Anti-high-overload vibration reduction structure for reutilization of micro-inertial measurement unit

Abstract

The invention discloses an anti-high-overload vibration reduction structure for reutilization of a micro-inertial measurement unit. The structure comprises an outer shell, an inner shell, a buffer washer, a support frame assembly and a plurality of vibration reduction units, and is characterized in that the outer shell is placed on a working platform, the inner shell is arranged in the outer shell, a first cavity is formed between the outer shell and the inner shell, the buffer washer is arranged at the bottom of the first cavity for buffering, the support frame assembly is arranged in the first cavity, located on the top face of the buffer washer and used for fixing and placing the inner shell, and the plurality of vibration reduction units are arranged in the inner shell, distributed inthe circumferential direction of the top face and the circumferential direction of the bottom face of the micro-inertial measurement unit to be measured correspondingly and attached to the inner shell. According to the structure, the first cavity between the outer shell and the inner shell is encapsulated by a pouring sealant, so that the high overload resistance of the micro-inertial measurementunit is improved.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction, and in particular relates to an anti-high overload vibration reduction structure for repeated use of micro inertial measurement units. Background technique [0002] A micro-inertial measurement unit based on a micro-electromechanical system (Micro Electro Mechanical System, MEMS) is composed of three mutually orthogonal accelerometers, gyroscopes and other modules. The carrier position information can be obtained after processing the data obtained by the gyroscope and the accelerometer. Due to the advantages of small size and light weight, the micro inertial measurement unit has great application and development prospects in weapon shell guidance, vehicle guidance, unmanned aerial vehicle guidance, integrated navigation system and small reconnaissance equipment. However, vibrations often occur in the working environment of the MIMU, and these vibrations will degrade the performance o...

AI Technical Summary

Problems solved by technology

[0007] At present, the existing vibration-damping structures for micro-inertial measurement units mainly have the following problems: (1) Many vibration-damping structures can only achieve primary or secondary protection, and the ability to resist high overload is insufficient, resulting in micro-inertial measurement units being used in practical It is easy to be damaged in working conditions; (2) Some vibration-damping structures are designed only considering the realization of the vibration-damping function, without taking into account the materials used in the vibration-damping structure and the overall quality, and the overall stability cannot be guaranteed; (3) At present, the existing damping structure is basically directly potted and sealed, which is not convenient for disassembling the micro-inertial measurement unit. When the micro-inertial measurement unit fails, it cannot be repaired. It can only be used once and cannot be reused. The development cost High, resulting in waste of resources

Images