发明名称 BRUSHLESS MOTOR
摘要 PURPOSE: To provide a brushless motor to which sine wave driving currents are supplied by using a simple rotation detector. CONSTITUTION: A field part consisting of rotor permanent magnets, the 3-phase driving windings 20A, 20B and 20C of a stator, a group of driving transistors supplying power to the driving windings, a driving command unit 43 which generates sine wave command signals and a driving unit which supplies sine wave driving currents to the driving windings are provided. The driving command unit is composed of a time measuring instrument 42 which measures a timing interval inversely proportional to the revolution of a rotor by the pulse signal of a rotation detector 41 and a driving command generating unit 45 which changes an estimated electric angle at every timing interval in response to the measured result of the time measuring instrument and generates a sine wave driving command signal corresponding to the estimated electrical angle.
申请公布号 JPH0919184(A) 申请公布日期 1997.01.17
申请号 JP19950165060 申请日期 1995.06.30
申请人 MATSUSHITA ELECTRIC IND CO LTD 发明人 GOTO MAKOTO;NARASAKI KAZUNARI;IIJIMA TOMOKUNI
分类号 G11B19/20;G11B19/28;H02P6/00;H02P6/14;H02P6/16 主分类号 G11B19/20
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