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Study on Drift Compensation of Quartz Accelerometer in SINS

Author: JieQiZhan
Tutor: PanYingJun
School: Chongqing University
Course: Instrument Science and Technology
Keywords: SINS Quartz accelerometer Wavelet Neural Network Serial communication Manchester code
CLC: TH824.4
Type: Master's thesis
Year: 2009
Downloads: 221
Quote: 3
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Abstract


Strapdown inertial navigation system with fully independent , uninterrupted , real-time output carrier posture , position , speed and other navigation information advantage , especially in military and civilian areas of military field national universal attention , and are widely used in various types of missiles , satellite launch and other occasions , so the level of accuracy is an important indicator of a country's military strength . The factors affecting the accuracy of SINS many , such as inertial measurement accuracy of the device , the attitude solution algorithm , signal processing speed and accuracy, etc. . Under the same conditions the choice of algorithms and hardware implementation speed , of inertial devices gyro and accelerometer error compensation is particularly important, many other factors affect the the inertial device output accuracy , the temperature is one of the most significant is the most common factors . The main content of this paper is to study the compensation of of inertia devices quartz accelerometer temperature drift error , the method is also applicable to the temperature of inertial devices gyro drift error compensation . Of this research work is mainly around the following parts : ( 1) research quartz acceleration meter temperature - sensitive characteristics caused by temperature changes drift error , and then raised the temperature drift error compensation model fitting method and compensation realization of ideas . ( 2) quartz the accelerometer temperature drift compensation software and hardware . First introduced a whole strapdown inertial navigation system signal acquisition and processing programs, including the three main channels and a data processing center , data acquisition channels of the accelerometer , gyroscope data acquisition channel temperature data acquisition channels and digital signal processor . Highlight a channel which quartz accelerometer temperature drift compensation . ( 3) the use of FPGA design code Manchester encoding , to solve the problem of the stability of the signal during transmission .

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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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