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1.发明公开公开(公告)号：US20240273245A1
公开(公告)日：2024-08-15
申请号：US18168011
申请日：2023-02-13
IPC分类号： G06F30/10
CPC分类号： G06F30/10 , G06F2119/02
摘要： An innovative method to automatically place sensors and stimuli-sensitive active actuators to neutralize the effects of structural faults and design a smart fault-resilient system is described. To the best of our knowledge, the proposed framework is the first systematic integration of thermally activated shape memory polymer actuators with a sensor distribution framework targeted to bring a damaged structural system to its native state. The framework does not explicitly model the material constitutive model and hence can be applied to linear and nonlinear material behaviors. The approach enables the design of resilient smart structures that can be additively manufactured. The framework computes a matrix of relative importance for different sensor positions and uses that to optimally place actuators to reconfigure the system in presence of faults.
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2.发明公开公开(公告)号：US20240264590A1
公开(公告)日：2024-08-08
申请号：US18105317
申请日：2023-02-03
发明人： Peetak P. Mitra , Kai Frank Goebel
IPC分类号： G05B23/02
CPC分类号： G05B23/0283 , G05B23/0254
摘要： A system determines that an asset of an engineering system has transitioned from a quasi-steady degradation stage to an accelerated degradation phase based on sensor measurements received from an asset. During the accelerated degradation phase, features are extracted from the sensor measurements that are indicative of wear of the asset. A conformal mathematical filter is applied to the features that causes the features to conform to a wear curve formulation associated with the asset. An output of the filter is resampled to form a noise-reduced signal. The noise-reduced signal is input into a sequence machine learning model. A loss function of the sequence machine learning model uses an increased penalty to overprediction and a relaxed penalty for underprediction. An output of the sequence machine learning model is used to predict a remaining useful life (RUL) of the asset.
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公开(公告)号：US20240211655A1
公开(公告)日：2024-06-27
申请号：US18086348
申请日：2022-12-21
IPC分类号： G06F30/23
CPC分类号： G06F30/23 , G06F2113/10
摘要： Techniques for determining a damping rate of unforced oscillations of a meniscus are disclosed. An example method includes receiving input describing a shape of a container, physical parameters of a liquid inside the container, and an equilibrium shape of the meniscus. The method also includes generating a mesh conforming to the shape of the container and generating a discrete version of a continuous eigenvalue problem based on this mesh. The method also includes computing, at appropriate mesh nodes, values for pressure, velocity components, and meniscus surface deformation corresponding to a suitable number of least-damped late-time oscillation modes of the liquid and computing an angular frequency and damping rate of these least-damped late-time oscillation modes from the discrete version of the continuous eigenvalue problem. The method also includes identifying the mode that has the lowest damping rate and computing a liquid relaxation time by inverting the damping rate of the identified mode.
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公开(公告)号：US20240210934A1
公开(公告)日：2024-06-27
申请号：US18086325
申请日：2022-12-21
IPC分类号： G05B23/02 , G06N3/0985
CPC分类号： G05B23/0283 , G06N3/0985
摘要： Condition-monitoring data of an engineering system is received at a computing system. The condition-monitoring data is input to a hybrid model that includes a machine learning model empowered with physics-informed transfer functions on the computing system. The machine learning model outputting a prediction of health variables of the engineering system as intermediate variables. These variables are transformed via mathematically parametrized transfer functions on the computing system. A remaining useful life of the engineering system is estimated based on the transformation outputs. The remaining useful life is used to perform a remedial action on the engineering system.
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公开(公告)号：US20240201665A1
公开(公告)日：2024-06-20
申请号：US18081086
申请日：2022-12-14
发明人： John T. Maxwell, III
IPC分类号： G05B19/418
CPC分类号： G05B19/41835 , G05B2219/23012
摘要： An approach to automating hybrid manufacturing is provided. This approach first splits an item of manufacture into irreducible pieces called atoms, then extracts constraints between the atoms, and then uses a planner to find the best way to assemble the atoms into the item of manufacture given the constraints. The approach splits the item into atoms based on various properties such as the presence or absence of support, the need for scaffolding, tool reachability constraints, and the presence of cycles of dependencies which prevent the item from being manufactured.
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6.发明公开公开(公告)号：US20240195524A1
公开(公告)日：2024-06-13
申请号：US18077108
申请日：2022-12-07
发明人： Ion Matei , Raman Goyal
IPC分类号： H04L1/00
CPC分类号： H04L1/0036
摘要： One embodiment can provide a method and system for estimating a remote quantity of interest (QoI). During operation, the system can receive, over a communication channel, a radio frequency (RF) signal carrying an estimate of the QoI measured by a sensor. The system can estimate probability distributions of a set of random channel parameters associated with the HF communication channel. The system can further reconstruct the estimate based on the probability distributions of the channel parameters and the received RF signal, determine a level of uncertainty associated with the reconstructed estimate, and combine reconstructed estimates from multiple sensors based on the determined level of uncertainty associated with each reconstructed estimate to output a combined estimate of the QoI.
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公开(公告)号：US11993514B2
公开(公告)日：2024-05-28
申请号：US17022435
申请日：2020-09-16
IPC分类号： C01B3/26 , B01D1/00 , B01J6/00 , B01J19/00 , B01J23/04 , B01J23/06 , B01J31/02 , B01J35/27 , B01J37/08 , B01J38/02 , C01B32/05
CPC分类号： C01B3/26 , B01D1/0023 , B01J6/008 , B01J19/0013 , B01J23/04 , B01J23/06 , B01J37/08 , B01J38/02 , C01B32/05 , B01J31/0277 , B01J35/27 , B01J2219/0013 , C01B2203/0277 , C01B2203/04 , C01B2203/06 , C01B2203/0883 , C01B2203/10 , C01B2203/1005 , C01B2203/1076 , C01B2203/1241 , C01B2203/1288
摘要： Methods comprising: evaporating a catalyst source to produce a catalyst gas; condensing the catalyst gas to produce a catalyst vapor comprising catalyst droplets suspended in a gas phase; and contacting the catalyst vapor with a hydrocarbon gas to catalyze a decomposition reaction of the hydrocarbon gas into hydrogen gas and carbon. And, systems comprising: a catalyst source evaporator that provides a first stream to a reactor; a hydrocarbon source that provides a second stream to the reactor; a cooling column coupled to the reactor via a third stream comprising hydrogen, catalyst liquid, solid carbon, optionally catalyst gas, and optionally unreacted hydrocarbon gas such that the cooling column receives the third stream from the reactor; and wherein the cooling column has effluent streams that include (a) a fourth stream that comprises hydrogen and optionally catalyst gas and (b) a fifth stream that comprises catalyst liquid.
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公开(公告)号：US20240118586A1
公开(公告)日：2024-04-11
申请号：US18045189
申请日：2022-10-10
CPC分类号： G02F1/395 , G02F1/3548
摘要： An electro-optical modulating device and method that provides efficient control of the nonlinear propagation constant in an optical waveguide are featured. The electro-optical modulating device provides large wavelength tunability of the generated entangled photon pairs in real-time by using an applied external bias voltage. The electro-optical modulating device uses gate-tunable material at locations near the optical waveguide. The application of an external bias voltage creates a variable field-effect which in turn varies the optical dielectric properties of the waveguide. The result is a compact active, highly efficient wavelength-tunable integrated quantum photonic device for tunable entangled photon pair generation using an external bias voltage.
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公开(公告)号：US20240091727A1
公开(公告)日：2024-03-21
申请号：US17932346
申请日：2022-09-15
发明人： Jin Ki Hong , Bradley Rupp , Mary W. Louie , Dane Andrew Boysen , Jessica de Paula Tadeu Medrado
CPC分类号： B01J6/008 , B01J19/0013 , B01J19/0053 , B01J2204/005 , B01J2219/00123 , B01J2219/00231
摘要： Systems for hydrocarbon pyrolysis are provided, which may comprise a reactor configured to contain a liquid metal; a heater operably coupled to the reactor to form a heating zone; a cooler operably coupled to the reactor to form a cooling zone; a gas delivery assembly comprising an inlet and configured to deliver a feed gas comprising a hydrocarbon as a plurality of bubbles through the liquid metal; an outlet configured to deliver a product gas to a separation assembly, the product gas formed from pyrolysis of the hydrocarbon in the liquid metal, the product gas comprising H2 and carbon; and the separation assembly configured to separate the carbon from other components of the product gas. The reactor is configured to entrain the carbon from pyrolysis of the hydrocarbon in the liquid metal into the product gas without accumulating the carbon in the interior chamber during pyrolysis.
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10.发明公开公开(公告)号：US20240080325A1
公开(公告)日：2024-03-07
申请号：US17939577
申请日：2022-09-07
IPC分类号： H04L9/40
CPC分类号： H04L63/1416 , H04L63/1425 , H04L63/145 , H04L63/30
摘要： Embodiments described herein provide a design architecture for co-designing a controller and a watermarking signal for a cyber-physical system. During operation, the architecture can determine, in conjunction with each other, respective values of a first set of parameters indicating operations of the controller and a second set of parameters representing the watermarking signal. Here, the watermarking signal is combinable with a control signal from the controller for monitoring an output signal of the cyber-physical system for detecting malicious data at different time instances. Subsequently, the architecture can determine a state manager for determining the states of the cyber-physical system from the monitored output signal based on the first and second sets of parameters. The architecture can also determine a detector capable of identifying presence of an attack from the states of the cyber-physical system at a plurality of time instances using the watermarking signal.
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