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Surge control system for a compressor
A compressor active surge control system that includes an air recirculation line that has a first end connected downstream of a compressor outlet and a second...
Method and system for authenticating a security device
A method of authenticating a security device to determine if it is authorized to be used with a security system. First and second encryption keys are stored in...
Method and system for providing a linear signal from a mass airflow and/or
liquid flow transducer
A method and system for providing a linear signal from a flow transducer. A non-linear raw signal can be obtained from a mass flow transducer. An approximated...
Systems and methods for controlling a landing position of sensors deployed
from an air vehicle
A sensing device is described that is configured to be launched from an air vehicle for deployment on the ground. The sensing device includes at least one...
Integrated die level isolation for a MEMS device
A Microelectromechanical Systems (MEMS) package having a housing and a MEMS device bonded within the cavity of the housing. The MEMS device includes a MEMS...
Signal coincidence detection circuit
Signal coincidence detection circuits and methods implemented in such circuits are disclosed. An example signal coincidence detection circuit includes a first...
Dynamically switched line and fault detection for differential signaling
A differential signaling system is provided. The differential signaling system comprises one or more cable pairs for carrying signals, one or more differential...
Permalloy bridge with selectable wafer-anistropy using multiple layers
A magnetic sensing method and apparatus include a plurality of bridge circuits, wherein each bridge circuit or element within a bridge is formed on a separate...
Compositions containing fluorine substituted olefins
The use to e of tetrafluoropropenes, particularly (HFO-1234) in a variety of applications, including refrigeration equipment, is disclosed. These materials are...
LED based light guide for dual mode aircraft formation lighting
A lighting device (1) includes one or more diode light sources (32), which are configured to emit light into the peripheral edges of a light guide (20). The...
Apparatus and method for bearing lubrication in turbine engines
A lubrication system includes an inlet conduit having an inboard end attached to a bearing support and an outboard end for receiving lubricant. A lubricant inlet...
Omni-directional pressure pickup probe
A pressure pickup probe assembly includes a probe housing, a plurality of openings, and a pickup probe. The probe housing is configured to be mounted within, and...
Pressure and temperature sensing element
A pressure and sensing element is provided that includes one piezo-resistive sensing element configured as a single light implant square, and may produce outputs...
Interdigitated, full wheatstone bridge flow sensor transducer
A sensor apparatus includes a heating element comprising an upstream side and a downstream side. A first heat sensing set is generally configured adjacent to the...
Thermal isolation between heating and sensing for flow sensors
A flow sensor system includes a plurality of flow sensor chips, wherein each flow sensor chip among the plurality of flow sensor chips comprises a substrate, a...
Floating flexible firewall seal
A seal assembly is provided for sealing an interface between a shaft and a bore formed in a firewall, where the shaft has an annular foot extending radially...
Automatic fieldbus device load-mode identification
A Fieldbus device and method for handling errors arising from parameter write messages. A load mode identifier detects if the parameter write messages are...
Method and system for providing a linear signal from a mass flow
A method and system for providing a linear signal from mass flow transducer approximates the error from the original raw signal using discrete sine functions and...
Method and apparatus for an integrated GPS receiver and electronic
compassing sensor device
At least one magnetic field sensing device and GPS receiver integrated in a discrete, single-chip package, and a method of manufacture for the same. Rather than...
Cryptographic combiner using two sequential non-associative operations
A stream cipher cryptosystem includes a keystream generator receiving a key and providing a keystream. A cryptographic combiner combines a first binary data...
Method of differential-phase/absolute-amplitude QAM
A method of quadrature amplitude modulation involving encoding phase differentially and amplitude absolutely, allowing for a high data rate and spectral...
Energy aware network management
A method of managing a network of sensors in an energy aware manner includes the steps of clustering the sensors to minimize energy consumption, routing the...
Cytometer analysis cartridge optical configuration
A medium having microfluidic circuitry for sampling and analyses. The medium may be a cartridge having a window countersunk into it and containing a flow...
System and method for subtracting dither reference during
A system and method directed to using a dither signal during conversion of an analog input signal to a digital output signal without summing the dither signal to...
Sensorless control method and apparatus for a motor drive system
A method and apparatus provide a state observer control system 600 for a motor 106 that uses an extended Kalman filter 330 to predict initial rotor position and...
System and method for fault protection for permanent magnet machines
A fault protection system and method of fault protection for permanent magnet machine (PMM)-based systems that utilize machine neutral decoupling (MND) to shut...
Integral topside vacuum package
An integrated vacuum package having an added volume on a perimeter within the perimeter of a bonding seal between two wafers. The added volume of space may be an...
Azeotrope-like compositions of pentafluoropropane, methanol and
Provided are azeotrope-like compositions comprising pentafluoropropane, methanol, and dichloroethylene, and uses thereof, including use in aerosols, refrigerant...
Nanotube fabrication basis
A structure having a substrate, patterned metal layer and a catalyst island formed on the metal layer. The surface of the substrate upon which the metal layer is...
Modular pressure sensor drive connectable to a computer
The modular measuring drive system can include a housing having a cavity and being sized and shaped to fit within a disk drive bay of a computer and a measuring...
Particulate-based flow sensor
A fluid conveyance apparatus having more than one particulate matter sensing probe situated at two or more locations on the apparatus. Signals from the probes...
Coordinated multivariable control of fuel and air in engines
Methods and systems for controlling a diesel engine using a combined fuel and air-side controller are disclosed. An illustrative method may include the steps of...
Apparatus and method for identifying possible defect indicators for a
A method, apparatus, and computer program are provided for identifying a defective valve. The method, apparatus, and computer program identify one or more...
Programmable controller with saving changes indication
A programmable controller such as an HVAC controller that provides a confirmation message to a user indicating that a parameter that has been modified by the...
Burst-mode weighted sender scheduling for ad-hoc wireless medium access
A method of scheduling transmissions in an ad-hoc wireless network is invoked when a frame is received by a medium access control layer of a receiving node. The...
Precise, no-contact, position sensing using imaging
A contact free optical motion sensor for an inertial reference system. One or more image acquisition systems are adapted to produce a series of overlapping...
System for digital multi-bandwidth intermediate frequency processing and
Signal processing systems for radar installations are provided for simultaneous processing of one or more IF signals of dynamically varying frequency and...
Remote phase synchronization using a low-bandwidth timing referencer
A method and apparatus for synchronized clocking between a radar receiver and a radar transmitter includes sharing a reference signal between the transmitter and...
Systems and methods for automatic gain control for multichannel receivers
Apparatus and methods for performing automatic gain control in a radar system. One embodiment of the system includes an attenuator that controls gain of signals...
EGPWS flap position enhancement
A processor, software code, and a method for generating warning indicating that flaps are not suitably in a take-off position. A first component is configured to...
Azeotrope-like compositions of difluoromethane
The invention relates to azeotropic and azeotrope-like mixtures of HFC-32 and HCl or a mixture of HCl and Cl.sub.2, and a process for separating the...
Method and device for reducing scale formation and/or corrosion in systems
which conduct liquids
The invention relates to a method and a device for reducing scale formation and/or corrosion in systems which conduct liquids or are in contact with liquids....
System for vehicle attitude and/or momentum control
A vehicle control system is provided that includes a slat having an axis, a plurality of microwheels disposed on the slat, each microwheel having a first stator...
Electric driven, integrated metering and shutoff valve for fluid flow
A fuel control valve (100) includes a rotary throttling valve assembly (4,7) providing one or more of the benefits of being lightweight, having a relatively low...
Reduced profile electromechanical valve actuator
A relatively small, lightweight valve actuator assembly that can withstand relatively high levels of vibration and shock includes a motor, a position sensor, and...
Integrated modeling through symbolic manipulation
Integrated modeling and symbolic manipulation is leveraged for the derivation, construction, maintenance, and reuse of application-independent models. Related...
Dual wall turbine blade ultrasonic wall thickness measurement technique
A method and apparatus is provided to analyze a dual wall structure having at least one hollow core therein and having the same unknown material sound velocities...
Bundled cables and method of making the same
Bundled cables and a method for maintaining a plurality of cables together during use and installation and for allowing the cables to be easily separated for...
Optical coupler for measuring wavelength
An optical coupler for measuring mean wavelength of a broadband optical source is described. Sensitivity of the optical coupler to variations of refractive index...