公开(公告)号：US20250112568A1

公开(公告)日：2025-04-03

申请号：US18477955

申请日：2023-09-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： RAJAN LAKSHMI NARASIMHA ,  DAVID P MAGEE

IPC: H02P6/182 ,  H02P6/08 ,  H02P6/15 ,  H03M1/12

Abstract: A method includes receiving a first measurement signal representing a first time between transitions of a motor commutation state. The method further includes receiving a second measurement signal representing a second time between transitions of a motor floating terminal voltage. The method further includes determining a motor speed state based on a combination of the first and second measurement signals, determining a motor commutation state based on the motor speed state and the motor floating terminal voltage; and providing a control signal to a motor inverter based on the motor commutations state.

公开(公告)号：US20210203257A1

公开(公告)日：2021-07-01

申请号：US16728664

申请日：2019-12-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： RAJAN LAKSHMI NARASIMHA ,  DAVID PATRICK MAGEE

IPC: H02P6/15 ,  H02P6/20

Abstract: Systems and methods for sensorless trapezoidal control of brushless DC motors provide effective high-torque startup and low speed operation without the use of Hall effect sensors or encoders during motor operation. The systems and methods also provide the ability to boost signal-to-noise ratio for motor startup and low speed operation via an augmenting supply voltage. Sampling architectures and current-dependent inductance modeling architectures for the control systems are also described.