Power supply compatibility test method for aircraft radar and electronic interference task system

Abstract

The invention belongs to the technical field of aircraft power supply test design, and particularly relates to a power supply compatibility test method for an aircraft radar and an electronic interference mission system, which comprises the following steps: step 1, designing a radar and electronic interference mission system configuration state table, including engine speed, interference mode, radar state, interference pod state and interference pod load information; 2, designing an interference pod load characteristic selection table which comprises pulse frequency, duty ratio, high-frequency pulse frequency in a pulse high level and high-frequency pulse duty ratio information in the pulse high level; 3, extracting load information, a maximum coverage power configuration and load characteristics from the radar and electronic interference task system configuration state table and the interference pod load characteristic selection table to obtain a typical test state; and 4, based on the typical test state of the radar and electronic interference task system, carrying out a test, and verifying the compatibility of the radar, the electronic interference task and the power supply system.

Description

Technical Field

[0001] This application belongs to the field of aircraft power supply test design technology, specifically relating to a power supply compatibility test method for aircraft radar and electronic jamming mission systems. Background Technology

[0002] The airborne power supply system, used by various electrical devices, is the source and distribution center of aircraft electrical energy. The operating status of the power supply system directly affects aircraft safety and mission execution. Aircraft are equipped with high-power, non-linear loads such as radar and electronic jamming systems, and the resulting surges can affect the quality of the aircraft's power supply. To ensure continuous power quality on the aircraft, ground-based interconnection tests between the power supply system and various electrical devices need to be conducted during the pre-flight phase. This allows for a comprehensive and intuitive understanding of the compatibility between high-power, non-linear loads and the power supply system.

[0003] The electronic jamming mission system of the aircraft has many jamming pod configurations and various ways of combining with the radar system. In the process of verifying the power supply of different channels, it is necessary to simulate the situation where a certain channel suddenly fails to supply power and switches to single-channel power supply. With many test tasks and other on-board work being carried out in parallel, test resources are limited and cannot meet the comprehensive verification under all conditions.

[0004] Therefore, in order to meet the requirements for verifying the compatibility of radar and electronic jamming mission systems with power supply systems before flight, and to efficiently and accurately complete the power supply compatibility verification under different power supply states, different electronic jamming mission system configurations, and different combinations of radar and electronic jamming mission systems, this application is proposed.

[0005] This application is made in view of the aforementioned technical deficiencies. Summary of the Invention

[0006] The purpose of this application is to provide a power supply compatibility test method for aircraft radar and electronic jamming mission systems, applicable to onboard and ground power supply tests of aircraft power supply systems and radar and electronic jamming mission systems.

[0007] The technical solution of this application is:

[0008] A power supply compatibility test method for aircraft radar and electronic jamming mission systems includes:

[0009] Step 1: Design the radar and electronic jamming mission system configuration status table, including engine speed, jamming mode, radar status, jamming pod status, and jamming pod load information;

[0010] Step 2: Design a selection table for the load characteristics of the interference pod, including pulse frequency, duty cycle, high-frequency pulse frequency within the high-level pulse, and high-frequency pulse duty cycle within the high-level pulse;

[0011] Step 3: Extract load information from the radar and electronic jamming mission system configuration status table and jamming pod load characteristic selection table, covering the maximum power configuration and load characteristics, to obtain typical test states;

[0012] Step 4: Conduct experiments based on typical test conditions of radar and electronic jamming mission systems to verify the compatibility of radar, electronic jamming missions, and power supply systems.

[0013] According to at least one embodiment of this application, in the above-described power supply compatibility test method for aircraft radar and electronic jamming mission systems, step four involves conducting tests based on typical test states of the radar and electronic jamming mission systems to verify the compatibility of the radar, electronic jamming mission, and power supply system, including power supply tests in dual-channel power supply mode, dual-channel power supply to single-channel power supply tests, and single-channel power supply tests.

[0014] The power supply test under the dual-channel power supply mode is as follows: power on the ground power supply, power on all systems except the radar, connect the dual engines to the network, unplug the ground power supply plug, power on the power matching network, adjust the radar jamming mode, power on the radar, radar radiation, adjust the jamming mode of the jamming pod, power on the jamming pod, set the target for the jamming pod, and conduct test work on different working states of the radar and jamming pod.

[0015] The dual-channel power supply to single-channel power supply test is conducted after the dual-channel power supply test is completed. Specifically, the left or right generator switch is disconnected, and the transient test of the radar and jamming pod switching between different working states is carried out.

[0016] The single-channel power supply test is conducted after the dual-channel power supply to single-channel power supply test is completed. Specifically, the power matching network is powered on, the radar jamming mode is adjusted, the radar is powered on, the radar radiation is conducted, the jamming pod jamming mode is adjusted, the jamming pod is powered on, the jamming pod sets the target, the jamming pod radiation is conducted, and the radar and jamming pod are tested under different working states.

[0017] According to at least one embodiment of this application, in the above-described power supply compatibility test method for aircraft radar and electronic jamming mission systems, in step four, when conducting tests to verify the compatibility between the radar, electronic jamming mission and the power supply system, the test content includes the output AC three-phase voltage of the power supply system, voltage modulation, phase shift, imbalance, frequency and frequency modulation, total harmonic content of voltage, maximum single harmonic content, crest factor, generator output current, three-phase current at the load end, DC steady-state voltage of the power supply system, pulsating voltage value and pulsating voltage spectrum.

[0018] According to at least one embodiment of this application, in the above-described power supply compatibility test method for aircraft radar and electronic jamming mission systems, in step four, when conducting tests to verify the compatibility between the radar, electronic jamming mission and power supply system, the current curves of the ground power supply until it stabilizes, the current curves of the left and right generators until they stabilize, and the transient currents when the radar is powered on, the radar is radiating, the jamming pod is powered on, and the jamming pod is radiating are recorded. The total harmonic content of the current, the power factor, and the three-phase load volt-ampere imbalance during normal steady-state power supply of the dual-channel power supply are calculated.

[0019] This application has at least the following beneficial technical effects:

[0020] This paper provides a power supply compatibility test method for aircraft radar and electronic jamming mission systems. By designing and selecting typical test mission configurations to cover the maximum power demand, and designing switching test modes between different channels, it can efficiently and accurately verify whether the radar and electronic jamming mission systems are compatible with the power supply system and whether other electrical equipment is working properly under different load characteristics of the power supply subsystem when the aircraft is powered by dual-channel, single-channel, and dual-channel to single-channel power supply before flight. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the power supply test under dual-channel power supply mode, the dual-channel power supply to single-channel power supply test, and the single-channel power supply test provided in the embodiments of this application.

[0022] To better illustrate this embodiment, some content in the accompanying drawings may be omitted, enlarged, or reduced. They are for illustrative purposes only and should not be construed as limiting the scope of this application. Detailed Implementation

[0023] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, and other related parts can be referred to the general design.

[0024] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The word "comprising" as used in this application description indicates that the concept preceding the word encompasses the concepts listed following the word and their equivalents, without excluding other related concepts.

[0025] The operating modes of aircraft radar and electronic jamming mission systems are divided according to "configuration". Configuration information includes engine speed, jamming mode, radar status, jamming pod status, jamming pod load characteristics, etc. Selecting the most representative test state under different configurations is an important basis for verifying its power supply compatibility. The jamming pod load characteristics are mainly determined by the pulse characteristics when its load is radiated.

[0026] Based on the above, this application provides a power supply compatibility test method for aircraft radar and electronic jamming mission systems. At the beginning of the test, a configuration state table and a jamming pod load characteristic selection table are designed to clearly select typical test states and their typical load pulse characteristics for testing. The specific details are as follows.

[0027] By selecting typical load characteristics, a switching test mode between different channels of the same configuration was designed, measurement points were set, test verification was completed, and test conclusions were given.

[0028] Step 1: Design the radar and electronic jamming mission system configuration status table, including engine speed, jamming mode, radar status, jamming pod status, and jamming pod load information, as shown in Table 1 below:

[0029] Table 1 Test Status Table for Configuration 1 General Configuration

[0030] Step 2: Design a selection table for the load characteristics of the interference pod, including pulse frequency, duty cycle, high-frequency pulse frequency within the high-level pulse, and high-frequency pulse duty cycle within the high-level pulse, as shown in Table 2 below:

[0031] Table 2 Selection of Load Characteristics for Interference Pods

[0032] Step 3: Extract load information from the radar and electronic jamming mission system configuration status table and jamming pod load characteristic selection table, covering the maximum power configuration and load characteristics, to obtain typical test states.

[0033] Step 4: Conduct experiments based on typical test conditions of radar and electronic jamming mission systems to verify the compatibility of radar, electronic jamming missions, and power supply systems.

[0034] Through testing under typical test conditions of radar and electronic jamming mission systems, it can be ensured that all load types have been verified, and the maximum power configuration is compatible with the power supply system, thus demonstrating that the power consumption is compatible with the power supply system under any load type.

[0035] The test of compatibility between radar of the same configuration, electronic jamming mission, and power supply system under typical test conditions, to ensure that the test process closely resembles actual use, involves connecting all ground-connectable electrical equipment to ensure it is in normal working condition. This includes power supply tests in dual-channel power supply mode, dual-channel power supply to single-channel power supply conversion tests, and single-channel power supply tests, such as... Figure 1 As shown.

[0036] The power supply test under dual-channel power supply mode is as follows: ground power supply is turned on → all systems except radar are turned on → dual engines are connected to the network → the ground power plug is unplugged to simulate airborne operation → the power matching network is turned on → the radar jamming mode is adjusted → the radar is turned on → radar radiation → the jamming pod jamming mode is adjusted → the jamming pod is turned on → the jamming pod sets the target → the jamming pod radiation. Under different engine speeds, the radar and jamming pod are tested under different operating conditions.

[0037] The dual-channel power supply to single-channel power supply test is conducted after the dual-channel power supply test is completed. Specifically, the left or right generator switch is disconnected, and the transient test of the radar and jamming pod switching between different working states is carried out.

[0038] The single-channel power supply test is conducted after the dual-channel power supply to single-channel power supply test is completed. Specifically, the test involves: powering on the power matching network → adjusting the radar jamming mode → powering on the radar → radar radiation → adjusting the jamming pod's jamming mode → powering on the jamming pod → setting the target for the jamming pod → jamming pod radiation. This process is used to test the radar and jamming pod under different operating conditions.

[0039] The conversion test for expanding to three-channel and four-channel power supply modes as needed can be referred to the above.

[0040] When conducting experiments to verify the compatibility of radar, electronic jamming missions and power supply systems, the test contents include the output AC three-phase voltage of the power supply system, voltage modulation, phase shift, imbalance, frequency and frequency modulation, total harmonic content of voltage, maximum single harmonic content, crest factor, generator output current, three-phase current at the load end, DC steady-state voltage of the power supply system, pulsating voltage value and pulsating voltage spectrum.

[0041] When conducting experiments to verify the compatibility of radar, electronic jamming missions and power supply systems, record the current curves from ground power supply to stable operation, from left and right generators to grid connection to stable operation, and record the transient currents when the radar is powered on, when the radar is radiating, when the jamming pod is powered on, and when the jamming pod is radiating. Calculate the total harmonic content of the current, power factor, and three-phase load volt-ampere imbalance when the dual-channel power supply is in normal steady state.

[0042] Due to the complexity of the radar and electronic jamming mission system configurations given in Table 1 and the jamming pod load characteristics given in Table 2, as well as the large amount of experimental test data, an experimental data analysis table can be designed to provide clear and intuitive analysis of the experimental data and to present experimental verification conclusions, as shown in Table 3 below:

[0043] Table 3. Analysis of Test Data under Dual-Channel Normal Power Supply Condition

[0044] By using Table 3 to record data, when analyzing experimental results, it is no longer necessary to repeatedly refer to the experimental status in Tables 1 and 2, and experimental conclusions can be drawn quickly.

[0045] The above embodiments disclose a power supply compatibility test method for aircraft radar and electronic jamming mission systems. It provides a typical load characteristic selection method, comprehensively covering the maximum power demand under various configurations. By switching between different channels in the test mode, it avoids the routine onboard checks required for each engine restart. It can efficiently and accurately verify the compatibility of the radar and electronic jamming mission systems with the power supply system under different load characteristics during pre-flight operation, with the power supply system operating under dual-channel, single-channel, and dual-channel-to-single-channel power supply conditions, even with only one engine start-up. Furthermore, it can quickly and intuitively provide test conclusions. Multiple tests have verified that this method meets aircraft usage requirements and effectively reduces test resource and human resource costs.

[0046] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A power supply compatibility test method for aircraft radar and electronic jamming mission systems, characterized in that, include: Step 1: Design the radar and electronic jamming mission system configuration status table, including engine speed, jamming mode, radar status, jamming pod status, and jamming pod load information; Step 2: Design a selection table for the load characteristics of the interference pod, including pulse frequency, duty cycle, high-frequency pulse frequency within the high-level pulse, and high-frequency pulse duty cycle within the high-level pulse; Step 3: Extract load information from the radar and electronic jamming mission system configuration status table and jamming pod load characteristic selection table, covering the maximum power configuration and load characteristics, to obtain typical test states; Step 4: Conduct experiments based on typical test conditions of radar and electronic jamming mission systems to verify the compatibility of radar, electronic jamming missions, and power supply systems.

2. The power supply compatibility test method for aircraft radar and electronic jamming mission systems according to claim 1, characterized in that, In step four, based on the typical test conditions of the radar and electronic jamming mission system, tests are conducted to verify the compatibility of the radar, electronic jamming mission and power supply system, including power supply test in dual-channel power supply mode, dual-channel power supply to single-channel power supply test, and single-channel power supply test. The power supply test under the dual-channel power supply mode is as follows: power on the ground power supply, power on all systems except the radar, connect the dual engines to the network, unplug the ground power supply plug, power on the power matching network, adjust the radar jamming mode, power on the radar, radar radiation, adjust the jamming mode of the jamming pod, power on the jamming pod, set the target for the jamming pod, and conduct test work on different working states of the radar and jamming pod. The dual-channel power supply to single-channel power supply test is conducted after the dual-channel power supply test is completed. Specifically, the left or right generator switch is disconnected, and the transient test of the radar and jamming pod switching between different working states is carried out. The single-channel power supply test is conducted after the dual-channel power supply to single-channel power supply test is completed. Specifically, the power matching network is powered on, the radar jamming mode is adjusted, the radar is powered on, the radar radiation is conducted, the jamming pod jamming mode is adjusted, the jamming pod is powered on, the jamming pod sets the target, the jamming pod radiation is conducted, and the radar and jamming pod are tested under different working states.

3. The power supply compatibility test method for aircraft radar and electronic jamming mission systems according to claim 2, characterized in that, In step four, when conducting experiments to verify the compatibility between radar, electronic jamming missions and the power supply system, the test content includes the output AC three-phase voltage of the power supply system, voltage modulation, phase shift, imbalance, frequency and frequency modulation, total harmonic content of voltage, maximum single harmonic content, crest factor, generator output current, three-phase current at the load end, DC steady-state voltage of the power supply system, pulsating voltage value and pulsating voltage spectrum.

4. The power supply compatibility test method for aircraft radar and electronic jamming mission systems according to claim 3, characterized in that, In step four, when conducting experiments to verify the compatibility of radar, electronic jamming missions and power supply systems, record the current curves from ground power supply to stable operation, from left and right generators to grid connection to stable operation, and record the transient currents when the radar is powered on, when the radar is radiating, when the jamming pod is powered on, and when the jamming pod is radiating. Calculate the total harmonic content of the current, power factor, and three-phase load volt-ampere imbalance when the dual-channel power supply is in normal steady state.

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