Feedforward control of permanent magnet dc motors
AssigneeSteering Solutions IP Holding Corporation
InventorsPerit Pramod, Rakesh Mitra
Life of this patent
Estimating the term…
Abstract
Technical solutions are described for a motor control system that includes a feedforward control module to control an output torque generated by the motor. The feedforward controlling includes computing a first voltage command for the motor based on an input torque signal. Further, the feedforward controlling includes computing a second voltage command for the motor based on a brush drop voltage of the motor and a back-EMF drop voltage of the motor. Further, feedforward controlling includes computing a voltage command for the motor by summing the first voltage command and the second voltage command. Further yet, the feedforward controlling includes sending the voltage command to the motor for generating the output torque.
Claims20
A motor control system for a motor comprising:
- a feedforward control module configured to control an output torque generated by the motor by:
- computing a first voltage command for the motor based on an input torque signal;
- computing a second voltage command for the motor based on a brush drop voltage of the motor and a back-EMF drop voltage of the motor;
- computing a voltage command for the motor by summing the first voltage command and the second voltage command;
- and
- sending the voltage command to the motor for generating the output torque.
A method for controlling a motor using feedforward control, the motor being a permanent magnet DC, and the method comprising:
- computing, by a motor control system, a first voltage command for the motor based on an input torque signal;
- computing, by the motor control system, a second voltage command for the motor based on a brush drop voltage of the motor and a back-EMF drop voltage of the motor;
- computing, by the motor control system, a voltage command for the motor by summing the first voltage command and the second voltage command;
- and
- sending, by the motor control system, the voltage command to the motor for generating an output torque.
A system comprising:
- a motor;
- and
- a motor control system comprising a controller module configured to control output torque of the motor by feedforward current control by:
- computing a first voltage command for the motor based on an input torque signal;
- computing a second voltage command for the motor based on a brush drop voltage of the motor and a back-EMF drop voltage of the motor;
- computing a voltage command for the motor by summing the first voltage command and the second voltage command;
- and
- sending the voltage command to the motor for generating the output torque.
Dependencies are inferred from the claim text.