| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a magnetic field position detecting error and acquire a desired torque for controlling a synchronous motor in a mechanical system for a low guide friction (an air slider) and a high resolution position detector (a laser interferometer) and a general application not limiting the position detector resolution, guide friction and load mass. <P>SOLUTION: A method implements a process for selecting a correction mode of a magnetic field position rough correction process and a magnetic field position fine correction process, the magnetic field position rough correction process for calculating the quantity of current phase correction (δ1), the magnetic field position fine correction process for calculating the quantity of current phase correction (δ2) and a correction confirming process for determining the correctness of the correction process, and an applied current phase (ρ) deciding process from the quantity of current phase correction (δ2) and a temporary magnetic field position (θ) detected by the position detector. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
