CN-121994435-A - Vibration response detection device for unmanned aerial vehicle seeker and detection method thereof

CN121994435ACN 121994435 ACN121994435 ACN 121994435ACN-121994435-A

Abstract

The application discloses a vibration response detection device and a detection method for a guide head of an unmanned aerial vehicle, wherein the vibration response detection device comprises a vibration tool, a switching tool and a group of acceleration sensors, and the three mounting point sensors are arranged near the connection point of a bottom plate and a vibration table; the unmanned aerial vehicle steering head comprises a steering tool sensor, an azimuth axis sensor, two pitching axis sensors and an unmanned aerial vehicle steering head, wherein the steering tool sensor is arranged on the steering tool, the azimuth axis sensor is arranged on an azimuth axis housing of the unmanned aerial vehicle steering head, and the two pitching axis sensors are arranged on a pitching axis housing of the unmanned aerial vehicle steering head. The mounting point sensor can directly monitor whether the energy input by the vibrating table is effectively transmitted to the vibrating tool in real time. The switching frock sensor is used for evaluating from vibration frock to unmanned vehicles seeker body's connection rigidity and vibration energy transfer characteristic. The azimuth axis sensor can reflect torsion and bending response of the azimuth axis system in a vibration environment. The pitch axis sensor is used for monitoring vibration response difference of two ends of a pitch axis.

Inventors

LIU ZHAOQING
XU HUI
GONG XUEBING
QIAO PENG
CUI KAI
WEN JIANGHUA
LI ZHIYU
ZHANG XIAOLIANG

Assignees

西安应用光学研究所

Dates

Publication Date: 20260508
Application Date: 20260303

Claims (10)

1. A vibration response detection apparatus for an unmanned aerial vehicle seeker, comprising: A vibration tool (2) which is provided with a bottom plate (201) used for being connected with a vibration table and a vertical plate (202) arranged vertically to the bottom plate (201); The switching tool (3) is used for installing the unmanned aerial vehicle guide head (1) and is detachably connected to the vertical plate (202); a set of acceleration sensors, the layout positions of which include: at least three mounting point sensors (4) disposed near the connection points of the base plate (201) and the vibration table; at least one switching tool sensor (5) arranged on the switching tool (3); At least one azimuth axis sensor (6) arranged on an azimuth axis housing of the unmanned aerial vehicle guide head (1); And the at least two pitching axis sensors (7) are arranged on the pitching axis shell of the unmanned aerial vehicle guide head (1).
2. The vibration response detection apparatus according to claim 1, wherein the base plate (201) is connected to the vibration table by at least three screws, and the at least three mounting point sensors (4) are arranged in one-to-one correspondence with the screws.
3. The vibration response detection apparatus according to claim 1, wherein the set of acceleration sensors are all triaxial acceleration sensors.
4. The vibration response detection device according to claim 1, wherein the vertical plate (202) is provided with a mounting hole (203), the adapting tool (3) is connected with the vertical plate (202) through the mounting hole (203), and the adapting tool (3) comprises a vertical plate connecting part (301) for being assembled with the vertical plate (202) and a simulation cabin section (302) for being connected with the unmanned aerial vehicle guide head (1), wherein the simulation cabin section (302) has a plurality of different dimension specifications so as to be matched with the unmanned aerial vehicle guide head (1) with different external dimensions.
5. The vibration response testing device of claim 1, further comprising a random vibration data acquisition system, wherein the set of acceleration sensors are each electrically connected to the data acquisition system.
6. The vibration response detection device according to claim 1, wherein the at least two pitch axis sensors (7) are respectively arranged at pitch axis housing points corresponding to the pitch motor and the pitch angle measuring element.
7. A method of unmanned aerial vehicle seeker vibration response detection employing the vibration response detection apparatus of any one of claims 1-6, comprising the steps of: Step S1, installing an unmanned aerial vehicle guide head on the vibration response detection device through the switching tool and connecting a data acquisition system; S2, controlling the vibration table to sequentially apply unidirectional random excitation force in three directions X, Y, Z; s3, controlling a pilot head servo system of the unmanned aerial vehicle in each excitation direction to enable the pilot head servo system to be in a working state determined by a plurality of different pitch angle and azimuth angle combinations in sequence; and S4, synchronously acquiring and recording vibration response data of the group of acceleration sensors under each test working condition determined by the excitation direction, the pitch angle and the azimuth angle.
8. The vibration response detection method according to claim 7, wherein in step 3, the plurality of different pitch and azimuth combinations include at least four states: State 1, pitching 0 degree and azimuth 0 degree; 2, pitching to 20 degrees and azimuth to 0 degree; 3, pitching to 20 degrees and azimuth to 45 degrees; and 4, pitching to 20 degrees and azimuth to 45 degrees.
9. The vibration response detection method according to claim 8, characterized by further comprising, after step S4: and S5, calculating the root mean square value of vibration response of the azimuth axis and the pitching axis of the unmanned aerial vehicle seeker based on the vibration response data, and calculating the amplification factor of the root mean square value relative to the input energy of the vibration table.
10. The vibration response detection method according to claim 9, wherein the vibration response detection method is used for testing a plurality of unmanned aerial vehicle seekers of the same lot, and the individual differences among products are quantified by comparing the amplification factors.

Description

Vibration response detection device for unmanned aerial vehicle seeker and detection method thereof Technical Field The application relates to the technical field of unmanned aerial vehicle seeker testing devices, in particular to a vibration response detection device and a detection method for an unmanned aerial vehicle seeker. Background The adaptability of the vibration environment of the unmanned aerial vehicle seeker is an important evaluation standard and basis for the product to pass through the actual flight assessment. At present, random vibration tests are mainly carried out on unmanned aerial vehicle seekers on a vibration table according to standards in the industry so as to check the reliability of products. However, the conventional random vibration test method has significant drawbacks. The method only focuses on standardized control of the energy input by the vibrating table, and neglects the differences among the tested unmanned aerial vehicle guide head products. This results in the same lot of unmanned aircraft lead head products that follow the same process specifications during mass production, and at the time of delivery verification, situations will occasionally arise where individual products cannot pass random vibration testing (e.g., azimuth axis functional failure at Y-direction testing). As the traditional test method can not provide refined response data of key parts in the pilot head of the unmanned aerial vehicle in a vibration environment, once failure occurs, engineering personnel can not quickly and accurately locate the failure source, and whether the abnormal problem is caused by insufficient rigidity of a mechanical structure or improper bandwidth setting of a servo control system can not be judged. The dilemma seriously reduces the efficiency of fault detection and product optimization, and becomes an engineering technical problem that the environmental adaptability and delivery node guarantee of mass delivery of products cannot be effectively solved for a long time. Disclosure of Invention The application provides a vibration response detection device for an unmanned aerial vehicle seeker and a detection method thereof, which can solve the technical problems that whether an abnormal problem is caused by insufficient mechanical structural rigidity or unreasonable bandwidth setting of a servo control system cannot be judged under the condition that individual products (corresponding to batch products) cannot pass a random vibration test in the prior art, and the technical scheme is as follows: The application provides a vibration response detection device for an unmanned aerial vehicle guide head, which comprises a vibration tool, a transfer tool, a group of acceleration sensors, at least one transfer tool sensor and at least two pitching axis sensors, wherein the vibration tool is provided with a base plate used for being connected with a vibration table and a vertical plate which is perpendicular to the base plate, the transfer tool is used for installing the unmanned aerial vehicle guide head and is detachably connected with the vertical plate, the arrangement positions of the acceleration sensors comprise at least three mounting point acceleration sensors which are arranged near the connection point of the base plate and the vibration table, the transfer tool sensor is arranged on the transfer tool, the at least one azimuth axis sensor is arranged on an azimuth axis shell of the unmanned aerial vehicle guide head, and the at least two pitching axis sensors are arranged on a pitching axis shell of the unmanned aerial vehicle guide head. Optionally, the bottom plate is connected with the vibrating table through at least three screws, and the at least three mounting point sensors are arranged in one-to-one correspondence with the screws. Optionally, the set of acceleration sensors are all triaxial acceleration sensors. The automatic transfer tool comprises a vertical plate connecting part used for being assembled with the vertical plate, and a simulation cabin section used for being connected with the unmanned aerial vehicle guide head, wherein the simulation cabin section is provided with a plurality of different dimension specifications so as to adapt to the unmanned aerial vehicle guide head with different external dimensions. Optionally, the system further comprises a random vibration data acquisition system, and the group of acceleration sensors are electrically connected with the data acquisition system. Optionally, the at least two pitch axis sensors are respectively arranged at pitch axis housing points corresponding to the pitch motor and the pitch angle measuring element. In a second aspect, the application further provides a method for detecting the vibration response of the unmanned aerial vehicle seeker, which adopts the vibration response detection device, and comprises the following steps: Step S1, installing an unmanned aerial vehicle guide head on the v