MUMBAI, India, July 30 -- Intellectual Property India has published a patent application (202641088191 A) filed by Suprajit Engineering Ltd. on July 20, 2026, for A Pmdc Motor With Sensorless Position Control.
Inventors include Ashutosh Rai; Vijay Kumar G J; and Nithin Anjaneya.
The application for the patent was published on July 24, 2026, under issue no. 30/2026.
Abstract: A PMDC MOTOR WITH SENSORLESS POSITION CONTROL. The system (100) comprising a housing (208), and a shaft (106) defining an axis (112) of rotation with proximal and distal ends. An armature (102) is mounted coaxially proximate to the proximal end, and a flat planar commutator (104), having a plurality of conductive segments (402) separated by intermediate insulative segments (404), is mounted coaxially on the shaft (106). A PCB (108) is disposed proximate to the distal end, and a pair of brushes (110) interacts with the flat planar commutator (104). A pair of engagement members (202), disposed between the PCB (108) and brushes (110), maintains continuous contact and enables electrical communication therebetween. The PCB (108) detects and counts current ripples caused by insulative segments (404) traversing the brushes (110), and controls the motor to execute predetermined rotations, enabling rotor position estimation. Reference figure: FIG. 10
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