US 12,442,661 B2
Sensing device
Sung Wook Byun, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 18/557,489
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Apr. 27, 2022, PCT No. PCT/KR2022/006021
§ 371(c)(1), (2) Date Oct. 26, 2023,
PCT Pub. No. WO2022/231301, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. 10-2021-0054388 (KR), filed on Apr. 27, 2021; and application No. 10-2021-0113914 (KR), filed on Aug. 27, 2021.
Prior Publication US 2024/0377225 A1, Nov. 14, 2024
Int. Cl. G01D 3/028 (2006.01); G01D 5/12 (2006.01)
CPC G01D 3/028 (2013.01) [G01D 5/12 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A sensing device comprising:
a rotor;
a stator disposed to correspond to the rotor;
a first collector disposed on an upper side of the stator and a second collector disposed on a lower side of the stator; and
a first sensor and a second sensor disposed between the first collector and the second collector,
wherein the first collector includes a first unit collector and a second unit collector, and
compensate at least one sensing value of the first sensor and the second sensor based on a difference between a sensing value of the first sensor by magnetic flux transmitted to the first unit collector and a sensing value of the second sensor by magnetic flux transmitted to the second unit collector,
wherein the sensing value of the first sensor is compensated for with a compensation value calculated by Equation 1 below,

OG Complex Work Unit Math
where “T1c” is a compensated sensing value of the first sensor, “T1o” is a sensing value of the first sensor before compensation, “T2o” is a sensing value of the second sensor before compensation, and “a” is a compensation coefficient corresponding to an axial separation distance between the first unit collector and the second unit collector.