US 11,722,078 B2
Control apparatus and method of controlling the same
Takashi Fujinaga, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Apr. 20, 2021, as Appl. No. 17/234,876.
Claims priority of application No. 2020-077592 (JP), filed on Apr. 24, 2020.
Prior Publication US 2021/0336570 A1, Oct. 28, 2021
Int. Cl. H02P 8/12 (2006.01); H04N 5/232 (2006.01); H04N 23/695 (2023.01); H04N 23/661 (2023.01)
CPC H02P 8/12 (2013.01) [H04N 23/695 (2023.01); H04N 23/661 (2023.01)] 10 Claims
OG exemplary drawing
 
1. A control apparatus that controls a stepping motor of which position can be commanded by applied current values, comprising:
a determination unit configured to determine a current value to be applied to the stepping motor by looking up a first driving table, which is to be looked up when driving is to be performed in a first driving direction, and a second driving table, which is to be looked up when driving is to be performed in a second driving direction in reverse of the first driving direction,
wherein the determination unit includes an interpolation calculation unit configured to calculate the current value by interpolation calculation that looks up both the first driving table and the second driving table, in a case in which driving of the stepping motor is to be performed in a driving direction different from a driving direction of a preceding driving operation.