Controller for Electromechanical Braking System with Power Demand Control and Method
First Claim
Patent Images
1. An aircraft, comprising:
- at least one electromechanical actuator including a motor for applying a force to a moveable item in response to a motor drive signal;
a power supply; and
an electromechanical actuator controller for generating the motor drive signal based on a motor current command and with electrical power from the power supply, the electromechanical actuator controller including;
a motor current limiter for limiting the motor current command to at least one of a positive current limit or a negative current limit, the positive and negative current limits being a function of motor velocity by which the positive current limit and negative current limit are inversely related to the motor velocity; and
a current driver for outputting the motor drive signal to the motor in accordance with the limited motor current command.
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Abstract
A system and method for limiting peak power demand of a controller (26) for an electromechanical actuator A motor current command is limited to at least one of a positive current limit or a negative current limit, the positive and negative current limits being a function of motor velocity. A motor drive signal is output to the motor in accordance with the limited motor current command.
18 Citations
38 Claims
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1. An aircraft, comprising:
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at least one electromechanical actuator including a motor for applying a force to a moveable item in response to a motor drive signal; a power supply; and an electromechanical actuator controller for generating the motor drive signal based on a motor current command and with electrical power from the power supply, the electromechanical actuator controller including; a motor current limiter for limiting the motor current command to at least one of a positive current limit or a negative current limit, the positive and negative current limits being a function of motor velocity by which the positive current limit and negative current limit are inversely related to the motor velocity; and a current driver for outputting the motor drive signal to the motor in accordance with the limited motor current command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A controller for an electromechanical actuator having a motor that is driven in response to a motor drive signal generated by the controller, comprising:
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a motor current limiter for limiting a motor current command to at least one of a positive current limit or a negative current limit, the positive and negative current limits being a function of motor velocity by which the positive current limit and negative current limit are inversely related to the motor velocity; and a current driver for outputting the motor drive signal to the motor in accordance with the limited motor current command. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of limiting peak power demand of a controller for an electromechanical brake actuator having a motor, the electromechanical brake actuator operative to apply a braking force to brake a wheel of a vehicle, comprising:
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limiting a motor current command to at least one of a positive current limit or a negative current limit, the positive and negative current limits being a function of motor velocity by which the positive current limit and negative current limit are inversely related to the motor velocity; and outputting the motor drive signal to the motor in accordance with the limited motor current command. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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Specification