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公开(公告)号：US11536243B2
公开(公告)日：2022-12-27
申请号：US17723690
申请日：2022-04-19
IPC分类号： F03B13/20
摘要： A nonlinear control design technique capitalizes on a wave energy converter comprising a shaped buoy having a variable geometry wave energy. For example, the shaped buoy can have an hourglass (HG) geometry having a variable cone or steepness angle. The HG buoy is assumed to operate in the heave motion of the wave. The unique interaction between the HG buoy and the wave creates a nonlinear cubic storage effect that produces actual energy storage or reactive power during operation. A multi-frequency Bretschneider spectrum wave excitation input was simulated for the HG design both with constant and varying steepness angle profiles which demonstrated further increased power generation with changing sea states for the variable design.
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公开(公告)号：US11169085B2
公开(公告)日：2021-11-09
申请号：US16793350
申请日：2020-02-18
发明人： Robert Shuchman , Michael Sayers , Reid Sawtell , Karl Bosse
摘要： Non-transitory computer-readable media, spectroradiometer systems, and methods for calibrating a spectroradiometer. In one embodiment, a non-transitory computer-readable medium includes instructions that, when executed by an electronic processor, cause the electronic processor to perform a set of operations. The set of operations includes receiving spectral data regarding an object-of-interest that is captured by a handheld spectroradiometer, detecting a characteristic of the object-of-interest by performing a spectral analysis on the spectral data that is received, and controlling a display to display the characteristic of the object-of-interest.
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公开(公告)号：US20210119452A1
公开(公告)日：2021-04-22
申请号：US17038187
申请日：2020-09-30
摘要： Pulsed power loads (PPLs) are highly non-linear and can cause significant stability and power quality issues in an electrical microgrid. According to the present invention, many of these issues can be mitigated by an Energy Storage System (ESS) that offsets the PPL. The ESS can maintain a constant bus voltage and decouple the generation sources from the PPL. For example, the ESS specifications can be obtained with an ideal, band-limited hybrid battery and flywheel system.
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公开(公告)号：US20210024229A1
公开(公告)日：2021-01-28
申请号：US16982230
申请日：2019-04-05
发明人： Lyon B. King
摘要： An interface assembly for connecting an on-board propulsion system to a testing facility includes a support member configured for coupling to a manipulation system and a mounting member configured for coupling to the on-board propulsion system. A plurality of channels extends between and couples the mounting member to the support member.
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公开(公告)号：US20200264095A1
公开(公告)日：2020-08-20
申请号：US16793350
申请日：2020-02-18
发明人： Robert Shuchman , Michael Sayers , Reid Sawtell , Karl Bosse
摘要： Non-transitory computer-readable media, spectroradiometer systems, and methods for calibrating a spectroradiometer. In one embodiment, a non-transitory computer-readable medium includes instructions that, when executed by an electronic processor, cause the electronic processor to perform a set of operations. The set of operations includes receiving spectral data regarding an object-of-interest that is captured by a handheld spectroradiometer, detecting a characteristic of the object-of-interest by performing a spectral analysis on the spectral data that is received, and controlling a display to display the characteristic of the object-of-interest.
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公开(公告)号：US10666054B2
公开(公告)日：2020-05-26
申请号：US15982850
申请日：2018-05-17
摘要： A method for designing feedforward and feedback controllers for integration of stochastic sources and loads into a nonlinear networked AC/DC microgrid system is provided. A reduced order model for general networked AC/DC microgrid systems is suitable for HSSPFC control design. A simple feedforward steady state solution is utilized for the feedforward controls block. Feedback control laws are provided for the energy storage systems. A HSSPFC controller design is implemented that incorporates energy storage systems that provides static and dynamic stability conditions for both the DC random stochastic input side and the AC random stochastic load side. Transient performance was investigated for the feedforward/feedback control case. Numerical simulations were performed and provided power and energy storage profile requirements for the networked AC/DC microgrid system overall performance. The HSSPFC design can be implemented in the Matlab/Simulink environment that is compatible with real time simulation/controllers.
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公开(公告)号：US20200088154A1
公开(公告)日：2020-03-19
申请号：US16534746
申请日：2019-08-07
IPC分类号： F03B13/14
摘要： The present invention is directed to a nonlinear controller for nonlinear wave energy converters (WECs). As an example of the invention, a nonlinear dynamic model is developed for a geometrically right-circular cylinder WEC design for the heave-only motion, or a single degree-of-freedom (DOF). The linear stiffness term is replaced by a nonlinear cubic hardening spring term to demonstrate the performance of a nonlinear WEC as compared to an optimized linear WEC. By exploiting the nonlinear physics in the nonlinear controller, equivalent power and energy capture, as well as simplified operational performance is observed for the nonlinear cubic hardening spring controller when compared to an optimized linear controller.
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公开(公告)号：US20180366952A1
公开(公告)日：2018-12-20
申请号：US15982850
申请日：2018-05-17
摘要： A method for designing feedforward and feedback controllers for integration of stochastic sources and loads into a nonlinear networked AC/DC microgrid system is provided. A reduced order model for general networked AC/DC microgrid systems is suitable for HSSPFC control design. A simple feedforward steady state solution is utilized for the feedforward controls block. Feedback control laws are provided for the energy storage systems. A HSSPFC controller design is implemented that incorporates energy storage systems that provides static and dynamic stability conditions for both the DC random stochastic input side and the AC random stochastic load side. Transient performance was investigated for the feedforward/feedback control case. Numerical simulations were performed and provided power and energy storage profile requirements for the networked AC/DC microgrid system overall performance. The HSSPFC design can be implemented in the Matlab/Simulink environment that is compatible with real time simulation/controllers.
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公开(公告)号：US10012613B2
公开(公告)日：2018-07-03
申请号：US15027014
申请日：2014-10-06
IPC分类号： G01N27/447 , G01N15/10 , B03C5/00 , G01N33/487 , G01N15/00
CPC分类号： G01N27/44791 , B03C5/005 , G01N15/1031 , G01N33/48707 , G01N2015/0073 , G01N2015/1006
摘要： A system for identifying a particle. The system includes a microfluidic device; a microelectrode array including a plurality of electrodes, the microelectrode array disposed within the microfluidic device; a plurality of particles suspended in a solution and delivered to the microelectrode array using the microfluidic device; a signal generator operatively coupled to the microelectrode array; a particle detector adjacent to the microelectrode array; and a controller in operative communication with the signal generator and the particle detector. The controller is configured to apply an oscillating voltage signal to the microelectrode array between a low frequency and a high frequency at a sweep rate, wherein the sweep rate is no more than a maximum sweep rate, and determine a distribution of the plurality of particles relative to the microelectrode array at a plurality of frequency levels between the low frequency and the high frequency.
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公开(公告)号：US09884943B2
公开(公告)日：2018-02-06
申请号：US14429663
申请日：2012-09-21
IPC分类号： C08G77/392 , C08G18/83 , C09D127/22 , A61L26/00 , C09D175/04 , A61L29/08 , A61L29/16 , C08F114/06 , C09D183/08 , C08G77/26 , C08G77/388 , C08G18/48 , C08G18/65 , C08G18/67 , C08G18/32
CPC分类号： C08G77/392 , A61L26/0014 , A61L26/0019 , A61L26/0066 , A61L29/085 , A61L29/16 , A61L2300/114 , A61L2300/606 , C08F114/06 , C08G18/3206 , C08G18/4854 , C08G18/6511 , C08G18/6705 , C08G18/833 , C08G77/26 , C08G77/388 , C09D127/22 , C09D175/04 , C09D183/08
摘要： The present invention provides stable, photosensitive polymers that release NO response to intensity and wavelength of light, methods of making such polymers and methods using such polymers.
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