| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that noise resistance amount detection means in conventional examples can only detect and monitor the intensity of noise as a time width, cannot detect noise of a very short time width for example, and furthermore cannot detect noise when a factor other than noise causes a turbulence in a signal. <P>SOLUTION: In a motor control device provided with an inverter circuit 1 and a current detector 4 for detecting the three-phase AC output current of an inverter circuit 1, clock signals and data signals of AD converters 5, 6 are inputted to the current detector 4, a noise level is detected by measuring the clock numbers within a certain time period, and not only a normal noise but also a noise of a very short time width can be detected. <P>COPYRIGHT: (C)2012,JPO&INPIT |
