An equipment load quantification method considering task phases

Abstract

The present application relates to a kind of equipment load quantification method considering task phase, belong to equipment load quantification technical field.The task type of equipment in life cycle is analyzed, the load environment in task phase process and its coupling relationship are identified, the specific implementation process of load quantification is sorted out, and support is provided for the load quantification of equipment in multiple task phases.A kind of equipment load quantification method considering task phase includes the following steps: step one, task phase division is carried out on equipment life cycle;Step two, the environmental load of each task phase is divided into natural environmental load and induced environmental load;Step three, each environmental load is classified into corresponding load quantification method, and the quantification output value of each load corresponding to the corresponding load quantification method is output.The corresponding quantification output value has better real-time and accuracy.

Description

Technical Field

[0001] This invention relates to a method for quantifying equipment load considering mission phases, and belongs to the field of equipment load quantification technology. Background Technology

[0002] The mission phases within the current equipment life cycle are becoming increasingly diverse, and the types of environmental loads experienced by the equipment during each mission phase are also becoming increasingly complex. Under the condition of multiple mission phases coupled with multiple types of environmental loads, by using complete and effective load quantification methods to quantitatively analyze the load data of the equipment during mission execution, we can effectively identify the weak links in the entire life cycle of the equipment, guide the optimization design of the equipment structure and function, and improve the application level of the equipment.

[0003] Current methods for quantifying equipment loads, such as qualitative data maximum envelope analysis, sensor acquisition, and simulation, mostly rely on mathematical methods or sensor placement to quantify a specific load. These methods, often using a single approach, lack close connection to the equipment's characteristics and mission processes. Different mission phases within the equipment's lifecycle place higher demands on the economy, accuracy, and effectiveness of load quantification methods. For example, in mission phases with complex and diverse loads, the required sensor types and quantities vary. For economic and practical reasons, more sensors are not necessarily better, and installing sensors in certain areas of the equipment is difficult due to limited space. During real-time mission execution, load quantification methods based on mathematical analysis and simulation cannot provide timely guidance. Instead, they typically utilize historical load data from previous mission phases for simulation analysis to improve equipment structural and functional design and optimize mission execution plans. Therefore, the application of simulation-based load quantification methods must be closely linked to the mission phase. Furthermore, simulation methods require environmental loads as input and rely on sensor-acquired load quantification data to improve the accuracy of the simulation data. In summary, considering the different environmental loads experienced by equipment in different mission phases, integrating multiple load quantification methods and carrying out targeted equipment load quantification in multiple mission phases is of great significance.

[0004] Existing equipment load quantification methods typically aim to quantify a specific load, using a single method for load quantification analysis. This approach is not closely linked to the characteristics of the equipment itself and the mission process. It does not take into account the diverse and complex types of loads experienced by the equipment during different mission phases, nor does it comprehensively consider the coupling relationship between natural environmental loads and induced environmental loads. Moreover, for the mission preparation and execution phases of the equipment, load quantification methods need to meet stringent requirements such as economy, accuracy, and effectiveness. Summary of the Invention

[0005] In view of this, the present invention proposes an equipment load quantification method that considers mission phases. By analyzing the mission types of equipment within its life cycle, identifying the load environment and its coupling relationship during the mission phase, and organizing the specific implementation process of load quantification, the present invention provides support for equipment load quantification in multiple mission phases.

[0006] A method for quantifying equipment load considering mission phases includes the following steps:

[0007] Step 1: Divide the equipment life cycle into mission phases, namely: transportation, storage, standby duty, training, mission preparation, mission execution and maintenance, for a total of seven phases.

[0008] Step 2: Divide the environmental loads of each task phase into natural environmental loads and induced environmental loads;

[0009] Step 3: For each task stage, classify each environmental load into the corresponding load quantization method, and use the corresponding load quantization method to output the quantized output value of each load; the load quantization method includes: measuring the natural environmental load of the seven stages based on the load quantization method measured by the sensor.

[0010] For the environmental loads induced during the transportation phase, the dynamic finite element simulation method is used to quantify the loads.

[0011] For the induced environmental loads during standby and training phases, load quantification is performed using sensor measurement and structural mechanics finite element simulation.

[0012] For the induced environmental loads during the mission preparation phase, load quantification is performed by integrating sensor measurement methods, structural mechanics and dynamic finite element simulation methods.

[0013] For the induced environmental loads during the mission execution phase, the load quantification method is adopted by sensor measurement.

[0014] Furthermore, the natural environmental loads include: temperature, relative humidity, air pressure, solar radiation, chemical corrosion, and salt spray and mold concentration; the induced environmental loads include: impact, vibration, noise, equipment temperature, acceleration, electromagnetic interference, and electrical stress.

[0015] Furthermore, the environmental loads of each mission phase include: environmental loads during the transportation phase: natural environmental loads include temperature, relative humidity, and air pressure, and induced environmental loads include the impact and vibration experienced by the equipment;

[0016] Environmental loads during storage: only natural environmental loads such as temperature, relative humidity, air pressure, salt spray and mold concentration, solar radiation and chemical corrosion.

[0017] Environmental loads during standby duty: Natural environmental loads include temperature, air pressure, relative humidity, salt spray and mold concentration, and chemical corrosion; induced environmental loads include electrical stress.

[0018] Environmental loads during the training phase include: natural environmental loads such as temperature, air pressure, relative humidity, salt spray and mold concentration, solar radiation and chemical corrosion, and induced environmental loads such as electrical stress.

[0019] Environmental loads during the mission preparation phase include: natural environmental loads such as temperature, salt spray and mold concentration, solar radiation and chemical corrosion, and induced environmental loads such as vibration, noise, equipment temperature, electromagnetic interference and electrical stress.

[0020] Environmental loads during mission execution: Natural environmental loads include temperature, air pressure, and solar radiation; induced environmental loads include equipment temperature, vibration, noise, impact, acceleration, electromagnetic interference, and electrical stress.

[0021] Environmental loads during the maintenance phase: only natural environmental loads such as temperature, air pressure, solar radiation, relative humidity, salt spray, mold concentration, and chemical corrosion.

[0022] Furthermore, the load quantization method based on sensor measurements includes: temperature sensor measurement method, electrical sensor measurement method, mechanical sensor measurement method, humidity sensor measurement method, optical sensor measurement method, magnetic sensor measurement method, vibration sensor measurement method, noise sensor measurement method, concentration sensor measurement method, air pressure sensor measurement method, and solar radiation sensor measurement method.

[0023] Furthermore, the method for classifying each environmental load into its corresponding load quantification includes:

[0024] During the transportation phase: the impact and vibration in the induced environmental loads are quantitatively measured using a load quantification method based on dynamic finite element simulation;

[0025] Standby and training phases: The voltage value in the electrical stress under induced environmental load is quantized using a load quantization method based on sensor measurement and a load quantization method based on structural mechanics finite element simulation, respectively. The average value of the quantization values ​​from the two methods is taken as the final output value.

[0026] In the mission preparation phase: noise and electromagnetic interference in the induced environmental load are quantized using a load quantization method based on sensor measurements. The temperature, vibration, and voltage values ​​in the electrical stress of the equipment are quantized using both a load quantization method based on sensor measurements and a load quantization method based on structural mechanics finite element simulation. The average of the quantized values ​​from the two methods is taken as the final output value. Vibration is quantized using both a load quantization method based on sensor measurements and a load quantization method based on dynamic finite element simulation. The average of the quantized values ​​from the two methods is taken as the final output value.

[0027] Beneficial effects:

[0028] First, this invention proposes a method for quantifying equipment load considering mission phases. Compared with existing methods, this method first classifies the corresponding mission phases, and then divides the environmental loads into natural environmental loads and induced environmental loads. Therefore, the scope of environmental loads covered is broader than that of current methods on the market. It can effectively identify weak links throughout the entire life cycle of equipment, guide the optimization design of equipment structure and function, and improve the application level of equipment.

[0029] Secondly, current methods for quantifying equipment loads, such as qualitative data maximum envelope analysis, sensor acquisition, and simulation, mostly rely on mathematical methods or sensor placement to quantify a specific load. These methods, using a single approach, are not closely linked to the equipment's characteristics and mission processes. Different mission phases within the equipment's lifespan place higher demands on the economy, accuracy, and effectiveness of load quantification methods. Different mission phases experience different loads, thus requiring different types and quantities of sensors. More sensors are not necessarily better, and installing sensors in certain areas of the equipment is difficult due to limited space. This method, by dividing the equipment according to its mission phases and obtaining corresponding classifications, avoids excessive sensor installation, resulting in better economy and practicality.

[0030] Third, the load quantization methods include: load quantization methods based on structural mechanics finite element simulation and load quantization methods based on dynamic finite element simulation. The addition of these methods, compared with the original single quantization method without classification, improves the real-time performance and accuracy of load data measurement. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a method flow for quantifying equipment load considering the mission phase, corresponding to an embodiment.

[0033] Figure 2 This is a diagram illustrating the segmentation of product task phases.

[0034] Figure 3 This is a schematic diagram of a load quantization method based on finite element simulation of structural mechanics.

[0035] Figure 4 This is a schematic diagram of a load quantization method based on dynamic finite element simulation. Detailed Implementation

[0036] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] This embodiment presents a method for quantifying equipment load considering mission phases. By analyzing the mission types of equipment within its life cycle, identifying the load environment and its coupling relationships during mission phases, and outlining the specific implementation process of load quantification.

[0038] A method for quantifying equipment load considering mission phases (as shown in the appendix) Figure 1 As shown), it includes the following steps:

[0039] Step 1: Divide the equipment life cycle into mission phases, namely: transportation, storage, standby duty, training, mission preparation, mission execution and maintenance, for a total of seven phases.

[0040] Selecting typical equipment as the analysis object, and based on the usage requirements of a specific mission, the equipment mainly undergoes mission profiles from production and delivery until mission completion or decommissioning, including transportation, storage, standby duty, training, mission preparation, mission execution, and maintenance, as shown in the attached figure. Figure 2 As shown.

[0041] Step 2: Divide the environmental loads of each task phase into natural environmental loads and induced environmental loads;

[0042] The equipment is identified based on the typical environmental loads of the mission profile. In this embodiment, the mission phase mainly involves environmental loads such as vibration, temperature, humidity, acceleration, impact, low air pressure, mold, salt spray, and electromagnetic fields. In this embodiment, the natural environmental loads during operation are considered, as well as the influence of external lightning environment, as shown in Table 1.

[0043] Table 1 Typical Environmental Load Types Based on Mission Profile

[0044]

[0045]

[0046] Step 3: For each task stage, classify each environmental load into the corresponding load quantization method, and use the corresponding load quantization method to output the quantized output value of each load.

[0047] Step 3-1: Based on the different loads, as shown in Table 2, the following correspondences exist:

[0048] Table 2 Quantization methods for different loads

[0049]

[0050]

[0051] This paper summarizes the specific implementation processes of three load quantification methods: sensor-based measurement, structural mechanics finite element simulation, and dynamics finite element simulation. Sensor-based measurement directly acquires load parameter data from sensors, reflecting the magnitude of various loads through actual sensor measurements. Examples include thermocouple sensors measuring temperature, pressure sensors measuring pressure, and accelerometer sensors measuring vibration acceleration. For both electronic and non-electronic systems, it is necessary to determine the measurement point location of the corresponding signal within the system and to identify the sensor type and installation location. Commonly used sensor types are shown in Table 3.

[0052] Table 3. Main Sensor Categories and Applications

[0053]

[0054]

[0055] Step 3-2: Structural mechanics finite element simulation and dynamic finite element simulation are applicable to equipment under static and dynamic loads. By meshing the equipment structure, the results of load state changes are output. Mathematical methods can be used to analyze the load change process of the equipment's structure and kinematic pairs, thereby achieving quantitative load analysis. See attached diagram for details. Figure 3 , 4 As shown.

[0056] Step 3-3: Based on the types of loads experienced by the equipment in each mission phase, load quantification methods are implemented as follows, depending on the circumstances of multiple mission phases.

[0057] During transportation missions, equipment typically experiences loads from both natural environments such as high and low temperatures, relative humidity, and low air pressure, as well as induced environmental loads like impacts and vibrations. While loads from natural environments can be quantified using sensor data acquisition, analyzing loads from induced environments like impacts and vibrations is extremely costly due to the diverse types of ground equipment and complex road conditions. This limitation in engineering applications stems from the high manpower, material resources, and financial investment required for sensor-based analysis of transport loads under various conditions. Therefore, it is necessary to quantify the vibration acceleration and frequency loads experienced by the equipment under different transportation conditions using dynamic finite element simulation.

[0058] During the storage phase, equipment is typically stored statically in warehouses, where it experiences various loads, including high and low temperatures, relative humidity, low air pressure, salt spray, mold, solar radiation, chemical corrosion, and lightning. Since it is relatively easy to install sensors in a static state, the sensor measurement method can be used to quantify the equipment load during the storage phase.

[0059] During standby and training missions, equipment experiences loads primarily consisting of natural environmental loads such as high and low temperatures, low air pressure, relative humidity, salt spray, mold, solar radiation, chemical corrosion, and lightning strikes, as well as induced environmental loads such as electrical stress. For natural environmental loads, sensor-based measurements can be used for load quantification. For induced environmental loads, both sensor-based measurements and structural finite element simulation can be used simultaneously for load quantification.

[0060] During the mission preparation phase, equipment undergoes loads primarily consisting of natural environmental loads such as high and low temperatures, salt spray, mold, solar radiation, chemical corrosion, and lightning, as well as induced environmental loads such as vibration and noise from vehicle engines or power supply systems, temperature rise induced by power-on, electromagnetic interference, and electrical stress. For natural environmental loads, sensor-based measurement methods can be used for load quantification. For induced environmental loads, integrating sensor-based measurement methods, structural mechanics finite element simulation, and dynamics finite element simulation for load quantification provides data sufficient to support subsequent optimization of mission preparation. Therefore, during the mission preparation phase, a combination of sensor-based measurement methods, structural mechanics, and dynamics finite element simulation can be used for load quantification. Simultaneously, attention should be paid to the coordination between various load quantification methods to achieve the best efficiency with minimal economic cost.

[0061] During the mission execution phase, the equipment experiences loads primarily consisting of natural environmental loads such as high and low temperatures, low air pressure, solar radiation, and lightning, as well as induced environmental loads such as temperature rise induced by startup, engine-induced vibration and noise, aerodynamic noise, jet noise, aerodynamic heating temperature rise, vibration caused by airflow pulsation, acceleration, electromagnetic and electrical stress, and impact. For natural environmental loads, if appropriate sensors can be installed on the equipment, load quantification can be performed using sensor measurements. For induced environmental loads, the load data collected by sensors can guide mission execution in real time. However, before the mission execution phase, load quantification should be performed in advance using structural mechanics finite element simulation and dynamic finite element simulation to obtain load data and guide the optimization of the mission execution plan. Load quantification using simulation methods is not suitable during the mission execution phase.

[0062] During the maintenance phase, the loads experienced by the equipment are mostly natural environmental loads under atmospheric conditions. The equipment can be tested by adding sensors to collect test data, or maintenance work can be carried out based on the load quantification data from the previous mission phase. Therefore, the sensor measurement method can be used to quantify the load during the maintenance phase.

[0063] After determining the quantization method for the corresponding load, the corresponding load information is input into the corresponding quantization method to obtain the corresponding quantization output value.

[0064] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for quantifying equipment load considering mission phases, characterized in that, Includes the following steps: Step 1: Divide the equipment life cycle into mission phases, namely: transportation, storage, standby duty, training, mission preparation, mission execution and maintenance, for a total of seven phases. Step 2: Divide the environmental loads of each task phase into natural environmental loads and induced environmental loads; Step 3: For each task stage, classify each environmental load into the corresponding load quantization method, and use the corresponding load quantization method to output the quantized output value of each load. The load quantification method includes: measuring the natural environmental load in seven stages based on the load quantification method measured by sensors; For the environmental loads induced during the transportation phase, the dynamic finite element simulation method is used to quantify the loads. For the induced environmental loads during standby and training phases, load quantification is performed using sensor measurement and structural mechanics finite element simulation. For the induced environmental loads during the mission preparation phase, load quantification is performed by integrating sensor measurement methods, structural mechanics and dynamic finite element simulation methods. For the induced environmental loads during the mission execution phase, the sensor measurement method is used to quantify the loads. The method for classifying environmental loads into corresponding load quantification methods includes: During the transportation phase: the impact and vibration in the induced environmental loads are quantitatively measured using a load quantification method based on dynamic finite element simulation; Standby and training phases: The voltage value in the electrical stress under induced environmental load is quantized and measured using a load quantization method based on sensor measurement and a load quantization method based on structural mechanics finite element simulation, respectively. The average value of the quantization values ​​from the two methods is taken as the final output value. In the mission preparation phase: noise and electromagnetic interference in the induced environmental load are quantized using a load quantization method based on sensor measurements. The temperature and voltage values ​​in the electrical stress of the equipment are quantized using both a load quantization method based on sensor measurements and a load quantization method based on structural mechanics finite element simulation. The average of the quantized values ​​from the two methods is taken as the final output value. Vibration is quantized using both a load quantization method based on sensor measurements and a load quantization method based on dynamic finite element simulation. The average of the quantized values ​​from the two methods is taken as the final output value.

2. The method as described in claim 1, characterized in that, The natural environmental loads include: temperature, relative humidity, air pressure, solar radiation, chemical corrosion, and salt spray and mold concentration; the induced environmental loads include: impact, vibration, noise, equipment temperature, acceleration, electromagnetic interference, and electrical stress.

3. The method as described in claim 1, characterized in that, The environmental loads of each mission phase include: environmental loads during the transportation phase: natural environmental loads include temperature, relative humidity and air pressure, and induced environmental loads include the impact and vibration experienced by the equipment. Environmental loads during storage: only natural environmental loads such as temperature, relative humidity, air pressure, salt spray and mold concentration, solar radiation and chemical corrosion. Environmental loads during standby duty: Natural environmental loads include temperature, air pressure, relative humidity, salt spray and mold concentration, and chemical corrosion; induced environmental loads include electrical stress. Environmental loads during the training phase include: natural environmental loads such as temperature, air pressure, relative humidity, salt spray and mold concentration, solar radiation and chemical corrosion, and induced environmental loads such as electrical stress. Environmental loads during the mission preparation phase include: natural environmental loads such as temperature, salt spray and mold concentration, solar radiation and chemical corrosion, and induced environmental loads such as vibration, noise, equipment temperature, electromagnetic interference and electrical stress. Environmental loads during mission execution: Natural environmental loads include temperature, air pressure, and solar radiation; induced environmental loads include equipment temperature, vibration, noise, impact, acceleration, electromagnetic interference, and electrical stress. Environmental loads during the maintenance phase: only natural environmental loads such as temperature, air pressure, solar radiation, relative humidity, salt spray, mold concentration, and chemical corrosion.

4. The method as described in claim 1, characterized in that, The load quantization method based on sensor measurements includes: temperature sensor measurement method, electrical sensor measurement method, mechanical sensor measurement method, humidity sensor measurement method, optical sensor measurement method, magnetic sensor measurement method, vibration sensor measurement method, noise sensor measurement method, concentration sensor measurement method, air pressure sensor measurement method, and solar radiation sensor measurement method.

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