Steering Solutions IP Holding Corporation

Thomas J Stutts

Prerit Pramod

Julie Ann Kleinau

Steven James Collier-Hallman

Michael A Eickholt

Nicholas E Gizinski

Ashish Verma

Md Abid Hossain

Technical solutions are described for controlling a brushed direct current (DC) motor, including: determining, based on one of a motor current command or an actual motor current, a brush voltage drop across a set of brushes of the brushed DC motor; determining, based on the brush voltage drop, at least one of: a first torque limit based on a supply current value not exceeding a supply current limit, and a second torque limit based on a controller supply voltage value not exceeding a maximum available voltage; determining a final torque limit based on the at least one of the first torque limit and the second torque limit; determining a limited torque command based on a torque command and not to exceed the final torque limit; determining a voltage command based on the limited torque command; and applying a DC voltage to the brushed DC motor based on the voltage command.

System and method for torque limiting of DC machines

A method includes receiving motor velocity data, and, in response to a determination that the motor velocity data indicates that a velocity of a motor is below a threshold velocity: calculating a thermal metric corresponding to a phase imbalance of the motor; identifying at least one thermal mitigation parameter based on the thermal metric; generating at least one thermal management motor position command based on the at least one thermal mitigation parameter; and selectively controlling the motor according to the thermal management motor position command.

Stall thermal protection for force feedback actuator

A method includes calculating, for a motor, a voltage constraint and calculating, for the motor, a supply current constraint and a regenerative current constraint. The method also includes calculating, for the motor, a motor current constraint and determining, for the motor, a first operating torque based on the voltage constraint, the supply current constraint, and the motor current constraint. The method also includes at least one of selectively controlling the motor based on the first operating torque and generating information associated with the first operating torque.

Systems and methods for real time permanent magnet synchronous machine control

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Linwood, MI, United States of America

Thomas J Stutts