Abstract: A common mode choke apparatus includes a first bus bar forming a first plurality of loops about a first segment of a ferrite core, the first bus bar having a plurality of first upper surfaces, and a second bus bar forming a second plurality of loops about a second segment of the ferrite core, the second bus bar having a plurality of second upper surfaces.

Abstract: A pumping system includes a pump array of multiple pump-engine assemblies. Each pump-engine assembly comprises a pump and a gas turbine engine driving the pump. A manifold is coupled to the pumps. A master controller is coupled to each of the pump-engine assemblies either directly or via one or more intermediate controllers. The master controller and any intermediate controllers are collectively programmed to respond to user input including a desired hydraulic output at the manifold by automatically calculating and applying inputs to the individual pump-engine assemblies to provide the desired hydraulic output.

Abstract: A system controller manages a gas turbine engine driving a pump directly or indirectly coupled to the engine. The controller is programmed to automatically determine and adjust inputs to the gas turbine engine in order to cause the pump to produce a user-specified hydraulic output.

Abstract: A pump system for high pressure, high volume applications is presented. The pump system includes a turbo-shaft engine having a drive shaft and a high pressure, high RPM centrifugal pump coupled to the drive shaft. In certain embodiments the pump system further includes a second low pressure, high RPM centrifugal pump coupled to the drive shaft.

Abstract: A pumping system includes a pump array of multiple pump-engine assemblies. Each pump-engine assembly comprises a pump and a gas turbine engine driving the pump. A manifold is coupled to the pumps. A master controller is coupled to each of the pump-engine assemblies either directly or via one or more intermediate controllers. The master controller and any intermediate controllers are collectively programmed to respond to user input including a desired hydraulic output at the manifold by automatically calculating and applying inputs to the individual pump-engine assemblies to provide the desired hydraulic output.

Abstract: A method and a highway addressable remote transducer (HART) modem for modulating and demodulating an analog signal including a HART message are provided. With low power consumption, the less computationally intensive HART modem modulates the analog signal using a coherent 8-ary phase shift keying (C8PSK) technique with a predefined gray code lookup table and a pre-generated sample lookup table having phase modulated digital signals indexed by index vectors, and transmits a HART C8PSK analog signal to sensor devices. A C8PSK demodulator in the HART modem demodulates the HART C8PSK analog signal by performing coarse estimation and fine estimation of phase errors and by estimation of a timing offset using a decision estimator. An automatic modulation classifier of the C8PSK demodulator validates presence of the analog signal in a C8PSK protocol by determining signs of in-phase and quadrature phase signals corresponding to each subsequent processed digitized sample of the analog signal.

Abstract: A method and a Highway Addressable Remote Transducer (HART) soft modem device (SMD) for transmitting a C8PSK signal and receiving and demodulating an Analog signal in either FSK or C8PSK comprising a HART message is provided. A transmitter of HART-SMD improves efficiency by reducing the computation complexity with a novel table lookup technique. A demodulator of the HART-SMD receives the Analog signal, samples and converts the Analog signal into digital data at a predetermined digital sample rate. The demodulator implements a two-step phase estimation technique followed by a single step timing estimate to achieve an optimal operating region for the receiver so that the receiver can be ready to receive state in a very short time as required in C8PSK specifications.

Abstract: A digital engine controller compatible with multiple variants of gas turbine engine is programmed to receive identification of a variant of gas turbine engine coupled to the digital controller and thereafter to automatically determine and adjust inputs to the engine, according to the received identification of engine variant, to meet user-specified output.

Abstract: A system controller manages a gas turbine engine driving a pump directly or indirectly coupled to the engine. The controller is programmed to automatically determine and adjust inputs to the gas turbine engine in order to cause the pump to produce a user-specified hydraulic output.

Abstract: A pump system for high pressure, high volume applications is presented. The pump system includes a turbo-shaft engine having a drive shaft and a high pressure, high RPM centrifugal pump coupled to the drive shaft. In certain embodiments the pump system further includes a second low pressure, high RPM centrifugal pump coupled to the drive shaft.

Abstract: A controller for a gas turbine engine is configured to respond to one or more prescribed engine overspeed conditions. Rather than shutting the engine down, the controller substantially reduces N1 airflow and substantially concurrently activates one or more engine igniters.

Abstract: At least one controller manages a gas turbine engine driving a generator directly or indirectly coupled to the engine. The controller is programmed to automatically determine and adjust inputs to the gas turbine engine in order to cause the generator to produce a user-specified electrical output. Multiple sets of generator, engine, and controller may be used, in which case a master controller individually manages the other controllers to collectively provide the a user-specified electrical output.

Abstract: A digital engine controller compatible with multiple variants of gas turbine engine is programmed to receive identification of a variant of gas turbine engine coupled to the digital controller and thereafter to automatically determine and adjust inputs to the engine, according to the received identification of engine variant, to meet user-specified output.

Abstract: A circuit card assembly includes a heat sink, a locking mechanism, a first thermal path, and a second thermal path. The heat sink couples to a circuit board and has an upper surface and a lower surface. The heat sink has a channel extending downward along the upper surface of the heat sink. The locking mechanism is disposed within the channel and includes a plurality of solid wedges movably arranged within the channel. Movement of the wedges is effective to secure the circuit card assembly to a holder. The first thermal path extends from the circuit board through the heat sink to the lower surface of the heat sink and removes thermal energy from the circuit board. The second thermal path is formed from the circuit board, through the heat sink, and then through the wedges to the holder. The second thermal path removes thermal energy from the circuit board that is greater than a leakage amount.

Abstract: A method and a highway addressable remote transducer (HART) soft modem device for modulating and demodulating analog signals with HART messages are provided. A phase coherent frequency shift keying (FSK) modulator modulates and transmits analog signals with HART messages, and a phase coherent FSK demodulator receives and demodulates the analog signals with the HART messages. The FSK modulator is a digital modulator that outputs 1 or 0 for transmission. With oversampling and low pass filtering, the digital modulation results in low jitter and good signal to noise ratio. The FSK demodulator applies a fast energy detect algorithm and dynamically reduces or increases a clock speed of a central processing unit (CPU) of the HART soft modem device for reducing power consumption of the CPU. Furthermore, the HART soft modem device uses direct memory access (DMA) to further reduce the power consumption, thereby reducing the overall power consumption by around 50%.

Abstract: A method and a highway addressable remote transducer (HART) soft modem device for modulating and demodulating one or more analog signals with HART messages are provided. A phase coherent frequency shift keying (FSK) modulator modulates and transmits the analog signals, and a phase coherent FSK demodulator receives and demodulates the analog signals. The FSK modulator outputs 1 or 0 for transmission. With oversampling and low pass filtering, digital modulation performed by the FSK modulator results in low jitter and a good signal to noise ratio. The FSK demodulator applies a fast energy detect algorithm and dynamically reduces or increases a clock speed of a central processing unit (CPU) of the HART soft modem device for reducing power consumption of the CPU. Furthermore, the HART soft modem device uses direct memory access and runs multiple instances of a HART soft modem integrated within a microcontroller to reduce an overall power consumption.

Abstract: A method and a highway addressable remote transducer (HART) soft modem device for modulating and demodulating analog signals with HART messages are provided. A phase coherent frequency shift keying (FSK) modulator modulates and transmits analog signals with HART messages, and a phase coherent FSK demodulator receives and demodulates the analog signals with the HART messages. The FSK modulator is a digital modulator that outputs 1 or 0 for transmission. With oversampling and low pass filtering, the digital modulation results in low jitter and good signal to noise ratio. The FSK demodulator applies a fast energy detect algorithm and dynamically reduces or increases a clock speed of a central processing unit (CPU) of the HART soft modem device for reducing power consumption of the CPU. Furthermore, the HART soft modem device uses direct memory access (DMA) to further reduce the power consumption, thereby reducing the overall power consumption by around 50%.

Abstract: A method and a highway addressable remote transducer (HART) soft modem device for modulating and demodulating analog signals with HART messages are provided. A phase coherent frequency shift keying (FSK) modulator modulates and transmits analog signals with HART messages, and a phase coherent FSK demodulator receives and demodulates the analog signals with the HART messages. The FSK modulator is a digital modulator that outputs 1 or 0 for transmission. With oversampling and low pass filtering, the digital modulation results in low jitter and good signal to noise ratio. The FSK demodulator applies a fast energy detect algorithm and dynamically reduces or increases a clock speed of a central processing unit (CPU) of the HART soft modem device for reducing power consumption of the CPU. Furthermore, the HART soft modem device uses direct memory access (DMA) to further reduce the power consumption, thereby reducing the overall power consumption by around 50%.

Abstract: The present invention relates to a cooling device improving the heat transfer between a chip (2) having a semiconducting substrate (3) and a heat sink (7). The gap between a surface (11) of the chip (2) to be cooled and a surface (12) of the heat sink (7), the width of which depends on production tolerances of the elements and soldered connections, is formed as a wedge shape by an angled lower surface (12) of the heat sink, in order to create a wedge-shaped gap. A wedge element (17) having the same wedge angle as the wedge-shaped gap is inserted into said gap exactly far enough that it makes flat contact with both the chip surface (11) to be cooled and the heat sink surface (12). Dimensional deviations are thus compensated for, the use of gap fillers is avoided, and the heat transfer from the heat source to the heat sink is improved.

Abstract: A method and apparatus is presented for communicating between a platform and multiple objects, where the objects comprise a set of parameters and an object-specific interface protocol, where at least one of the object-specific interface protocols differs from at least one other object-specific interface protocol. The method includes identifying the objects and creating multiple nonobject-specific data structures, where at least one of the nonobject-specific data structures can engage each parameter of each set of parameters. The method further includes transforming, using the plurality of nonobject-specific data structures created, the object-specific interface protocols into a single nonobject-specific interface protocol for communicating between the platform and the objects.