| 摘要 |
<P>PROBLEM TO BE SOLVED: To alternate a DC motor and an AC motor at low cost through small-scale constitution when using both functions of DC motor control and AC motor control. <P>SOLUTION: A magnetic flux current command AC/DC switching part 11 of a control part 10 receives a magnetic flux current command from a magnetic flux command part 121, receives a switching signal, and outputs the input magnetic flux current command when the switching signal indicates AC or a preset magnetic flux current command of data 0 when the switching signal indicates DC. An electric angle AD/DC switching part 12 receives an electric angle calculated by an electric angle calculation part 130, receives the switching signal, and outputs the input electric angle when the switching signal indicates AC or a preset fixed electric angle of 330° when the switching signal indicates DC. A voltage command 2-phase/3-phase conversion part 131 generates a U-phase voltage command and a V-phase voltage command which are equal in absolute value and opposite in phase, and a W-phase voltage command of data 0 when driving a DC motor 105. <P>COPYRIGHT: (C)2012,JPO&INPIT |
