| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor drive control device and a measuring instrument therewith capable of reducing an effect of offset by noise. <P>SOLUTION: An operating timing controller 98 receives an interrupt signal from a counter 96 to perform a conversion operation by an analog/digital converter 93 with the timing different from a switching operation of a switching element 97. Specifically, energizing control over a motor 91 by the switching element 97 is performed twice, that is, at the start of each control processing period and at the on/off switching operation of energization within the control processing period by a PWM waveform. Furthermore, the conversion operation by the analog/digital converter 93 is performed almost at the end of control processing period, and between two energizing control operations by the switching element 97 so as not to overlap with the switching operation. <P>COPYRIGHT: (C)2007,JPO&INPIT |
