Power system power compensation method based on oxygen distribution and oxygen distribution system

Abstract

The invention provides a power system power compensation method based on oxygen distribution and an oxygen distribution system, and relates to the technical field of vehicle-mounted oxygen production, and the method comprises the following steps: determining the oxygen production amount and the oxygen demand amount of a passenger compartment; judging whether redundant oxygen exists or not according to the oxygen production amount and the oxygen demand amount; if it is determined that the redundant oxygen exists, the redundant oxygen is distributed to the air inlet end of the power system, so that power compensation of the power system is achieved; and if it is determined that no redundant oxygen exists, the oxygen production amount is increased based on the oxygen consumption amount of the power system. Oxygen supply can be carried out by considering overall operation of a vehicle power system and physiological needs of people.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle-mounted oxygen production, in particular to a power system power compensation method based on oxygen distribution and an oxygen distribution system. BACKGROUND

[0002] The existing power system faces problems of insufficient fuel combustion, increased fuel consumption and insufficient power in high-altitude areas. The power compensation methods mainly include the following: 1. Increasing power through turbocharging, but there are defects of high cost and insufficient power at low speed; 2. Using a vehicle oxygen production device to separate nitrogen and oxygen from compressed air, generate high-concentration oxygen, mix with air and input into the power system, and adjust the oxygen supply through a control valve; 3. Through a small oxygen generator combined with a gas pressure control switch, pure oxygen is generated and delivered according to atmospheric pressure, mixed with the intake air of the power system to improve combustion efficiency and output power, thereby alleviating the influence of high-altitude hypoxia on power performance.

[0003] The existing technologies all focus on power system intake oxygen compensation, generate high-concentration oxygen or pure oxygen through turbocharging, nitrogen-oxygen separation device or small oxygen generator, and mix it with air to enter the combustion chamber to improve combustion efficiency and output power. However, these methods only focus on combustion compensation of the power system and cannot realize simultaneous oxygen supply to the passenger cabin, resulting in insufficient oxygen in the passenger cabin although the power performance is improved in high-altitude environment, which makes it difficult to balance the overall operation of the vehicle power system and the physiological needs of personnel. SUMMARY

[0004] The present application provides a power system power compensation method based on oxygen distribution and an oxygen distribution system, which can balance the overall operation of the vehicle power system and the physiological needs of personnel for oxygen supply.

[0005] In a first aspect of the present application, a power system power compensation method based on oxygen distribution is provided, which comprises: determining the oxygen production amount and the oxygen demand amount of the passenger cabin; judging whether there is redundant oxygen according to the oxygen production amount and the oxygen demand amount; if it is determined that there is redundant oxygen, the redundant oxygen is distributed to the power system intake end to realize power compensation of the power system; if it is determined that there is no redundant oxygen, the oxygen production amount is increased based on the oxygen demand amount of the power system.

[0006] On the basis of the above technical solution, preferably, if it is determined that there is redundant oxygen, the redundant oxygen is distributed to the power system intake end to realize power compensation of the power system, specifically comprising: introducing the redundant oxygen into an intake end of the power system, mixing the redundant oxygen with air, and detecting an oxygen volume fraction of the mixed gas; Based on the oxygen volume fraction, calculating an oxygen flow allowed to be injected into the intake pipeline according to a preset control algorithm, and outputting a corresponding duty cycle instruction to adjust the flow of the injected oxygen.

[0007] Based on the oxygen volume fraction, calculating an oxygen flow allowed to be injected into the intake pipeline according to a preset control algorithm, and outputting a corresponding duty cycle instruction to adjust the flow of the injected oxygen. Based on historical oxygen generation conditions and historical oxygen demand, determining a feedforward oxygen demand mass flow of the power system, and taking the feedforward oxygen demand mass flow as an input of duty cycle mapping; Using a calibrated actuator flow and duty cycle characteristic, mapping the feedforward oxygen demand mass flow into a feedforward duty cycle instruction to form a signal capable of directly driving a proportional distribution valve; Comparing the oxygen volume fraction with a target intake oxygen volume fraction of the power system to obtain a control deviation, using a proportional integral corrector to obtain a duty cycle correction amount as a closed-loop compensation for the feedforward duty cycle instruction; Superimposing the duty cycle correction amount and the feedforward duty cycle instruction to obtain a comprehensive duty cycle instruction, and taking the comprehensive duty cycle instruction as an input of amplitude limiting processing; After obtaining the comprehensive duty cycle instruction, applying physical amplitude limiting and safety amplitude limiting to obtain a final duty cycle output; Taking the final duty cycle output as an execution signal to adjust the flow of the injected oxygen.

[0008] Based on the oxygen volume fraction, calculating an oxygen flow allowed to be injected into the intake pipeline according to a preset control algorithm, and outputting a corresponding duty cycle instruction to adjust the flow of the injected oxygen. According to a difference between a historical oxygen generation amount and a historical oxygen amount of the passenger cabin in a previous period, calculating a redundant oxygen mass flow, and taking the redundant oxygen mass flow as a starting input of the current period; Combining a power system intake mass flow estimated in a previous period and a target intake oxygen volume fraction set in the current period to solve a theoretical compensation oxygen mass flow; Introducing a safety threshold and calculating a maximum oxygen mass flow allowed as a boundary of feedforward clipping; Taking a minimum value among the redundant oxygen mass flow, the theoretical compensation oxygen mass flow, and the maximum oxygen mass flow as the feedforward oxygen demand mass flow.

[0009] On the basis of the above technical solutions, preferably, after the comprehensive duty cycle instruction is obtained, physical limiting and safety limiting are applied, and a final duty cycle output is obtained, the method further comprises: After the final duty cycle is output, a new oxygen volume fraction response of the mixed gas is generated in the current period, and a new measured intake oxygen volume fraction is output by the oxygen concentration sensor at the beginning of the next sampling period, the new measured intake oxygen volume fraction enters feedback deviation calculation, triggers the redundant oxygen mass flow calculation input of the next period, and thus a periodic closed-loop regulation is formed.

[0010] On the basis of the above technical solutions, preferably, the oxygen volume fraction is used to calculate the allowed oxygen flow injected into the intake pipeline according to a preset control algorithm, and a corresponding duty cycle instruction is output to adjust the flow of injected oxygen, and specifically includes: When it is detected that the oxygen volume fraction is less than a safety threshold, the current compensation oxygen supply state is maintained; When it is detected that the oxygen volume fraction is greater than or equal to the safety threshold, the oxygen supply to the power system port is reduced or cut off, thereby ensuring combustion safety.

[0011] On the basis of the above technical solutions, preferably, the oxygen demand amount of the passenger cabin is determined, and specifically includes: The number of passengers and the activity intensity are determined, an equivalent model of passenger metabolic oxygen consumption is constructed based on the number of passengers and the activity intensity, and the passenger metabolic oxygen consumption amount is obtained; Based on the influence of environmental pressure and cabin temperature on metabolic level, the passenger metabolic oxygen consumption amount is corrected to obtain a corresponding correction value; Based on the relationship between the passenger metabolic oxygen consumption amount and the respiratory quotient, the carbon dioxide generation rate in the cabin is determined, and the ventilation flow required to meet the carbon dioxide limit value is calculated, thereby determining the oxygen loss amount caused by ventilation; The deviation between the correction value, the oxygen loss amount, and the set target oxygen volume fraction in the cabin is combined to construct the mass conservation and dynamic convergence constraint of the oxygen volume fraction in the passenger cabin, and the oxygen demand molar flow of the passenger cabin is determined to obtain the oxygen demand amount.

[0012] In a second aspect of the present application, an oxygen distribution system is provided, characterized in that the oxygen distribution system comprises an oxygen generation module, a buffer oxygen storage tank, a pressure reducing valve, a three-way oxygen distribution module, and an intelligent control module, wherein: The oxygen generation module is used to generate oxygen; The buffer oxygen storage tank is used to store the oxygen generated by the oxygen generation module, neutralize the pressure pulsation of the oxygen generated by the oxygen generation module, and provide flow buffering for the instantaneous oxygen demand of the power system; The pressure reducing valve is used for reducing the pressure of oxygen output by the buffer oxygen storage tank to atmospheric pressure to meet the working requirement of the three-way oxygen distribution module. The input port of the three-way oxygen distribution module is connected to the outlet of the pressure reducing valve, and the two output ports of the three-way oxygen distribution module are connected to the passenger cabin oxygen supply pipeline and the power system oxygen supply pipeline respectively, receive the instruction of the intelligent control module, and dynamically adjust the oxygen flow ratio to the passenger cabin oxygen supply pipeline and the power system oxygen supply pipeline, so as to accurately control the injected oxygen mass flow. The intelligent control module is in communication connection with the oxygen production module, the buffer oxygen storage tank, the pressure reducing valve and the three-way oxygen distribution module, and is used for executing any one of the above methods.

[0013] In a third aspect of the application, an electronic device is provided, comprising a processor, a memory, a user interface and a network interface, the memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory to make the electronic device execute the method according to any one of the above aspects.

[0014] In a fourth aspect of the application, a computer readable storage medium is provided, which stores instructions, when the instructions are executed, the method according to any one of the above aspects is executed.

[0015] In summary, the one or more technical solutions provided in the embodiments of the application have at least the following technical effects or advantages: 1. The application introduces a priority coordination mechanism of oxygen demand for the passenger cabin and power system power compensation in the same oxygen distribution system. First, the oxygen demand of the passenger cabin is taken as a rigid constraint to ensure that the physiological safety of the passengers is met. Then, the difference between the oxygen production amount and the demand amount of the passenger cabin is determined to determine the redundant oxygen and distribute it to the air inlet of the power system, so that the life support of the passenger cabin and the combustion compensation of the power system are realized at the same time without additional energy consumption and hardware burden, so that the vehicle can balance the overall operation performance and the oxygen supply of personnel physiological needs.

[0016] 2. By periodically calculating the redundant oxygen mass flow and combining it with the theoretical demand and safety threshold, a dynamic feedforward demand is formed, so that the use of redundant oxygen is adaptive and safe.

[0017] 3. A double-channel control framework coupled with feedforward and feedback is constructed, which utilizes the feedforward algorithm to quickly match the working condition demand, and realizes closed-loop fine tuning through oxygen volume fraction feedback to ensure control accuracy and real-time performance, and avoid over-oxygen or insufficient oxygen supply caused by environmental fluctuations or measurement errors.

[0018] 4. A dual constraint mechanism of physical limiting and safety limiting is introduced, a multi-layer protection boundary is set in the integrated duty ratio output stage, and it is ensured that the oxygen injection meets the actuator capacity range and does not break the combustion safety threshold of the power system.

[0019] 5. A physiological modeling method for establishing the oxygen demand of the passenger cabin is established, multi-dimensional factors such as the number of passengers, activity intensity, environmental pressure, cabin temperature and carbon dioxide limit are uniformly included in the mass conservation and dynamic convergence constraint, the precise calculation of the oxygen supply demand is realized, and the scientificity and individual adaptability of the oxygen supply scheduling are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a flowchart of a power system power compensation method based on oxygen distribution disclosed by the embodiment of the present application; Figure 2 is a schematic diagram of an oxygen distribution system disclosed by the embodiment of the present application; Figure 3 is a power system power compensation control framework based on oxygen distribution disclosed by the embodiment of the present application; Figure 4 is a structural schematic diagram of an electronic device disclosed by the embodiment of the present application.

[0021] The reference signs are described as follows: 201, oxygen production module; 202, buffer oxygen storage tank; 203, pressure reducing valve; 204, three-way oxygen distribution module; 205, intelligent control module; 401, processor; 402, communication bus; 403, user interface; 404, network interface; 405, memory. DETAILED DESCRIPTION

[0022] In order for those skilled in the art to better understand the technical solutions in the specification, the technical solutions in the specification will be clearly and completely described below in combination with the drawings in the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0023] In the description of the embodiments of the present application, the words such as "for example" or "for instance" are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "for example" or "for instance" are intended to present the relevant concept in a specific way.

[0024] In the description of the embodiments of the present application, the term "a plurality of" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.

[0025] The existing power system generally faces the problems of insufficient fuel combustion, increased fuel consumption and insufficient power in high altitude areas. Common compensation methods include improving power through turbocharging, generating high concentration oxygen by nitrogen-oxygen separation device to supplement intake air, and generating pure oxygen by small oxygen generator combined with air pressure control switch to improve combustion efficiency. However, these methods only compensate for the combustion of the power system and fail to achieve simultaneous oxygen supply to the passenger cabin, resulting in insufficient oxygen in the passenger cabin while improving the power performance, making it difficult to balance the operation of the power system and the physiological needs of the passengers.

[0026] The present embodiment discloses a power system power compensation method based on oxygen distribution, referring to Figure 1 , comprising the following steps S110-S130: S110, determining the oxygen production amount and the oxygen demand amount of the passenger cabin.

[0027] In one possible implementation, the oxygen production amount and the oxygen demand amount of the passenger cabin are determined, wherein the oxygen demand amount is determined, specifically including: determining the number of passengers and the activity intensity, constructing an equivalent model of passenger metabolic oxygen consumption based on the number of passengers and the activity intensity to obtain the passenger metabolic oxygen consumption amount; correcting the passenger metabolic oxygen consumption amount based on the influence of environmental pressure and cabin temperature on metabolic level to obtain the corresponding correction value; determining the cabin carbon dioxide generation rate based on the relationship between passenger metabolic oxygen consumption amount and respiratory quotient, and calculating the ventilation flow required to meet the carbon dioxide limit value to determine the oxygen loss amount caused by ventilation; combining the deviation between the correction value, the oxygen loss amount and the set target oxygen volume fraction in the cabin, constructing the mass conservation and dynamic convergence constraint of the oxygen volume fraction in the passenger cabin, determining the oxygen demand molar flow of the passenger cabin, and obtaining the oxygen demand amount.

[0028] Specifically, the equivalent model of passenger metabolic oxygen consumption is constructed by the number of passengers and the activity intensity. First, the statistical result of the number of passengers and the activity intensity calibration coefficient of each passenger are input to obtain the baseline value of the passenger metabolic oxygen consumption amount as the upstream input for subsequent correction; the baseline value is given by the following formula:

[0029] in, Number of passengers; For the first The activity intensity coefficient of each passenger is determined within the specified range based on resting, light physical and heavy physical work conditions. This is the constant calibration value for the resting baseline oxygen consumption molar flow rate of a single person; The baseline molar flow rate for occupant metabolic oxygen consumption is used to provide input for subsequent environmental remediation.

[0030] After obtaining the baseline value for occupant metabolic oxygen consumption, the baseline value is multiplicatively corrected to account for the combined effects of ambient pressure and cabin temperature on metabolic rate and ventilation efficiency. This corrected value serves as the upstream input for calculating carbon dioxide production rate and ventilation flow rate. The correction is given by the following formula:

[0031] in, The corrected molar flow rate for occupant metabolic oxygen consumption; Due to environmental pressures; The cabin temperature; The environmental pressure correction factor is a calibration function that changes monotonically with environmental pressure and is used to characterize the effect of altitude changes on effective ventilation. is the cabin temperature correction factor, and is the calibration function that varies with cabin temperature, used to characterize the modulation of metabolic levels by the thermal environment; This serves as input for the next step of solving for the carbon dioxide production rate and estimating ventilation-related oxygen loss.

[0032] After obtaining the corrected value for occupant metabolic oxygen consumption, a one-to-one correspondence is established between carbon dioxide production rate and occupant metabolic oxygen consumption based on the respiratory quotient. This allows for the calculation of the ventilation flow rate required to meet the carbon dioxide volume fraction limit, thereby determining the oxygen loss caused by ventilation. This oxygen loss serves as the loss input for the mass conservation and dynamic convergence constraints of the cabin oxygen volume fraction. The correspondence and flow rate calculation are given by the following formula:

[0033]

[0034]

[0035] in, Molar flow rate of carbon dioxide production rate; The respiratory quotient is determined by taking values ​​within a specified range based on diet and activity intensity. The required ventilation molar flow rate to meet the carbon dioxide volume fraction limit; The target upper limit for the volume fraction of carbon dioxide in the cabin; is the volume fraction of carbon dioxide in the environment; is the molar flow of oxygen loss caused by ventilation; is the current oxygen volume fraction in the cabin; is input as a loss term of mass conservation and dynamic convergence constraint.

[0036] After obtaining the corrected value of the oxygen consumption of the occupant metabolism and the oxygen loss caused by ventilation, combined with the deviation between the target oxygen volume fraction in the cabin and the current oxygen volume fraction in the cabin, the mass conservation and dynamic convergence constraint of the oxygen volume fraction in the occupant cabin is established, the molar flow of oxygen demand of the occupant cabin is solved, which is the final output of the oxygen demand and is used to drive the upstream oxygen distribution priority; the mass conservation and dynamic convergence constraint is given by the following formula:

[0037] wherein, is the molar flow of oxygen demand of the occupant cabin, i.e. the oxygen demand; is the target oxygen volume fraction in the cabin; is the cabin pressure; is the equivalent volume of the occupant cabin; is the cabin temperature; is the universal gas constant; is the convergence rate coefficient, used to set the desired speed of convergence of the oxygen volume fraction in the cabin to the target oxygen volume fraction in the cabin; is the transient filling term induced by the target deviation, used to realize the dynamic convergence of the oxygen volume fraction in the cabin in a finite time; is input as a rigid priority of the oxygen distribution subsystem to cut the redundant oxygen mass flow, so as to ensure that the life support is prior to the power system power compensation.

[0038] S120, according to the oxygen production amount and the oxygen demand, it is judged whether there is redundant oxygen.

[0039] First, the time-varying upper limit on the allocable side is formed, then the oxygen demand mass flow of the occupant cabin is cut as a rigid priority, and finally the existence and available amount of the redundant oxygen mass flow are output, and are injected into the intake end of the power system by the oxygen distribution subsystem; each link in the chain operates in a closed loop in a fixed sampling period, and cooperates with the oxygen concentration sensor and the safety limiting logic, so as to realize the integrated implementation of the determination and utilization of the redundant oxygen.

[0040] On the allocable side, the oxygen production of the oxygen production system is fused with the buffer oxygen tank state to obtain the allocable oxygen mass flow on the allocable side as the upstream input in the current sampling period; the allocable oxygen mass flow is given by the following formula:

[0041] wherein, is the upper limit of the oxygen mass flow rate available for distribution, providing an upper limit for the subsequent passenger cabin priority distribution and redundancy determination; is the total oxygen mass flow rate output by the oxygen generation system, derived from the built-in flow meter or estimation module of the oxygen generation system; is the equivalent oxygen mass flow rate released by the buffer oxygen tank, derived from the difference between the buffer oxygen tank pressure, temperature and the target pressure downstream of the pressure reducing valve, used to provide compensation when the transient demand rises.

[0042] On the priority distribution side, according to the life support priority principle, the oxygen demand mass flow rate of the passenger cabin and the oxygen mass flow rate available for distribution are cut off cycle by cycle to obtain the actual oxygen mass flow rate distributed to the passenger cabin, and the remaining amount on the distribution available side is updated synchronously; the actual oxygen mass flow rate distributed to the passenger cabin is given by the following formula:

[0043] wherein, is the actual oxygen mass flow rate distributed to the passenger cabin, serving as the command target of the passenger branch of the distribution valve; is the oxygen demand mass flow rate of the passenger cabin, determined by the modeling of the number of passengers and activity intensity, the carbon dioxide limit ventilation constraint, cabin leakage estimation and target cabin oxygen volume fraction dynamic convergence term; is the upper limit of the oxygen mass flow rate available for distribution in the current cycle.

[0044] On the redundancy determination side, the remaining capacity and non-negative constraint are used to calculate the redundant oxygen mass flow rate, and the determination variable of the existence of redundancy is given; the redundant oxygen mass flow rate and the determination variable are given by the following formula:

[0045]

[0046] wherein, is the redundant oxygen mass flow rate, used as a measure of available resources for power compensation of the power system; is the determination variable of the existence of redundancy, taking the value of "existence" or "nonexistence"; is the minimum available distribution threshold, derived from the minimum controllable flow calibration of the actuator.

[0047] At the power system end, when redundancy exists, the redundant oxygen mass flow enters the control algorithm module as a feedforward upper limit, and together with the power system intake mass flow, the target intake oxygen volume fraction and the safety threshold, generates a power system end injection upper limit, then through duty cycle mapping and proportional integral correction forms a comprehensive duty cycle output, drives the power system port of the oxygen distribution subsystem to perform injection; To ensure combustion safety and controllable emissions, an oxygen concentration sensor is configured before the power system intake manifold to form a closed-loop measurement, and when the oxygen volume fraction of the mixed gas approaches or exceeds the safety threshold, the power system end oxygen supply is immediately limited or cut off, and the limiting logic and the cut-off logic have the highest priority and can override all regular regulation commands.

[0048] S130, if it is determined that there is redundant oxygen, the redundant oxygen is distributed to the power system intake end to realize power compensation for the power system.

[0049] The power system covers various fuel forms, including gasoline engines fueled by gasoline, which rely on spark ignition to achieve stable output at high speed; diesel engines fueled by diesel, which achieve high torque and high thermal efficiency through compression ignition; ethanol power machines fueled by ethanol, which use renewable biofuels to achieve lower emissions and partial replacement of fossil energy; and hydrogen energy power machines fueled by hydrogen, which achieve zero carbon emissions and high energy density output through oxidation of hydrogen in fuel cells or internal combustion engines. Different types of power systems have different combustion characteristics and application scenarios, and together form a diversified energy-driven technology system.

[0050] In one possible implementation, if it is determined that there is redundant oxygen, the redundant oxygen is distributed to the power system intake end to realize power compensation for the power system, specifically including: introducing the redundant oxygen into the power system intake end, mixing the redundant oxygen with air, and detecting the oxygen volume fraction of the mixed gas; based on the oxygen volume fraction, calculating the allowed oxygen flow injected into the intake pipeline according to a preset control algorithm, and outputting a corresponding duty cycle instruction to adjust the flow of injected oxygen.

[0051] Specifically, after the redundant oxygen enters the power system intake end, it is mixed with ambient air to form a dynamically uniform mixed gas in the intake passage, ensuring that the subsequent combustion process can obtain sufficient and stable oxygen supply. The mixing of oxygen and air relies on the turbulent diffusion effect of the intake flow field, so that different gas components are fully distributed, avoiding local oxygen enrichment or local oxygen deficiency. Before the mixed gas formed after mixing enters the combustion chamber, the oxygen volume fraction needs to be detected in real time to represent the volume fraction of oxygen in the mixed gas. The oxygen volume fraction is a core feedback parameter for subsequent control links, and directly determines whether the power system combustion is stable and safe.

[0052] The detection result of the oxygen volume fraction enters the control algorithm as an input signal. The control algorithm first compares the measured oxygen volume fraction with the target oxygen volume fraction to obtain an oxygen concentration deviation, and calculates the maximum oxygen flow allowed to be injected in combination with the redundant oxygen mass flow and the power system intake mass flow. In this process, the control algorithm includes a feedforward part and a feedback part. The feedforward part calculates a theoretical compensation oxygen flow according to the power system intake mass flow and the target oxygen volume fraction, and the feedback part generates a correction amount using proportional integral adjustment according to the oxygen concentration deviation. Finally, the control algorithm synthesizes the feedforward result and the feedback correction to obtain an executable oxygen flow instruction, which is converted into a duty cycle instruction through a calibrated flow-duty cycle mapping relationship. The duty cycle instruction is used to drive the oxygen regulating actuator at the intake end of the power system to adjust the oxygen injection rate, so as to ensure that the oxygen volume fraction of the mixed gas is stably maintained within the target value range, and the power of the power system is effectively compensated by the redundant oxygen.

[0053] In one possible implementation, based on the oxygen volume fraction, the oxygen flow allowed to be injected into the intake pipeline is calculated according to a preset control algorithm, and a corresponding duty cycle instruction is output to adjust the flow of the injected oxygen, wherein the control algorithm specifically includes: determining a feedforward oxygen demand mass flow of the power system based on historical oxygen generation conditions and historical oxygen demand, and taking the feedforward oxygen demand mass flow as an input of a duty cycle mapping; mapping the feedforward oxygen demand mass flow into a feedforward duty cycle instruction using a calibrated actuator flow and duty cycle characteristic to form a signal that can directly drive a proportional distribution valve; comparing the oxygen volume fraction with a target intake oxygen volume fraction of the power system to obtain a control deviation, and using a proportional integral corrector to obtain a duty cycle correction amount as a closed-loop compensation for the feedforward duty cycle instruction; superimposing the duty cycle correction amount and the feedforward duty cycle instruction to obtain a comprehensive duty cycle instruction, and taking the comprehensive duty cycle instruction as an input of a limiting processing; after obtaining the comprehensive duty cycle instruction, applying physical limiting and safety limiting to obtain a final duty cycle output; and taking the final duty cycle output as an execution signal to adjust the flow of the injected oxygen.

[0054] Specifically, when determining the feedforward oxygen demand mass flow of the power system based on the historical oxygen generation conditions and the historical oxygen demand, the historical oxygen generation mass flow and the historical oxygen demand mass flow of the passenger cabin are first time-averaged in a sliding window to obtain an upper limit of the redundant oxygen mass flow available for distribution, and a theoretical compensation oxygen mass flow is given in combination with the power system intake mass flow and the target intake oxygen volume fraction of the power system. The maximum allowed oxygen mass flow is obtained by introducing the upper limit of the safe intake oxygen volume fraction of the power system, and the minimum of the three is taken as the feedforward oxygen demand mass flow as an input of the duty cycle mapping.

[0055] In a possible implementation, the feedforward oxygen demand mass flow of the power system is determined based on historical oxygen generation and historical oxygen demand, specifically comprising: calculating a redundant oxygen mass flow according to the difference between the historical oxygen generation and the historical oxygen demand of the passenger cabin in the last period, taking the redundant oxygen mass flow as the starting input of the current period; combining the estimated power system intake mass flow in the last period and the target intake oxygen volume fraction set in the current period to solve the theoretical compensation oxygen mass flow; introducing a safety threshold and calculating the maximum allowable oxygen mass flow as the boundary of feedforward clipping; taking the minimum value of the redundant oxygen mass flow, the theoretical compensation oxygen mass flow and the maximum oxygen mass flow as the feedforward oxygen demand mass flow. The related calculation is given as follows: Specifically, the redundant oxygen mass flow is calculated according to the difference between the historical oxygen generation and the historical oxygen demand of the passenger cabin in the last period, taken as the starting input of the current period, and the sliding window or exponential weighted time average is used to suppress short period fluctuations and ensure feedforward stability; at the time of discrete period index , the redundant oxygen mass flow is calculated as follows, and non-negative projection is performed when the result is negative to meet the availability constraint:

[0056] wherein, is the smoothed estimation of the historical oxygen generation mass flow in the last period, is the smoothed estimation of the historical oxygen demand mass flow of the passenger cabin in the last period, is the starting redundant oxygen mass flow of the current period, used as the upstream input of the subsequent feedforward clipping link.

[0057] The theoretical compensation oxygen mass flow is solved by combining the estimated power system intake mass flow in the last period and the target intake oxygen volume fraction set in the current period, and the demand amplitude is obtained by multiplying the difference between the target and the current by the power system intake mass flow and introducing the volume fraction to mass flow equivalent conversion coefficient; the discrete form is given as follows:

[0058] wherein, is the power system intake mass flow in the last period, is the target intake oxygen volume fraction in the current period, is the measured intake oxygen volume fraction in the last period, is the equivalent conversion coefficient for mapping the volume fraction difference to the oxygen mass flow, is the theoretical compensation oxygen mass flow, which is the intermediate result of feedforward planning and enters the safety clipping step.

[0059] A safety threshold is introduced and the maximum oxygen mass flow allowed is calculated as the boundary of the feedforward clipping to prevent the oxygen from exceeding the upper limit of the safety intake oxygen volume fraction of the power system and the heat load from being abnormal by mapping the difference between the upper limit of the safety intake oxygen volume fraction of the power system and the current measured intake oxygen volume fraction to the upper limit of the mass flow.

[0060] wherein, is the upper limit of the safety intake oxygen volume fraction of the power system, which is determined by calibration and emission constraints, is the maximum oxygen mass flow allowed at the current operating condition, which is used as the hard boundary of the feedforward clipping and is jointly limited by the upper limit of the safety intake oxygen volume fraction of the power system and the lower limit of the safety intake oxygen volume fraction of the power system in the last paragraph.

[0061] The minimum value of the redundant oxygen mass flow, the theoretical compensation oxygen mass flow and the maximum oxygen mass flow is taken as the feedforward oxygen demand mass flow, so that the upstream availability, the target demand and the safety boundary are consistently satisfied at the same time, and the continuity of the processing output into the duty cycle mapping is ensured; the comprehensive clipping is given by the following formula:

[0062] wherein, is the feedforward oxygen demand mass flow in the current period, which is the only input quantity for the next duty cycle mapping.

[0063] When the feedforward oxygen demand mass flow is mapped to the feedforward duty cycle command by using the calibrated actuator flow and duty cycle characteristics, a calibrated monotonic mapping function is used to map and the operating condition variables such as ambient pressure to the duty cycle, so as to obtain the feedforward command which can be directly driven, and the calculation is given by the following formula:

[0064] wherein, is the feedforward duty cycle command, is the calibrated flow-duty cycle characteristic mapping, is the ambient pressure, is the feedforward oxygen demand mass flow obtained in the last paragraph, as the input of the subsequent closed-loop compensation superposition.

[0065] When the measured oxygen volume fraction is compared with the target intake oxygen volume fraction of the power system and the duty cycle correction amount is obtained by using a proportional-integral corrector, the oxygen concentration deviation is first constructed, then the correction amount is generated in the form of discrete proportional-integral, and discrete precision compensation can be added to overcome the sampling effect, and the calculation is given by the following formula:

[0066] ​

[0067] in, For the first Oxygen concentration deviation over each sampling period For the first Measured intake oxygen volume fraction for each sampling period For proportional gain, For integral gain, The sampling period is These are the discrete precision compensation coefficients. This is the duty cycle correction amount. and The upstream inputs of the combined duty cycle command are superimposed.

[0068] When the duty cycle correction is superimposed with the feedforward duty cycle command to obtain the comprehensive duty cycle command, a linear superposition strategy is used to maintain the interpretability and verifiability of the adjustment. The calculation is given by the following formula:

[0069] in, For the first The overall duty cycle instruction for each sampling period, For feedforward duty cycle instructions within the same period, This is the duty cycle correction amount for the same period. As a direct input for amplitude limiting processing.

[0070] When applying physical and safety limits after the comprehensive duty cycle command to obtain the final duty cycle output, upper and lower bounds are constructed using the execution capability boundary and the power system safety boundary to prevent overdrive and excessive oxygen enrichment. The calculation is given by the following formula:

[0071] in, For the final duty cycle output, For interval limiting operators, and These are the physical lower limit and the safety upper limit, respectively. It serves as an execution signal to regulate the flow rate of injected oxygen.

[0072] When the final duty cycle output is used as the execution signal to regulate the injected oxygen flow rate, the online estimation and consistency verification of the duty cycle to oxygen mass flow rate are performed through a reverse calibration model, making the control closed loop observable and verifiable. The estimation is given by the following formula:

[0073] in, To estimate the injected oxygen mass flow rate based on the final duty cycle output, This is the inverse mapping model of duty cycle flow. for the final duty cycle output, for the ambient pressure, reverse check the consistency of the last paragraph with the history volume update of the next sampling period.

[0074] In one possible implementation, after obtaining the comprehensive duty cycle instruction, applying physical limiting and safety limiting, and obtaining the final duty cycle output, the method further comprises: after outputting the final duty cycle, generating a new oxygen volume fraction response of the mixed gas in the current period, and outputting a new measured intake oxygen volume fraction at the beginning of the next sampling period by the oxygen concentration sensor, the new measured intake oxygen volume fraction enters the feedback deviation calculation, triggering the redundant oxygen mass flow calculation input in the next period, so as to form a periodic closed-loop regulation.

[0075] Specifically, after outputting the final duty cycle, a new oxygen volume fraction response of the mixed gas in the current period is generated. The comprehensive duty cycle output drives the oxygen regulation actuator to control the oxygen injection amount, and the air entering the power system intake port is mixed with the redundant oxygen again to form a new mixed gas. Since the injection amount changes in the current period, the mixing ratio in the intake passage is redistributed, resulting in a dynamic change in the oxygen volume fraction of the mixed gas relative to the last period. This change process is the oxygen volume fraction response. The oxygen volume fraction response refers to the process of reaching a new equilibrium state of the oxygen volume fraction in the mixed gas in one sampling period under the action of the execution signal. The response result is formed at the end of the period for use in the next period sampling.

[0076] The new measured intake oxygen volume fraction is output at the beginning of the next sampling period by the oxygen concentration sensor. The oxygen concentration sensor monitors the oxygen volume fraction of the mixed gas in the intake passage in real time and updates the output at the beginning of the sampling period set by the control system. The new measured intake oxygen volume fraction represents the mixing state reached under the action of the control signal in the last period, and is a direct feedback quantity of the closed-loop regulation of the system.

[0077] The new measured intake oxygen volume fraction enters the feedback deviation calculation, triggering the redundant oxygen mass flow calculation input in the next period. The new measured intake oxygen volume fraction is compared with the set target intake oxygen volume fraction, and the feedback deviation is calculated. The deviation is used as an input variable for proportional integral correction to correct the feedforward duty cycle instruction. At the same time, the feedback deviation also indirectly affects the determination of the redundant oxygen mass flow, as it determines the actual injection amount and the redundant utilization efficiency through the correction process. The redundant oxygen mass flow is recalculated in the next period, with the corrected oxygen injection result as the historical reference input, thereby forming a cross-period data coupling.

[0078] This way forms a periodic closed-loop regulation. In each sampling period, the integrated duty ratio output causes the oxygen volume fraction response, and the new measured intake oxygen volume fraction is collected and fed back in the next sampling period to drive the new deviation calculation and redundant oxygen mass flow update. This cycle continues, forming a closed-loop operation mechanism in the time domain, so that the distribution of redundant oxygen in the intake of the power system can both maintain dynamic follow-up and always be constrained within the safety threshold, thereby realizing stable and reliable power compensation.

[0079] In one possible implementation, based on the oxygen volume fraction, the oxygen flow allowed to be injected into the intake pipeline is calculated according to a preset control algorithm, and a corresponding duty ratio instruction is output to adjust the flow of injected oxygen, specifically including: when it is detected that the oxygen volume fraction is less than the safety threshold, the current compensation oxygen supply state is maintained; when it is detected that the oxygen volume fraction is greater than or equal to the safety threshold, the oxygen supply to the power system port is reduced or cut off, thereby ensuring combustion safety.

[0080] Specifically, when it is detected that the oxygen volume fraction is less than the safety threshold, the integrated duty ratio instruction is maintained unchanged in the current sampling period, so that the compensation oxygen supply state is maintained continuously and stably. The oxygen volume fraction refers to the volume fraction of oxygen in the mixed gas, which is used to reflect the oxygen enrichment degree of the intake mixture; the safety threshold is the upper limit of the calibrated intake oxygen volume fraction, which is used to limit the combustion temperature and emission risk. The specific method of maintaining the integrated duty ratio instruction unchanged is: retaining the integrated duty ratio output of the last period as the execution amount of the current period, and freezing the integral increment of the feedback correction channel to prevent unnecessary flow jitter caused by short-time measurement fluctuations; in this state, only the inertia update is performed on the feedforward link to comply with the slow changes in the working conditions, so that the compensation oxygen supply intensity at the power system end is consistent with that of the last period, and the combustion is stable and does not touch the safety threshold.

[0081] When it is detected that the oxygen volume fraction is greater than or equal to the safety threshold, the integrated duty ratio instruction is immediately implemented with a limiting retreat, and the decrement control or cut-off control is executed in priority order to reduce the oxygen supply to the power system port. The limiting retreat refers to setting a forced upper limit for the integrated duty ratio in the current period, and quickly reducing it to the safety interval by a preset retreat step; the decrement control is used to reduce the execution amount in proportion when the limit is slightly exceeded, so that the oxygen volume fraction quickly falls below the safety threshold; the cut-off control is used to set the execution amount to zero when the limit is significantly exceeded or the limit is continuous, immediately terminating the compensation oxygen supply, and entering a controlled restart process after confirming that the oxygen volume fraction returns to the safety interval in the next period. The above process takes the oxygen volume fraction as the closed-loop feedback quantity, the safety threshold as the hard constraint quantity, and the integrated duty ratio as the only execution quantity, to ensure combustion safety priority and inhibit the risk of heat load and emission out of control caused by oxygen enrichment.

[0082] S140, if it is determined that there is no redundant oxygen, increasing the oxygen production amount based on the oxygen consumption of the power system.

[0083] Under the premise that the redundant oxygen mass flow has been determined, a distribution link combining feedforward clipping and closed-loop correction is constructed to make the redundant oxygen form a controlled injection at the intake end of the power system. First, the redundant oxygen mass flow of the current period is initialized based on the historical quantity of the previous period, and then the feedforward planning is entered accordingly. At the time of discrete period index , the redundant oxygen mass flow is taken as the initial input of the current period, the theoretical compensation oxygen mass flow is given according to the difference between the intake mass flow of the power system and the target intake oxygen volume fraction, the safety boundary is defined by the safety threshold, and the minimum of the three is taken to obtain the feedforward oxygen demand mass flow, and then the feedforward duty ratio command is obtained through the flow duty ratio mapping. Subsequently, the deviation is constructed with the measured intake oxygen volume fraction, and the duty ratio correction amount is obtained in the proportional-integral form, which is linearly superimposed with the feedforward duty ratio command to form the comprehensive duty ratio command, and the physical limit and safety limit are applied to obtain the final duty ratio output. The final duty ratio output is used to adjust the injection oxygen mass flow, and at the same time triggers the measurement and update of the next period, so as to realize the power compensation of the power system when the redundancy exists. For the sake of clarity, the key calculations are expanded in order as follows: The feedforward three quantities are established based on the historical quantity of the previous period and the current target, and the feedforward oxygen demand mass flow is given:

[0084] wherein, is the theoretical compensation oxygen mass flow, is the equivalent conversion coefficient of the volume fraction difference and the oxygen mass flow, is the intake mass flow of the power system in the previous period, is the target intake oxygen volume fraction, is the measured intake oxygen volume fraction in the previous period.

[0085]

[0086] wherein, is the maximum allowed oxygen mass flow, is the upper limit of the safety intake oxygen volume fraction corresponding to the safety threshold, which is used to limit the combustion temperature and emission risk brought by oxygen enrichment, and the remaining symbols are the same as before.

[0087]

[0088] wherein, is the feedforward oxygen demand mass flow, is the redundant oxygen mass flow at the beginning of the current period, and are the same as described before.

[0089] Map the feedforward oxygen demand mass flow to a feedforward duty cycle command:

[0090] wherein, is the feedforward duty cycle command, is a calibrated monotonic mapping, is the current cycle ambient pressure, used to reflect the effect of altitude change on injection capability.

[0091] Construct the oxygen volume fraction deviation and give the duty cycle correction:

[0092] wherein, is the current cycle oxygen volume fraction deviation, is the current cycle measured intake oxygen volume fraction, as before.

[0093]

[0094] wherein, is the duty cycle correction, is the proportional gain, is the integral gain, is the sampling period, is the discrete precision compensation coefficient, is the previous cycle deviation.

[0095] Superimpose to form the comprehensive duty cycle command and implement the clipping and safety suppression:

[0096] wherein, is the comprehensive duty cycle command, and as before.

[0097]

[0098] wherein, is the final duty cycle output, is the indicator function, used to trigger the "zeroing suppression" when the current cycle measured intake oxygen volume fraction reaches or exceeds the safety threshold, is the interval clipping operator, and are the physical lower limit and safety upper limit, respectively.

[0099] Based on the final duty cycle output, obtain the online consistency estimate of the current cycle injected oxygen mass flow:

[0100] wherein, is the estimate of the oxygen mass flow injected, is the inverse calibration mapping of the duty cycle to the oxygen mass flow, is the final duty cycle output, is the ambient pressure of the current cycle.

[0101] At the end of the current cycle, a new mixture oxygen volume fraction response is formed under the influence of the final duty cycle output, and a new measured intake oxygen volume fraction is obtained at the beginning of the next sampling cycle, and the deviation and the history quantity are updated accordingly, so that , and the solution of has the basis of the latest working condition. Through the above sequential calculation and constraint control, the redundant oxygen is quantitatively and verifiably allocated to the intake end of the power system when it exists, so that the intake oxygen volume fraction is stably adjusted around the target value, and the compensation oxygen is immediately inhibited or cut off when it approaches or reaches the safety threshold, so as to ensure the safety of combustion while realizing power compensation.

[0102] The embodiment also discloses an oxygen distribution system, referring to Figure 2 , the oxygen distribution system comprises an oxygen generation module 201, a buffer oxygen storage tank 202, a pressure reducing valve 203, a three-way oxygen distribution module 204 and an intelligent control module 205, wherein: The oxygen generation module 201 is used for generating oxygen; The buffer oxygen storage tank 202 is used for storing the oxygen generated by the oxygen generation module 201, neutralizing the pressure pulsation of the oxygen generated by the oxygen generation module 201, and providing flow buffering for the instantaneous oxygen demand of the power system; The pressure reducing valve 203 is used for reducing the oxygen output by the buffer oxygen storage tank 202 to atmospheric pressure to meet the working demand of the three-way oxygen distribution module 204; The input port of the three-way oxygen distribution module 204 is connected to the outlet of the pressure reducing valve 203, the two output ports of the three-way oxygen distribution module 204 are respectively connected to the passenger cabin oxygen supply pipeline and the power system oxygen supply pipeline, receive the instruction of the intelligent control module 205, dynamically adjust the oxygen flow ratio to the passenger cabin oxygen supply pipeline and the power system oxygen supply pipeline, so as to accurately control the injected oxygen mass flow; The intelligent control module 205 is in communication connection with the oxygen generation module 201, the buffer oxygen storage tank 202, the pressure reducing valve 203 and the three-way oxygen distribution module 204, and the intelligent control module 205 is used for executing an oxygen distribution-based power system power compensation method as described above.

[0103] Specifically, the oxygen generation module 201 and the buffer oxygen tank 202 form a continuous oxygen supply and pressure stable upstream link. The oxygen generation module 201 continuously generates oxygen, but its output characteristics have pressure pulsations and transient fluctuations. After the output is connected to the buffer oxygen tank 202, the volume effect and pressure stabilization characteristics of the buffer oxygen tank 202 are used to homogenize the output gas flow, stabilize the oxygen flow, avoid uneven flow or pressure impact when directly entering the subsequent pipeline, and provide flow buffering capacity for the power system when the transient load changes, thereby ensuring that the downstream distribution link can obtain a stable and controllable gas source.

[0104] The buffer oxygen tank 202 and the pressure reducing valve 203 form a controllable pressure management link. The oxygen output by the buffer oxygen tank 202 is at a pressure level higher than the environment, and direct use will cause the subsequent distribution actuator to be unable to maintain linear response. After being processed by the pressure reducing valve 203, the output is stabilized at a level close to atmospheric pressure, so that the three-way oxygen distribution module 204 works in a low-pressure state and can maintain flow regulation accuracy, while avoiding safety hazards in high-pressure working conditions. The presence of the pressure reducing valve 203 forms a pressure isolation between the buffer oxygen tank 202 and the distribution link, improving the reliability and safety of overall operation.

[0105] The pressure reducing valve 203 and the three-way oxygen distribution module 204 realize on-demand distribution. The oxygen stabilized by the pressure reducing valve 203 enters the three-way oxygen distribution module 204, which dynamically adjusts the opening ratio of the two output ports according to the instructions from the intelligent control module 205, one of which is delivered to the passenger cabin, and the other is delivered to the power system. Through this proportional adjustment, it can ensure that the oxygen demand in the passenger cabin is prioritized, and the redundant oxygen is reasonably distributed to the power system, realizing the coordinated operation of life support and power compensation.

[0106] The three-way oxygen distribution module 204 and the intelligent control module 205 form a closed-loop distribution control. The three-way oxygen distribution module 204 as the execution end relies on the duty cycle instruction issued by the intelligent control module 205 to realize output flow regulation. The intelligent control module 205 collects the output of the oxygen generation module 201, the state of the buffer oxygen tank 202, and the oxygen volume fraction of the power system in real time, inputs these data into the preset control algorithm, obtains the distribution instruction, and drives the three-way oxygen distribution module 204 to execute, thereby dynamically maintaining the balance of oxygen supply for the passenger cabin and the power system.

[0107] The intelligent control module 205 is combined with the oxygen generation module 201, the buffer oxygen tank 202, the pressure reducing valve 203 and the three-way oxygen distribution module 204 to form a complete multi-link coordination system. The intelligent control module 205 not only issues flow distribution instructions, but also schedules the operation of the oxygen generation module 201, monitors the capacity state of the buffer oxygen tank 202, and checks the pressure stabilizing effect of the pressure reducing valve 203, and finally ensures that the oxygen is distributed as needed between the passenger cabin and the power system through a control algorithm, realizing a safe, stable and efficient power compensation method.

[0108] The gas transmission channels of each component are connected through oxygen-resistant pipelines and joints. Anti-oxidation and fireproof materials are used to ensure the sealing and safety in a high oxygen partial pressure environment. Oxygen and air are mixed and filtered through the air filter box. The oxygen concentration sensor is installed before the power system intake manifold. It is used to accurately measure the oxygen concentration signal of the mixed gas and transmit it to the intelligent control module 205 in real time.

[0109] In one possible implementation, referring to Figure 3 A power system power compensation control framework based on oxygen distribution, which is composed of an "oxygen generation and regulation subsystem", an "oxygen distribution subsystem" and an "oxygen mixing control subsystem", and the three form a closed loop through a general controller.

[0110] The oxygen generation and regulation subsystem includes an oxygen generation system, a buffer oxygen tank and a pressure reducing valve. The oxygen generation system is used to continuously prepare oxygen, the buffer oxygen tank is used to reduce the pressure pulsation of the oxygen output and provide instantaneous flow compensation when the demand changes, and the pressure reducing valve reduces the output of the tank to near atmospheric pressure to ensure the stable operation of the subsequent distribution link. The subsystem provides data of oxygen generation capacity, oxygen flow and environmental conditions to the general controller through a sensor group including temperature sensors, oxygen flow sensors, environmental partial pressure sensors and altitude pressure sensors, so that the controller can determine the current oxygen generation capacity and the allocable margin.

[0111] The oxygen distribution subsystem is composed of a distribution module that collects trigger signals and is divided into two parts: a passenger cabin oxygen supply pipeline and a power system oxygen supply pipeline. The three-way structure realizes proportional distribution of oxygen under the instruction of the general controller: when the passenger cabin demand is met first and there is redundancy, the redundant part is guided to the power system port to realize power compensation. The control signal sent by the general controller drives the distribution module in the form of duty ratio, thereby accurately controlling the oxygen injection flow.

[0112] The oxygen mixing control subsystem covers a mixing path of outside air and oxygen, air enters the mixed gas pipeline through the air filter, and forms mixed gas with the injected oxygen in the mixed gas pipeline. Before the mixed gas enters the power system, the oxygen volume fraction is fed back to the total controller by the oxygen concentration sensor. The total controller combines the target intake oxygen volume fraction, the measured intake oxygen volume fraction and the safety threshold, executes the feedforward plus feedback control algorithm, dynamically adjusts the oxygen injection flow, so as to improve the power of the power system while ensuring the safety of combustion.

[0113] The embodiment also discloses an electronic device, referring to Figure 4 , the electronic device can comprise: at least one processor 401, at least one communication bus 402, a user interface 403, a network interface 404, and at least one memory 405.

[0114] The communication bus 402 is used to realize the connection communication among the components.

[0115] The user interface 403 can comprise a display screen (Display) and a camera (Camera), and the optional user interface 403 can further comprise a standard wired interface and a wireless interface.

[0116] The network interface 404 can optionally comprise a standard wired interface and a wireless interface (such as a WI-FI interface).

[0117] The processor 401 can comprise one or more processing cores. The processor 401 connects various parts in the server through various interfaces and lines, executes various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 405, and calling data stored in the memory 405. Optionally, the processor 401 can be realized in at least one of a hardware form of a digital signal processing (Digital Signal Processing, DSP), a field-programmable gate array (Field-Programmable Gate Array, FPGA) and a programmable logic array (Programmable Logic Array, PLA). The processor 401 can integrate a combination of one or several of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. The CPU is mainly used to process an operating system, a user interface and an application program; the GPU is used to render and draw the content to be displayed on the display screen; and the modem is used to process wireless communication. It can be understood that the above-mentioned modem can also not be integrated into the processor 401, but realized by a separate chip.

[0118] The memory 405 can include a Random Access Memory (RAM) and can also include a Read-Only Memory (ROM). Optionally, the memory includes a non-transitory computer-readable storage medium. The memory 405 can be used to store instructions, programs, codes, code sets, or instruction sets. The memory 405 can include a program storage area and a data storage area, where the program storage area can store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described above, etc.; the data storage area can store data involved in the various method embodiments described above, etc. The memory 405 can also be at least one storage device located away from the aforementioned processor 401. The memory 405, as a computer storage medium, can include an operating system, a network communication module, a user interface 403 module, and an application program of a power compensation method for a power system based on oxygen distribution.

[0119] In Figure 4 In the electronic device shown, the user interface 403 is mainly used to provide an interface for user input and obtain data input by the user; and the processor 401 can be used to call the application program of the power compensation method for a power system based on oxygen distribution stored in the memory 405, and when executed by one or more processors 401, make the electronic device execute the method of one or more of the above embodiments.

[0120] It should be noted that, for the above-mentioned method embodiments, in order to simply describe, they are all expressed as a combination of a series of actions, but those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0121] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0122] In several embodiments provided by the present application, it should be understood that the disclosed apparatus can be implemented in other manners. For example, the division of the apparatus embodiments is merely illustrative, and the division of units can be changed according to actual needs. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0123] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0124] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can be physically present separately, or two or more units can be integrated into one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0125] If the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium 405 and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method of each embodiment of the present application. The aforementioned storage medium 405 includes: a U disk, a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0126] The present application also discloses a computer readable storage medium, which stores instructions. When executed by one or more processors 401, the electronic device executes one or more methods in the above embodiments.

[0127] The above merely show example embodiments of the present disclosure, and cannot limit the scope of the present disclosure. That is, equivalent changes and modifications made in accordance with the teachings of the present disclosure are still within the scope of the present disclosure. Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the specification and practice of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptive changes of the present disclosure following the general principles thereof and including those art-recognized equivalents and adaptations that are within the scope of the present disclosure. The specification and examples are to be regarded as exemplary only, and the scope and spirit of the present disclosure are to be limited only by the claims.

Claims

1. A power compensation method for a power system based on oxygen distribution, characterized in that, The method includes: Determine the oxygen production capacity and the oxygen demand of the crew cabin. Based on the oxygen production capacity and the oxygen demand, determine whether there is redundant oxygen. If the redundant oxygen is determined to exist, the redundant oxygen is allocated to the intake end of the power system to achieve power compensation for the power system. If it is determined that there is no redundant oxygen, then the oxygen production is increased based on the oxygen consumption of the power system.

2. The power compensation method for a power system based on oxygen distribution according to claim 1, characterized in that, If it is determined that the redundant oxygen exists, then the redundant oxygen is allocated to the intake end of the power system, specifically including: The redundant oxygen is introduced into the intake end of the power system to mix with air, and the oxygen volume fraction of the mixed gas is detected. Based on the oxygen volume fraction, the allowable oxygen flow rate injected into the intake pipe is calculated according to a preset control algorithm, and a corresponding duty cycle command is output to adjust the oxygen flow rate.

3. The power compensation method for a power system based on oxygen distribution according to claim 2, characterized in that, Based on the oxygen volume fraction, the allowable oxygen flow rate injected into the intake pipe is calculated according to a preset control algorithm, and a corresponding duty cycle command is output to adjust the injected oxygen flow rate. Specifically, the control algorithm includes: The feedforward oxygen demand mass flow rate of the power system is determined based on historical oxygen production data and historical oxygen demand, and the feedforward oxygen demand mass flow rate is used as the input for duty cycle mapping. By utilizing the calibrated actuator flow rate and duty cycle characteristics, the feedforward oxygen demand mass flow rate is mapped into a feedforward duty cycle command, forming a signal that can directly drive the proportional distribution valve. The oxygen volume fraction is compared with the target intake oxygen volume fraction of the power system to obtain the control deviation. The duty cycle correction is obtained by using a proportional-integral corrector as a closed-loop compensation for the feedforward duty cycle command. The duty cycle correction amount is superimposed with the feedforward duty cycle command to obtain the comprehensive duty cycle command, and the comprehensive duty cycle command is used as the input for the amplitude limiting process; After receiving the comprehensive duty cycle command, physical limiting and safety limiting are applied to obtain the final duty cycle output; The final duty cycle output is used as an execution signal to regulate the flow rate of injected oxygen.

4. The power compensation method for a power system based on oxygen distribution according to claim 3, characterized in that, The determination of the feedforward oxygen demand mass flow rate of the power system based on historical oxygen production and historical oxygen demand specifically includes: Based on the difference between the historical oxygen production in the previous cycle and the historical oxygen consumption in the crew cabin, the redundant oxygen mass flow rate is calculated, and the redundant oxygen mass flow rate is used as the starting input for this cycle. By combining the estimated intake mass flow rate of the power system from the previous cycle with the target intake oxygen volume fraction set for this cycle, the theoretical compensation oxygen mass flow rate is calculated. A safety threshold is introduced and the maximum allowable oxygen mass flow rate is calculated as the boundary for feedforward pruning; The minimum value among the redundant oxygen mass flow rate, the theoretically compensated oxygen mass flow rate, and the maximum oxygen mass flow rate is taken as the feedforward oxygen demand mass flow rate.

5. The power compensation method for a power system based on oxygen distribution according to claim 3, characterized in that, After obtaining the comprehensive duty cycle command, applying physical limiting and safety limiting to obtain the final duty cycle output, the method further includes: After outputting the final duty cycle, a new oxygen volume fraction response of the mixed gas is generated in this cycle, and the oxygen concentration sensor outputs a new measured intake oxygen volume fraction at the beginning of the next sampling cycle. The new measured intake oxygen volume fraction is entered into the feedback deviation calculation, triggering the redundant oxygen mass flow calculation input for the next cycle, thereby forming a periodic closed-loop regulation.

6. The power compensation method for a power system based on oxygen distribution according to claim 2, characterized in that, The step of calculating the allowable oxygen flow rate injected into the intake pipe based on the oxygen volume fraction according to a preset control algorithm and outputting a corresponding duty cycle command to adjust the injected oxygen flow rate specifically includes: When the oxygen volume fraction is detected to be less than the safety threshold, the current compensated oxygen supply status is maintained. When the oxygen volume fraction is detected to be greater than or equal to the safety threshold, the oxygen supply introduced into the power system port is reduced or cut off to ensure combustion safety.

7. The power compensation method for a power system based on oxygen distribution according to claim 1, characterized in that, The determination of oxygen production capacity and oxygen demand in the crew cabin, wherein determining the oxygen demand specifically includes: Determine the number of occupants and the activity intensity, and construct an equivalent model of occupant metabolic oxygen consumption based on the number of occupants and the activity intensity to obtain the occupant metabolic oxygen consumption. Based on the influence of environmental pressure and cabin temperature on metabolic levels, the occupant's metabolic oxygen consumption is corrected to obtain the corresponding correction value. The cabin carbon dioxide generation rate is determined based on the relationship between the occupant's metabolic oxygen consumption and respiratory quotient, and the ventilation flow rate required to meet the carbon dioxide limit is calculated, thereby determining the amount of oxygen loss caused by ventilation. By combining the correction value, the amount of oxygen loss, and the deviation between the set target oxygen volume fraction in the cabin, a mass conservation and dynamic convergence constraint on the oxygen volume fraction in the crew cabin is constructed to determine the molar flow rate of oxygen demand in the crew cabin, and the oxygen demand is obtained.

8. An oxygen distribution system, characterized in that, The oxygen distribution system includes an oxygen generation module, a buffer oxygen storage tank, a pressure reducing valve, a three-way oxygen distribution module, and an intelligent control module, wherein: The oxygen generation module is used to produce oxygen. The buffer oxygen storage tank is used to store the oxygen generated by the oxygen generation module, neutralize the pressure fluctuations of the oxygen produced by the oxygen generation module, and provide flow buffer for the instantaneous oxygen demand of the power system. The pressure reducing valve is used to reduce the pressure of the oxygen output from the buffer oxygen storage tank to atmospheric pressure in order to meet the working requirements of the three-way oxygen distribution module. The input port of the three-way oxygen distribution module is connected to the outlet of the pressure reducing valve, and the two output ports of the three-way oxygen distribution module are respectively connected to the crew cabin oxygen supply pipeline and the power system oxygen supply pipeline. It receives instructions from the intelligent control module and dynamically adjusts the oxygen flow ratio to the crew cabin oxygen supply pipeline and the power system oxygen supply pipeline, thereby precisely controlling the mass flow rate of the injected oxygen. The intelligent control module is also communicatively connected to the oxygen generation module, the buffer oxygen storage tank, the pressure reducing valve, and the three-way oxygen distribution module. The intelligent control module is used to execute a power compensation method for a power system based on oxygen distribution as described in any one of claims 1-7.

9. An electronic device, characterized in that, The device includes a processor, a communication bus, a user interface, a network interface, and a memory. The memory is used to store instructions. The user interface and the network interface are both used to communicate with other devices. The communication bus is used to enable communication between the components within the electronic device. The processor is used to execute the instructions stored in the memory to cause the electronic device to perform the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed, perform the method as described in any one of claims 1-7.

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