Results 11 to 20 of about 987 (234)
Calculation method for natural frequency of rotors considering load distribution in stepped parts
Nihon Kikai Gakkai ronbunshu, 2022 To improve the product performance of turbomachinery and ensure vibration reliability, we propose a method for predicting natural frequencies that considers the decrease in the stiffness of the rotor stepped part.
Kazuyuki YAMAGUCHI +2 more
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Position Estimation of a Two-Phase Switched Reluctance Motor at Standstill
Machines, 2021 In this paper, a sensorless position detection method of a two-phase switched reluctance motor (SRM) at standstill is proposed based on the voltage pulse injection method.
Jiayi Fan, Insu Jung, Yongkeun Lee
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Comparison of Excitation Signals in Active Magnetic Bearing System Identification [PDF]
Modeling, Identification and Control, 2017 Active magnetic bearings (AMBs) offer frictionless suspension, vibration insulation, programmable stiffness, and damping, among other advantages, in levitated rotor applications.
Jouni Vuojolainen +3 more
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Energies, 2021 Safety is a critical feature for all passenger vehicles, making fail–safe operation of the traction drive system highly important. Increasing demands for traction drives that can operate in challenging environments over wide constant power speed ranges ...
Gilsu Choi
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Performance Improvement of Dual Stator Axial Flux Spoke Type Permanent Magnet Vernier Machine
IEEE Access, 2021 This paper presents performance improvement of dual stator axial-flux spoke type permanent magnet vernier machine (DSAFST-PMVM), which has the capability to generate high torque at a lower speed due to magnetic gearing effect.
Muhammad Bilal +5 more
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Energies, 2021 This paper presents a comparison between two design methodologies applied to permanent magnet synchronous machines for hybrid and electric vehicles (HEVs and EVs).
Koua Malick Cisse +5 more
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Energies, 2014 This paper investigated a 12-slot/11-pole flux switching permanent magnet (FSPM) machine used for electric vehicles (EVs). Five novel rotor teeth shapes are proposed and researched to reduce the cogging torque and torque ripple of the FSPM machine. These
Jing Zhao +4 more
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Nihon Kikai Gakkai ronbunshu, 2014 The bending stiffness at the stepped cross-section of a rotor decreases in accordance with the elasticity in the face of the cross-section. This study proposes a method to deal with this decrease in bending stiffness in one dimensional (1D) beam modeling.
Nobuaki NAGAE, Tomonobu GOTO
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Damping of Rotor Oscillation for Stepping Motors Using Fuzzy Reasoning
Journal of Japan Society for Fuzzy Theory and Systems, 1995 Stepping motors are used as the driver for positioning in control systems. It is well-known that the transient response of stepping motors is generally oscillatory in the case of open-loop control. The rotor oscillation must be suppressed in quick positioning applications.
T. Senjyu, S. Nakahama, K. Uezato
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Natural Frequency Analysis of a Jeffcott Rotor Having Stepped Shaft
European Journal of Engineering and Technology Research, 2021 The Rotating shafts are mechanical elements used to transmit power or motion. A shaft with a step or steps is widely used instead of a shaft with a fixed (non-variable) diameter when operating at high speeds. The aim of this research is to study the effect of the step amount and its location in the shaft on the natural frequencies of the Jeffcott rotor
Hamza Diken +2 more
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