Results 261 to 270 of about 844,475 (305)
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Piezoelectric inertial stepping motor with spherical rotor
Review of Scientific Instruments, 1992A piezoelectric inertial stepping motor for multiple rotations of small optical or mechanical components has been developed. The spherical rotor can be rotated about two or three orthogonal axes. Angular step resolution of 1 arcsec is achieved and the maximum speed lies in the range of degrees per second. The design is compact and eliminates mechanical
L. Howald, H. Rudin, H.-J. Güntherodt
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Mass Imbalance Measurement of Incomplete Spherical Superconducting Rotor With Air Suspension
IEEE Transactions on Instrumentation and Measurement, 2012For an incomplete spherical superconducting rotor, which has a flat face at the top and a hole at the bottom, respectively, and with highly rotational speed, the mass imbalance is very necessary. However, because of the special structure, the air suspension of the rotor fails as soon as the flat or the hole contacts with the air hole of an air ...
Chunyan Cui, Xinning Hu
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A More Efficient Driving Method for a Spherical Superconducting Rotor
IEEE Transactions on Applied Superconductivity, 2015A spherical superconducting rotor is spinning at low temperature of 4.2 K. The electromagnetic field generated by the stator coils engenders driving torque on the superconducting rotor through the window on the window side wall. The driving torque at different rotation position was calculated by using finite element analysis (FEA).
Xinning Hu, Chunyan Cui, Jianhua Liu
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Development of angular velocity vector measurement of a spherical rotor based on color sensors
Transactions of the Institute of Measurement and Control, 2018Chen Pan, Gaofei Zhang
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Nonlinear compensation of active electrostatic bearings supporting a spherical rotor
Sensors and Actuators A: Physical, 2005This paper proposes a nonlinear compensation scheme to deal with the nonlinear, uncertain dynamics of electrostatic bearing systems. A feedback linearization technique that utilizes the approximate nonlinear model of the electric field distribution is employed to compensate for the unstable position stiffness inherent in electrostatic suspension for ...
Fengtian Han +3 more
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Particle Filter-based Spherical Rotor Attitude Visual Estimation
International Conference on Electrical Machines and Systems, 2023Rotor attitude estimation (RAE) is the prerequisite for the close-loop control of permanent magnet spherical motors (PMSpM). This paper presents an RAE method of PMSpMs using monocular vision. The FDSST algorithm is improved to track three visual objects
Sili Zhou +5 more
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A permanent magnet spherical rotor design and three dimensional static magnetic analysis
Sensors and Actuators A: Physical, 2007Yusuf Oner
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IEEE transactions on industrial electronics (1982. Print), 2023
This article proposes a rotor attitude estimation (RAE) method for spherical motors using the multiobject Kalman kernel correlation filter (MKKCF) algorithm in monocular vision. A permanent magnet spherical motor (PMSpM) is adopted as the research object,
Sili Zhou +5 more
semanticscholar +1 more source
This article proposes a rotor attitude estimation (RAE) method for spherical motors using the multiobject Kalman kernel correlation filter (MKKCF) algorithm in monocular vision. A permanent magnet spherical motor (PMSpM) is adopted as the research object,
Sili Zhou +5 more
semanticscholar +1 more source
The rotor-router shape is spherical
The Mathematical Intelligencer, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Levine, Lionel, Peres, Yuval
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