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CN-224202463-U - Test and verification platform for airborne inertial navigation system based on ship motion simulation

CN224202463UCN 224202463 UCN224202463 UCN 224202463UCN-224202463-U

Abstract

The utility model discloses a test and verification platform of an airborne inertial navigation system based on ship motion simulation, which relates to the field of ship motion simulation experiments and comprises a six-axis sea wave simulator, a simulation cabin, wherein the simulation cabin is arranged on the six-axis sea wave simulator, an airborne inertial navigation module is elastically arranged in the simulation cabin, a fixed cylinder is fixed on the inner side of the simulation cabin, an electric push rod is fixed in the fixed cylinder, one end of the electric push rod is connected with a sliding block, a spring is fixed on one side of the sliding block, an inserting block is fixed at one end of the spring, when the electric push rod is retracted, the smaller the compression of the spring is, the larger the vibration amplitude of the airborne inertial navigation module in the simulation cabin is, the vibration amplitude of the internal airborne inertial navigation module can be controlled through the vibration amplitude of the compression spring, and the simulation cabin is used for simulating continuous wave fluctuation, motion frequency, vibration amplitude and other parameters, and the like, so that the simulation authenticity is improved.

Inventors

  • SUN QINGYUE
  • WANG DONGMEI

Assignees

  • 图南海洋科技(青岛)有限公司

Dates

Publication Date
20260505
Application Date
20250530

Claims (7)

  1. 1. The test and verification platform of the airborne inertial navigation system based on ship motion simulation is characterized by comprising the following components: six-axis sea wave simulator; The simulation cabin (6) is arranged on the six-axis sea wave simulator; Wherein an airborne inertial navigation module (10) is elastically installed in the simulation cabin (6); A fixed cylinder (12) is fixed on the inner side of the simulation cabin (6), an electric push rod (14) is fixed in the fixed cylinder (12), one end of the electric push rod (14) is connected with a sliding block (15), a spring (16) is fixed on one side of the sliding block (15), and an inserting block (17) is fixed on one end of the spring (16); The onboard inertial navigation module (10) is provided with a slot for inserting the plug-in block (17); the fixed cylinder (12) is provided with a plurality of fixed cylinders.
  2. 2. The test and verification platform of the on-board inertial navigation system based on ship motion simulation, which is characterized in that the six-axis sea wave simulator comprises a base (1) and a fixed seat (3), and six electric cylinders (2) are movably arranged between the base (1) and the fixed seat (3); The fixed seat (3) is provided with a fixed groove (4), an electromagnet (5) is arranged on the inner ring of the fixed groove (4), and the simulation cabin (6) is embedded with a magnetic attraction block (7) corresponding to the magnetic attraction of the electromagnet (5).
  3. 3. The test and verification platform for the ship motion simulation-based airborne inertial navigation system, as set forth in claim 1, is characterized in that a fan (13) is fixed in the simulation cabin (6), and an air outlet of the fan (13) faces to the airborne inertial navigation module (10).
  4. 4. The test and verification platform for the ship motion simulation-based airborne inertial navigation system, as set forth in claim 1, is characterized in that an electric heating pipe (8) is arranged below the airborne inertial navigation module (10), and the electric heating pipe (8) is fixed inside the simulation cabin (6).
  5. 5. The test and verification platform for the ship motion simulation-based onboard inertial navigation system, as claimed in claim 1, is characterized in that a top cover (9) is installed on the top end of the simulation cabin (6) in a threaded manner.
  6. 6. The test and verification platform for the ship motion simulation-based airborne inertial navigation system is characterized in that an exhaust port (11) is formed in the outer side of the simulation cabin (6), the exhaust port (11) is communicated with the interior of the simulation cabin (6), and an electromagnetic valve is arranged in the exhaust port (11).
  7. 7. The test and verification platform for the ship motion simulation-based airborne inertial navigation system is characterized by further comprising a data acquisition and processing module and a control module, wherein the data acquisition and processing module is used for acquiring navigation data output by the airborne inertial navigation system and comparing and analyzing the navigation data with input parameters of the six-axis sea wave simulator, and the control module is used for controlling the motion mode and parameter setting of the six-axis sea wave simulator.

Description

Test and verification platform for airborne inertial navigation system based on ship motion simulation Technical Field The utility model relates to the field of ship motion simulation experiments, in particular to an airborne inertial navigation system test verification platform based on ship motion simulation. Background Ships are subjected to a number of factors in the marine environment, including wind, waves, currents, etc., which cause the ship to produce complex six degrees of freedom motions (i.e., heave, roll, pitch, yaw, heave and roll). In order to study the motion characteristics of ships and the performance of related equipment in the ship motion environment, ship motion simulation technology has been developed. Traditional marine motion studies have relied primarily on physical tests, such as the Planar Motion Mechanism (PMM) test. However, the method has the defects of high equipment cost, large repeated workload, high sensitivity requirement on the sensor, incapability of providing flow field information around the ship body and the like. Therefore, it is necessary to provide an on-board inertial navigation system test and verification platform based on ship motion simulation to solve the above problems. Disclosure of utility model The utility model aims to provide an onboard inertial navigation system test and verification platform based on ship motion simulation, so as to solve the problem that traditional ship motion research mainly depends on physical tests, such as a Planar Motion Mechanism (PMM) test. However, this method has the disadvantages of high equipment cost, large repeated workload, high sensitivity requirement on the sensor, inability to provide flow field information around the hull, and the like. In order to achieve the purpose, the utility model provides the following technical scheme that the test and verification platform of the airborne inertial navigation system based on ship motion simulation comprises the following components: six-axis sea wave simulator; The simulation cabin is arranged on the six-axis sea wave simulator; The simulation cabin is internally and elastically provided with an airborne inertial navigation module; The simulation cabin is characterized in that a fixed cylinder is fixed on the inner side of the simulation cabin, an electric push rod is fixed in the fixed cylinder, one end of the electric push rod is connected with a sliding block, a spring is fixed on one side of the sliding block, and an inserting block is fixed on one end of the spring; The onboard inertial navigation module is provided with a slot for inserting the plug-in block; The fixed cylinder is provided with a plurality of. Preferably, the six-axis sea wave simulator comprises a base and a fixed seat, and six electric cylinders are movably arranged between the base and the fixed seat; the fixed seat is provided with a fixed groove, an electromagnet is arranged on the inner ring of the fixed groove, and the simulation cabin is embedded with a magnetic attraction block corresponding to the electromagnetic ferromagnetic attraction. Preferably, a fan is fixed in the simulation cabin, and an air outlet of the fan faces to the airborne inertial navigation module. Preferably, an electric heating pipe is arranged below the airborne inertial navigation module, and the electric heating pipe is fixed in the simulation cabin. Preferably, a top cover is arranged on the top end of the simulation cabin in a threaded manner. Preferably, an exhaust port is formed in the outer side of the simulation cabin, the exhaust port is communicated with the inside of the simulation cabin, and an electromagnetic valve is arranged in the exhaust port. Preferably, the system also comprises a data acquisition and processing module and a control module, wherein the data acquisition and processing module is used for acquiring navigation data output by the airborne inertial navigation system and comparing and analyzing the navigation data with input parameters of the six-axis sea wave simulator, and the control module is used for controlling the motion mode and parameter setting of the six-axis sea wave simulator. The utility model has the technical effects and advantages that: 1. Through the cooperation of electric putter, slider, spring and inserted block, can realize the fixed and release operation to airborne inertial navigation module, also can simulate certain vibration and impact environment simultaneously, when electric putter stretches out the length longer, the spring compression is bigger, and the extrusion fixed strength to airborne inertial navigation module is stronger, and when external motion, airborne inertial navigation module rocks the range in the simulation cabin less. 2. When the electric push rod is retracted and the spring is compressed, the amplitude of the vibration of the airborne inertial navigation module in the simulation cabin is larger when the external motion is performed, and the am