Study On The Dynamics Modeling And Simulation Verification Of The Liquid Floated Gyroscope

In the research of navigation devices,Gyroscope is a kind of inertial device with precise and real-time positioning.This kind of navigation devices is different from star sensor and sun sensor which are constrained by real-time.Its principle is based on a sagittal velocity generated by the branch force,not by other external force.The test device can be tested by that the rotor can generate a certain angle along the polar axis.This kind of navigation device is widely used in space exploration,missile guidance and the real-time positioning of the ship’s aircraft carrier.About a variety of gyroscope.The higher precision of the gyroscopes are the electrostatic gyroscope and the laser gyroscope.Although the test accuracy of electrostatic gyroscope is higher then others,it has a higher manufacturing cost and short life shortcomings.If the MEMS technology and micro-nano technology can be applied in the micro mechanical MEMS gyroscope,it can reduce the cost of manufacturing based on the development of a high precision micro mechanical MEMS gyroscope.In the paper a nano processing surface structure of rotor was token for the micro gyroscope rotor about magnetic levitation,the inner cavity of the rotor gyroscope and the restrictions gyroscope rotor dynamics characterization methods that were in the system.In this paper,a magnetically suspended gyroscope is proposed so as to deal with the surface structure of the rotor.This paper introduced it through the establishment of coupling torque for the rotor can be used to measure the deflection angle and angular rate in the inertial coordinate system,stator coordinate system and rotor coordinate system through the establishment of Cardan angle conversion that the conversion of kinetic parameters between the different coordinate systems.These study is in order to verify the simulation and the COMSOL software after the laser interferometer,and the particle tracking trajectory of the rotor of the CCD camera is tested to verify the dynamic characterization methods in the limited space.The related results show:(1).The theoretical model of gyroscope dynamics is established in the limited space,including by the magnetic dipole driving torque of a marked point in the rotor,the damping torque about 2# industrial white oil,the magnetic drive and thermal fluid of thermal coupling torque.At the same time,according to the Euler equation of gyro dynamics,the dynamic equations of gyroscope in the space of the limited space are established in the inertial coordinate system,the stator coordinate system and the rotor coordinate system.And these were solved the rotor angular rate marker by coupling torque and angular displacement through the MATLAB software.These studies lay the theoretical foundation for the COMSOL simulation,Finally,the detection of capacitance method is verified,and a new kinetic characterization scheme is proposed.(2).The gyroscope rotor was in the COMSOL flow field simulation.It is verified about the dynamic characterization modeling of rotor.Thus,it provides the theoretical basis for the rotor of micro-nano processing structure.(3).The simulation of the gyroscope rotor was in the COMSOL magnetic field,the rotor was under the action of the driving magnetic field,the current is different.The simulation results show that rotor cavity of the highest flux.It is proved that the theory of gyro rotor is reasonable.(4).The gyroscope rotor was in COMSOL thermal field simulation,it is concluded that the rotor of magnetic field and flow field,the current is different.It is proved that the theory of gyro rotor is reasonable.