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Basic characteristics of the developed spherical stepping motor
Proceedings 1999 IEEE/RSJ International Conference on Intelligent Robots and Systems. Human and Environment Friendly Robots with High Intelligence and Emotional Quotients (Cat. No.99CH36289), 2003The positioning accuracy, output torque, and the trajectory tracing property of the developed spherical stepping motor are tested. The motor is composed of two arc-shaped stepping submotors and a rotational stepping submotor. The rotational center of each submotor is identical.
Tomoaki Yano +3 more
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ANALYSIS OF A SPHERICAL INDUCTION MOTOR
Electric Machines & Power Systems, 1987Abstract The advent of robotics and automated manufacturing processes has brought about an urgent need for novel electromechanical transducers with unusual design and performance characteristics. Operating flexibility, ruggedness, size, force to weight ratio, and robust control capabilities are design attributes which place a heavy burden on ...
KENT DAVEY +2 more
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Development of Spherical Ultrasonic Motor
CIRP Annals, 1996Abstract We have successfully developed a new type of spherical motor with two degree of freedom by ultrasonic vibration; it has ϕ45 mm rotor; the maximum speed is 30 rpm; the maximum output torque reaches 0.7 kgf cm; the maximum positioning error is less than 0.3 mm. It has very small and simple structure and has good controllability.
Shigeki Toyama, A. Kobayashi
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Spherical harmonic analysis of a novel Halbach array PM spherical motor
2007 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2007A design concept of a Halbach array permanent magnet (PM) spherical motor is proposed in this paper. Based on spherical harmonic functions, the three dimensional (3-D) magnetic fields produced by ball-shaped Halbach array rotor and parallel-magnetization rotor are analyzed.
Hongfeng Li, Changliang Xia, Tingna Shi
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IEEE Potentials, 1990
The history of spherical motors is traced, beginning with the initial research in the mid-1950s. Interest grew in the 1960s in their use in space, due to their light weight compared with that of conventional motors. In the 1970s, the spherical concept was applied to pumps where the impeller is of spherical shape so that no shaft seals are required. The
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The history of spherical motors is traced, beginning with the initial research in the mid-1950s. Interest grew in the 1960s in their use in space, due to their light weight compared with that of conventional motors. In the 1970s, the spherical concept was applied to pumps where the impeller is of spherical shape so that no shaft seals are required. The
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Development of new generation spherical ultrasonic motor
Proceedings of IEEE International Conference on Robotics and Automation, 2002We have successfully developed a new kind of spherical motor with two degree of freedom by ultrasonic vibration: it has o45 rotor; the maximum speed is 30 rpm, the maximum output torque reaches 0.7 kgf cm, the maximum positioning error is less than 0.3 mm.
Shigeki Toyama +2 more
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Multi degree of freedom spherical ultrasonic motor
Proceedings of 1995 IEEE International Conference on Robotics and Automation, 2002This paper presents a multidegree of freedom spherical ultrasonic motor. As a prototypical spherical ultrasonic motor, we have successfully developed two kinds of spherical ultrasonic motor with two degree of freedom. Each type has good controllability; the motor can drive a spherical rotor about an arbitrary axis; the maximum speed is 30 rpm; the ...
Shegeki Toyama +4 more
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Position control methods of spherical ultrasonic motor
2010 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2010In this paper, we investigate the position control of spherical ultrasonic motor (SUSM). The generated torque of SUSM is influenced by the phase difference and the driving frequency of applied AC voltages. Therefore, the control strategy is classified into three types: (a) variable phase and fixed frequency, (b) fixed phase and variable frequency, and (
Naoyuki Takesue +8 more
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Stator analysis and design of a spherical piezoelectric motor
2009 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2009A spherical motor driven by piezoelectric actuators is developed. Each set of piezoelectric actuators are laid in a line around a spherical surface, which is designed to provide one degree-of-freedom motion. Applying appropriate voltage signal with phase difference on the neighboring actuators so that traveling wave is generated.
Yung Ting +4 more
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Mechanism and Machine Theory, 2019
In this paper the authors review spherical motion generation by means of parallel manipulators or spherical motors. The state-of-the-art of spherical-motion-generator kinematics, dynamics, design optimization and novel spherical mechanisms with emerging applications are reviewed. New research problems and future developments are discussed.
Bai, Shaoping +2 more
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In this paper the authors review spherical motion generation by means of parallel manipulators or spherical motors. The state-of-the-art of spherical-motion-generator kinematics, dynamics, design optimization and novel spherical mechanisms with emerging applications are reviewed. New research problems and future developments are discussed.
Bai, Shaoping +2 more
openaire +1 more source