Composite material airplane electrical return network impedance checking method and device based on voltage drop constraint

Abstract

The embodiment of the invention discloses a composite material airplane electrical return network impedance checking method based on voltage drop constraint. The method comprises the following steps: determining an electrical return network design scheme of a composite material airplane; performing impedance checking on the newly obtained electrical return network design scheme to judge whether the newly obtained electrical return network design scheme meets the requirement or not; if not, determining a new electrical return network design scheme, and judging whether the newly obtained electrical return network design scheme meets the requirement or not; and carrying out impedance checking on the newly obtained electrical return network design scheme to judge whether the newly obtained electrical return network design scheme meets the requirement or not, namely solving the maximum impedance of the newly obtained electrical return network design scheme, substituting the obtained maximum impedance value into the aircraft power supply system simulation model as grounding impedance, and calculating the impedance of the newly obtained electrical return network design scheme. Determining the voltage value of the electrical load of each observation point; and obtaining a judgment result of a voltage drop constraint condition according to the voltage value, and further determining whether the newly obtained electrical return network design scheme meets the requirement or not.

Description

Technical Field

[0001] The present application relates to the field of electrical design technology, and in particular to a method and device for verifying impedance of an electrical circuit network of a composite aircraft based on voltage drop constraints. Background Art

[0002] Composite materials are now widely used in aircraft manufacturing due to their light weight and high strength. However, composite materials have low electrical conductivity and cannot be used as the electrical reference ground for the entire aircraft. Therefore, it is necessary to use existing structural parts, metal wire ducts, and add some flexible cables to build an electrical circuit network. The electrical circuit network is responsible for the return of electrical load working current, fault current, and lightning current. Traditional metal aircraft is an ideal electrical reference ground, and the impedance can be regarded as zero, but the electrical circuit network is not an ideal electrical reference ground, and the impedance is not equal to zero. Therefore, in the current design of the electrical circuit network, there are the following problems:

[0003] The electrical circuit network of an aircraft is pre-designed to be in the milliohm level, but when the current flowing through the electrical return network reaches 100A or even higher, a voltage drop of hundreds of millivolts will be generated. For electrical loads with high voltage requirements, the voltage drop caused by the impedance of the electrical circuit network is an important influencing factor that cannot be ignored.

[0004] The impedance of an aircraft's electrical circuit network is directly related to its configuration, metal materials, and cable diameter. Although increasing the proportion of metal materials and increasing cable diameter can reduce the impedance of the aircraft's electrical circuit network, it will increase the weight of the electrical circuit network, even exceeding the weight reduction achieved by using composite materials.

[0005] Therefore, it is necessary to establish a clear constraint scheme for the impedance of the electrical circuit network of composite aircraft. Summary of the invention

[0006] The embodiments of this specification provide a method and device for verifying the impedance of an electrical circuit network of a composite aircraft based on a voltage drop constraint, so as to solve the technical problem of how to verify the impedance of an electronic circuit network of a composite aircraft using a voltage drop constraint.

[0007] To solve the above technical problems, the embodiments of this specification provide the following technical solutions:

[0008] The embodiment of this specification provides a method for verifying impedance of an electrical circuit network of a composite aircraft based on voltage drop constraints, the method comprising:

[0009] Determine the electrical circuit network design for composite aircraft;

[0010] Each time the electrical circuit network design scheme is determined, the impedance check is performed on the newly obtained electrical circuit network design scheme to determine whether the newly obtained electrical circuit network design scheme meets the requirements;

[0011] If it does not meet the requirements, a new electrical circuit network design scheme is determined, and impedance verification is performed on the newly obtained electrical circuit network design scheme to determine whether the newly obtained electrical circuit network design scheme meets the requirements;

[0012] Among them, the impedance check of the newly obtained electrical circuit network design scheme is carried out to determine whether the newly obtained electrical circuit network design scheme meets the requirements, including:

[0013] Solve the maximum impedance of the newly obtained electrical circuit network design, substitute the obtained maximum impedance value into the aircraft power system simulation model as the ground impedance, and determine the voltage value of the electrical load at each observation point;

[0014] A judgment result of a voltage drop constraint condition is obtained according to the voltage value, and whether a newly obtained electrical circuit network design scheme meets the requirements is determined according to the judgment result of the voltage drop constraint condition.

[0015] Optionally, solving for the maximum impedance of the newly obtained electrical circuit network design includes:

[0016] Electromagnetic simulation software is used to solve the maximum impedance of the newly obtained electrical circuit network design.

[0017] Optionally, solving for the maximum impedance of the newly obtained electrical circuit network design includes:

[0018] The three-dimensional model corresponding to the newly obtained electrical circuit network design scheme is imported into the electromagnetic simulation software, and the maximum impedance of the newly obtained electrical circuit network design scheme is solved by using the electromagnetic simulation software.

[0019] Optionally, solving for the maximum impedance of the newly obtained electrical circuit network design includes:

[0020] Select the two endpoints with the farthest physical distance on the newly obtained electrical circuit network, solve the impedance value between the two endpoints, and use the impedance value between the two endpoints as the maximum impedance of the newly obtained electrical circuit network design solution.

[0021] Optionally, determining whether the newly obtained electrical circuit network design scheme meets the requirements according to the judgment result of the voltage drop constraint condition includes:

[0022] If the judgment result of the voltage drop constraint condition is that the voltage drop constraint condition is met, the newly obtained electrical circuit network design scheme meets the requirements.

[0023] Optionally, the determination result of the voltage drop constraint condition obtained according to the voltage value includes:

[0024] The voltage value is compared with an ideal voltage value to determine a voltage drop value, and whether a voltage drop constraint condition is satisfied is determined based on the voltage drop value.

[0025] Optionally, determine the new electrical circuit network design including:

[0026] According to the rules of reducing the impedance of the electrical circuit network, a new electrical circuit network design scheme is determined.

[0027] The embodiment of this specification provides a composite aircraft electrical circuit network impedance verification device based on voltage drop constraint, the device comprising:

[0028] A design module for determining an electrical circuit network design scheme for a composite aircraft; and determining a new electrical circuit network design scheme if the electrical circuit network design scheme does not meet the requirements;

[0029] A checking module is used to perform impedance checking on the newly obtained electrical circuit network design scheme after each determination of the electrical circuit network design scheme, so as to determine whether the newly obtained electrical circuit network design scheme meets the requirements;

[0030] Among them, the impedance check of the newly obtained electrical circuit network design scheme is carried out to determine whether the newly obtained electrical circuit network design scheme meets the requirements, including:

[0031] Solve the maximum impedance of the newly obtained electrical circuit network design, substitute the obtained maximum impedance value into the aircraft power system simulation model as the ground impedance, and determine the voltage value of the electrical load at each observation point;

[0032] A judgment result of a voltage drop constraint condition is obtained according to the voltage value, and whether a newly obtained electrical circuit network design scheme meets the requirements is determined according to the judgment result of the voltage drop constraint condition.

[0033] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:

[0034] By checking the impedance of the electrical circuit network of composite aircraft using voltage drop as a constraint condition, it is possible to accurately determine whether the electrical circuit network design scheme meets the requirements, and then obtain a composite aircraft electrical circuit network design scheme whose impedance meets the voltage requirements of the electrical load, thereby improving the design effect and efficiency of the composite aircraft electrical circuit network. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings required for use in the embodiments of this specification or the prior art description are briefly described below. Obviously, the following only describes the drawings required for use in some embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0036] Figure 1It is a flow chart of a composite aircraft electrical circuit network impedance verification method based on voltage drop constraint provided in the first embodiment of this specification.

[0037] Figure 2 It is a schematic diagram of the CST simulation model of the electrical circuit network in the first embodiment of this specification.

[0038] Figure 3 It is a schematic diagram of the impedance verification process of the electrical circuit network of a composite aircraft in the first embodiment of this specification.

[0039] Figure 4 It is a schematic diagram of the electrical circuit network resistance simulation results in the first embodiment of this specification.

[0040] Figure 5 It is a schematic diagram of the simulation results of the inductance of the electrical circuit network in the first embodiment of this specification.

[0041] Figure 6 It is a schematic diagram of a power system simulation model in the first embodiment of this specification.

[0042] Figure 7 This is a schematic diagram of the 230V AC load voltage value in the first embodiment of this specification.

[0043] Figure 8 It is a schematic structural diagram of an impedance calibration device for composite aircraft electrical circuit network based on voltage drop constraint provided in the second embodiment of this specification. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments involved in the specific implementation methods are only part of the embodiments of this application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the specific implementation methods without making creative work should belong to the scope of protection of this application.

[0045] The first embodiment of this specification (hereinafter referred to as "embodiment one") provides a composite aircraft electrical circuit network impedance verification method based on voltage drop constraints. The execution subject of embodiment one includes but is not limited to a terminal or a server or an operating system or an application, that is, the execution subject can be various and can be set, used or changed as needed. In addition, a third-party application can also assist the execution subject in executing embodiment one. For example, the method in embodiment one can be executed by a server, and a corresponding application can be installed on a terminal (the terminal can be held by a user), and data can be transmitted between the terminal or the application and the server, thereby assisting the server in executing the method in embodiment one.

[0046] like Figure 1 As shown, the impedance verification method of the electrical circuit network of a composite aircraft based on voltage drop constraint provided in the first embodiment includes:

[0047] S101: Determine the electrical circuit network design for composite aircraft;

[0048] The electrical circuit network refers to the metal network used for current return in composite aircraft, which is composed of the aircraft's own metal structure and flexible cables.

[0049] In the first embodiment, an electrical circuit network design scheme can be determined for a composite aircraft. For example, the cross-sectional area of ​​the metal structure and the flexible cable in the electrical circuit network is determined according to the current that the electrical circuit network needs to carry, and then the metal structure and the flexible cable are connected to form an electrical circuit network design scheme. Among them, a composite aircraft can refer to an aircraft made of composite materials, or an aircraft in which the proportion of composite materials exceeds a certain value, or an aircraft in which specific parts use composite materials, etc. The specific meaning of the composite aircraft is not limited in the first embodiment.

[0050] Preferably, after the electrical circuit network design scheme is determined, a three-dimensional model corresponding to the electrical circuit network design scheme can be generated (i.e., a three-dimensional model is generated from the electrical circuit network design scheme, and the electrical circuit network design scheme is expressed by the three-dimensional model, and the three-dimensional model can be generated by three-dimensional design software, such as CATIA or SolidWorks series software), for example Figure 2 The three-dimensional model shown.

[0051] S103: Each time the electrical circuit network design scheme is determined, impedance verification is performed on the newly obtained electrical circuit network design scheme to determine whether the newly obtained electrical circuit network design scheme meets the requirements;

[0052] In the first embodiment, each time the electrical circuit network design scheme is determined (including the first determination of the electrical circuit network design scheme), the impedance check can be performed on the newly obtained electrical circuit network design scheme to determine whether the newly obtained electrical circuit network design scheme meets the requirements.

[0053] Among them, impedance verification is performed on the newly obtained electrical circuit network design scheme to determine whether the newly obtained electrical circuit network design scheme meets the requirements, which may include:

[0054] Solve the maximum impedance of the newly obtained electrical circuit network design, substitute the obtained maximum impedance value into the aircraft power system simulation model as the ground impedance, and determine the voltage value of the electrical load at each observation point;

[0055] A judgment result of a voltage drop constraint condition is obtained according to the voltage value, and whether a newly obtained electrical circuit network design scheme meets the requirements is determined according to the judgment result of the voltage drop constraint condition.

[0056] The impedance check is further explained below:

[0057] In the first embodiment, solving the maximum impedance of the newly obtained electrical circuit network design solution may include: solving the maximum impedance of the newly obtained electrical circuit network design solution using electromagnetic simulation software.

[0058] As mentioned above, a three-dimensional model corresponding to the electrical circuit network design scheme can be generated, and solving the maximum impedance of the newly obtained electrical circuit network design scheme can include: importing the three-dimensional model corresponding to the newly obtained electrical circuit network design scheme into electromagnetic simulation software, and using the electromagnetic simulation software to solve the maximum impedance of the newly obtained electrical circuit network design scheme.

[0059] Specifically, solving the maximum impedance of the newly obtained electrical circuit network design scheme may include: selecting two endpoints on the newly obtained electrical circuit network that are physically farthest apart (theoretically, the two points farthest apart have the largest impedance value), solving the impedance value between the two endpoints, and using the impedance value between the two endpoints as the maximum impedance of the newly obtained electrical circuit network design scheme.

[0060] After solving the maximum impedance of the newly obtained electrical circuit network design scheme, the obtained maximum impedance value can be substituted as the ground impedance into the aircraft power system simulation model (the aircraft power system simulation model can be a simulink model, which can include various modules such as power generation, transmission, distribution conversion, and load. The power system simulation models of different aircraft may be different, and can be set according to needs, not limited to the first embodiment) to determine the voltage value of the electrical load at each observation point.

[0061] In the first embodiment, a voltage drop constraint condition can be preset, and a judgment result of the voltage drop constraint condition can be obtained according to the voltage value of each observation point. Among them, the judgment result of the voltage drop constraint condition obtained according to the voltage value can include: comparing the voltage value of each observation point with the ideal voltage value, determining the voltage drop value, and judging whether the voltage drop constraint condition is met according to the voltage drop value. That is, for any observation point, the voltage value of the observation point is compared with the ideal voltage value to obtain the voltage drop value corresponding to the observation point. According to the voltage drop values ​​corresponding to each observation point, it can be judged whether the voltage drop constraint condition is met. For example, if the voltage drop values ​​corresponding to each observation point meet the preset conditions or are within the preset range, it is judged that the voltage drop constraint condition is met; or, if the voltage drop value corresponding to an observation point does not meet the preset conditions or is not within the preset range, it is judged that the voltage drop constraint condition is not met.

[0062] According to the judgment result of the voltage drop constraint condition (i.e., whether the voltage drop constraint condition is met), it can be determined whether the newly obtained electrical circuit network design scheme meets the requirements. Wherein, according to the judgment result of the voltage drop constraint condition, determining whether the newly obtained electrical circuit network design scheme meets the requirements may include: if the judgment result of the voltage drop constraint condition is that the voltage drop constraint condition is met, it means that the impedance of the electrical circuit network design scheme is acceptable, and the newly obtained electrical circuit network design scheme meets the requirements; or, if the judgment result of the voltage drop constraint condition is that the voltage drop constraint condition is not met, the newly obtained electrical circuit network design scheme does not meet the requirements.

[0063] S105: If it does not meet the requirements, a new electrical circuit network design scheme is determined, and impedance verification is performed on the new electrical circuit network design scheme to determine whether the new electrical circuit network design scheme meets the requirements.

[0064] In actual situations, after the above impedance verification, the electrical circuit network design may or may not meet the requirements.

[0065] If the electrical circuit network design scheme does not meet the requirements, a new electrical circuit network design scheme is determined, and impedance verification is performed on the newly obtained electrical circuit network design scheme in accordance with the above contents to determine whether the newly obtained electrical circuit network design scheme meets the requirements.

[0066] Determining a new electrical circuit network design solution may include: determining a new electrical circuit network design solution according to a rule for reducing the electrical circuit network impedance. Specifically, the rule for reducing the electrical circuit network impedance may include a variety of contents, such as increasing the cross-sectional area of ​​the flexible cable and / or using more metal structures and / or using metal structures with higher conductivity, which is not limited to the first embodiment.

[0067] If an electrical circuit network design scheme meets the requirements, then the electrical circuit network design scheme that meets the requirements can be used as a target design scheme and actually used in the electrical circuit network design of a composite aircraft or as an actual electrical circuit network scheme for a composite aircraft.

[0068] The following is a further description of the content of the first embodiment with reference to examples:

[0069] refer to Figure 3 , the electrical circuit network design scheme of the composite aircraft can be determined and impedance verification can be performed. Specifically, a three-dimensional model corresponding to the electrical circuit network design scheme is generated (such as Figure 2 As shown). Import the 3D model corresponding to the electrical circuit network design into the electromagnetic simulation software, and use the electromagnetic simulation software to solve the maximum impedance of the electrical circuit network design. In this example, select the two physically farthest endpoints on the 3D model of the electrical circuit network (theoretically, the two points with the farthest distance have the largest impedance value), and solve the impedance value between the two points as the maximum impedance value of the electrical circuit network design. In this example, the impedance value of the electrical circuit network is, for example, Figure 4 , Figure 5 shown.

[0070] Substitute the maximum impedance value of the electrical circuit network design into the aircraft power system simulation model (in this example, the aircraft power system simulation model is a simulink model, for example Figure 6 As shown in the figure), it serves as the grounding impedance.

[0071] Read the voltage value of each observation point to evaluate the impact of the electrical circuit network impedance on the power quality of the observation point, including whether the voltage value meets the voltage requirements of the electrical load. In this example, the two ends of the 230V electrical load are used as the observation points, and the voltage value of the two ends of the 230V electrical load is read. For example Figure 7 shown.

[0072] As mentioned above, taking the voltage across a 230V electrical load as an example, the three-phase voltages are observed to be 229.8V, 229.8V, and 229.9V, and the ideal voltage is 230V. The impact on the voltage does not exceed 0.2V (i.e., the voltage drop at each observation point does not exceed 0.2V), which is within an acceptable range. It is therefore judged that the voltage drop constraint is met, and the electrical circuit network design meets the requirements.

[0073] If it is determined that the voltage drop constraint condition is not met, the electrical circuit network design scheme is optimized, and the purpose of the optimization includes making the impedance of the electrical circuit network design scheme meet the requirements of the electrical load voltage. Through the optimization of the electrical circuit network design scheme, a new electrical circuit network design scheme can be obtained, and the impedance of the newly obtained electrical circuit network design scheme is further checked according to the above content to determine whether the newly obtained electrical circuit network design scheme meets the requirements.

[0074] Embodiment 1 can achieve the following beneficial effects:

[0075] In the prior art, when designing an electrical loop network, generally only the cross-sectional area is considered to be large enough to meet the temperature rise requirement when the current flows back, but the impedance is not considered. In fact, the impedance of the electrical loop network has an impact on the voltage drop of the electrical system.

[0076] In the first embodiment, the impedance of the electrical circuit network of the composite aircraft is checked by taking the voltage drop as a constraint condition, that is, judging whether the impedance of the electrical circuit network meets the requirements of the electrical load voltage, and then accurately judging whether the design scheme of the electrical circuit network meets the requirements, so as to obtain a design scheme of the electrical circuit network of the composite aircraft whose impedance meets the requirements of the electrical load voltage, thereby improving the design efficiency of the electrical circuit network of the composite aircraft and overcoming the problem in the prior art that the influence of the impedance of the electrical circuit network on the voltage drop of the electrical system is not considered.

[0077] In the first embodiment, during the design process of the electrical circuit network of the composite aircraft, the three-dimensional model of the electrical circuit network (i.e., the three-dimensional model corresponding to the electrical circuit network design scheme) is imported into the electromagnetic simulation software to solve the maximum impedance of the electrical circuit network, and the aircraft power supply simulation model is established in combination with the maximum impedance of the electrical circuit network to solve the influence of the electrical circuit network on the voltage of each observation point, and evaluate whether the impedance of the electrical circuit network meets the requirements, that is, whether the electrical circuit network design scheme meets the requirements, which can improve the accuracy of the electrical circuit network impedance evaluation. If the electrical circuit network design scheme does not meet the requirements, iterative optimization is carried out to determine a new electrical circuit network design scheme and continue to perform impedance verification until the electrical circuit network design scheme meets the requirements of the electrical load voltage, thereby completing the verification of the electrical circuit network impedance. Through this iterative optimization of the cyclic impedance verification, an electrical circuit network design scheme that meets the requirements can be obtained more quickly, and the efficiency of the composite aircraft electrical circuit network design can be improved.

[0078] In the first embodiment, the impedance of the electrical circuit network is checked with the voltage drop as a constraint, and the impact of the electrical circuit network impedance on the power quality of the observation point is evaluated, so that the impedance of the electrical circuit network design scheme meets the voltage requirements of the electrical load. Since the electrical circuit network impedance, voltage drop and power quality are comprehensively considered, the electrical circuit network design scheme that meets the requirements is more suitable for composite aircraft, and the electrical circuit network design effect is better.

[0079] In the first embodiment, the impedance of the electrical circuit network is checked with the voltage drop as a constraint, so that the impedance of the electrical circuit network design meets the voltage requirement of the electrical load. It can be used in the electrical circuit network design of composite aircraft and the field of EWIS harness components, and can reduce the influence of the impedance of the aircraft electrical circuit network on the voltage drop, thereby ensuring the safe and reliable operation of the aircraft electrical load, which is of great significance for ensuring the flight safety of the aircraft.

[0080] like Figure 8 As shown, the second embodiment of this specification provides a composite aircraft electrical circuit network impedance verification device based on voltage drop constraint corresponding to the method described in the first embodiment, the device comprising:

[0081] Design module 202, for determining an electrical circuit network design scheme for the composite aircraft; and if the electrical circuit network design scheme does not meet the requirements, determining a new electrical circuit network design scheme;

[0082] The checking module 204 is used to perform impedance checking on the newly obtained electrical circuit network design scheme after each determination of the electrical circuit network design scheme, so as to determine whether the newly obtained electrical circuit network design scheme meets the requirements;

[0083] Among them, the impedance check of the newly obtained electrical circuit network design scheme is carried out to determine whether the newly obtained electrical circuit network design scheme meets the requirements, including:

[0084] Solve the maximum impedance of the newly obtained electrical circuit network design, substitute the obtained maximum impedance value into the aircraft power system simulation model as the ground impedance, and determine the voltage value of the electrical load at each observation point;

[0085] A judgment result of a voltage drop constraint condition is obtained according to the voltage value, and whether a newly obtained electrical circuit network design scheme meets the requirements is determined according to the judgment result of the voltage drop constraint condition.

[0086] Optionally, solving for the maximum impedance of the newly obtained electrical circuit network design includes:

[0087] Electromagnetic simulation software is used to solve the maximum impedance of the newly obtained electrical circuit network design.

[0088] Optionally, solving for the maximum impedance of the newly obtained electrical circuit network design includes:

[0089] The three-dimensional model corresponding to the newly obtained electrical circuit network design scheme is imported into the electromagnetic simulation software, and the maximum impedance of the newly obtained electrical circuit network design scheme is solved by using the electromagnetic simulation software.

[0090] Optionally, solving for the maximum impedance of the newly obtained electrical circuit network design includes:

[0091] Select the two endpoints with the farthest physical distance on the newly obtained electrical circuit network, solve the impedance value between the two endpoints, and use the impedance value between the two endpoints as the maximum impedance of the newly obtained electrical circuit network design solution.

[0092] Optionally, determining whether the newly obtained electrical circuit network design scheme meets the requirements according to the judgment result of the voltage drop constraint condition includes:

[0093] If the judgment result of the voltage drop constraint condition is that the voltage drop constraint condition is met, the newly obtained electrical circuit network design scheme meets the requirements.

[0094] Optionally, the determination result of the voltage drop constraint condition obtained according to the voltage value includes:

[0095] The voltage value is compared with an ideal voltage value to determine a voltage drop value, and whether a voltage drop constraint condition is satisfied is determined based on the voltage drop value.

[0096] Optionally, determine the new electrical circuit network design including:

[0097] According to the rules of reducing the impedance of the electrical circuit network, a new electrical circuit network design scheme is determined.

[0098] The contents not described in detail in the second embodiment refer to the first embodiment. The second embodiment can achieve the same beneficial effects as the first embodiment. The above embodiments can be used in combination.

[0099] The above is only an embodiment of this specification and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A composite aircraft electrical circuit network impedance verification method based on voltage drop constraints, characterized in that: The method comprises: Determine the electrical circuit network design for composite aircraft; Each time the electrical circuit network design scheme is determined, the impedance check is performed on the newly obtained electrical circuit network design scheme to determine whether the newly obtained electrical circuit network design scheme meets the requirements; If it does not meet the requirements, a new electrical circuit network design scheme is determined, and impedance verification is performed on the newly obtained electrical circuit network design scheme to determine whether the newly obtained electrical circuit network design scheme meets the requirements; Among them, the impedance check of the newly obtained electrical circuit network design scheme is carried out to determine whether the newly obtained electrical circuit network design scheme meets the requirements, including: Solve the maximum impedance of the newly obtained electrical circuit network design, substitute the obtained maximum impedance value into the aircraft power system simulation model as the ground impedance, and determine the voltage value of the electrical load at each observation point; A judgment result of a voltage drop constraint condition is obtained according to the voltage value, and whether a newly obtained electrical circuit network design scheme meets the requirements is determined according to the judgment result of the voltage drop constraint condition.

2. The method according to claim 1, characterized in that Solving for the maximum impedance of the newly obtained electrical circuit network design includes: Electromagnetic simulation software is used to solve the maximum impedance of the newly obtained electrical circuit network design.

3. The method according to claim 1, characterized in that Solving for the maximum impedance of the newly obtained electrical circuit network design includes: The three-dimensional model corresponding to the newly obtained electrical circuit network design scheme is imported into the electromagnetic simulation software, and the maximum impedance of the newly obtained electrical circuit network design scheme is solved by using the electromagnetic simulation software.

4. The method according to any one of claims 1 to 3, characterized in that Solving for the maximum impedance of the newly obtained electrical circuit network design includes: Select the two endpoints with the farthest physical distance on the newly obtained electrical circuit network, solve the impedance value between the two endpoints, and use the impedance value between the two endpoints as the maximum impedance of the newly obtained electrical circuit network design solution.

5. The method according to claim 1, characterized in that According to the judgment result of the voltage drop constraint condition, determine whether the newly obtained electrical circuit network design scheme meets the requirements, including: If the judgment result of the voltage drop constraint condition is that the voltage drop constraint condition is met, the newly obtained electrical circuit network design scheme meets the requirements.

6. The method according to claim 1 or 5, characterized in that The judgment result of the voltage drop constraint condition obtained according to the voltage value includes: The voltage value is compared with an ideal voltage value to determine a voltage drop value, and whether a voltage drop constraint condition is satisfied is determined based on the voltage drop value.

7. The method according to claim 1, characterized in that Determine the new electrical circuit network design including: According to the rules of reducing the impedance of the electrical circuit network, a new electrical circuit network design scheme is determined.

8. A composite aircraft electrical circuit network impedance verification device based on voltage drop constraints, characterized in that: The device comprises: A design module for determining an electrical circuit network design scheme for a composite aircraft; and determining a new electrical circuit network design scheme if the electrical circuit network design scheme does not meet the requirements; A checking module is used to perform impedance checking on the newly obtained electrical circuit network design scheme after each determination of the electrical circuit network design scheme, so as to determine whether the newly obtained electrical circuit network design scheme meets the requirements; Among them, the impedance check of the newly obtained electrical circuit network design scheme is carried out to determine whether the newly obtained electrical circuit network design scheme meets the requirements, including: Solve the maximum impedance of the newly obtained electrical circuit network design, substitute the obtained maximum impedance value into the aircraft power system simulation model as the ground impedance, and determine the voltage value of the electrical load at each observation point; A judgment result of a voltage drop constraint condition is obtained according to the voltage value, and whether a newly obtained electrical circuit network design scheme meets the requirements is determined according to the judgment result of the voltage drop constraint condition.

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