DocumentCode :
1184832
Title :
Highly Accurate Inclinometer Robust to Ultralow-Frequency Acceleration Disturbances and Applications to Autotracking Antenna Systems for Vessels
Author :
Yoshida, Tomihiko ; Ohata, Kohei ; Ueba, Masazumi
Author_Institution :
NTT Network Innovation Labs., Nippon Telegraph & Telephone Corp., Yokosuka, Japan
Volume :
58
Issue :
8
fYear :
2009
Firstpage :
2525
Lastpage :
2534
Abstract :
This paper describes a new inclinometer that compensates for ultralow-frequency acceleration disturbances. This inclinometer consists of a low-cost accelerometer, pendulum, and rotary encoder. The key feature of this inclinometer is the estimation method used to calculate the pendulum´s inertial angle. We propose two algorithms to estimate the pendulum´s angle. Algorithm I uses time-averaged accelerations and some assumptions. Algorithm II applies the pendulum´s equation of motion. The results of simulations and experiments confirm that both algorithms can achieve highly accurate level/angle estimations under acceleration disturbance conditions. We apply this inclinometer to an autotracking antenna system for vessels. Time simulations verify its effectiveness.
Keywords :
accelerometers; antennas; pendulums; radio tracking; ships; accelerometer; autotracking antenna systems; inclinometer; pendulum inertial angle; pendulum motion equation; rotary encoder; time-averaged accelerations; ultralow-frequency acceleration disturbances; vessel autotracking systems; Attitude control; gyroscopes; inertial navigation; marine vehicle communication; motion measurement; satellite tracking;
fLanguage :
English
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9456
Type :
jour
DOI :
10.1109/TIM.2009.2014622
Filename :
4797882
Link To Document :
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