Abstract: The disclosure describes a system that includes a closed-loop reference module, an adaptation module, and a control module. The closed-loop reference module is configured to execute a reference model that represents operation of an engine and determine a reference control signal and a reference state trajectory signal. The adaptation module is configured to determine an adaptation signal based on a difference between the reference state trajectory signal and an engine state trajectory signal representative of actual operation of the engine. The control module is configured to receive the reference control signal from the closed-loop reference module, the adaptation signal from the adaptation module, and the engine state trajectory signal. The control module is further configured to determine a demand signal based on the engine state trajectory signal, the adaptation signal, and the reference control signal, and output the demand signal to control operation of at least one engine component.

Abstract: A micro grid power control system may control a plurality of different sources of electrical energy, such as generators, renewable energy sources, and stored energy sources. The micro grid power control system may include hierarchical levels of control. At a system level, the micro grid power control system may include a system controller configured to selectively allocate the sources and centrally control electrical distribution of electric power within the micro grid based on system conditions to optimize system operation. Optimization of system operation may be dynamically varied by the system controller based on priorities and modeling of system operation. At a source level, each of the sources may include a source controller configured to optimize generation of electrical energy of the respective source. Optimization of a source with a respective source controller may be based on a source objective independently associated with each of the sources and source modeling.

Abstract: The disclosure describes a system that includes a closed-loop reference module, an adaptation module, and a control module. The closed-loop reference module is configured to execute a reference model that represents operation of an engine and determine a reference control signal and a reference state trajectory signal. The adaptation module is configured to determine an adaptation signal based on a difference between the reference state trajectory signal and an engine state trajectory signal representative of actual operation of the engine. The control module is configured to receive the reference control signal from the closed-loop reference module, the adaptation signal from the adaptation module, and the engine state trajectory signal. The control module is further configured to determine a demand signal based on the engine state trajectory signal, the adaptation signal, and the reference control signal, and output the demand signal to control operation of at least one engine component.

Abstract: The disclosure describes a system that includes a closed-loop reference module, an adaptation module, and a control module. The closed-loop reference module is configured to execute a reference model that represents operation of an engine and determine a reference control signal and a reference state trajectory signal. The adaptation module is configured to determine an adaptation signal based on a difference between the reference state trajectory signal and an engine state trajectory signal representative of actual operation of the engine. The control module is configured to receive the reference control signal from the closed-loop reference module, the adaptation signal from the adaptation module, and the engine state trajectory signal. The control module is further configured to determine a demand signal based on the engine state trajectory signal, the adaptation signal, and the reference control signal, and output the demand signal to control operation of at least one engine component.

Abstract: The disclosure includes a system that includes a real-time engine model module and an adaptive control module. The real-time engine model module is configured to determine an engine parameter estimate signal based on at least one feedback signal indicative of an operating parameter of an engine. The adaptive control module is configured to receive a power request signal and receive, from the real real-time engine model module, the engine parameter estimate signal. The adaptive control module is further configured to determine a power demand signal based on the power request signal and the engine parameter estimate signal, wherein the adaptive control module is configured to determine the power demand signal based on the power request signal using a set of control laws. The adaptive control module is further configured to output the power demand signal to control at least one component of the engine.

Abstract: A micro grid power control system may control a plurality of different sources of electrical energy, such as generators, renewable energy sources, and stored energy sources. The micro grid power control system may include hierarchical levels of control. At a system level, the micro grid power control system may include a system controller configured to selectively allocate the sources and centrally control electrical distribution of electric power within the micro grid based on system conditions to optimize system operation. Optimization of system operation may be dynamically varied by the system controller based on priorities and modeling of system operation. At a source level, each of the sources may include a source controller configured to optimize generation of electrical energy of the respective source. Optimization of a source with a respective source controller may be based on a source objective independently associated with each of the sources and source modeling.

Abstract: A multi-engine power system is described that includes a load requiring a total amount of electrical power, a first engine configured to provide a first portion of the total amount of electrical power to be provided to the load, and a second engine configured to provide a second portion of the total amount of electrical power to be provided to the load. The system further includes a controller configured to determine the total amount of electrical power to be provided to the load, estimate a respective service time associated with each of the first and second engines, and control each of the first and second engines to provide the total amount of electrical power to the load and to coordinate the respective service times associated with the first and second engines.

Abstract: The disclosure describes a system that includes a closed-loop reference module, an adaptation module, and a control module. The closed-loop reference module is configured to execute a reference model that represents operation of an engine and determine a reference control signal and a reference state trajectory signal. The adaptation module is configured to determine an adaptation signal based on a difference between the reference state trajectory signal and an engine state trajectory signal representative of actual operation of the engine. The control module is configured to receive the reference control signal from the closed-loop reference module, the adaptation signal from the adaptation module, and the engine state trajectory signal. The control module is further configured to determine a demand signal based on the engine state trajectory signal, the adaptation signal, and the reference control signal, and output the demand signal to control operation of at least one engine component.

Abstract: The disclosure includes a system that includes a real-time engine model module and an adaptive control module. The real-time engine model module is configured to determine an engine parameter estimate signal based on at least one feedback signal indicative of an operating parameter of an engine. The adaptive control module is configured to receive a power request signal and receive, from the real real-time engine model module, the engine parameter estimate signal. The adaptive control module is further configured to determine a power demand signal based on the power request signal and the engine parameter estimate signal, wherein the adaptive control module is configured to determine the power demand signal based on the power request signal using a set of control laws. The adaptive control module is further configured to output the power demand signal to control at least one component of the engine.

Abstract: A multi-engine power system is described that includes a load requiring a total amount of electrical power, a first engine configured to provide a first portion of the total amount of electrical power to be provided to the load, and a second engine configured to provide a second portion of the total amount of electrical power to be provided to the load. The system further includes a controller configured to determine the total amount of electrical power to be provided to the load, estimate a respective service time associated with each of the first and second engines, and control each of the first and second engines to provide the total amount of electrical power to the load and to coordinate the respective service times associated with the first and second engines.

Abstract: Disclosed are methods and apparatus for enabling user communities around the world to engage in translation of web properties while using such web properties. In certain embodiments, a translation interface is provided with a served web property to allow users to submit translations for user interface (UI) strings from a particular property interface. While a user is engaging with the web property, the interface can also enable in-context editing and submission of translations. For example, translation submission can be presented as a replacement for the translated text within the page that is being rendered to the translator user. Certain interface embodiments also are configured to allow the user community to give feedback on the submitted translations.

Abstract: Disclosed are methods and apparatus for enabling user communities around the world to engage in translation of web properties while using such web properties. In certain embodiments, a translation interface is provided with a served web property to allow users to submit translations for user interface (UI) strings from a particular property interface. While a user is engaging with the web property, the interface can also enable in-context editing and submission of translations. For example, translation submission can be presented as a replacement for the translated text within the page that is being rendered to the translator user. Certain interface embodiments also are configured to allow the user community to give feedback on the submitted translations.

Abstract: Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.

Abstract: Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.

Abstract: Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.

Abstract: Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.

Abstract: Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.

Abstract: Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.