نتایج جستجو برای: rate gyro

تعداد نتایج: 961439  

2017
Yongjian Zhang Bin Zhou Mingliang Song Bo Hou Haifeng Xing Rong Zhang

Gyro north finders have been widely used in maneuvering weapon orientation, oil drilling and other areas. This paper proposes a novel Micro-Electro-Mechanical System (MEMS) gyroscope north finder based on the rotation modulation (RM) technique. Two rotation modulation modes (static and dynamic modulation) are applied. Compared to the traditional gyro north finders, only one single MEMS gyroscop...

2008
Chingiz Hajiyev

Operative methods of testing the covariance matrix of the innovation sequence of the Kalman filter are proposed. The quadratic form of the random Wishart matrix is used in this process as monitoring statistic, and the testing problem is reduced to the classical problem of minimization of a quadratic form on the unit sphere. As a result, two algorithms for testing the covariance matrix of the in...

Journal: :Current Biology 2009
Mark A. Frye

2. Sinervo, B. (1999). Mechanistic analysis of natural selection and a refinement of Lack’s and Williams’ principles. Am. Nat. 154(suppl.), S26–S42. 3. Bennett, P.M., and Owens, I.P.F. (2002). Evolutionary Ecology of Birds: Life Histories, Mating Systems and Extinction (Oxford: Oxford University Press). 4. Creighton, J.C., Heflin, N.D., and Belk, M.C. (2009). Cost of reproduction, resource qual...

Journal: :IEEE Transactions on Control Systems and Technology 2021

This brief presents a nonlinear observer that performs range estimation as well gyro-bias by using velocity, angular rate, and bearing angle measurements from landmarks at unknown locations. The is proved to have semiglobal asymptotic stability, its performance verified in simulations on experimental data. demonstrated an unmanned aerial vehicle (UAV) with sensor setup consisting of camera, ine...

Journal: :Journal of the Japan Society for Aeronautical and Space Sciences 1988

2016
Xin Huo Sizhao Feng Kang-Zhi Liu Libin Wang Weishan Chen

GyroWheel is an innovative device that combines the actuating capabilities of a control moment gyro with the rate sensing capabilities of a tuned rotor gyro by using a spinning flex-gimbal system. However, in the process of the ground test, the existence of aerodynamic disturbance is inevitable, which hinders the improvement of the specification performance and control accuracy. A vacuum tank t...

2014
S. Neil Rasband Ross L. Spencer

Modes and quasi-modes for mϭ1,2 are studied in a gyro-kinetic model for a pure-electron plasma. Only z-independent perturbations are considered. Numerical methods are used to solve the relevant differential equations for smooth, analytic density profiles. Different temperatures and representative profiles are considered and comparison is made with the familiar cold fluid model from which the re...

1998
G. Bracco P. Buratti C. Cianfarani S. Cirant F. Crisanti D. Frigione G. Granucci M. Marinucci C. Sozzi O. Tudisco V. Zanza M. Zerbini B. Angelini M. L. Apicella G. Apruzzese E. Barbato L. Bertalot A. Bertocchi M. Borra A. Bruschi D. Pacella L. Panaccione M. Panella V. Pericoli Ridolfini L. Pieroni S. Podda G. B. Righetti F. Romanelli F. Santini M. Sassi S. E. Segre A. Simonetto S. Sternini

Some FTU plasma scenarios are characterised either by high electron temperature, produced by ECRH, or high densities, by pellet injection. This paper discusses the energy transport characteristics of these configurations and compares them with the predictions of mixed Bohm/Gyro-Bohm model that has been recently proposed. The Gyro-Bohm term of the model overestimate the measured energy transport...

Journal: :Plasma Physics and Controlled Fusion 2022

Abstract In this paper, we present an analysis of the conservation currents in a full-F electromagnetic gyro-kinetic model long-wavelength limit. This equation corresponds to what is usually called ‘vorticity equation’, which not strictly correct as it cannot be formulated curl velocity equation. will therefore use term ‘current equation’ instead. Our results are relevant reduced plasma descrip...

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