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Singularity Analysis and Structural Optimization of Permanent Magnet Spherical Motor
2023 26th International Conference on Electrical Machines and Systems (ICEMS), 2023Ming Yang +4 more
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Identification of Rotor Position of Permanent Magnet Spherical Motor Based on Compressed Sensing
IEEE Transactions on Industrial Informatics, 2023menglai mi, Yanbo Che, Hongfeng Li
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Multi-degree-of-freedom spherical permanent magnet motors
Proceedings 2001 ICRA. IEEE International Conference on Robotics and Automation (Cat. No.01CH37164), 2002The paper describes the analysis, design and control of two new versions of spherical permanent magnet motor, which are capable of two and three degrees-of-freedom of controlled motion, and have a high specific torque capability. Their magnetic field distribution is established using an analytical technique formulated in spherical coordinates.
Jiabin Wang +3 more
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Torque characteristic investigation of a permanent magnet spherical motor
2007 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2007Compared with transmission systems assembled by some single degrees-of-freedom (DOF) electrical motors, three DOF motion can be achieved in a single permanent magnet (PM) spherical motor, which is a new research direction in the field of electrical motors. The structure and operation principle of a novel PM spherical motor are introduced.
Peng Song 0008 +2 more
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Thermal Analysis of the Permanent-Magnet Spherical Motor
IEEE Transactions on Energy Conversion, 2015There are many kinds of permanent-magnet (PM) motors, which are widely used in modern industry, but the problem of temperature rise is likely to affect the operation performance and even the life of the motor. The semiclosed structure of the PM spherical motor (PMSM) tends to increase the temperature when it works, so the thermal analysis of the PMSM ...
Hongfeng Li, Yanbo Shen
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Magnetic Field Analysis of Rotor Eccentricity of Spherical Permanent Magnet Motor
2020 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD), 2020Rotor eccentricity, as a common motor fault, is one of the causes of motor noise and torque ripple. It is mainly caused by the misalignment of the axis of the stator and rotor of the motor due to the improper installation of the inner diameter of the stator of the motor. In this paper, an 8-pole 12-slot multi-DOF spherical permanent magnet motor (MSPMM)
Zheng Li +3 more
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IEEE Transactions on Instrumentation and Measurement
menglai mi, Yanbo Che, Hongfeng Li
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menglai mi, Yanbo Che, Hongfeng Li
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Design Considerations of a Permanent Magnetic Spherical Motor Using Spherical Harmonics
IEEE Transactions on Magnetics, 2014A design consideration of a permanent magnet spherical motor (PMSM) is presented based on spherical harmonic (SH) analysis. By analogy with fractional-slot rotary machines, the PMSM with eight electromagnets/six permanent magnets (PMs) (per layer) dual-winding structure is chosen to improve control flexibility and fault tolerance ability that has ...
Bin Li, Rujian Yu, Hua Li, Guidan Li
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Nonlinear optimal control for permanent magnet synchronous spherical motors
Robotic Intelligence and Automation, 2023Purpose Permanent magnet synchronous spherical motors can have wide use in robotics and industrial automation. They enable three-DOF omnidirectional motion of their rotor. They are suitable for several applications, such as actuation in robotics, traction in electric vehicles and use in several automation systems.
Rigatos G. G. +3 more
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Modeling and control of a permanent magnet spherical stepper motor
2007 International Conference on Electrical Machines and Systems (ICEMS), 2007This paper describes a simplified torque calculation method with the non-linear system dynamic model and the controller design to implement the 3D real-time motion control under the presented continuous trajectory tracking mode. The perturbation of the system parameters, the model error and the external disturbance result in the actual system ...
null Zheng Li, null Qunjing Wang
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