Abstract: A fuel supply system for use in a gas turbine engine is provided. The fuel supply system includes a fuel manifold, and a shutoff valve coupled in flow communication with the fuel manifold and positioned upstream from said fuel manifold. The shutoff valve is configured to actuate into a closed position when the gas turbine engine is operating at an overspeed condition. The system also includes a relief valve coupled in flow communication with the fuel manifold, wherein the relief valve is configured to release fuel from within the fuel manifold when the shutoff valve is in the closed position, and when a pressure within the fuel manifold is greater than a first predetermined threshold.

Abstract: An improved process for preparing buprenorphine and a method for increasing the yield of buprenorphine or a derivative thereof.

Abstract: A compressor start bleed system for a turbine system includes a compressor section. Also included is a turbine section disposed downstream of the compressor section. Further included is at least one duct fluidly coupled to the compressor section, wherein the at least one duct is configured to route a start bleed extraction from the compressor section to a location downstream of the turbine section. Yet further included is at least one control device of the at least one duct configured to actively modulate the start bleed extraction during a part speed operation of the turbine system.

Abstract: A fuel supply system is provided having a first fuel gas compressor configured to be driven by a motor and a second fuel gas compressor configured to be driven by a shaft of a gas turbine system. The first fuel gas compressor and the second fuel gas compressor are configured to supply a pressurized fuel flow to a combustor of the gas turbine system, and the first fuel gas compressor and the second fuel gas compressor are coupled to one another in series.

Abstract: Control of a vehicle to perform a task employs first control input provided by a human operator and second control input provided by an automated controller. A relationship between the first control input and the second control input is determined. Either the first control input or the second control input is used to control the vehicle to perform the task based on the determined relationship. An indicator may be used to indicate to the operator when the control input provided by the human operator is being used to control the vehicle.

Abstract: A robotic mower sensor assembly for detecting a boundary wire signal. The sensor assembly includes a plurality of analog inductive sensors with a first inductive sensor oriented along a first axis and a second inductive sensor oriented along a second, different axis. Each inductive sensor is configured to generate a signal indicative of the distance of the robotic mower from the boundary wire. A control unit communicating with the sensor assembly is configured to operate the robotic mower in response to the signals from the sensor assembly which are indicative of the distance of the robotic mower from the boundary wire.

Abstract: A navigation system for a robotic mower includes a boundary wire defining a boundary of a specified area; a boundary sensor assembly, and a vehicle control unit with a navigation arbitration logic configured to arbitrate a selection between at least a straight propagation mode and an arc propagation mode. The navigation arbitration module is configured to select the arc propagation mode when the sensor assembly indicates that the mower approaches the boundary of the specified area and has a distance from the boundary that is equal to or smaller than a specified turn distance. The boundary sensor assembly generates a sensor signal representative of a measured yaw angle of the mower relative to the boundary wire, and the navigation arbitration logic is configured to generate output information representative of a desired yaw angle dependent on an assumed actual yaw angle.

Abstract: A method is disclosed for providing a real time, radial exhaust temperature distribution in a gas turbine to improve the understanding of exhaust gas temperature in a manner similar to installing production rakes. The thermocouples are installed along the exhaust frame strut skins at a number of radial positions. The data from the thermocouples along each of the struts is used to produce a normalized radial profile of the turbine exhaust temperature. The existing turbine station instrumentation is then used to expand the normalized profile into an actual profile of the turbine exhaust temperature. The calculations/transfer functions for temperatures are obtained from data collected during performance testing with full rakes. This profile is integrated to determine a bulk Tx to improve gas turbine controls including model-based controls or corrected parameter controls (MBC/CPC) controls, or specific radial temperatures are used, to provide protective action for bucket platforms, or other turbine components.

Abstract: Systems and methods for controlling the startup of a gas turbine are described. A gas discharge component may be configured to discharge gas from a compressor component associated with the gas turbine. A fuel control component may be configured to control a fuel flow provided to a combustor component associated with the gas turbine. A drive component may be configured to supply a rotational force to a shaft associated with the gas turbine. At least one control device may be configured to (i) direct the gas discharge component to discharge gas from the compressor component, (ii) direct the fuel control component to adjust the fuel flow, and (iii) direct the drive component to rotate the shaft.

Abstract: Systems and methods for model based steam flow control to and/or through a steam turbine component are disclosed. In one embodiment, a system includes: at least one computing device configured to control a steam flow in a power generation system by performing actions comprising: generating a flow model for the steam flow based at least in part on operational data about the steam flow in the power generation system; and adjusting a characteristic of the steam flow based upon the flow model.

Abstract: A method of delivering a purge flow through a gas turbomachine includes generating a purge flow, guiding the purge flow through at least one of a combustor assembly and a turbine portion of the gas turbomachine, determining a cumulative purge volume passing through the one of the combustor assembly and the turbine portion of the gas turbomachine to determine a predetermined purge volume, and discontinuing the purge flow once the predetermined purge volume has passed through the one of the combustor assembly and the turbine portion of the gas turbomachine.

Abstract: A compressor start bleed system for a turbine system includes a compressor section. Also included is a turbine section disposed downstream of the compressor section. Further included is at least one duct fluidly coupled to the compressor section, wherein the at least one duct is configured to route a start bleed extraction from the compressor section to a location downstream of the turbine section. Yet further included is at least one control device of the at least one duct configured to actively modulate the start bleed extraction during a part speed operation of the turbine system.

Abstract: A system and method for startup control of a gas turbine is disclosed. The system and method includes defining a target startup time for the startup of the gas turbine and determining a remaining time to achieve the target startup time. The system and method includes monitoring at least one parameter associated with the startup and determining a first operating point for the parameter. The system and method adjusts the first operating point for the parameter to a second operating point based at least in part on the remaining time for the startup. The system and method controls an effector based on the second operating point for the parameter.

Abstract: An improved process for preparing buprenorphine and a method for increasing the yield of buprenorphine or a derivative thereof.

Abstract: The different illustrative embodiments provide a system for autonomous machine management comprising a number of autonomous machines, a number of nodes, a performance estimation module, and a navigation system. The number of autonomous machines is configured to perform area coverage tasks in a worksite. The number of nodes is configured to define a number of worksite areas for the worksite. The performance estimation module is executed by a processor unit and configured to calculate a percentage of work completed in the number of worksite areas. The navigation system is configured to operate an autonomous machine to perform the area coverage tasks and move between the number of worksite areas.

Abstract: Systems and methods for model based steam flow control to and/or through a steam turbine component are disclosed. In one embodiment, a system includes: at least one computing device configured to control a steam flow in a power generation system by performing actions comprising: generating a flow model for the steam flow based at least in part on operational data about the steam flow in the power generation system; and adjusting a characteristic of the steam flow based upon the flow model.

Abstract: A navigation system for a robotic mower includes a boundary wire defining a boundary of a specified area; a boundary sensor assembly, and a vehicle control unit with a navigation arbitration logic configured to arbitrate a selection between at least a straight propagation mode and an arc propagation mode. The navigation arbitration module is configured to select the arc propagation mode when the sensor assembly indicates that the mower approaches the boundary of the specified area and has a distance from the boundary that is equal to or smaller than a specified turn distance. The boundary sensor assembly generates a sensor signal representative of a measured yaw angle of the mower relative to the boundary wire, and the navigation arbitration logic is configured to generate output information representative of a desired yaw angle dependent on an assumed actual yaw angle.

Abstract: A robotic mower sensor assembly for detecting a boundary wire signal. The sensor assembly includes a plurality of analog inductive sensors with a first inductive sensor oriented along a first axis and a second inductive sensor oriented along a second, different axis. Each inductive sensor is configured to generate a signal indicative of the distance of the robotic mower from the boundary wire. A control unit communicating with the sensor assembly is configured to operate the robotic mower in response to the signals from the sensor assembly which are indicative of the distance of the robotic mower from the boundary wire.

Abstract: A method of startup control for a gas turbine system that is operating in a fired deceleration shutdown process mode is provided. The method includes determining whether the combustor flame is in a lit state. Also included is increasing a fuel flow to the gas turbine system if the combustor is determined to be in the lit state. Further included is initiating a starter system to the gas turbine system.

Abstract: Systems and methods for controlling fuel flow to a turbine component are provided. One or more parameters associated with a fuel flow to a turbine component may be monitored. The fuel flow may be modeled based at least in part on the one or more monitored parameters. The fuel flow may be adjusted to a target flow based at least in part on the modeling of the fuel flow.