A method for improving the high dynamic launch capability of a load

Abstract

The present application relates to a kind of methods for improving the ability of high dynamic launch load, belong to the technical field of load launch control, solve the problem that existing margin is big, and miss the time window suitable for load launch easily.The present application includes determining load safety launch window time period according to load launch task execution cycle;Load safety launch window prediction duration is determined according to load safety launch window time period;Time series prediction is carried out using time series prediction model, input the time series of launch platform motion parameter history obtained, and output the time series of launch platform motion parameter prediction in prediction duration;The number and start and end time of safety launch window are determined according to prediction time series, load safety launch boundary and load safety launch window time period;According to number and start and end time, prediction duration, load launchable probability is calculated, and the load launchable probability is used to determine load high dynamic launch decision.The present application realizes the efficiency improvement of load high dynamic launch.

Description

Technical Field

[0001] This invention relates to the field of payload launch control technology, and in particular to a method for improving the high-dynamic launch capability of a payload. Background Technology

[0002] The platform's launch payload is stored within the launch device, with a gap between the launch device and the payload. A circumferential adapter and other devices restrict the payload's relative movement along the launch device's circumference. Before launch, the launch platform's rotational motion around the X, Y, and Z axes is transmitted to the payload through the launch device and adapter. The launch platform, launch device, and payload remain relatively stationary, maintaining consistent angular attitude and angular velocity parameters around the three coordinate axes.

[0003] During payload launch, the payload moves upward along the axial direction of the launch device under the action of launch thrust. The payload launch process is divided into two stages: (1) The payload is still within the launch device and does not break free from the adapter constraint. It only moves axially relative to the launch device, and the gap between the launch device and the payload does not change. (2) The payload breaks free from the adapter constraint. Under the action of inertia, the payload generates relative motion with the launch device, and the gap between the launch device and the payload begins to change dynamically. When the gap between the launch device and the payload is less than the safety threshold, the payload will scrape against the launch device, resulting in launch failure.

[0004] The rotational motion of the launch platform around the X and Y axes has the greatest impact on the change in the gap between the load and the launch device during launch. When the amplitude of the platform's rotational motion around the X and Y axes is small, the gap between the load and the launch device remains greater than the safety threshold during the relative motion of the load within the launch device, and the platform can launch the load at any time. As the amplitude of the launch platform's rotational motion around the X and Y axes increases, the gap between the load and the launch device will fall below the safety threshold. The maximum amplitude of the launch platform's rotational motion around the X and Y axes, corresponding to the condition that the gap between the load and the launch device remains greater than the safety threshold during launch, is defined as the safe launch boundary for the load.

[0005] Existing dynamic launch control methods for payloads specifically include: (1) calculating and obtaining the safe launch boundary values ​​for the payload, including the amplitude of the launch platform's rotation angle limit around the X-axis. Angular velocity limit around the X-axis , Amplitude limit of rotation angle around the Y-axis and the amplitude of the rotational angular velocity around the Y-axis (2) Define the duration of the current detection period. (3) Record the rotation angle of the launch platform around the X-axis during the detection period according to the detection frequency. Angular velocity of launch platform rotation around X-axis The launch platform rotates around the Y-axis at an angle and the angular velocity of the launch platform around the Y-axis ,in, i Indicates the first i Each detection time point. (4) Determine whether the recorded launch platform motion parameters exceed the load safe launch boundary value. If they are all less than the load safe launch boundary, as shown in the following formula:

[0006] The launch mission can then be performed at any time within the next time period. The length of the next time period is equal to the length of the detection period. Consistent. The launch will take place in the next time slot, not during the detection period.

[0007] like Figure 4 As shown, the platform's rotational motion around the X-axis and Y-axis is approximately sinusoidal oscillation. When the launch platform is in a low-amplitude oscillation motion, the parameters of the platform's rotational motion around the X-axis and Y-axis will not exceed the safe launch boundary of the payload.

[0008] If any platform motion parameter exceeds the payload's safe launch boundary during the detection period, as shown in the following formula:

[0009] The launch mission will be prohibited in the next time period.

[0010] like Figure 5 As shown, with the increase in the amplitude of the launch platform's rotational motion around the X-axis and Y-axis, one or more launch platforms will exhibit rotational motion parameters around the X-axis and Y-axis exceeding the launch safety boundary. According to existing payload dynamic launch control methods, the launch mission should be prohibited in the next time period. However, in actual launch platform movement, the rotational motion parameters around the X-axis and Y-axis may both fall below the safe launch boundary in the next time period, creating a suitable time window for payload launch. Figure 5 As shown. Therefore, existing dynamic payload launch control methods suffer from problems such as large margins and a tendency to miss suitable launch window times. Summary of the Invention

[0011] Based on the above analysis, the embodiments of the present invention aim to provide a method for improving the high dynamic launch capability of a payload, in order to solve the problem that existing methods have large margins and are prone to missing suitable launch window times.

[0012] On one hand, embodiments of the present invention provide a method for improving the high-dynamic launch capability of a payload, comprising the following steps: The safe launch window period for the payload is determined based on the payload launch mission execution cycle. The predicted duration of the payload safe launch window is determined based on the payload safe launch window time period; The time series prediction model is used to perform time series prediction. The historical time series of launch platform motion parameters are obtained as input, and the predicted time series of launch platform motion parameters within the prediction time of the payload safe launch window is output. Based on the predicted time series of the launch platform motion parameters, the safe launch boundary of the payload, and the safe launch window time period of the payload, the number of safe launch windows and their start and end times are determined. Based on the number and start and end times of the safe launch windows and the predicted duration of the safe launch windows, the probability of the payload being able to launch is calculated, and the probability of the payload being able to launch is used to determine the high-dynamic launch decision of the payload.

[0013] A further improvement to the above method involves determining the predicted duration of the payload-safe launch window based on the payload-safe launch window time period, including: The safe launch window period for the payload is determined based on the payload launch mission execution cycle and the launch mission safety margin requirements.

[0014] Based on a further improvement to the above method, the payload safe launch window time period is determined according to the payload launch mission execution cycle and launch mission safety margin requirements using the following formula:

[0015] in, Indicates the safe launch window time period. This indicates the time required to perform one payload launch mission. This indicates the safety margin requirements for the launch mission.

[0016] Based on a further improvement to the above method, the predicted duration of the payload-safe launch window is determined according to the payload-safe launch window time period using the following formula:

[0017] in, Predict the duration of the safe launch window for the payload; This indicates the safe launch window time period.

[0018] Based on a further improvement of the above method, the motion parameters of the launch platform include the launch platform rotation angle around the X-axis, the launch platform rotation angular velocity around the X-axis, the launch platform rotation angle around the Y-axis, and the launch platform rotation angular velocity around the Y-axis; or, the motion parameters of the launch platform include any combination of the launch platform rotation angle around the X-axis, the launch platform rotation angular velocity around the X-axis, the launch platform rotation angle around the Y-axis, the launch platform rotation angular velocity around the Y-axis, the launch platform rotation angle around the Z-axis, the launch platform rotation angular velocity around the Z-axis, the launch platform's velocity and acceleration along the X-axis, the launch platform's velocity and acceleration along the Y-axis, and the launch platform's velocity and acceleration along the Z-axis. The safe launch boundary of the payload is the upper and lower limits of the motion parameters of the launch platform.

[0019] Based on further improvements to the above method, the time series prediction model is a time series prediction model based on statistical methods or a time series prediction model based on deep learning methods. The time series prediction model based on statistical methods is the time series decomposition model Dlinear.

[0020] A further improvement to the above method, the step of determining the number and start / end time of the safe launch window based on the predicted time series of the launch platform motion parameters, the safe launch boundary of the payload, and the safe launch window time period of the payload, includes: The system sequentially determines whether the launch platform motion parameters at each time point of the predicted time series are within the payload safe launch boundary. If they are, the time point is recorded. If not, the system continues to determine whether the parameters are within the boundary. All recorded time points are counted, and subsequences with a duration greater than or equal to the payload safe launch window period are identified. The number of safe launch windows and their start and end times in each subsequence are then determined.

[0021] A further improvement to the above method, the step of determining the payload launch probability based on the number and start and end times of the safe launch windows and the predicted duration of the payload safe launch windows, includes: The total duration of the safe launch window is determined based on the number of safe launch windows and their start and end times. The probability that the payload can be launched is the ratio of the total duration of the safe launch window to the predicted duration of the safe launch window for the payload.

[0022] On the other hand, embodiments of the present invention provide an apparatus for improving the high-dynamic launch capability of a payload, comprising: The payload safe launch window time period module is used to determine the payload safe launch window time period based on the payload launch mission execution cycle. The payload safe launch window prediction duration determination module is used to determine the payload safe launch window prediction duration based on the payload safe launch window time period. The prediction module is used to perform time series prediction using a time series prediction model. It takes the historical time series of launch platform motion parameters as input and outputs the predicted time series of launch platform motion parameters within the prediction time of the payload safe launch window. The safe launch window determination module is used to determine the number and start and end times of the safe launch window based on the predicted time series of the launch platform motion parameters, the safe launch boundary of the payload, and the safe launch window time period of the payload. The payload launch probability determination module is used to determine the payload launch probability based on the number and start and end times of the safe launch windows and the predicted duration of the safe launch windows. The payload launch probability is used to determine the high-dynamic launch decision of the payload.

[0023] On the other hand, embodiments of the present invention provide a system for improving the high dynamic launch capability of a payload, comprising: a launch platform motion measurement device, the aforementioned device for improving the high dynamic launch capability of a payload, and a payload safe launch decision device; The launch platform motion measurement device is used to: measure the launch platform motion parameters and send them to the device for improving the high dynamic launch capability of the payload; The payload safe launch decision device is used to: receive the payload launch probability, the number of safe launch windows and the start and end times sent by the device for improving the payload high dynamic launch capability; and determine the payload high dynamic launch decision based on the number of safe launch windows and the start and end times, according to the payload launch probability.

[0024] Based on further improvements to the above system, the step of determining the high-dynamic launch decision of the payload according to the payload launch probability includes: If the probability of the payload being launchable is 1, then the launch mission can be performed at any time within the predicted duration of the payload's safe launch window. If 0 < the probability of the payload being able to be launched < 1, then any one of the multiple safe launch windows can be selected to execute the launch mission.

[0025] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: Based on the safe launch boundaries corresponding to each type of payload and the launch mission execution time requirements, the safe launch window time period for each type of payload is determined. A time series prediction model is used to predict the safe launch window of the payload within the predicted safe launch window duration. At the same time, a launch decision method is formulated to execute the launch mission using the safe launch window of the payload, thereby eliminating the problem of large margin in the existing dynamic launch control method of the payload and improving the launch efficiency of the launch platform during high dynamic motion.

[0026] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0027] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0028] Figure 1 This is a schematic diagram showing the motion relationship between the launch platform, launch device, and payload before launch; Figure 2 This is a schematic diagram showing the payload not escaping the adapter constraint during the dynamic launch process. Figure 3 This is a schematic diagram of a payload detaching from the adapter constraint during the dynamic launch process. Figure 4 This is a schematic diagram illustrating how the low-amplitude oscillation motion parameters of the launch platform are limited to the launch safety boundary in existing payload dynamic launch control methods. Figure 5 This is a schematic diagram illustrating the suitable time window for payload launch after the launch platform motion amplitude is increased, as defined in existing payload dynamic launch control methods. Figure 6 This is a flowchart of the method for improving the high dynamic emission capability of a payload in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram illustrating the working principle of the system for improving the high dynamic launch capability of the payload in Embodiment 3 of the present invention. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0030] Terminology Explanation 1. High-dynamic launch capability of the payload: The payload's ability to adapt to the multi-degree-of-freedom coupled motion of the launch platform. The higher the upper limit of the platform motion amplitude corresponding to the launch mission that the payload can perform, the stronger the payload's high-dynamic launch capability.

[0031] 2. Payload safe launch boundary: During the payload launch process, the gap between the launch device and the payload is always greater than the safety threshold. The corresponding launch platform motion parameter boundary is defined as the payload safe launch boundary.

[0032] 3. Payload safe launch window: The time window during which the launch platform's motion parameters are within the payload safe launch boundary.

[0033] This invention relates to a dynamic launch control method for payloads, and more particularly to a method for improving the high-dynamic launch capability of payloads. First, based on the safe launch boundaries of various payload types and the launch mission execution time requirements, the invention determines the safe launch window for each type of payload. Second, it employs deep learning to establish a payload safe launch window prediction method, and simultaneously formulates a launch decision method to utilize the predicted safe launch window. Finally, it constructs a dynamic launch control system for the payload, providing an engineering implementation method for improving the high-dynamic launch capability of payloads.

[0034] Example 1, One specific embodiment of the present invention discloses a method for improving the high-dynamic launch capability of a payload, such as... Figure 6 As shown, it includes the following steps: S11: Determine the safe launch window period for the payload based on the payload launch mission execution cycle.

[0035] In some embodiments, determining the payload-safe launch window prediction duration based on the payload-safe launch window time period includes: The safe launch window period for the payload is determined based on the payload launch mission execution cycle and the launch mission safety margin requirements.

[0036] In practice, the safe launch window period for the payload is determined based on the payload launch mission execution cycle and the launch mission's requirements for safety margin, as shown in the following formula.

[0037]

[0038] in, Indicates the safe launch window time period. This indicates the time required to perform one payload launch mission. This indicates the safety margin requirements for the launch mission. Value greater than Assume the time required to perform one payload launch mission is [length missing]. Given a launch mission safety margin requirement of 1.5 seconds, the safe launch window time period is... It takes 1.5 seconds.

[0039] The launch mission execution cycle and safety margin requirements differ for different types of payloads, and relevant constraint values ​​will be formulated in advance for different types of launch payloads.

[0040] S12: Determine the predicted duration of the payload safe launch window based on the payload safe launch window time period.

[0041] In practice, the predicted duration of the payload safe launch window is determined based on the payload launch mission requirements. ,in Assuming If the timeframe is 1.5s, then the predicted duration of the payload's safe launch window is... It must be no less than 3 seconds.

[0042] S13: Use a time series prediction model to perform time series prediction. Input the historical time series of launch platform motion parameters and output the predicted time series of launch platform motion parameters within the predicted time of the payload safe launch window.

[0043] In practice, the motion parameters of the launch platform can be the rotation angle of the launch platform around the X-axis. Angular velocity of launch platform rotation around X-axis The launch platform rotates around the Y-axis at an angle and the angular velocity of the launch platform around the Y-axis (The following description of the method of the present invention uses these four parameters as examples.) Alternatively, based on the payload launch safety requirements, any combination of the six free motion parameters of the launch platform can be used, including the launch platform rotation angle around the X-axis, the launch platform rotation angular velocity around the X-axis, the launch platform rotation angle around the Y-axis, the launch platform rotation angular velocity around the Y-axis, the launch platform rotation angle around the Z-axis, the launch platform rotation angular velocity around the Z-axis, the launch platform speed and acceleration along the X-axis, the launch platform speed and acceleration along the Y-axis, and the launch platform speed and acceleration along the Z-axis.

[0044] The payload safe launch boundary (which will be used later) can be the amplitude of the launch platform's rotation angle around the X-axis. The amplitude of the launch platform's rotational angular velocity around the X-axis is limited. The amplitude of the launch platform's rotation angle around the Y-axis is limited. and the amplitude of the launch platform's rotational angular velocity around the Y-axis. In other words, the payload safe launch boundary is the upper and lower limits of the launch platform's motion parameters. A safe launch window envelope can also be formed based on the payload safe launch boundary, and this safe launch window envelope includes the contents contained within the payload safe launch boundary.

[0045] During the safe launch window period Inside, if the launch platform rotates around the X-axis by an angle Angular velocity of launch platform rotation around X-axis The launch platform rotates around the Y-axis at an angle and the angular velocity of the launch platform around the Y-axis If all conditions are within the safe launch window envelope requirement, then it can be determined as a safe window suitable for payload launch.

[0046] In practice, the time series prediction model can be any statistically based or deep learning-based time series prediction model. This embodiment uses a decomposition linear model (Dlinear) for detailed description.

[0047] Using the time-series decomposition model Dlinear to The launch platform rotates around the X-axis by an angle during the time period. Angular velocity of launch platform rotation around X-axis The launch platform rotates around the Y-axis at an angle and the angular velocity of the launch platform around the Y-axis Perform time series forecasting.

[0048] Define each module of Dlinear, where the definition is as follows: Given the input time variable sequence, X for The matrix, The expression is as follows:

[0049] , It is a column vector, where, ,in =4 represents the number of predicted launch platform motion parameters, for example... The expression is as follows:

[0050] These are the predicted rotation angle of the launch platform around the X-axis, the angular velocity of the launch platform around the X-axis, the rotation angle of the launch platform around the Y-axis, and the angular velocity of the launch platform around the Y-axis, respectively. The length of the input time variable sequence is... The length of the output predicted time variable series is .

[0051] The time period for collecting historical data can be determined based on the predicted duration. The multiple relationship is used to determine the length of the predicted time variable sequence T, which is not specifically limited here. To determine.

[0052] To analyze the different components of a time variable series in a targeted manner, a moving average is used to decompose the time variable series into trend components. (Reflecting long-term changes, also in length L) and seasonal components (Reflecting periodic changes, with a length of L), defined as follows:

[0053]

[0054] The size of the moving average window is determined based on the period of the variable. For example, if the period of the launch platform's rotation angle around the X-axis is 3 seconds, then the moving average window size would be [value missing]. The average value of the data taken 1.5 seconds before and after the data is calculated.

[0055] Define a time decomposition module to implement the time series decomposition function, as follows:

[0056] Then, the two linear layers (for prediction) are defined as follows:

[0057]

[0058] in , Finally, the prediction results of the two linear layers are added together to obtain the final result. :

[0059] in, , .

[0060] Predicted Launch platform motion parameter sequence within the time period The expression is as follows:

[0061] in For example, a column vector The expression is as follows:

[0062] S13: Determine the number and start and end times of the safe launch window based on the predicted time series of the launch platform motion parameters, the safe launch boundary of the payload, and the safe launch window time period of the payload.

[0063] In some embodiments, determining the number and start / end time of a safe launch window based on the predicted time series of the launch platform motion parameters, the safe launch boundary of the payload, and the safe launch window time period of the payload includes: The system sequentially determines whether the launch platform motion parameters at each time point of the predicted time series are within the payload safe launch boundary. If they are, the time point is recorded. If not, the system continues to determine whether the parameters are within the boundary. All recorded time points are counted, and subsequences with a duration greater than or equal to the payload safe launch window period are identified. The number of safe launch windows and their start and end times in each subsequence are then determined.

[0064] Specifically, the number of safe launch windows and their start and end times in each subsequence are determined as follows: The duration between the first time point and each subsequent time point is determined. When the duration between the first time point and one of the subsequent time points is first greater than or equal to the payload safe launch window period, the time period from the first time point to that time point is defined as a safe launch window. The start and end times of this safe launch window are the first time point and that time point. The above operation continues from the next time point until the last time point of the subsequence. If the duration between the next time point and the last time point is less than the payload safe launch window period, it does not belong to a safe launch window.

[0065] If no subsequence with a duration greater than or equal to the payload safe launch window period is found, then in the predicted duration... Launch cannot be carried out within the current timeframe and must wait for the next predicted duration. Re-predict and assess.

[0066] In practice, each item will be tested individually. , , as well as From the first row vector to the Tth row vector, assume , , as well as The values ​​of the l-th row vector and the m-th row vector are all within the safe transmission window envelope. Record the time corresponding to the l-th row vector. and the time corresponding to the m-th row vector ,like If this is the case, then the time period can be determined as a safe transmission window. Then, the detection continues from the (m+1)th row vector.

[0067] The prediction time period is identified using this method. The existing secure emission windows are provided, along with their start and end time sequences. , Here, k represents the k-th launch window.

[0068] S15: Based on the number and start / end times of the safe launch windows and the predicted duration of the payload safe launch windows, calculate the payload launch probability. This payload launch probability is used to determine the payload's high-dynamic launch decision. In some embodiments, determining the payload launch probability based on the number and start / end times of the secure launch windows and the predicted duration of the payload secure launch windows includes: The total duration of the safe launch window is determined based on the number of safe launch windows and their start and end times. The probability that the payload can be launched is the ratio of the total duration of the safe launch window to the predicted duration of the safe launch window for the payload.

[0069] In practice, it is based on the predicted time period. The payload's safe launch window data is identified internally, and the probability of payload launch is calculated. As shown in the following formula.

[0070]

[0071]

[0072] in, This indicates the start time of the k-th safe launch window. This indicates the end time of the k-th safe launch window. This indicates the duration of the k-th safe launch window. It outputs the time corresponding to the last value of the predicted sequence minus the time corresponding to the first value.

[0073] Secure launch window data ( and and payload launch probability The data is sent to the payload safety launch decision-making unit (mentioned later), which then calculates and predicts the time period. Internal payload launch probability Perform high-dynamic launch decisions for the payload. When Then, in the time period Launch missions can be carried out at any time within the system. Then, in the time period Based on the mission requirements, one of the n safe launch windows is selected, and the start time of the selected safe launch window is used as the trigger signal for executing the payload launch mission.

[0074] Alternatively, the device implementing this method (which will be mentioned later) can be used to calculate and predict the time period. Internal payload launch probability The system makes a high-dynamic launch decision for the payload. Then, it informs the payload safety launch decision-making device of the launch time, which then executes the payload launch.

[0075] Compared with the prior art, the method for improving the high dynamic transmission capability of a payload provided in this embodiment can achieve the following beneficial effects: Based on the safe launch boundaries corresponding to each type of payload and the launch mission execution time requirements, the safe launch window time period for each type of payload is determined. A time series prediction model is used to predict the safe launch window of the payload within the predicted safe launch window duration. At the same time, a launch decision method is formulated to execute the launch mission using the safe launch window of the payload, thereby eliminating the problem of large margin in the existing dynamic launch control method of the payload and improving the launch efficiency of the launch platform during high dynamic motion.

[0076] Example 2, Another embodiment of the present invention discloses a device for improving the high-dynamic launch capability of a payload, thereby implementing the method for improving the high-dynamic launch capability of a payload in Embodiment 1. The specific implementation of each module is described in the corresponding description in Embodiment 1, including: The payload safe launch window time period module is used to determine the payload safe launch window time period based on the payload launch mission execution cycle. The payload safe launch window prediction duration determination module is used to determine the payload safe launch window prediction duration based on the payload safe launch window time period. The prediction module is used to perform time series prediction using a time series prediction model. It takes the historical time series of launch platform motion parameters as input and outputs the predicted time series of launch platform motion parameters within the prediction time of the payload safe launch window. The safe launch window determination module is used to determine the number and start and end times of the safe launch window based on the predicted time series of the launch platform motion parameters, the safe launch boundary of the payload, and the safe launch window time period of the payload. The payload launch probability determination module is used to determine the payload launch probability based on the number and start and end times of the safe launch windows and the predicted duration of the safe launch windows. The payload launch probability is used to determine the high-dynamic launch decision of the payload.

[0077] Compared with the prior art, the device for improving the high dynamic emission capability of a payload provided in this embodiment can achieve the following beneficial effects: Based on the safe launch boundaries corresponding to each type of payload and the launch mission execution time requirements, the safe launch window time period for each type of payload is determined. A time series prediction model is used to predict the safe launch window of the payload within the predicted safe launch window duration. At the same time, a launch decision method is formulated to execute the launch mission using the safe launch window of the payload, thereby eliminating the problem of large margin in the existing dynamic launch control method of the payload and improving the launch efficiency of the launch platform during high dynamic motion.

[0078] Example 3, Another embodiment of the present invention discloses a system for improving the high dynamic launch capability of a payload, comprising: a launch platform motion measurement device, a device for improving the high dynamic launch capability of a payload, and a high dynamic launch decision device for a payload.

[0079] The launch platform motion measurement device is used to: measure the launch platform motion parameters and send them to the device for improving the high dynamic launch capability of the payload; The payload safe launch decision device is used to: receive the payload launch probability, the number of safe launch windows and the start and end times sent by the device for improving the payload high dynamic launch capability; and determine the payload high dynamic launch decision based on the number of safe launch windows and the start and end times, according to the payload launch probability.

[0080] In some embodiments, determining the payload high-dynamic launch decision based on the payload launch probability includes: If the probability of the payload being launchable is 1, then the launch mission can be performed at any time within the predicted duration of the payload's safe launch window. If 0 < the probability of the payload being able to be launched < 1, then any one of the multiple safe launch windows can be selected to execute the launch mission.

[0081] In practice, the launch platform motion measurement device can measure the launch platform's rotation angle around the X-axis in real time. Angular velocity of launch platform rotation around X-axis The launch platform rotates around the Y-axis at an angle and the angular velocity of the launch platform around the Y-axis The data is sent to a device for improving the high-dynamic transmission capability of the payload. Based on the received data, the device for improving the high-dynamic transmission capability of the payload predicts the time period. The system predicts and identifies the safe launch window for the payload, and combines the safe launch window data with the probability of payload launch. Send to the payload safety launch decision unit. The payload safety launch decision unit, based on... The range of values ​​determines the prediction time period. The launch strategy within the selected safe launch window includes determining the launch trigger time within that window. See details below. Figure 7As shown.

[0082] Compared with the prior art, the system for improving the high-dynamic launch capability of a payload provided in this embodiment can achieve the following beneficial effects: Based on the safe launch boundaries corresponding to each type of payload and the launch mission execution time requirements, the safe launch window time period for each type of payload is determined. A time series prediction model is used to predict the safe launch window of the payload within the predicted safe launch window duration. At the same time, a launch decision method is formulated to execute the launch mission using the safe launch window of the payload, thereby eliminating the problem of large margin in the existing dynamic launch control method of the payload and improving the launch efficiency of the launch platform during high dynamic motion.

[0083] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the corresponding computer program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0084] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for improving the high-dynamic launch capability of a payload, characterized in that, Includes the following steps: The safe launch window period for the payload is determined based on the payload launch mission execution cycle. The predicted duration of the payload safe launch window is determined based on the payload safe launch window time period; The time series prediction model is used to perform time series prediction. The historical time series of launch platform motion parameters are obtained as input, and the predicted time series of launch platform motion parameters within the prediction time of the payload safe launch window is output. Based on the predicted time series of the launch platform motion parameters, the safe launch boundary of the payload, and the safe launch window time period of the payload, the number of safe launch windows and their start and end times are determined. Based on the number and start and end times of the safe launch windows and the predicted duration of the safe launch windows, the probability of the payload being able to launch is calculated, and the probability of the payload being able to launch is used to determine the high-dynamic launch decision of the payload.

2. The method for improving the high-dynamic launch capability of a payload according to claim 1, characterized in that, Determining the predicted duration of the payload-safe launch window based on the payload-safe launch window time period includes: The safe launch window period for the payload is determined based on the payload launch mission execution cycle and the launch mission safety margin requirements.

3. The method for improving the high-dynamic launch capability of a payload according to claim 1, characterized in that, The payload safe launch window time period is determined according to the payload launch mission execution cycle and launch mission safety margin requirements using the following formula: in, Indicates the safe launch window time period. This indicates the time required to perform one payload launch mission. This indicates the safety margin requirements for the launch mission.

4. The method for improving the high-dynamic launch capability of a payload according to claim 1, characterized in that, The predicted duration of the payload safe launch window is determined according to the payload safe launch window time period using the following formula: in, Predict the duration of the safe launch window for the payload; This indicates the safe launch window time period.

5. The method for improving the high-dynamic launch capability of a payload according to claim 1, characterized in that, The launch platform motion parameters include the launch platform rotation angle around the X-axis, the launch platform rotation angular velocity around the X-axis, the launch platform rotation angle around the Y-axis, and the launch platform rotation angular velocity around the Y-axis; or, the launch platform motion parameters include any combination of the launch platform rotation angle around the X-axis, the launch platform rotation angular velocity around the X-axis, the launch platform rotation angle around the Y-axis, the launch platform rotation angular velocity around the Y-axis, the launch platform rotation angle around the Z-axis, the launch platform rotation angular velocity around the Z-axis, the launch platform's velocity and acceleration along the X-axis, the launch platform's velocity and acceleration along the Y-axis, and the launch platform's velocity and acceleration along the Z-axis. The safe launch boundary of the payload is the upper and lower limits of the motion parameters of the launch platform.

6. The method for improving the high-dynamic launch capability of a payload according to claim 1, characterized in that, Based on the predicted time series of the launch platform motion parameters, the payload safe launch boundary, and the payload safe launch window time period, the number and start and end times of the safe launch window are determined, including: The system sequentially determines whether the launch platform motion parameters at each time point of the predicted time series are within the payload safe launch boundary. If they are, the time point is recorded. If not, the system continues to determine whether the parameters are within the boundary. All recorded time points are counted, and subsequences with a duration greater than or equal to the payload safe launch window period are identified. The number of safe launch windows and their start and end times in each subsequence are then determined.

7. The method for improving the high-dynamic launch capability of a payload according to claim 1 or 6, characterized in that, The step of determining the payload launch probability based on the number and start / end times of the safe launch windows and the predicted duration of the payload safe launch windows includes: The total duration of the safe launch window is determined based on the number of safe launch windows and their start and end times. The probability that the payload can be launched is the ratio of the total duration of the safe launch window to the predicted duration of the safe launch window for the payload.

8. A device for improving the high-dynamic launch capability of a payload, characterized in that, include: The payload safe launch window time period module is used to determine the payload safe launch window time period based on the payload launch mission execution cycle. The payload safe launch window prediction duration determination module is used to determine the payload safe launch window prediction duration based on the payload safe launch window time period. The prediction module is used to perform time series prediction using a time series prediction model. It takes the historical time series of launch platform motion parameters as input and outputs the predicted time series of launch platform motion parameters within the prediction time of the payload safe launch window. The safe launch window determination module is used to determine the number and start and end times of the safe launch window based on the predicted time series of the launch platform motion parameters, the safe launch boundary of the payload, and the safe launch window time period of the payload. The payload launch probability determination module is used to determine the payload launch probability based on the number and start and end times of the safe launch windows and the predicted duration of the safe launch windows. The payload launch probability is used to determine the high-dynamic launch decision of the payload.

9. A system for improving the high-dynamic launch capability of a payload, characterized in that, include: Launch platform motion measurement device, device for improving high dynamic launch capability of payload as described in claim 8, and payload safe launch decision device; The launch platform motion measurement device is used to: measure the launch platform motion parameters and send them to the device for improving the high dynamic launch capability of the payload; The payload safe launch decision device is used to: receive the payload launch probability, the number of safe launch windows and the start and end times sent by the device for improving the payload high dynamic launch capability; and determine the payload high dynamic launch decision based on the number of safe launch windows and the start and end times, according to the payload launch probability.

10. The system for improving the high-dynamic launch capability of a payload according to claim 9, characterized in that, The step of determining the high-dynamic launch decision of the payload based on the payload launch probability includes: If the probability of the payload being launchable is 1, then the launch mission can be performed at any time within the predicted duration of the payload's safe launch window. If 0 < the probability of the payload being able to be launched < 1, then any one of the multiple safe launch windows can be selected to execute the launch mission.

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