| 摘要 |
A resonance frequency detecting device of a multi-shaft electric motor control apparatus includes a plurality of electric motor control systems having electric motors ( 31, 32 ) for driving machines ( 41, 42 ) and controllers ( 21, 22 ) for driving the electric motors ( 31,32 ), detectors ( 51,52 ) for detecting the operating amounts of the machines ( 41,42 ), signal processors ( 61,62 ) for analyzing the frequencies of the signals of the detectors ( 51,52 ) and outputting the frequencies as resonance frequencies, and output devices ( 81,82 ) for changing the signals of the signal processors ( 61,62 ) into graphs or numeric values, a command generator ( 11 ) for giving the electric motor control system a control command for transmitting a vibration to the machines ( 41,42 ) is provided to input the signals of the detectors ( 51,52 ) to the signal processor ( 61 ) and to output them as resonance frequencies.
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