US 12,015,370 B2
Systems and methods for controlling stepping motor
Xiaoling Shi, Hangzhou (CN); Zengqi Yang, Hangzhou (CN); and Jianping Li, Hangzhou (CN)
Assigned to ZHEJIANG DAHUA TECHNOLOGY CO., LTD., Hangzhou (CN)
Filed by ZHEJIANG DAHUA TECHNOLOGY CO., LTD., Zhejiang (CN)
Filed on May 11, 2022, as Appl. No. 17/662,849.
Application 17/662,849 is a continuation of application No. PCT/CN2020/107841, filed on Aug. 7, 2020.
Claims priority of application No. 201911349218.7 (CN), filed on Dec. 24, 2019.
Prior Publication US 2022/0271693 A1, Aug. 25, 2022
Int. Cl. H02P 29/64 (2016.01); H02P 8/12 (2006.01); H02P 8/14 (2006.01); H02P 8/34 (2006.01)
CPC H02P 8/12 (2013.01) [H02P 8/34 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system for controlling a stepping motor, comprising:
at least one storage medium including a set of instructions for controlling a stepping motor; and
at least one processor in communication with the storage medium, wherein when executing the set of instructions, the at least one processor is directed to perform operations including:
determining a driving voltage based on a function, wherein the function includes a predetermined electric current and operating parameters of the stepping motor, and the function includes |U|=√(|I|ωL+ω|C|sin γ)2+(|I|R+ω|C|cos γ)2, wherein
|U|denotes an amplitude of the driving voltage,
|I| denotes an amplitude of the predetermined electric current,
the predetermined electric current is a sinusoidal current,
ωdenotes an angular frequency of the driving voltage,
|C| denotes a back electromotive force constant of the stepping motor,
L denotes a phase inductance of the stepping motor,
γ denotes a load angle of the stepping motor, and
R denotes a sum of a phase resistance of the stepping motor and an on-resistance of the H-bridge; and
driving the stepping motor to work based on the driving voltage via an H-bridge.