Motor control system
AssigneeLucas Industries Limited
InventorsPeter John Cox-Smith, Paul Anthony Kendall, David Owen Sandells
Life of this patent
Estimating the term…
Abstract
A motor control system is provided for controlling at least one motor driven mechanical actuator. The control system drives the motor according to a function of the actuator position. The system is further arranged to modify the motor speed to ensure that a predetermined power limit is not exceeded.
Claims27
A motor control system for controlling at least one motor driven mechanical actuator, said motor control system being arranged to drive at least one electric motor according to a predetermined motor speed profile which varies the motor speed as a function of position of the at least one actuator driven by the motor, wherein said motor control system is further arranged to modify said motor speed versus actuator position profile during operation of said at least one electric motor to ensure that a predetermined motor power demand is not exceeded.
An electric thrust reverser control system for controlling the operation of at least one thrust reverser cowl comprising at least one electric motor for actuating said thrust reverser cowl and a motor control system for controlling at least one motor driven mechanical actuator, said motor control system being arranged to drive at least one electric motor according to a predetermined motor speed profile which varies the motor speed as a function of position of the at least one actuator driven by the motor, wherein said motor control system is further arranged to modify said motor speed versus actuator position profile during operation of said at least one electric motor to ensure that a predetermined motor power demand is not exceeded.
An electric thrust reverser control system for controlling the operation of at least one thrust reverser of an aircraft gas turbine engine, wherein an electric motor is provided for operating said thrust reverser, wherein the control system is arranged to drive the electric motor at a speed which is a function of the position of the thrust reverser, and wherein the control system is further arranged to reduce said motor speed during operation to ensure that a predetermined motor power demand limit is not exceeded.
A method of controlling an electric motor comprising:
- supplying drive signals to said electric motor in accordance with a predetermined motor speed profile, wherein the motor speed varies as a function of the position of an actuator driven by the motor;
- monitoring the power demand of said electric motor;
- and
- modifying said motor speed versus actuator position profile to ensure that a predetermined motor power demand is not exceeded.
A motor control system for controlling at least one motor driven mechanical actuator in a thrust reverser, said motor control system being arranged to drive at least one electric motor according to a predetermined motor speed profile which varies the motor speed as a function of position of the at least one actuator driven by the motor, wherein said motor control system is further arranged to modify said motor speed profile during operation of said at least one electric motor to ensure that a predetermined motor power demand is not exceeded, and wherein an actuator position demand signal is generated as a function of said motor speed profile.
A method of controlling an electric motor comprising:
- supplying drive signals to said electric motor in accordance with a predetermined motor speed profile, wherein the motor speed varies as a function of the position of an actuator driven by the motor;
- monitoring the power demand of said electric motor;
- and
- modifying said motor speed profile to ensure that a predetermined motor power demand is not exceeded, wherein the method further comprises generating an actuator position demand signal in accordance with the motor speed profile and using this to control the actuator position.
Dependencies are inferred from the claim text.