Pearne & Gordon LLP
Abnormality determination device, motor device, abnormality determination method, and drive control method of motor
An abnormality determination device has a detection unit configured to detect a change in a phase of a position signal, the phase of the position signal changing depending on a rotation of a rotor of a motor, a time measurement unit configured to measure a time depending on a detection timing of the detection of the change in the phase of the position signal, a comparison unit configured to compare a first time measured by the time measurement unit with a second time measured before the first time is measured, and a determination unit configured to determine that a drive state of the motor is abnormal based on a comparison result of the comparison of the first time with the second time.
MINEBEA MITSUMI INC.
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inventional inventional inventional
Mitsunari Hiroyuki Xiao
Terada Kaidu Zhou