Motor control device
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsKatsutoshi Moriyama, Takehiro Hara
Life of this patent
Estimating the term…
Abstract
According to one embodiment, there is provided a motor control device including an acquisition unit, an AD conversion unit, a calculation unit and a drive control unit. The acquisition unit acquires an analog signal indicating a rotational position of a motor. The AD conversion unit AD-converts the analog signal to generate a digital value. The calculation unit estimates a slope of a waveform of the analog signal by using a plurality of the digital values and obtains an intersection timing at which a straight line corresponding to the estimated slope intersects with a threshold. The drive control unit controls driving of the motor according to a rotation cycle obtained from a plurality of the intersection timings.
Claims20
A motor control device comprising:
- an acquisition unit that acquires an analog signal indicating a rotational position of a motor;
- an AD conversion unit that AD-converts the analog signal to generate a digital value;
- a calculation unit that estimates a slope of a waveform of the analog signal by using a plurality of the digital values and obtains an intersection timing at which a straight line corresponding to the estimated slope intersects with a threshold;
- and
- a drive control unit that controls driving of the motor according to a rotation cycle obtained from a plurality of the intersection timings.
Dependencies are inferred from the claim text.