• Journal of Power Electronics
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• v.19 no.3
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• pp.794-802
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• 2019

Magnetic geared motors are driven using the same operating principle as conventional synchronous motors in which a magnetic gear is embedded. The magnetic geared motor is structurally similar to a magnetic gear. However, by applying currents to the stator coil, the high-speed rotor is rotated by a magnetic field and the low-speed rotor is rotated according to the gear ratio. In this paper, the operational principle of a magnetic geared motor and the magnetic flux density in its inner and outer air gaps are described. Then the magnetic flux density in the two air gaps is used to express a method for calculating the electrical and mechanical output. Results obtained with the analytical calculation method are compared with those of the finite element analysis. Finally, a prototype is used to verify the results of the analytical calculation and FEA.

• Journal of Aerospace System Engineering
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• v.3 no.3
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• pp.32-38
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• 2009

An autothrottle module for small jet aircraft Fly-By-Wire system was developed. The autothrottle was designed to be composed of DC geared motor and electro-magnetic clutch that enables smooth manual/auto switching. A controller was designed for simple position control using ON/OFF control method with a commercial motor driver. The autothrottle developed was installed in the cockpit mockup and interfaced to the flight control computer for the HILS test. The performance test proved that the throttle lever follows well the command signal from the flight control computer.