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Математическое моделирование, компьютерный и натурный эксперимент в естественных науках
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Технические науки
Errors’ distribution laws analysis of sensors for the rotary tables
1. SC «Design Bureau of Industrial Automatics» 2. Branch of the Federal State Unitary Enterprise “Academician Pilyugin Scientific-production Center of Automatics and Instrument-making” – Production Association “Korpus” 3. 4. Yuri Gagarin State Technical University of Saratov
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Abstract: The paper investigates the estimation of angular velocity errors occurred in rotary tables based on angle sensors, and angular velocity of the tangential as well as centripetal accelerations. Expres-sions for combined estimator of the angular velocity using readings of all sensors are found. Incon-sistency of error distribution for of all considered sensors used in the rotary tables to normal distri-bution law is revealed. Therefore, it is impossible obtain the optimal estimates of angular velocity using least square technique; as a result, the maximum likelihood estimation procedure is proposed. Keywords: Angular measurements, optical angle sensor, angular velocity sensor, linear accelerometer, error, poly-Gaussian approximation |
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