| 摘要 |
PROBLEM TO BE SOLVED: To provide the resonance frequency detector of a motor controller, which can measure the resonance frequency with a high speed using simple operations and detect the resonance frequency by a low-cost operation device. SOLUTION: In a motor control system comprising a motor 3 driving a machine, a detecting means 5 for detecting the operation value of the motor 3, and a controller 2 for driving the motor 3 according to a control command, there are provided a command generator 1 which generates sweep sine wave signals and inputs the signals to the motor control system and a signal processor 6, which receives the frequency information of the sweep sine wave signals outputted by the command generator 1 and signals from the detecting means 5 and outputs the frequency of the sweep sine wave signal, at which the maximum absolute value of the signal of the detecting means 5 is obtained, as the resonance frequency. |
