| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize quick pull-in to a target speed and highly accurate rotational speed control. <P>SOLUTION: In the control switching method of a motor speed controller comprising a speed control loop 3 consisting of a speed command generator 4, a speed detector 32 and a speed controller, a first PLL control loop 1 consisting of a reference command clock generator 11, a phase comparator 12, a proportional controller 13, a phase lead/lag compensation controller 14, a low-pass filter 15 and a pulse converter 16, a motor 7 and an encode 8, the speed control loop is applied in the acceleration region and the control loop is switched to the first PLL control loop in the constant speed region. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
