Automatic humidity centring system with fault diagnosis function for three-floating inertia instrument

Abstract

The invention discloses an automatic humidity centring system with a fault diagnosis function for a three-floating inertia instrument, and belongs to the technical field of inertia instruments. The system comprises a three-floating instrument gyroscope pendulum, a controller, a matrix switch, a magnetic suspension pre-posed demodulation circuit, a program-controlled resistance circuit and an acquisition module. According to the system, the overall process is controlled through the matrix switch; output data are automatically acquired by adopting a PXI (Peripheral Component Interconnection Extensions for Instrumentation) data acquisition module; an allocation algorithm is designed based on experience; program-controlled resistors perform iterative allocation for completing the humidity centring debugging of the three-floating inertia instrument, determining the program-controlled resistors of a Wheatstone bridge of an IO (Input / Output) circuit, and realizing the overlapping of a mechanical zero position and an electrical zero position of a float. Through the system, humidity centring automation and intelligent allocation are realized; the allocation precision is high; the fault diagnosis function is realized, and the working condition of a mechanical body is judged in time, so that the system has great significance to improve assembling efficiency and discover an assembling fault of a precise instrument in time.

Description

technical field [0001] The invention relates to a wet centering system for a three-float inertial instrument, in particular to an automatic wet centering system for a three-float inertial instrument with fault diagnosis, belonging to the technical field of inertial instruments. Background technique [0002] When the three-float inertial instrument is working normally, the position of the float is accurately centered through the magnetic levitation control system. Due to the impossibility of ideal symmetry for the parameters of the magnetic levitation components (dimensional accuracy, number of coil turns, magnetic properties, etc.) relative to each other, there is a deviation between the electrical zero position of the magnetic levitation and the mechanical zero position. Therefore, it is necessary to adjust the magnetic levitation electrical zero position to eliminate the deviation between the magnetic levitation electrical zero position and the mechanical zero position. ...

AI Technical Summary

Problems solved by technology

The current three-floating instrument production line only collects limit position inductance, without a systematic analysis and evaluation system, and generates effective diagnostic results to guide assembly production

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