-fixed radar and having guiding function on engineering application.
Fig. 1 is a flowchart of a method for making a ground semi-fixed radar reliability test profile according to an embodiment of the present invention, where in an embodiment, the method for making the ground semi-fixed radar reliability test profile includes the following steps S100 to S200.
S100: according to the characteristics of the ground semi-stationary radar, performing profile analysis on a typical task process of the ground semi-stationary radar; wherein the typical mission process includes a transportation phase, a preparation phase, an attended phase, and a transfer phase.
S200: a test profile scheme is made by combining comprehensive environmental stress and a profile analysis conclusion; wherein the comprehensive environmental stress comprises vibration stress, temperature stress, humidity stress and electric stress.
The method carries out profile analysis through a typical task process of the ground semi-fixed radar which is between a maneuvering radar and a fixed radar according to the loading form of the ground semi-fixed radar. According to four stages of a transportation stage, a preparation stage, an on duty stage and a transfer stage included in a typical task process, and combined with comprehensive environmental stress possibly suffered by the ground semi-fixed radar in the four stages, a corresponding test section scheme is formulated so as to simulate a real application scene of the ground semi-fixed radar and perfect an assessment method of a reliability index system of the ground semi-fixed radar. Wherein the comprehensive environmental stress comprises vibration stress, temperature stress, humidity stress and electric stress. And verifying the reliability level of the ground semi-fixed radar by using the formulated test profile scheme, and improving the product performance of the ground semi-fixed radar according to a verification result.
Fig. 2 is a task flow diagram of a ground semi-stationary radar according to an embodiment of the present invention, wherein the task flow of the ground semi-stationary radar includes the following steps S110 to S150.
S110: and transporting the components of the ground semi-fixed radar to a target place, and finishing the assembly of the radar system.
S120: and transferring the mobile equipment of the radar system to a target place, and enabling the radar system to enter a work preparation state.
S130: and after the radar system is deployed in a target position, performing power-on self-check operation of the radar system.
S140: and after the radar system works normally, entering an all-weather on-duty state and executing a work on-duty task.
S150: and after the work duty task of the radar system is completed, transferring according to the combat requirement.
The typical use process of the radar equipment and the radar system of the ground semi-fixed radar is as follows: and transporting the ground semi-stationary radar component equipment to a target site, such as a radar assembly plant or assembly site. And after the target position is transported, the radar system is assembled. And after the mobile equipment of the radar system is transferred to a target place, the radar system enters a work preparation state. And after the radar system is unfolded, performing power-on self-test on each device in the radar system, and after all devices are checked to be normal, the radar system enters a working mode. The radar system enters an all-weather on-duty state, a work on-duty task is executed, the ground semi-fixed radar completes tasks of searching, monitoring, identifying and tracking aerial targets and the like, and coordinates and motion parameters of the aerial targets are determined. And after the work duty task of the radar system is completed, the radar system is withdrawn. After the collection is finished, the radar system can carry out maneuvering transfer according to the combat demand and continue to execute tasks to the next target location. For the radar system, a complete task process generally includes stages of transferring, unfolding, working (including preparation, duty, use), withdrawing, and the like, and a typical task profile of the ground semi-stationary radar is shown in fig. 3, where fig. 3 is a typical task profile analysis diagram of the ground semi-stationary radar according to an embodiment of the present invention.
The reliability test section generally comprises comprehensive environmental stresses such as vibration stress, temperature stress, humidity stress, electric stress and the like, typical task processes of the ground semi-fixed radar system and equipment on the radar are analyzed by combining four types of environmental stresses, and a corresponding test section scheme is formulated. Fig. 4 is a flowchart illustrating a reliability test of a ground semi-stationary radar according to an embodiment of the present invention, wherein the step of formulating a test profile scheme according to the integrated environmental stress and profile analysis conclusion includes the following steps S210 to S230.
S210: before the reliability test of the ground semi-fixed radar is carried out, the ground semi-fixed radar is subjected to a vibration test, and the transportation working condition of the ground semi-fixed radar is simulated.
S220: and simulating the temperature stress intensity of the ground semi-fixed radar in summer and winter environments, and setting the test time of the temperature stress in the reliability test section according to the time proportion of different seasons.
S230: and simulating the electric stress working state of the ground semi-fixed radar, and setting the test time of the electric stress in the reliability test section according to different time proportions.
In practical application, the ground semi-fixed radar system and the equipment on the radar can reach a target position under the influence of various transportation working condition environments before starting to work and watch. The transport behavior is typically simulated in a reliability test profile by applying a vibratory stress. Therefore, according to the task profile analysis, the vibration stress test is completed before the equipment starts to work and is watched for the ground semi-fixed radar system and the equipment on the radar.
After the ground semi-fixed radar system enters a position and is unfolded, the radar system and equipment on the radar start a long-term duty task. In the long-term on-duty task process, the radar system and the equipment on the radar need to be started up for a long time under the environment states of all weather and various seasons so as to complete the main tasks of searching, tracking and the like in the work on-duty task. Aiming at the long-term duty task that the radar system and the equipment on the radar need to simulate under all weather and various seasonal environment states, the comprehensive simulation can be carried out by applying temperature stress, humidity stress and electric stress in a reliability test section, even if different temperatures and humidity are applied to the radar system and the equipment on the radar, and the working conditions of the equipment under all weather states can be tested by enabling the radar system and the equipment on the radar to be under the electrified working conditions. In four seasons of spring, summer, autumn and winter, the environmental states in summer and winter are more extreme, so the temperature stress intensity of the ground semi-fixed radar in the environments of summer and winter is at least simulated, and the test time of different temperature stress intensities in the reliability test section is set according to the proportion of the two seasons in the working time. Meanwhile, simulation tests are required to be carried out on the working conditions of the radar system and the equipment on the radar in different power states. The reliability test section also needs to simulate the electric stress working state of the ground semi-fixed radar, and test time under different electric stress conditions in the reliability test section is formulated according to different time proportions. The ground semi-fixed radar generally has certain maneuvering capability, and the radar system and the equipment on the radar are removed after the radar system and the equipment on the radar complete the duty task. And then the radar system and the equipment on the radar can be transferred to the next target position according to the combat requirement, and the working condition of the process is generally simulated by the vibration stress in the reliability test section. But for the ground semi-stationary radar, too many transitions are generally not made during its life cycle.
It should be understood that although the steps in the flowcharts of fig. 1, 2 and 4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1, 2 and 4 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least some of the other steps.
In one embodiment, the transportation condition includes road transportation and service transportation. According to practical application, the transportation working conditions can be divided into highway transportation and service transportation according to road conditions and transportation modes possibly experienced in the transportation process. Before the reliability test of the temperature and the electrical stress is started, the vibration test of the transportation stage is required to be completed, wherein the vibration test for respectively simulating road transportation and service transportation is completed to simulate the transportation working condition.
For vibration testing to simulate road traffic, the applied vibration test conditions may be parameter set according to the highway traffic spectrum specified in GJB150.16A-2009 military equipment laboratory environmental test methods. If no product related technical documents exist, the transportation mileage of the expressway is set according to the transportation mileage of an expressway truck specified in GJB150.16A-2009 laboratory environment test method for military equipment, namely 3200 km-6400 km. For the vibration test of service transportation, the applied vibration test conditions can be subjected to parameter setting according to actual transportation loading conditions, referring to the vibration environment spectrum of the two-wheeled trailer or the wheeled vehicle specified in GJB150.16A-2009 "military equipment laboratory environment test method". If no product related technical documents exist, the transportation mileage of the service transportation is set according to the task/external field transportation mileage specified in GJB150.16A-2009 laboratory environment test method for military equipment, namely 500 km-800 km.
FIG. 5 is a laboratory temperature profile of a ground semi-stationary radar in accordance with one embodiment of the present invention, wherein in one embodiment, the duration of the above-ambient temperature stress accounts for 1/2 of the reliability test time in summer simulated by applying the above-ambient temperature stress to the ground semi-stationary radar; and simulating the winter by applying temperature stress lower than the normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress lower than the normal temperature accounts for 1/2 of the reliability test time. In order to improve the test efficiency of the reliability test, the test at the normal temperature part can be simulated by the copying test of equipment under the natural environment, and the duration time is half of the total test time. Therefore, in the reliability test section, only two extreme temperature environment conditions of applying temperature stress higher than the normal temperature to the ground semi-stationary radar to simulate summer temperature environment stress and applying temperature stress lower than the normal temperature to the ground semi-stationary radar to simulate winter temperature environment stress are kept to be checked, and the high-temperature stage and the low-temperature stage are respectively simulated and checked through environment test equipment. As shown in fig. 5, the low temperature stage examines the environmental temperature stress of the radar system at the low temperature working limit, and the high temperature stage examines the environmental temperature stress of the radar system at the high temperature working limit. When temperature stress examination is carried out, the change rate of the temperature applied by the environment test equipment is not less than 5 ℃/min in the temperature change stage of increasing from a low-temperature working step to a high-temperature working step or increasing from a high-temperature working step to a low-temperature working step.
In one embodiment, the intensity of the temperature stress experienced by the ground semi-fixed radar in spring, summer, fall and winter environments is simulated, and the test time of the temperature stress in the reliability test section is formulated according to the time proportion of different seasons. The ground semi-fixed radar system needs to complete an on-duty task under all-weather and various seasonal environment states in practical application. In the life cycle environment, the environment conditions of four seasons of spring, summer, autumn and winter are generally needed. In order to fully cover the weather condition of the product in an on-duty state, fully examine the working performance of the product in all-weather environment, simulate the temperature stress intensity of the ground semi-fixed radar in the environments of spring, summer, autumn and winter in a reliability test section, and set the test time of the temperature stress in the reliability test section according to the time proportion of different seasons.
FIG. 6 is another laboratory temperature profile of a ground semi-stationary radar in accordance with one embodiment of the present invention, wherein in one embodiment, the development of summer and winter temperature stresses in a reliability test profile are generally evaluated in accordance with the limit conditions specified in the product correlation document; and (3) evaluating the product according to normal temperature for formulation of spring and winter temperature stress, and distributing the temperature stress intensity to the total test section time according to the temperature stress intensity to be suffered by each season according to the time proportion. And (3) simulating spring and autumn by applying normal-temperature stress to the ground semi-fixed radar, wherein the duration of the normal-temperature stress accounts for 1/2 of the reliability test time. And in summer, simulating 1/4 that the duration time of the temperature stress higher than the normal temperature accounts for the reliability test time by applying the temperature stress higher than the normal temperature to the ground semi-fixed radar. And simulating the winter by applying temperature stress lower than the normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress lower than the normal temperature accounts for 1/4 of the reliability test time. In this example, the temperature stress at the normal temperature portion was evaluated at 20 ℃. As shown in fig. 6, in the reliability test section, the duration of each temperature step is the continuous operating time specified in the product specification. If no relevant documents exist, the test is carried out for 24h of time of each cycle test. The method and principle for determining the test profile of the equipment on the radar are consistent with those of the radar system, but the high-temperature and low-temperature working limit temperatures of different equipment can be different due to different installation positions in the radar system, different modes, different environment control situations and the like. Therefore, the test temperatures of different devices are determined according to the requirements of the environment conditions of the devices on the radar. In addition, when the temperature stress examination is carried out, the temperature change rate applied by the environment test equipment is not less than 5 ℃/min when the temperature change stage is increased from the normal temperature stage to the high temperature stage, or decreased from the high temperature stage to the normal temperature stage, or increased from the normal temperature stage to the low temperature stage.
In one embodiment, at least one hot dip test is performed before the simulation of summer season by applying a temperature stress higher than the normal temperature to the ground semi-stationary radar. The hot dipping temperature applied to the ground semi-fixed radar in the hot dipping test is the high-temperature storage temperature of the ground semi-fixed radar. Increasing the hot dip test at the appropriate time allows the ability of the product to be restartable after storage in an extremely hot environment to be investigated. In this example, the hot dip test was performed before entering the high temperature work bench. The implementation times of the hot dipping test are determined according to the actual use condition of the product and the requirements of technical documents, and at least 1 hot dipping test is needed.
In one embodiment, at least one cold dip test is performed before applying a temperature stress below ambient temperature to the ground semi-stationary radar simulating winter. And the cold immersion temperature applied to the ground semi-fixed radar in the cold immersion test is the low-temperature storage temperature of the ground semi-fixed radar. Similarly, adding the cold soak test at the appropriate time allows for the ability of the product to be tested for restart after storage in an extremely cold environment. In this example, the cold dip test was performed before entering the low temperature working stage. The implementation times of the cold soaking test are determined according to the actual use condition of the product and the requirements of technical documents, and at least 1 cold soaking test is required.
The control condition of the humidity stress is determined according to the actual use condition of the product and the requirement of a technical document. In this embodiment, in the reliability test section, no humidity control is performed for the humidity stress, and therefore, the test chamber should not perform the drying operation for the ground semi-stationary radar.
FIG. 7 is a cross-section of a reliability test of a semi-stationary ground radar according to one embodiment of the present invention, wherein the duration of the electrical stress at the nominal value accounts for 1/2 of the reliability test time, the duration of the electrical stress at the upper limit value accounts for 1/4 of the reliability test time, and the duration of the electrical stress at the lower limit value accounts for 1/4 of the reliability test time. When the temperature stress test is carried out on the ground semi-fixed radar, input voltage needs to be applied to a tested object to test the product condition of the ground semi-fixed radar under the condition that the temperature stress and the electric stress act simultaneously. As shown in fig. 7, when the environment test equipment performs simulation examination on the ground semi-stationary radar in the high temperature stage and the low temperature stage, the power-on processing is performed on the test object in the temperature stable state in the high temperature stage and the low temperature stage, and the power-on processing is not performed on the test object in the temperature change stage. In the power-on phase of the test piece, the duration of the applied electrical stress at the nominal value accounts for 1/2 of the power-on time, the duration of the applied electrical stress at the upper limit value accounts for 1/4 of the power-on time, and the duration of the applied electrical stress at the lower limit value accounts for 1/4 of the total power-on time. If no other provisions exist, the variation direction of the input voltage applied to the ground semi-fixed radar is +/-10% of the nominal voltage, and the variation direction and the application duration of the input voltage are determined according to the use condition of equipment and the requirements of technical documents when a reliability test is specifically carried out.
In one embodiment, 10% of the time may be selected randomly to be not powered on or all the time may be powered on. Namely, in each test cycle, the power is randomly cut off except for 10 percent of time, or the ground semi-fixed radar is in a power-on working state in each test cycle.
Fig. 8 is a cross section of a reliability test of a ground semi-stationary radar according to an embodiment of the present invention, in which, as shown in fig. 8, when the environment test equipment performs simulation tests on the ground semi-stationary radar in a normal temperature stage, a high temperature stage, and a low temperature stage, the test object is electrified in a temperature stable state in the normal temperature stage, the high temperature stage, and the low temperature stage, and the test object is not electrified in a temperature change stage. Similarly, in the energization phase of the test piece, the duration of the applied electrical stress at the nominal value accounts for 1/2 of the energization time, the duration of the applied electrical stress at the upper limit value accounts for 1/4 of the energization time, and the duration of the applied electrical stress at the lower limit value accounts for 1/4 of the total energization time. If no other provisions exist, the variation direction of the input voltage applied to the ground semi-fixed radar is +/-10% of the nominal voltage, and the variation direction and the application duration of the input voltage are determined according to the use condition of equipment and the requirements of technical documents when a reliability test is specifically carried out.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for making a reliability test profile of a ground semi-fixed radar is characterized by comprising the following steps:
according to the characteristics of the ground semi-stationary radar, performing profile analysis on a typical task process of the ground semi-stationary radar; wherein the typical task process comprises a transportation phase, a preparation phase, an on duty phase and a transfer phase;
a test profile scheme is made by combining comprehensive environmental stress and a profile analysis conclusion; wherein the comprehensive environmental stress comprises vibration stress, temperature stress, humidity stress and electric stress.
2. The method of claim 1, wherein a typical mission procedure for the ground semi-stationary radar comprises:
transporting the components of the ground semi-fixed radar to a target position, and completing the assembly of a radar system;
transferring a mobile device of the radar system to a target place and putting the radar system into a work preparation state;
after the radar system is deployed in a target position, performing power-on self-check operation on the radar system;
after the radar system works normally, entering an all-weather on-duty state and executing a work on-duty task;
and after the work duty task of the radar system is completed, transferring according to the combat requirement.
3. The method of claim 1, wherein said formulating a test profile plan in combination with the integrated environmental stress and profile analysis conclusions comprises:
before a ground semi-fixed radar reliability test is carried out, carrying out a vibration test on the ground semi-fixed radar, and simulating the transportation working condition of the ground semi-fixed radar;
simulating the temperature stress intensity of the ground semi-fixed radar in summer and winter environments at least, and setting the test time of the temperature stress in the reliability test section according to the time proportion of different seasons;
and simulating the electric stress working state of the ground semi-fixed radar, and setting the test time of the electric stress in the reliability test section according to different time proportions.
4. A method according to claim 3, wherein the transport conditions include road transport and service transport.
5. The method according to claim 3, characterized in that the summer is simulated by applying a temperature stress above ambient temperature to the ground semi-stationary radar, the duration of the temperature stress above ambient temperature occupying 1/2 of the reliability test time; and simulating the winter by applying temperature stress lower than the normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress lower than the normal temperature accounts for 1/2 of the reliability test time.
6. The method of claim 3, wherein the intensity of the temperature stress experienced by the ground semi-stationary radar in spring, summer, fall and winter environments is simulated, and the test time for the temperature stress in the reliability test profile is scaled according to the time in different seasons.
7. The method of claim 3, wherein spring and fall are simulated by applying a temperature stress of ambient temperature to the ground semi-stationary radar, the duration of the temperature stress of ambient temperature occupying 1/2 of the reliability test time; 1/4, simulating summer by applying temperature stress higher than normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress higher than the normal temperature accounts for the reliability test time; and simulating the winter by applying temperature stress lower than the normal temperature to the ground semi-fixed radar, wherein the duration of the temperature stress lower than the normal temperature accounts for 1/4 of the reliability test time.
8. Method according to any one of claims 5 to 7, characterized in that at least one hot dip test is carried out before simulating summer when applying a temperature stress higher than the normal temperature to the ground semi-stationary radar; the hot dipping temperature is the high-temperature storage temperature of the ground semi-fixed radar.
9. The method according to claim 7, characterized in that at least one cold dip test is carried out before the application of a temperature stress lower than the normal temperature to the ground semi-stationary radar simulates winter; the cold immersion temperature is the low-temperature storage temperature of the ground semi-fixed radar.
10. The method of claim 3, wherein the duration of electrical stress at the nominal value is 1/2 times the reliability test time, the duration of electrical stress at the upper limit value is 1/4 times the reliability test time, and the duration of electrical stress at the lower limit value is 1/4 times the reliability test time.
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