US 12,470,109 B2
Motor control method for power tools
Song Lin, Singapore (SG)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on May 5, 2023, as Appl. No. 18/143,669.
Prior Publication US 2024/0372437 A1, Nov. 7, 2024
Int. Cl. H02K 7/14 (2006.01); B25F 5/00 (2006.01); H02K 11/33 (2016.01)
CPC H02K 7/145 (2013.01) [B25F 5/00 (2013.01); H02K 11/33 (2016.01)] 24 Claims
OG exemplary drawing
 
1. A method of controlling a motor of a power tool, the method comprising:
driving the motor such that the motor rotates in a first direction;
in response to the power tool entering a stall condition, operating the motor in a first stall state for a predetermined duration or a predetermined number of motor rotation cycles, wherein in the first stall state either the motor is driven such that the motor rotates in a second direction opposite the first direction or the motor is allowed to reverse direction and freely rotate in the second direction without excitation via a gear box coupled to the motor; and
upon expiration of the predetermined duration or the predetermined number of motor rotation cycles, operating the motor in a second stall state which includes braking the motor.