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Dynamic Design of Inertial Platform Stracture and Accurate Rotation System

Author: ZengWen
Tutor: HuangMaoLin
School: Chongqing University
Course: Mechanical Design and Theory
Keywords: System Design Dynamic Design Finite Element Isolation System Accuracy analysis
CLC: TH122
Type: Master's thesis
Year: 2002
Downloads: 231
Quote: 2
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Abstract


The onboard laser gyro inertial orientation system requires a high-precision, high stability, high reliability, light weight and other features important performance indicators of the system, so the system dynamic performance. The traditional static design is difficult to solve the problem of dynamic characteristics, only through the study of the natural frequency of the structure outside the role and power of the system response among dynamic design, in order to solve this problem effectively. In this paper, in-depth study of the mechanism of the system, determine the accuracy to the structure of the dynamic characteristics of the kinetic parameters of the design and system design and system design for the core system design, comprehensive application of advanced technology and technical means comprehensive innovative design. Discussed some issues of principle for the design of the various subsystems, and demonstrated a variety of possible system solutions, and proposed a practical optimal system design. And, based on this set of programs, the detailed structural design of the various parts of the system. This article studies the laser gyroscope carrier - the dynamic nature of the internal and external support structure, application structure dynamic design theory and optimal design theory compare various design options, the use of the finite element method to analyze the strength and stiffness of the internal and external support structure, the use of The dynamic finite element analysis software ANSYS calculated natural frequencies and modes of the internal and external support structure, and validated by experimental modal analysis method. Use structure optimization design theory to improve the dynamic characteristics of the internal and external support structure. As well as in-depth study of the vibration isolation system, the vibration isolation system design, selection and installation of the isolator, the natural frequency of the vibration isolation system obtained by theoretical calculations and experimental two methods, and effectively reduce the natural frequency of the vibration isolation system (reduced from 63.107Hz to 35.3Hz), so that the vibration isolation system effective vibration isolation. And preliminary study of some of the uncertainties of the impact of system accuracy, a number of measures to reduce and eliminate these effects, focusing on the of shafting vibration of the elastic deformation of the system accuracy. Through this system, and in-depth research, some results were achieved to solve key technical problems in the car laser gyro inertial orientation system provides a viable design method for the design of the same type of products.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical design, calculation and mapping > Mechanical Design
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