CN117268338A - Marine rocket launching platform attitude dip angle testing method - Google Patents
Marine rocket launching platform attitude dip angle testing method Download PDFInfo
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- CN117268338A CN117268338A CN202311534607.3A CN202311534607A CN117268338A CN 117268338 A CN117268338 A CN 117268338A CN 202311534607 A CN202311534607 A CN 202311534607A CN 117268338 A CN117268338 A CN 117268338A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a method for testing the attitude inclination angle of an offshore rocket launching platform, belongs to the technical field of rocket launching, and solves the technical problem that a test result drifts due to poor base station signals caused by offshore launching far away from a roadbed. It comprises the following steps: s1, providing a test scheme according to a rocket launching platform system, and arranging a plurality of measuring points; s2, respectively installing inclination angle sensors on a plurality of measuring points, and respectively connecting the plurality of inclination angle sensors with a data acquisition system in a communication way; s3, correspondingly setting acquisition parameters of a data acquisition system according to performance parameters of the plurality of inclination sensors, performing comparison reference calibration on the inclination sensors arranged on the same axis, and initializing the system after the plurality of inclination sensors are calibrated; s4, collecting and exporting data; s5, analyzing the data to obtain the attitude condition of the platform in the test stage. The method has the advantages of wide application range, accurate data acquisition and capability of better describing the attitude of the offshore rocket launching platform.
Description
Technical Field
The invention relates to the technical field of rocket launching, in particular to a method for testing the attitude inclination angle of an offshore rocket launching platform.
Background
In recent years, with the market scale of the commercial aerospace industry of the carrier rockets in China, the market potential is huge, but the maritime carrier rocket aerospace launching is an important means and key development trend of commercial aerospace in China due to the fact that the land launching field capability is saturated.
One of the very important factors in successful launch of an offshore launch vehicle is that the launch conditions are met in the same near steady state as in land launch, i.e. the need to ensure that the hull roll pitch cannot exceed a specified angle at the moment of launch is required for the offshore launch vehicle, otherwise the initial offset angle may cause the launch vehicle to deviate from a predetermined trajectory, even with serious consequences that cannot be estimated.
Most of the existing attitude test methods utilize GPS positioning technology, offshore emission is far away from roadbed, and base station signal distance is far enough with a certain error, so that a test result drifts.
Therefore, a perfect and accurate attitude dip angle test method is needed to solve the above problems during the launching of the marine launch vehicle.
Disclosure of Invention
In order to solve the problems, the invention provides a perfect and accurate method for testing the attitude inclination angle of an offshore rocket launching platform.
The invention provides the following technical scheme:
the invention provides a method for testing the attitude inclination angle of an offshore rocket launching platform, which comprises the following steps:
s1, providing a test scheme according to a rocket launching platform system, and arranging a plurality of measuring points;
s2, respectively installing inclination angle sensors on a plurality of measuring points, and respectively connecting the plurality of inclination angle sensors with a data acquisition system in a communication way;
s3, correspondingly setting acquisition parameters of a data acquisition system according to performance parameters of the plurality of inclination sensors, performing comparison reference calibration on the inclination sensors arranged on the same axis, and initializing the system after the plurality of inclination sensors are calibrated;
s4, collecting and exporting data;
s5, analyzing the data to obtain the attitude condition of the platform in the test stage.
Alternatively or preferably, the rocket launching platform system comprises a rocket body, a rocket launcher carrying the rocket body and an offshore rocket launching platform, wherein the rocket launcher is arranged at the upper central position of the offshore rocket launching platform.
Optionally or preferably, the method for arranging the plurality of measuring points in S1 includes the following steps:
s11, setting a second inclination sensor on the offshore rocket launching platform and right below the rocket body;
s12, arranging an inclination sensor III on the tail part of a deck of the offshore rocket launching platform and on the same transverse axis with the inclination sensor II;
s13, arranging an inclination sensor IV on one side of a deck of the offshore rocket launching platform and two longitudinal axes which are positioned on the same longitudinal axis as the inclination sensor;
s14, arranging a first inclination sensor on the shipboard side of the offshore rocket launching platform and on the same vertical axis as the two inclination sensors;
and S15, connecting the first inclination sensor, the second inclination sensor, the third inclination sensor and the fourth inclination sensor with the data acquisition system through communication cables respectively.
Optionally or preferably, the method for performing comparative reference calibration on the tilt sensor located on the same axis in S3 includes the following steps:
s31, installing an inclination sensor and setting test parameters of a data acquisition system;
s32, carrying out pre-parameter acquisition, wherein as the offshore rocket launching platform shakes, the inclination angle sensor positioned on the same axis acquires inclination angle change data on the same axis, including reference datamAnd reference datanThe data acquisition time is 60s;
s33, respectively intercepting the collected inclination angle change data for 10 sections, wherein the duration of each intercepted section is 6S;
s34, selecting the maximum value, the minimum value and the average value of the data in each cut segment, taking a difference value, and judging whether the data is in a specified interval or not;
and S35, judging the installation position of the inclination sensor, if the difference values are in the specified interval, judging that the installation of the inclination sensor is correct, otherwise, judging that the installation of the inclination sensor is wrong, and reinstalling and repeating the steps S31 to S34 until the installation is in accordance with the requirements.
Optionally or preferably, the method for determining whether each difference value is in the specified interval in S34 is as follows:
wherein,for reference datamThe maximum value of data within each truncated segment,for reference datanData maximum value in each cut segment;
for reference datamData minimum within each truncated segment,for reference datanData minimum in each cut segment;
for reference datamThe average value of the data for each truncated segment in (c),for reference datanData average for each truncated segment in (a).
Optionally or preferably, the method for performing data analysis in S5 includes the steps of:
s51, after the test is finished, acquiring acquisition data of each inclination angle sensor, wherein the acquisition data comprise time data and axis inclination angle values;
s52, segmenting the axis inclination angle value;
s53, calculating peak-peak value and average value of the inclination angle value of each section of axis, and respectively obtaining a peak-peak value sequence and average value sequence of the complete test time;
s54, taking time as an abscissa and a peak-peak value and average value sequence as an ordinate to obtain a platform attitude data analysis image of the whole testing stage, wherein the peak-peak value is the maximum shaking condition of the platform of the whole testing stage, and the average value is the balance deviation condition of the platform of the whole testing stage.
Based on the technical scheme, the invention at least has the following technical effects:
according to the attitude dip angle testing method for the offshore rocket launching platform, provided by the invention, the attitude change of the key part of the launching platform can be accurately measured by arranging the plurality of dip angle sensor measuring points, and the calibration and comparison of the collected data of the plurality of dip angle sensors can be realized by the axial line position relation among the plurality of dip angle sensors; through analysis of the acquired data, the attitude change of the offshore rocket launching platform in each axis direction can be accurately described.
Drawings
FIG. 1 is a flow chart of a method for testing attitude dip angle of an offshore rocket launching platform according to the present invention;
FIG. 2 is a side view of the arrangement of tilt sensors in the attitude tilt testing method of the offshore rocket launching platform of the present invention;
FIG. 3 is a top view of the arrangement of tilt sensors in the method for testing the attitude tilt of an offshore rocket launching platform according to the present invention;
FIG. 4 is a graph of peak-to-peak and average values over time for the attitude dip test method of an offshore rocket launching platform according to the present invention.
In the figure: 1. a rocket launcher; 2. a rocket body; 3. a communication cable; 4. a data acquisition system; 5. an offshore rocket launching platform; 6. an inclination angle sensor I; 7. a second inclination sensor; 8. an inclination angle sensor III; 9. and a tilt angle sensor IV.
Detailed Description
The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; it is apparent that the described embodiments are only some embodiments of the present invention, not all of them, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making any inventive effort are within the scope of the present invention.
Examples
Referring to fig. 1 to 4, a method for testing attitude and inclination angle of an offshore rocket launching platform includes the following steps:
s1, providing a test scheme according to a rocket launching platform system, and arranging a plurality of measuring points;
the rocket launching platform system comprises a rocket body 2, a rocket launching frame 1 carrying the rocket body 2 and an offshore rocket launching platform 5, wherein the rocket launching frame 1 is arranged at the upper center position of the offshore rocket launching platform 5;
the arrangement method of the plurality of measuring points comprises the following steps:
s11, an inclination sensor II 7 is arranged on the offshore rocket launching platform 5 and is positioned right below the rocket body 2;
s12, arranging an inclination sensor III 8 on the tail of a deck of the marine rocket launching platform 5 and on the same transverse axis (namely X axis) with the inclination sensor II 7;
s13, arranging an inclination sensor IV 9 on one side of a deck of the marine rocket launching platform 5 and positioned on the same longitudinal axis (namely a Y axis) with the inclination sensor II 7;
s14, arranging a first inclination sensor 6 on the side of the ship board of the marine rocket launching platform 5 and on the same vertical axis (namely a Z axis) with the second inclination sensor 7;
and S15, the first inclination sensor 6, the second inclination sensor 7, the third inclination sensor 8 and the fourth inclination sensor 9 are respectively connected with the data acquisition system 4 through the communication cable 3.
S2, respectively installing inclination angle sensors on a plurality of measuring points, and respectively connecting the plurality of inclination angle sensors with a data acquisition system 4 in a communication way; the plurality of inclination sensors are connected with the data acquisition system 4 through a communication cable 3, as shown by dotted lines in fig. 2 to 3;
s3, correspondingly setting acquisition parameters of a data acquisition system 4 according to performance parameters of a plurality of inclination sensors, performing comparison reference calibration on the inclination sensors arranged on the same axis, and performing system initialization after the plurality of inclination sensors are calibrated;
the method for comparing and calibrating the inclination angle sensor positioned on the same axis comprises the following steps:
s31, installing an inclination sensor and setting test parameters of the data acquisition system 4;
s32, carrying out pre-parameter acquisition, wherein as the offshore rocket launching platform 5 shakes, the inclination angle sensor positioned on the same axis acquires inclination angle change data on the same axis, including reference datamAnd reference datanThe data acquisition time is 60s;
s33, respectively intercepting the collected inclination angle change data for 10 sections, wherein the duration of each intercepted section is 6S;
s34, selecting the maximum value, the minimum value and the average value of the data in each cut segment, taking a difference value, and judging whether the data is in a specified interval or not;
the method for judging whether each difference value is in a specified interval is as follows:
wherein,for reference datamThe maximum value of data within each truncated segment,for reference datanData maximum value in each cut segment;
for reference datamData minimum within each truncated segment,for reference datanData minimum in each cut segment;
for reference datamThe average value of the data for each truncated segment in (c),for reference datanData average for each truncated segment in (a).
And S35, judging the installation position of the inclination sensor, if the difference values are in the specified interval, judging that the installation of the inclination sensor is correct, otherwise, judging that the installation of the inclination sensor is wrong, and reinstalling and repeating the steps S31 to S34 until the installation is in accordance with the requirements.
S4, collecting and exporting data;
s5, analyzing the data to obtain the attitude condition of the platform in the test stage;
the data analysis method comprises the following steps:
s51, after the test is finished, acquiring acquisition data of each inclination angle sensor, wherein the acquisition data comprise time data and axis inclination angle values;
s52, segmenting the axis inclination angle value;
s53, calculating peak-peak value and average value of the inclination angle value of each section of axis, and respectively obtaining a peak-peak value sequence and average value sequence of the complete test time;
s54, taking time as an abscissa and a peak-peak value and average value sequence as an ordinate to obtain a platform attitude data analysis image of the whole testing stage, wherein the peak-peak value is the maximum shaking condition of the platform of the whole testing stage, and the average value is the balance deviation condition of the platform of the whole testing stage.
In this embodiment, the data processing method for selecting the first tilt sensor 6, the second tilt sensor 7, the third tilt sensor 8 and the fourth tilt sensor 9 is as follows:
after the process test is finished, the data collected by the first inclination sensor 6, the second inclination sensor 7, the third inclination sensor 8 and the fourth inclination sensor 9 are respectively saved as dateA, dateB, dateC and dateD, and in this embodiment, dateB test is taken as an example for 30 minutes:
1) The obtained dateB data comprise first column time data, second column X-axis inclination angle data and third column Y-axis inclination angle data;
2) The second and third columns of dateB data are each segmented every 30 seconds, and since the wave fluctuation period of sea conditions is about 4-6 seconds, 30 seconds can contain at least 4 complete fluctuation periods, and are divided into 30×60≡30=60 segments;
3) Respectively solving peak-peak values of all divided data segments, wherein the peak-peak values are data maximum values-data minimum values in the data segments;
the second column of X-axis dip angle numerical calculation is:
peak_dateB_X_i=max_dateB_X_i- min_dateB_X_i，(i=1,2,3……60)；
a peak-to-peak sequence per 30 seconds of complete test time was obtained:
[peak_dateB_X_1；peak_dateB_X_2；peak_dateB_X_3；……；peak_dateB_X_60]；
4) Respectively averaging all divided data segments, wherein the average value is = (data maximum value in the data segment + data minimum value in the data segment)/2;
the second column of X-axis dip angle numerical calculation is:
mean_dateB_X_i=（max_dateB_X_i+min_dateB_X_i）÷2，(i=1,2,3……60)；
an average sequence of every 30 seconds for the complete test time was obtained:
[mean_dateB_X_1；mean_dateB_X_2；mean_dateB_X_3；……；mean_dateB_X_60]；
5) Drawing, namely, obtaining a platform posture data analysis chart of the whole testing stage by taking time as an abscissa and a peak-peak value sequence and an average value sequence as an ordinate, and referring to fig. 4, it can be seen from the chart that the posture condition of the platform of the whole testing stage is as follows: the peak-to-peak value represents the maximum shaking condition of the platform during the whole test period, and the average value represents the balance shift condition of the platform during the whole test period.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The method for testing the attitude inclination angle of the marine rocket launching platform is characterized by comprising the following steps of:
s1, providing a test scheme according to a rocket launching platform system, and arranging a plurality of measuring points;
s2, respectively installing inclination angle sensors on a plurality of measuring points, and respectively connecting the plurality of inclination angle sensors with a data acquisition system (4) in a communication way;
s3, correspondingly setting acquisition parameters of a data acquisition system (4) according to performance parameters of a plurality of inclination sensors, performing comparison reference calibration on the inclination sensors arranged on the same axis, and performing system initialization after the plurality of inclination sensors are calibrated;
s4, collecting and exporting data;
s5, analyzing the data to obtain the attitude condition of the platform in the test stage.
2. The method for testing the attitude inclination angle of an offshore rocket launching platform according to claim 1, wherein the rocket launching platform system comprises a rocket body (2), a rocket launching cradle (1) carrying the rocket body (2) and an offshore rocket launching platform (5), and the rocket launching cradle (1) is arranged at the upper center position of the offshore rocket launching platform (5).
3. A method for testing the attitude inclination angle of an offshore rocket launching platform according to claim 2, wherein the method for arranging a plurality of measuring points in S1 comprises the following steps:
s11, an inclination sensor II (7) is arranged on the offshore rocket launching platform (5) and is positioned right below the rocket body (2);
s12, arranging an inclination sensor III (8) on the tail of a deck of the marine rocket launching platform (5) and on the same transverse axis with the inclination sensor II (7);
s13, arranging a fourth inclination sensor (9) on one side of a deck of the marine rocket launching platform (5) and on the same longitudinal axis with the second inclination sensor (7);
s14, arranging a first inclination sensor (6) on the side of the ship board of the marine rocket launching platform (5) and on the same vertical axis as the second inclination sensor (7);
s15, the first inclination sensor (6), the second inclination sensor (7), the third inclination sensor (8) and the fourth inclination sensor (9) are respectively connected with the data acquisition system (4) through the communication cable (3).
4. A method for testing the attitude inclination angle of an offshore rocket launching platform according to claim 2, wherein the method for performing comparative reference calibration on the inclination angle sensor positioned on the same axis in S3 comprises the following steps:
s31, installing an inclination sensor and setting test parameters of a data acquisition system (4);
s32, collecting pre-parameters, wherein as the offshore rocket launching platform (5) shakes, the inclination angle sensor positioned on the same axis collects inclination angle change data on the same axis, including reference datamAnd reference datanThe data acquisition time is 60s;
s33, respectively intercepting the collected inclination angle change data for 10 sections, wherein the duration of each intercepted section is 6S;
s34, selecting the maximum value, the minimum value and the average value of the data in each cut segment, taking a difference value, and judging whether the data is in a specified interval or not;
and S35, judging the installation position of the inclination sensor, if the difference values are in the specified interval, judging that the installation of the inclination sensor is correct, otherwise, judging that the installation of the inclination sensor is wrong, and reinstalling and repeating the steps S31 to S34 until the installation is in accordance with the requirements.
5. The method for testing the attitude and inclination angle of an offshore rocket launching platform according to claim 4, wherein the step of determining whether each difference is within a predetermined interval in S34 is as follows:
wherein,for reference datamThe maximum value of data within each truncated segment,for reference datanData maximum value in each cut segment;
for reference datamData minimum within each truncated segment,for reference datanData minimum in each cut segment;
for reference datamThe average value of the data for each truncated segment in (c),for reference datanData average for each truncated segment in (a).
6. A method for testing the attitude and dip angle of an offshore rocket launching platform according to claim 2, wherein the method for data analysis in S5 comprises the steps of:
s51, after the test is finished, acquiring acquisition data of each inclination angle sensor, wherein the acquisition data comprise time data and axis inclination angle values;
s52, segmenting the axis inclination angle value;
s53, calculating peak-peak value and average value of the inclination angle value of each section of axis, and respectively obtaining a peak-peak value sequence and average value sequence of the complete test time;
s54, taking time as an abscissa and a peak-peak value and average value sequence as an ordinate to obtain a platform attitude data analysis image of the whole testing stage, wherein the peak-peak value is the maximum shaking condition of the platform of the whole testing stage, and the average value is the balance deviation condition of the platform of the whole testing stage.
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Citations (3)
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| US20210147099A1 (en) * | 2017-06-08 | 2021-05-20 | Avio S.P.A. | Attitude control and thrust boosting system and method for space launchers |
| CN114114918A (en) * | 2021-11-25 | 2022-03-01 | 中国人民解放军63921部队 | Stable control platform and stable control method for launching offshore rocket |
| CN116499426A (en) * | 2023-04-27 | 2023-07-28 | 福建国电风力发电有限公司 | Wind power tower inclination and deformation monitoring method based on attitude calculation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210147099A1 (en) * | 2017-06-08 | 2021-05-20 | Avio S.P.A. | Attitude control and thrust boosting system and method for space launchers |
| CN114114918A (en) * | 2021-11-25 | 2022-03-01 | 中国人民解放军63921部队 | Stable control platform and stable control method for launching offshore rocket |
| CN116499426A (en) * | 2023-04-27 | 2023-07-28 | 福建国电风力发电有限公司 | Wind power tower inclination and deformation monitoring method based on attitude calculation |
Non-Patent Citations (1)
| Title |
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| 刘乾坤;刘?春;罗艳媚;俞国燕;: "自升式海洋平台平衡升降控制策略及试验", 船舶工程, no. 03, 25 March 2020 (2020-03-25) * |
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