Since the circle error probability (CEP) of the laser gyroscope inertial navigation system (INS) based on a certain weapon control system is a little larger in ground dynamic navigation test, an effective vibration-damping system has been designed. Data processing for the vibration experiments’ results and normal mode analysis show that the resonance frequency of the original mounting board is near the mechanical dither frequency of the laser gyroscope, which can lead to a larger mounting board response at the mechanical dither frequency. This is the main reason for the larger navigation error. A stiffer mounting board was designed, and another mounting bracket with better dynamic characteristics was developed. Ground vibration experiments and navigation simulation for laser gyroscope show that the new vibration isolation system can feed the desired requirements.
The circular probable error is a little larger in the ground dynamic navigation test of the laser gyroscope Strap down inertial navigation system, so a better vibration damping system needs to be designed for SINS with laser gyro. Through analysis for the model of the vibration and the old vibration damping system, a new system of the double free degree be bring forwarded to reduce the response of random vibration on inertial navigation system. During the design, considering the installing plate is part of the vibration damping system and reckoning the inner space of the tactical missile carefully , using the finite element dynamic optimization method, a satisfactory installing plate and a damper with better dynamic characteristics is designed, then through ground vibration experiment and the designed of repetition parameter optimization, now the new vibration damping system can work effectively and the effect of vibration absorbing has achieved the requirement, it can be applied to the aircraft.
Dual mechanical environment simulators are usually used to supply recoil force and centrifugal force for simulation of liquid reserve batteries during artillery projection. When the vehicle with fuze batteries impacts the wooden block rotating with high speed, whether the transient impact parameters and the time required for the vehicle reaching the rated revolution are in accordance with the test conditions of fuze batteries is one of the key technologies. Finite element simulations are implemented for the transient vehicle impact process, the variation of vehicle acceleration under different projection velocities, the variations of vehicle acceleration and impulse duration with different wooden block thicknesses, and the time required to achieve stable rotational speed are discussed in this paper, which can be a reference for the simulator design.
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