SPEED CONTROLLING METHOD FOR ELECTROMAGNETIC ROTATING MACHINE

Japanese Patent JP3245194

B2

PURPOSE: To obtain stable rotation accuracy by forming a second feedback loop containing a phase compensating filter, between an output point for the signal of a first feedback loop for controlling the magnitude of acceleration in accordance with a rotational speed and the input point of an acceleration signal generating part, and increasing compressibility against disturbance.
CONSTITUTION: A speed control part 300 comprises an F-V converter 201 which converts a frequency signal from a rotational speed detecting part 7a of a motor, an integrator 202 which stabilizes its output signal, a forward transfer function part 205, and a V-I converting part 203 which converts voltage into current and transmits it to a torque generating part 101, and they form a first feedback loop. Besides, a low-pass filter 204 is used between the integrator 202 and V-I converting part 203 to constitute a second feedback loop, and disturbance responsibility is increased by setting the characteristic of the second feedback loop at a band higher than a gain intersection set in the first feedback loop.

WO/2021/113671	TECHNIQUES FOR SUB-MICRON RADIAL ALIGNMENT OF ELECTRIC MOTOR COMPONENTS AND AIR FLOW MANAGEMENT TO EXTEND MOTOR LIFESPAN
JP5317489	Manufacturing method of rotor of permanent magnet type rotary electric machine

Yasuaki Imai

JP23764691A

January 07, 2002

September 18, 1991

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Canon Electronics Inc.

H02K29/06; H02P6/10; (IPC1-7): H02P6/10; H02K29/06

JP3150085A
JP374188A
JP2228285A
JP3212183A

Yasunori Otsuka (1 person outside)

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