A power supply and distribution system of a high-dynamic and high-coordination launch vehicle based on MBSE

Abstract

The application relates to the field of aerospace technology and provides a power supply and distribution system of a high-dynamic and high-collaborative launch vehicle based on MBSE, which comprises the following modules: a demand module, which collates system task demands to form power supply and distribution system demands; a logic architecture design module, which refines functions, designs logic composition, decomposes indexes and designs logic interfaces according to the system demands; a physical architecture design module, which comprehensively integrates the logic composition of the demands, defines different physical modules to realize the logic functions and establishes a physical system model; a test case module, which designs a function model, a test interface and a timing feature to form a system white-box function set; a single-machine modeling module, which refines the physical architecture design module to design a single-machine model; and a simulation module, which establishes a launch vehicle simulation model to verify whether the system design meets expected system design attributes and technical indexes; and the application improves the logic, collaboration and dynamics of power supply and distribution design through model design.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerospace technology, and in particular to a power supply and distribution system of a high-dynamic and high-collaborative launch vehicle based on MBSE. BACKGROUND

[0002] The launch vehicle is a typical complex system, and with the increasing number of tasks, it faces multiple challenges in the traditional development process: 1) each module of the system works independently, and the collaboration is insufficient; 2) the document-based design content management means is relatively inefficient, and the timeliness is very low, which greatly increases the error rate and risk; 3) the system design depends on downstream iteration, and the design verification period is long; 4) the system verification and system design cannot be closely corresponding and associated, and are limited by the scattered system design information, and it is difficult to realize the closed-loop integrated simulation verification in the design link. The above typical problems lead to problems such as mismatched interfaces and parameters, which cannot be exposed until the physical verification stage. Therefore, it is urgent to introduce new theories and methods in the design stage.

[0003] Model-based system engineering (MBSE) is a formalized application of modeling, which supports the requirements, design, analysis, verification and confirmation activities of the system, from the conceptual design stage to the later stage of development and life cycle. The transformation of MBSE development mode can correctly and unambiguously transfer the requirements, improve the design quality, realize the whole life cycle collaboration and improve the technical state control ability, and fully improve the efficiency of complex system development.

[0004] In the traditional design of the power supply and distribution system of a spacecraft, the designer often directly develops the physical layer design work after the system scheme design according to experience, and ignores the design of the logical architecture. The power supply and distribution system requirements and design scheme are often described in words and graphics, and are not modeled, so the design results cannot be traced back to the requirements and architecture. For a newly developed system, due to the lack of experience, this way often leads to mismatch between the initial design results and the requirements and excessive iterative design. SUMMARY

[0005] The purpose of the present application is to provide a power supply and distribution system of a high-dynamic and high-collaborative launch vehicle based on MBSE, which can carry out efficient work, high-dynamic and high-collaborative in the design stage, and can effectively guarantee the high reliability of the system and improve the efficiency of system development.

[0006] To achieve the above purpose, the present application provides a power supply and distribution system of a high-dynamic and high-collaborative launch vehicle based on MBSE, comprising the following steps:

[0007] The power supply and distribution system demand module is used for the power supply and distribution system designer to arrange the power supply and distribution system task demand according to the system task book, i.e. the power supply and distribution system task book proposed by the superior system, to standardize the design according to the demand specification to form the power supply and distribution system demand, to involve the cooperation between different fields and professions, to improve the cross-field communication efficiency, to reduce the project research and development cost, and to improve the project development rate through the power supply and distribution system demand module.

[0008] The power supply and distribution system logic architecture design module is used for the power supply and distribution system designer to perform the logic function refinement, the logic composition design, the index decomposition and the logic interface design on the power supply and distribution system demand according to the system task book.

[0009] The power supply and distribution system physical architecture design module is used for the power supply and distribution system designer to perform the logic composition synthesis on the power supply and distribution system demand according to the power supply and distribution system logic architecture design module, to define different physical modules to realize the logic function, to form the physical composition diagram according to the physical single machine for the logic composition synthesis result, to then perform the physical selection, to establish the physical system model, and the physical single machine can select the existing physical single machine or the newly developed physical single machine.

[0010] The power supply and distribution system test case module is used for the power supply and distribution system designer to design the power supply and distribution function model, the test interface and the timing characteristics according to the power supply and distribution logic architecture design module to form the power supply and distribution system white box function set, to construct the power supply and distribution system test case, and to verify the satisfaction and traceability of the power supply and distribution system demand module.

[0011] The power supply and distribution system single machine modeling module is used for the power supply and distribution system designer to continue to refine the physical architecture design module after the test case module to design the single machine model.

[0012] The power supply and distribution system simulation module is used for the power supply and distribution system designer to carry out the power supply and distribution system simulation verification according to the power supply and distribution logic design module and the single machine model, to establish the launch vehicle power supply and distribution system simulation model, and to verify whether the power supply and distribution system design meets the expected power supply and distribution system design attributes and technical indexes.

[0013] Preferably, in the power supply and distribution system demand module, the power supply and distribution system demand module needs the power supply and distribution system designer to continuously iterate and confirm through the stakeholders, the whole life cycle scene, the function scene, the performance index and the system level interface, to finally form the complete, correct and standard power supply and distribution system demand as the basis for the power supply and distribution system design work.

[0014] Preferably, in the power supply and distribution system demand module, the power supply and distribution system logic architecture design module further includes:

[0015] According to the power supply and distribution system context environment, system composition model and function requirement, the function scene of the system task book is expressed by the power supply and distribution system diagram and state diagram, the logic architecture design phase of the power supply and distribution system is completed, and the function requirement in the system task book is met.

[0016] Preferably, in the power supply and distribution system physical architecture design module, the kind and quantity of the physical single machine are specified in the logic composition requirement, forming the logic composition requirement of the battery, the autonomous power distributor and the power supply and distribution cable network, wherein the power supply and distribution cable network connects the internal and external systems of the power supply and distribution system.

[0017] Preferably, in the power supply and distribution system physical architecture design module, the power supply and distribution system supplies power for the power consumption system, and the power consumption of the physical single machine will affect the design of the power supply and distribution system, so the physical composition diagram of the power consumption system needs to be established.

[0018] Preferably, after the power supply and distribution system enters the working state, the battery starts to normally supply and distribute power, the physical single machine starts to work after being powered, the power supply and distribution system detects the power supply state, the rocket is switched from the ground power supply to the rocket self-power supply after receiving the power switching instruction sent by the power supply and distribution system, and waits for the rocket to take off. When the rocket receives the take-off signal sent by the autonomous power distributor after detecting that the take-off contact is popped out, when the overload, short circuit or other emergency fault occurs in the electrical system and load on the rocket, the ground launch control system in the external system sends an emergency power-off instruction to the power supply and distribution system through the power supply and distribution cable network, the power supply and distribution system in the power supply and distribution system is powered off, and the working power supply of the autonomous power distributor is disconnected, and the power supply and distribution system enters the power-off state.

[0019] Preferably, the power consumption system composition model comprises:

[0020] The composition modules of the control system physical single machine and the measurement system physical single machine, the control system physical single machine and the measurement system physical single machine continuously work in the process of rocket flight, the power consumption is a fixed value and does not change with the flight time sequence, in the control system physical single machine and the measurement system physical single machine module, the current value attribute is added, and the numerical value of the current value is set as the basis for parameter analysis model and system simulation;

[0021] The power system composition module is mainly composed of time sequence loads, and the load current value is continuously adjusted with the rocket flight time sequence. When the time sequence load is more, the time sequence load is respectively modeled, and in the initial state, the time sequence load switch is disconnected, and the load current value is zero.

[0022] Preferably, the power supply system test case module is established based on the refinement and decomposition of the scenario of the power supply system test case, forms an interface of the context model of the power supply system, guarantees the correctness of the power supply system composition scheme, and perfects the power supply system requirement module, the function model, the parameter model and the power supply system physical architecture design module.

[0023] Preferably, in the power supply system simulation module, the establishment of the power supply system discharge simulation model further includes:

[0024] a time sequence load composition model, a time sequence load current calculation model, time sequence load activity and discharge simulation configuration, wherein in the power supply system discharge simulation process, the flight time sequence changes the time sequence load switch state, thereby changing the load current value over time, and completing current curve simulation, i.e., discharge curve.

[0025] Preferably, the power supply system discharge simulation model first performs time sequence load current calculation model, time sequence load activity and discharge simulation configuration, and finally performs launch vehicle power supply system discharge simulation and outputs the power supply system discharge curve. The simulation process simulates the power supply system power supply scene for time sequence loads in the flight process of the launch vehicle, evaluates the discharge curve, and verifies the correctness of the power supply system.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] 1) Improve the logicality of power supply design

[0028] In the traditional spacecraft power supply system design, designers often design the physical layer directly after the system scheme design according to experience, and ignore the design of the logical architecture. This leads to problems such as incomplete logical analysis and insufficient design measures. Developing logical modeling can effectively avoid such risks.

[0029] 2) Improve the collaboration of the power supply design process

[0030] The power supply system requirement and design scheme are often described in words and graphics, and are not modeled, so the design results cannot be traced back to the requirement and architecture. For new research and development systems, due to lack of experience, this approach often leads to mismatch between the initial design results and the requirement and excessive iterative design. Based on the model, the modeling level of the different design models can be modeled in a highly collaborative manner to form a rapid collaborative design.

[0031] 3) Improve the dynamicity of the power supply design process

[0032] Traditionally, changes in the design process are communicated through documents, which suffers from poor timeliness and comprehensiveness, and is prone to omissions. Model-based approaches, on the other hand, enable highly dynamic change iterations with high real-time performance. Changes at a single point can be analyzed and communicated in real time, including impact and compatibility analysis. Attached Figure Description

[0033] Figure 1 A schematic diagram of the power supply and distribution system of a high-dynamic, highly cooperative launch vehicle based on MBSE provided in an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the power supply and distribution model provided for the power supply and distribution system of a high-dynamic, highly cooperative launch vehicle based on MBSE, as provided in an embodiment of the present invention;

[0035] Figure 3 This is a functional model diagram of the power supply and distribution system of a high-dynamic, highly coordinated launch vehicle based on MBSE, provided in an embodiment of the present invention. Detailed Implementation

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0037] To facilitate understanding of the embodiments of the present invention, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments, and these embodiments do not constitute a limitation on the embodiments of the present invention.

[0038] like Figure 1 As shown, this embodiment provides a power supply and distribution system for a high-dynamic, highly coordinated launch vehicle based on MBSE, including:

[0039] The power supply and distribution system requirements module involves the power supply and distribution system designer compiling the power supply and distribution system task requirements based on the system task book, i.e., the "Power Supply and Distribution System Task Book" proposed by the superior system. Following the requirements specifications, these requirements are standardized and designed to form the power supply and distribution system requirements. The system requirements for launch vehicles originate from the top-level requirements of numerous stakeholders, involving collaboration between different fields and professions. Inconsistent requirements descriptions can increase ambiguity in the system designer's understanding of the power supply and distribution system, increase communication costs, and potentially transmit incorrect input to downstream professions, severely impacting model development efficiency and development cycle. Therefore, effectively defining, decomposing, and communicating the requirements for launch vehicles can improve cross-domain communication efficiency, reduce project development costs, and increase project development rate.

[0040] The power supply and distribution system logic architecture design module is used by the power supply and distribution system designer to perform logical function refinement, logical composition design, index decomposition, and logical interface design on the power supply and distribution system requirements according to the system task book.

[0041] The power supply and distribution system physical architecture design module is used by the power supply and distribution designer to perform logical composition synthesis on the power supply and distribution system requirements according to the power supply and distribution system logic architecture design module, define different physical modules to realize logical functions, and according to the logical composition synthesis result, form a physical composition diagram based on physical single machines, then perform physical selection, establish a physical system model, and the physical single machines can be selected from existing physical single machines or newly developed physical single machines.

[0042] The power supply and distribution system test case module is used by the power supply and distribution designer to design a power supply and distribution function model, a test interface, and a timing feature based on the power supply and distribution logic architecture design module, form a power supply and distribution system white box function set, construct a power supply and distribution system test case, and verify the satisfaction and traceability of the power supply and distribution system requirement module.

[0043] The power supply and distribution system single machine modeling module is used by the power supply and distribution designer to continue to refine the physical architecture design module after the test case module, and design a single machine model.

[0044] The power supply and distribution system simulation module is used by the power supply and distribution designer to carry out power supply and distribution system simulation verification based on the power supply and distribution logic design module and the single machine model, establish a launch vehicle power supply and distribution system simulation model, and verify whether the power supply and distribution system design meets the expected power supply and distribution system design attributes and technical indicators.

[0045] As shown in Figure 2 The power supply and distribution system requirement module needs to be continuously iterated and confirmed by the power supply and distribution designer through the stakeholders, the full life cycle scenario, the function scenario, the performance index, and the system-level interface, and finally forms a complete, correct, and standardized power supply and distribution system requirement as the basis for power supply and distribution system design. Specifically, in this embodiment, according to the "Power Supply and Distribution System Task Book" proposed by the superior system, the power supply and distribution stakeholder requirements are sorted out, and after being standardized according to the requirement specification, the system requirements are formed. The unconfirmed system requirements cannot directly guide the design work, and the power supply and distribution system designer needs to confirm the completeness of the power supply and distribution system requirements through the power supply and distribution stakeholders, confirm the function requirements through the power supply and distribution system task scenarios, confirm the performance requirements through the performance indexes, and confirm the interface requirements through the interfaces. Through the above process, the vague and incomplete stakeholder requirements are finally converted into complete, correct, and standardized system requirements as the basis for power supply and distribution system design.

[0046] More preferably, the power supply and distribution system logic architecture design module further includes the following stages in the power supply and distribution system logic architecture design stage:

[0047] According to the power supply and distribution system context environment, system composition model and function requirement, the power supply and distribution system diagram and state diagram express the function scene of system task book, complete the power supply and distribution system logic architecture design stage, satisfy the function requirement in system task book.

[0048] Preferably, in the power supply and distribution system physical architecture design module, the kind and quantity of physical single machine in logic composition requirement are clear, form the logic composition requirement of battery, self-power adapter and power supply and distribution cable network, wherein the power supply and distribution cable network connects the internal and external system of power supply and distribution system, specifically, the battery provides the electric energy required by the working of electric single machine, the self-power adapter completes each function of power supply system, the cable network connects each module in power supply and distribution system and other system, in the battery item, the indexes concerned by the designer are: battery temperature, battery weight, battery output voltage, discharge current, battery working time. In the self-power adapter item, the indexes concerned by the designer are: power adapter weight, power supply path, power adapter power consumption, working voltage.

[0049] Preferably, in the power supply and distribution system physical architecture design module, the power supply and distribution system supplies power for the power consumption system, the power consumption of physical single machine will affect the design of power supply and distribution system, therefore, it is necessary to establish the physical composition diagram of power consumption system.

[0050] As Figure 3As shown, after the power supply and distribution system enters the working state, the battery starts normal power supply and distribution, the physical single machine starts working after being powered, the power supply and distribution system detects the power supply state, after receiving the power transfer instruction sent by the power supply and distribution system, the rocket is switched from ground power supply to self-power supply, waits for the rocket to take off, and the autonomous power distributor sends a take-off signal after detecting that the take-off contact is popped out. When the rocket electrical system and load on the rocket have overload, short circuit or other emergency failures, the ground measurement and control system in the external system sends an emergency power-off instruction to the power supply and distribution system through the power supply and distribution cable network, the emergency power-off in the power supply and distribution system, the working power supply of the autonomous power distributor is disconnected, and the power-off state is entered. Specifically, in this embodiment, after the power supply and distribution system enters the working state, it starts normal power supply and distribution, each power-consuming physical single machine is powered on and starts working, and the power supply and distribution system immediately starts monitoring the power supply state and starts automatically warming the battery. After receiving the power transfer instruction, the power transfer relay is closed, the battery on the rocket starts working, the power supply and distribution system sends a power transfer ready instruction, and after receiving the power transfer instruction, the automatic warming function needs to be disabled to avoid the battery warming itself. After the power transfer is completed, the rocket is waited to take off, and the autonomous power distributor sends a take-off signal after detecting that the take-off contact is popped out. The ground measurement and control system and the measurement system receive the take-off signal, and when a short circuit occurs in the protection path, the corresponding path enters the short circuit protection state to avoid affecting other single machines, especially the control system single machine. When the rocket electrical system and load on the rocket have overload, short circuit or other emergency failures, the ground measurement and control system sends an emergency power-off instruction to the power supply and distribution system, the emergency power-off relay in the power supply and distribution system is powered on, the working power supply of the power distributor is disconnected, and the power-off state is entered.

[0051] Preferably, the power-consuming system composition model includes:

[0052] The composition modules of the control system physical single machine and the measurement system physical single machine continuously work during the rocket flight process, the power consumption is a fixed value and does not change with the flight time sequence, the current value attribute is added in the control system physical single machine and the measurement system physical single machine module, and the numerical value of the current value is set as a basis for parameter analysis model and system simulation;

[0053] The power system composition module is mainly composed of time sequence loads, and the load current value is continuously adjusted with the rocket flight time sequence. When there are many time sequence loads, the time sequence loads are respectively modeled. In the initial state, the time sequence load switches are all disconnected, and the load current value is zero.

[0054] More preferably, the launch vehicle power supply and distribution system is a general term for devices that provide, distribute and manage power for rocket electrical devices and connect the power grid. The rocket electrical system integrates the functions of rocket power supply, distribution and ground management and control. A new type of launch vehicle power supply and distribution system adopts a comprehensive electronic design scheme and a full-rocket integrated power supply and distribution mode, which reduces the number of physical single machines on the rocket and effectively improves the system reliability and safety.

[0055] Preferably, the establishment of the power supply and distribution system test case module is based on the refinement and decomposition of the scenario of the power supply and distribution system test case, forms an interface of the context model of the power supply and distribution system, guarantees the correctness of the power supply and distribution system composition scheme, perfects the power supply and distribution system requirement module, the function model and the parameter model and the power supply and distribution system physical architecture design module, constructs the test case, and can verify the satisfaction and traceability of the requirement.

[0056] Preferably, in the power supply and distribution system simulation module, the establishment of the power supply and distribution system discharge simulation model further includes:

[0057] The time sequence load composition model, the time sequence load current calculation model, the time sequence load activity and the discharge simulation configuration, wherein in the power supply and distribution system discharge simulation process, the flight time sequence changes the time sequence load switch state, thereby changing the load current value with time, completing the current curve simulation, that is, the discharge curve, and fully embodying the advantages of the MBSE method in the simulation verification of a complex system.

[0058] Preferably, the power supply and distribution system discharge simulation model first performs the time sequence load current calculation model, the time sequence load activity and the discharge simulation configuration, finally performs the launch vehicle power supply and distribution system discharge simulation, and outputs the power supply and distribution system discharge curve. The simulation process simulates the power supply and distribution system power supply scene for the time sequence load in the flight process of the launch vehicle, evaluates the discharge curve, verifies the correctness of the power supply and distribution system, and discovers problems such as unreasonable power supply path design, and the selection of the battery and the wire failing to meet the requirement in a timely manner.

Claims

1. A power supply and distribution system for a high-dynamic, highly coordinated launch vehicle based on MBSE, characterized in that, The power supply system includes: A power supply system demand module for providing a power supply system designer to sort out the power supply system task demand according to the system task book, and to perform standardized design on the power supply system according to the demand specification to form a power supply system demand; A power supply system logical architecture design module, in which the power supply system designer refines the logical function, designs the logical composition, decomposes the index, and designs the logical interface of the power supply system demand according to the system task book; A power supply system physical architecture design module, in which the power supply system designer synthesizes the logical composition of the power supply system demand according to the power supply system logical architecture design module, defines different physical modules to realize the logical function, forms a physical composition diagram according to the physical single machine for the logical composition synthesis result, and then performs physical selection to establish a physical system model; A power supply system test case module, in which the power supply system designer designs a power supply function model, a test interface, and a timing feature according to the power supply system logical architecture design module to form a power supply system white box function set; A power supply system single machine modeling module, in which the power supply system designer continues to refine the physical architecture design module after the test case module to design a single machine model; A power supply system simulation module, in which the power supply system designer carries out simulation verification of the power supply system according to the power supply system logical architecture design module and the single machine model, establishes a launch vehicle power supply system simulation model, and verifies whether the power supply system design meets the expected power supply system design attributes and technical index; In the power supply system physical architecture design module, the type and quantity of the physical single machine are specified in the logical composition demand to form the logical composition demand of the battery, the autonomous power distributor, and the power supply cable network, in which the power supply cable network connects the internal and external systems of the power supply system; After the power supply system enters the working state, the battery starts normal power supply, the physical single machine starts working after being powered on, the power supply system detects the power supply state, the rocket is switched from ground power supply to rocket self-power supply after receiving the power transfer instruction from the power supply system, and waits for the rocket to take off. When the rocket electrical system and load overload, short circuit, or other emergency failures occur, the ground launch control system in the external system sends an emergency power-off instruction to the power supply system through the power supply cable network, the power supply system is powered off in an emergency, the autonomous power distributor working power is disconnected, and the power supply system enters the power-off state; The power consumption system includes: A composition module of the control system physical single machine and the measurement system physical single machine, which continuously work during the rocket flight process, and the power consumption is a fixed value that does not change with the flight time sequence. In the control system physical single machine and the measurement system physical single machine module, the current value attribute is added, and the numerical value of the current value is set as a parameter analysis model and system simulation basis. The power system composition module is mainly composed of time sequence loads, and the load current value is adjusted with the time sequence of the rocket flight. When the time sequence load is more, the time sequence load is modeled respectively. In the initial state, the time sequence load switch is disconnected, and the load current value is zero; In the power supply and distribution system simulation module, a simulation model of the power supply and distribution system of the launch vehicle is established, which further includes: The time sequence load composition model, the time sequence load current calculation model, the time sequence load activity and the discharge simulation configuration, wherein in the discharge simulation process of the power supply and distribution system, the flight time sequence changes the state of the time sequence load switch, thereby changing the load current value with time, and completing the current curve simulation, that is, the discharge curve.

2. The MBSE-based power distribution system of a high dynamic and high synergic launch vehicle according to claim 1, characterized in that, In the power supply and distribution system requirement module, the power supply and distribution system requirement module needs the power supply and distribution system designer to continuously iterate and confirm through the stakeholders, the whole life cycle scene, the function scene, the performance index, and the system level interface. Finally, a complete, correct and standard power supply and distribution system requirement is formed as the basis for the power supply and distribution system design work.

3. The MBSE-based power distribution system of a high dynamic and high synergy launch vehicle of claim 1, wherein, The power supply and distribution system logic architecture design module further includes: According to the power supply and distribution system context environment, the system composition model and the function requirement, the power supply and distribution system diagram and the state diagram are established to express the function scene of the system task book, complete the power supply and distribution system logic architecture design stage, and meet the function requirement in the system task book.

4. The MBSE-based power distribution system of a high dynamic and high synergy launch vehicle of claim 1, wherein, In the power supply and distribution system physical architecture design module, the power supply and distribution system supplies power for the power consumption system, and the physical single machine power consumption will affect the power supply and distribution system design. Therefore, the physical composition diagram of the power consumption system needs to be established.

5. The MBSE-based power distribution system of a high dynamic and high synergy launch vehicle of claim 1, wherein, The establishment of the power supply and distribution system test case module is based on the refinement and decomposition of the scene of the power supply and distribution system test case, forms the interface of the context model of the power supply and distribution system, guarantees the correctness of the power supply and distribution system composition scheme, and perfects the power supply and distribution system requirement module, the function model and the parameter model and the power supply and distribution system physical architecture design module.

6. The MBSE-based power distribution system of a high dynamicity and high synergy launch vehicle according to claim 1, wherein, The power supply and distribution system discharge simulation model first performs the time sequence load current calculation model, the time sequence load activity and the discharge simulation configuration, and finally performs the discharge simulation of the power supply and distribution system of the launch vehicle, and outputs the discharge curve of the power supply and distribution system. The simulation process simulates the power supply scene of the power supply and distribution system for the time sequence load in the flight process of the launch vehicle, evaluates the discharge curve, and verifies the correctness of the power supply and distribution system.

Images