Hamilton Sundstrand Corporation

William E Villano

Kirk A Lillestolen

Kevin D Gibbons

Teddy L Jones

Dean Anthony Rametta

Naison E Mastrocola

Richard A Poisson

Kanwalpreet Reen

Vaibhav Kumar Somani

Robert D Klapatch

Gregory T Wallen

Alagan Thiruvarul Selvakkumaran Sathyan

Rachel Welsh

Raviprakash Yadav

David J Manna

Ishwar Bhat

Francis W Recck

A computing method and device for detecting an anomaly event in a hardware- based machine learning anomaly event detector. Data is received from a plurality of input/output interfaces (I/O) or internal functions, wherein the received data of each I/O is associated with a certain sensor or effector. The received data from the plurality of I/O's is analyzed to determine the occurrence of an anomaly event for data from one of the plurality of I/O's. This analysis includes using machine learning techniques dynamically programmed to detect an anomaly event for the I/O data being analyzed by using predetermined parameter values. The predetermined parameter values are retrieved from memory, and are associated with the I/O data being analyzed. Stored in memory for subsequent analysis is at least a portion of the received data from the I/O data being analyzed accompanied with associated neural network output when it is determined an anomaly event occurred for the I/O data being analyzed using the machine learning techniques.

Apparatus and method for diagnosing no fault failure found in electronic systems

A heat exchanger is configured to adjust a flow restriction of flow passages through the heat exchanger in response to changes in temperature of elements that define at least a portion of the flow passages. The elements include a first material having a first coefficient of thermal expansion, and a second material having a second coefficient of thermal expansion that is different from the first coefficient of thermal expansion.

Passive hex flow regulation

According to an aspect, a power supply is provided. The power supply includes a plurality of voltage converters including a first voltage converter and one or more other voltage converters. The power supply also includes a power supply control configured to perform a plurality of operations including enabling the first voltage converter during a start-up mode of operation, monitoring and regulating an output of the first voltage converter, reconfiguring the power supply control to enable the one or more other voltage converters based on determining that the output of the first voltage converter meets a regulation threshold, and transitioning from the start-up mode of operation to a regular mode of operation based on enabling the one or more other voltage converters to output one or more regulated voltages by the power supply.

Multi-output power supply with dual power-on control

A self-powering tamper detection system architecture includes a power source, a tamper detector configured to identify a tamper event, a tamper switch electrically connected to the power source and mechanically connected to the tamper detector, a tamper controller configured to produce a tamper response when the tamper event is identified, and program memory configured to store program data. The tamper detector is configured to mechanically actuate the tamper switch when a tamper event occurs, and the tamper response provides a disruption of the program data. The tamper detector and the tamper switch can include printed circuit board and embedded transformer, whereby the embedded transformer includes an axially-moveable ferromagnetic core.

Self-powering tamper detection and response system architecture

A self-powering tamper detection system architecture includes a power source, a tamper detector configured to mechanically actuate a tamper switch when a tamper event occurs, a tamper switch electrically connected to the power source and mechanically connected to the tamper detector, a tamper unlock system configured to provide a tamper unlock signal when an authorized maintenance condition exists, a tamper controller configured to produce a tamper response when the tamper event is identified, and to not produce the tamper response when the tamper unlock signal is provided, and program memory configured to store program data. The tamper response produces a disruption of the program data.

Tamper detection and response deactivation technique

A system for determining a side of an electrical circuit exposed to a high temperature includes a printed circuit board having at least two outer edges and first and second board stiffeners of a first material disposed along the outer edges. The system also includes a control unit and a plurality of traces formed of a material that is different than the first material and has a second Seebeck coefficient. The control unit determines whether the first edge or second edge is closer to the high temperature based on a voltage differential between a trace connecting it to the first end of the first board stiffener and a trace connecting to the first end of the second board stiffener.

Differential and high rate of change temperature sensing circuit

A power supply system with redundant control includes a power conversion unit configured to provide a regulated output voltage, a first power supply controller configured to control the power conversion unit such that the regulated output voltage is within a selected range, a second power supply controller having power supply controller diversity from the first power supply controller configured to control the power conversion unit such that the regulated output voltage is within a selected range, and a controller selector configured to enable either the first power supply controller or the second power supply controller in response to a control signal from a logic control circuit. The power supply controller diversity can be duty cycle diversity, frequency diversity, power supply requirement diversity, manufacturer diversity, part number diversity, foundry diversity, fabrication batch diversity, and/or manufacturing date diversity.

Redundant power supply having diverse dual controllers

A modular embedded controller includes an enclosure with an external interface, a generic motherboard, and an external device-specific input/output daughterboard. The generic motherboard has a supervisory processor and a plurality of daughterboard seats and is supported in the enclosure. The external device-specific input/output daughterboard is supported in one of the daughterboard seats, connects the external interface to the motherboard supervisory processor, and has an input/output processor translate data communicated between the motherboard supervisory processor and a device connected to the external interface. Embedded engine controllers and gas turbine engines with embedded controllers are also described.

Embedded controllers with modular architecture

A self-powering tamper system architecture, includes a power source, a removable chassis cover configured such that a movement of the chassis cover is indicative of a tamper event, a switch device electrically connected to the power source and mechanically connected to the chassis cover, configured to switch position when the tamper event occurs, a tamper controller electrically connected to the switch device and configured to produce a tamper response when the switch device switches position, and program memory configured to store program data. The tamper response produces a disruption of program data.

Self-powering tamper detection switch and response system architecture

A system to provide differential movement between a first surface, a second surface and a fixed surface includes a first surface movable between a first position and a second position; a second surface movable with the first surface and further movable beyond the first surface; a shaft connected to the second surface to move the second surface; and a drive unit connected to the fixed surface to drive the shaft to move the second surface relative to the first surface and to allow the shaft to move through the drive unit when the second surface is being moved by the first surface.

Actuation system

A current sense system includes a current transformer having a primary coil and a secondary coil, wherein the secondary coil has a first and second terminal; a burden resistor connected between the first terminal of the secondary coil and ground; a monitor circuit that measures current in the primary coil by monitoring voltage across the burden resistor; and a built-in test (BIT) circuit connected to the second terminal of the secondary coil. The BIT circuit provides a virtual ground during normal operation, and either a positive voltage or a negative voltage during test operations.

Built-in test injection for current sensing circuit

A dual redundant actuation control system for controlling a plurality of actuators for positioning a plurality of moveable aircraft components. The actuation control system includes a component controller. The component controller includes two component control channels. Each of the plurality of actuators is electrically connected to each of the two component control channels such that either of the two component control channels may control any or all of the plurality of actuators.

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Canton, CT, United States of America

William E Villano