US 11,753,075 B2
Calibration method for rotation angle calculation device, calibration device for rotation angle calculation device, rotation angle calculation device, motor control device, electric actuator product, and electric power
Yusuke Nishioka, Maebashi (JP); Yoshihiro Aosaki, Fujisawa (JP); and Hiroyuki Yamamura, Tokyo (JP)
Assigned to NSK LTD., Tokyo (JP)
Filed by NSK LTD., Tokyo (JP)
Filed on Feb. 14, 2022, as Appl. No. 17/670,925.
Application 17/670,925 is a division of application No. 17/299,921, granted, now 11,292,519, previously published as PCT/JP2020/047011, filed on Dec. 16, 2020.
Claims priority of application No. 2020-015125 (JP), filed on Jan. 31, 2020.
Prior Publication US 2022/0161851 A1, May 26, 2022
Int. Cl. B62D 15/02 (2006.01); B62D 5/04 (2006.01); G01D 5/16 (2006.01); G01D 18/00 (2006.01)
CPC B62D 15/0235 (2013.01) [B62D 5/0463 (2013.01); G01D 5/16 (2013.01); G01D 18/00 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A rotation angle calculation device comprising:
a sensor configured to output a detection signal depending on rotation of a rotating body;
a rotation angle calculation unit configured to calculate a rotation angle of the rotating body, based on the detection signal;
a reception unit configured to receive calibration data for calibration of a rotation angle of the rotating body calculated by the rotation angle calculation unit;
a storage unit configured to store the received calibration data;
a correction unit configured to correct a rotation angle of the rotating body calculated by the rotation angle calculation unit with the calibration data stored in the storage unit; and
a transmission unit configured to transmit rotation angle data indicating the rotation angle calculated by the rotation angle calculation unit and not corrected by the correction unit and to also transmit time difference data relating to a time difference after having captured the detection signal from the sensor until transmitting the rotation angle data.