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Study on Application of Accelerometers in Platform Stabilized System

Author: LiuXiang
Tutor: GeWenQi
School: Graduate Schoo,Chinese Academy of Sciences
Course: Mechanical and Electronic Engineering
Keywords: Linear accelerometer Angular acceleration Angular velocity Stable platform
CLC: TH824.4
Type: Master's thesis
Year: 2004
Downloads: 431
Quote: 2
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Abstract


Motivation Block photoelectric stable platform has been widely used. In order to effectively overcome the impact of carrier movement and other environmental factors on the photoelectric stabilized platform, generally use the measurement of the angular velocity of the gyroscope photoelectric stabilized platform with respect to inertial space, so as to constitute a the gyro platform stability system. Synthetic line acceleration angular velocity, angular acceleration based on the theory of the accelerometer platform stabilization system, gyroscopic accelerometer alternative to a non-gyro platform stabilization system laid the foundation. First line acceleration synthesis angular velocity, angular acceleration of the general theory of theory to prove the correctness of this approach, laid the theoretical foundation for the further study; On this basis, this paper analyzes the general method of angular motion synthesis difficulties in platform stabilization system, on this basis, we propose an improved method; characteristic of this method is the installation of variable spatial structure of the planar structure, so that the theory of angular motion synthesis applications possible in engineering practice. The line accelerometers development, introduced and discussed several suitable platform stabilization system applications accelerometer; synthetic formula according to the angular velocity, angular acceleration, platform stabilization system of linear acceleration measurement accuracy requirements, which were looking the accelerometer suitable laboratory theory validation and engineering applications. Meter ADXL202 dual-axis silicon capacitive acceleration described based on a detailed account of the design process the ADXL202 constitute angular motion measuring device; experimental test turntable angular motion measuring device, verify that the angular motion of the device measured ability to experimentally prove the correctness of the synthetic theory of angular motion and improved method. Finally, in theory analysis of the angular acceleration ring isolation; platform stabilization system simulation model with nonlinear friction torque, verify that the angular acceleration of the ring has the ability to overcome the friction torque theory; turntable in the experimental by adding the angular acceleration measuring means constituted by the linear accelerometer and tachometer body into angular acceleration of the ring, the angular velocity ring bicyclic structure, verify the angular acceleration ring to the motor commutation error elimination.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Mechanical quantity measuring instruments > Speed ??measuring instruments > Accelerometer
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