Dynamic Design Of The Laser Gyroscope Bracket

The laser gyro navigation system has strict requirement on structural dynamic performance while in working for its sensitivity to vibration. By researching and analyzing the system, it is known that the dynamic performance of the gyro bracket and isolation device is the key index of the dynamic performance in the system. This paper analyzed the key technical requirements on dynamic design of the system, and further put forward a set of viable proposal. The main studies are as follows:1. From the angle about structural dynamics, the paper analyzed dynamic design and static design from their theoretical foundation in addition to functional relationship between force and deformation, and pointed out the defect that the static design may result in and the necessity of the dynamic design;2. Drew up a dynamic design process for the gyro bracket and isolation device;3. Studied the isolation requirement of the system vibration, analyzed the choosing of the damper and laying-out;4. Studied experimentally and theoretically the dynamic performance of the selected damper, and Put forward a kind of parameters identification method based on complex stiffness model for identifying parameters of the damper.5. The paper make use of the finite element method to establish the mathematics model of the bracket and the isolation device, proceed the dynamic analysis to the model, and, on base of calculation result, optimized and re-analyzed the model.As vital integral part of the laser gyro navigation system design, the study in the paper solved technical problems such as outcome distortion or even system failure resulted from bad dynamic performance of bracket and isolation device structure. Furthermore, the dynamic design method proposed in the paper can taken as reference to dynamic design of precise electronic apparatus.