| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller which can correct an error in angle of magnetic flux with accuracy, without necessity of performing the adjustment of the angle of the magnetic flux manually. <P>SOLUTION: The motor controller 1 includes: the first detector 30, which outputs the first magnetic flux angle θ<SB>1</SB>and the first magnetic flux angular velocity ω<SB>1</SB>such as that a d-axis current I<SB>d</SB>and a q-axis current I<SB>q</SB>become equal each to command currents; and the second detector 31, which outputs the second magnetic flux angle θ<SB>2</SB>and the second magnetic flux angular velocity ω<SB>2</SB>such as that the d-axis current I<SB>d</SB>and the q-axis current I<SB>q</SB>become equal each to command currents, based on a cosine wave signal HS<SB>1</SB>and a sine wave signal HS<SB>2</SB>that an electromagnetic converter 15 outputs. In a correction mode, it beforehand measures a slippage in the phase of the second magnetic flux angle θ<SB>2</SB>to the first magnetic flux angle θ<SB>1</SB>, while operating a no-load motor 21, based on the first magnetic flux angle θ<SB>1</SB>and the first magnetic flux angular velocity ω<SB>1</SB>, and in its usual mode, it operates the motor normally, based on the second magnetic flux angle θ<SB>2</SB>and the second magnetic flux angular velocity ω<SB>2</SB>after correction of the slippage. <P>COPYRIGHT: (C)2010,JPO&INPIT |
