Development Of The Measurement System Of The Satellite Vibration Response

With the rapid development of space technology,the structure of spacecraft is becoming l arger,m ore c omplicated,l ighter,and m ore versatile.M ore and m ore precision i nstruments a nd s ensitive d evices ar e b eing used i n aerospace r esearch missions.S pacecraft components,s paceborne pr ecision i nstruments a nd ot her sensitive devices h ave strict requirements o n the me chanical e nvironment d uring operation.Therefore,t he s uppression of t he vibration of t he w hole s tar a nd i ts components becomes more important.The implementation of vibration suppression measures cannot be separated from the vibration of satellite components.Real-time,accurate monitoring and measurement.This paper uses embedded computer to design a modular and lightweight mini-satellite-borne vibration measurement system,which can collect,analyze,transmit and store the active satellite vibration information.It has important engineering application value.Firstly,according t o t he w orking c ondition m ode of t he s atellite,t his pa per analyzes the technical index requirements of the measurement system,combines the performance requirements of the vibration response measurement unit and the design principles of different modules to propose the design idea of the measurement system,and initially establishes the overall scheme of the system;It lays the foundation for the next step of system hardware and software standardization design.Then,b ased o n t he o verall d esign o f t he s ystem,t he d etailed d esign o f t he hardware and software of the satellite vibration response measurement system was completed.In t erms of ha rdware,t he complete de sign of t he vi bration r esponse measurement unit control timing and circuit,data processing and control module,signal acquisition module,and power supply and distribution module was completed,and electromagnetic co mpatibility issues were considered to enhance the s ystem’s anti-jamming capability;Based on the four operating modes of the on-board vibration response m easurement system,t he vi sual de sign o f t he C AN bus communication module p rogram,FLASH m anagement m odule pr ogram a nd ot her f unctional software w as c ompleted,t hus ensuring t he e fficient i mplementation of h ardware functions and achieving intelligent management inside the device.Finally,th e v ibration r esponse me asurement s ystem w as t ested to v erify th e correctness an d co mpleteness of t he collected vi bration d ata.The power s upply module,analog acquisition m odule,C PU control m odule,and t he whole m achine were debugged respectively,and the performance of the s ystem was verified.The result proves that the measurement s ystem is stable and r eliable,and satisfies the functional r equirements a nd t echnical s pecifications o f t he vi bration r esponse measurement system on the satellite.