Abstract: An actuator assembly includes an electric motor including a rotor assembly and a stator assembly configured to be actuated to cause the rotor assembly to rotate based on an amount of magnetic flux in the rotor assembly is disclosed. The assembly also includes a controllable magnetic device coupled to the rotor assembly, an actuator coupled to the rotor assembly; and a controller configured to apply electric current to the controllable magnetic device to adjust an amount of torque provided by the electric motor by adjusting the magnetic flux in the rotor assembly.

Abstract: An electric motor assembly includes a primary electric motor including a primary rotor assembly and a primary stator assembly configured to be actuated to cause the primary rotor assembly to rotate based on an amount of magnetic flux in the rotor assembly. The assembly also includes a secondary electric motor including a secondary rotor assembly and a secondary stator assembly and a controllable magnetic device coupled to at least one of the primary rotor assembly and the secondary rotor assembly. The assembly also includes a controller configured to actuate the secondary electric motor based on a failure of the primary electric motor, and apply electric current to the controllable magnetic device to reduce back electromotive force (BEMF) caused by rotation of the primary rotor assembly during actuation of the secondary electric motor.

Abstract: An embodiment of a linear motor assembly includes an armature extending linearly along an axis, the armature having a plurality of windings. The linear motor assembly also includes a magnetic assembly including a plurality of magnets arrayed in a loop configuration, a linear section of the plurality of magnets extending linearly through the plurality of windings in a direction parallel to the axis, each magnet of the linear section being oriented in the direction and configured to move in the direction due to interaction between the plurality of windings and a magnetic field generated by the magnetic assembly.

Abstract: An example system includes a slave processor and a master processor. The master processor is configured to communicate with the slave processor over a digital communication link in a first mode, and over an analog communication link in a second mode. A method is also disclosed.

Abstract: The present disclosure provides systems and methods for multiple brake actuator operation under load cell failure. In various embodiments, a system for multiple brake actuator operation comprises a controller, a load cell in communication with the controller, a current sensor in communication with the controller, and a position sensor in communication with the controller and configured to measure a rotational speed of a motor shaft.

Abstract: A system for controlling an angular position of a component of an aircraft includes a component having a shaft that includes at least one magnet. The system also includes a housing configured to receive the shaft and including at least one coil configured to generate a magnetic field based on a current through the at least one coil.

Abstract: Controller is provided for electromechanical actuator such as an electric brake actuator having a motor driven in response to motor drive signal generated by controller. Controller includes first current limiter and second current limiter. First current limiter limits current command to maximum current limit in response to detecting that current command at least one of exceeds maximum current limit setpoint or is less than minimum current limit setpoint. Second current limiter further limits current and to limited current command in response to detecting that current command exceeds topper current detection limit for specified time duration. Controller may further include intermediate current limiter between first and second current limiters for further limiting current command from first current limiter in response to detecting current command from first current limiter at least one of exceeds maximum power limit setpoint or is less than minimum power limit setpoint.

Abstract: An interface circuit for a bridge sensor has a switch that connects to a resistive bridge circuit. The resistive bridge circuit includes a first input terminal, a second input terminal, and a pair of resistive branches that connect between the first and second input terminals. Both of the resistive branches include an output terminal. The switch is connected to the first input terminal and is in series with both resistive branches for connecting and disconnecting a voltage source from the resistive branch output terminals.

Abstract: Controller is provided for electromechanical actuator such as an electric brake actuator having a motor driven in response to motor drive signal generated by controller. Controller includes first current limiter and second current limiter. First current limiter limits current command to maximum current limit in response to detecting that current command at least one of exceeds maximum current limit setpoint or is less than minimum current limit setpoint. Second current limiter further limits current and to limited current command in response to detecting that current command exceeds topper current detection limit for specified time duration. Controller may further include intermediate current limiter between first and second current limiters for further limiting current command from first current limiter in response to detecting current command from first current limiter at least one of exceeds maximum power limit setpoint or is less than minimum power limit setpoint.

Abstract: A braking system is provided. The braking system may comprise a brake stack and an electromechanical actuator mechanically coupled to the brake stack. A first hydraulic chamber may also be mechanically coupled to the brake stack and in fluid communication with a first piston of the electromechanical actuator. A second piston may be in fluid communication with the first hydraulic chamber. The second piston may also be configured to translate towards the brake stack in response to a translation of the first piston.

Abstract: A computer-implemented method for designing a built-in test is described. The method includes receiving, via a processor, a subsystem model including system parameters for a heat exchanger, wherein each of the system parameters includes a sensor variance; determining, via the processor, a test design vector based on one or more of the system parameters; and designing, via the processor, the built-in test based on the test design vector.

Abstract: The present disclosure provides systems and methods for multiple brake actuator operation under load cell failure. In various embodiments, a system for multiple brake actuator operation comprises a controller, a load cell in communication with the controller, a current sensor in communication with the controller, and a position sensor in communication with the controller and configured to measure a rotational speed of a motor shaft.

Abstract: Systems and methods of controlling a brake system are provided. The system may include the step of detecting, by a controller, a failure of a first load cell of a first electromechanical brake actuator (EBA). The method may further comprise estimating, by the controller, a force of the first EBA using a force output from a second load cell, and commanding, by the controller, the first EBA in response to the estimated force of the first EBA.

Abstract: A modular electronic control system is disclosed. The modular electronic control system may have a base control unit to which one or more internal subsystem module and/or external subsystem module may be mounted. Each subsystem module may perform a different function, or may connect with different sensors/effectors, however, each subsystem module has a standardized subsystem module mounting apparatus by which it can mechanically and electrically connect to the base control unit. As such, a standardized base control unit may receive any type of internal subsystem module and/or external subsystem module and intermediate communication and power provision between subsystem module and other aircraft systems, such as an aircraft data network.

Abstract: A signal interface unit for use on an aircraft includes a microcontroller, at least one connector, and first and second communication links. The first communication link is connected between the microcontroller and the at least one connector. The microcontroller is configured to transmit and receive data on the first communication link. The second communication link is connected to the microcontroller. The microcontroller is configured to send and receive data on an aircraft data bus using the second communication link.

Abstract: Embodiments are directed to a discrete input circuit comprising: a switch, a capacitor coupled to the switch, a first resistor connected in series with the capacitor and coupled to a power supply, and a second resistor coupled to the power supply and the switch, wherein a value of the capacitor, a value of the first resistor, and a value of the second resistor are selected to provide a wetting current from the power supply to the switch when the switch is closed in order to clean contacts associated with the switch.

Abstract: A system for controlling an angular position of a component of an aircraft includes a component having a shaft that includes at least one magnet. The system also includes a housing configured to receive the shaft and including at least one coil configured to generate a magnetic field based on a current through the at least one coil.

Abstract: An interface circuit for a bridge sensor has a switch that connects to a resistive bridge circuit. The resistive bridge circuit includes a first input terminal, a second input terminal, and a pair of resistive branches that connect between the first and second input terminals. Both of the resistive branches include an output terminal. The switch is connected to the first input terminal and is in series with both resistive branches for connecting and disconnecting a voltage source from the resistive branch output terminals.

Abstract: An example reconfigurable vehicle monitoring arrangement includes a housing securable relative to a vehicle, a communication base at least partially disposed within the housing, and a universal connector assembly configured to selectively operatively connect the communication base with a plurality of different modules. At least one of the modules is configured to communicate data gathered from a plurality of vehicle data sources to the communication base.

Abstract: A starter for an auxiliary power unit includes a direct current motor operably connectable to an auxiliary power unit. A clutch is arranged in an electrically parallel relationship and configured to operably connect the motor to the auxiliary power unit when engaged, the motor and the clutch powered by a common input line. A time delay switching element is located and configured to delay power delivery to the direct current motor thus providing for full engagement of the clutch prior to initiation of rotation of the motor.