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18 条记录 (耗时 0.022 秒)

    MODELING OF LIQUID-GAS MENISCUS DYNAMICS FOR ARBITRARY NOZZLE GEOMETRIES
    5.
    发明公开
    MODELING OF LIQUID-GAS MENISCUS DYNAMICS FOR ARBITRARY NOZZLE GEOMETRIES 审中-公开

    公开(公告)号：US20240211655A1

    公开(公告)日：2024-06-27

    申请号：US18086348

    申请日：2022-12-21

    申请人： Palo Alto Research Center Incorporated

    发明人： Søren Taverniers ,  Adrian Lew ,  Svyatoslav Korneev ,  Christoforos Somarakis ,  Morad Behandish

    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.

    METHOD AND ARCHITECTURE FOR PROVIDING INTEGRATED DESIGN OF CYBER-PHYSICAL SYSTEM WITH WATERMARKING
    6.
    发明公开
    METHOD AND ARCHITECTURE FOR PROVIDING INTEGRATED DESIGN OF CYBER-PHYSICAL SYSTEM WITH WATERMARKING 审中-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

    申请人： Palo Alto Research Center Incorporated

    发明人： Raman Goyal ,  Christoforos Somarakis ,  Erfaun Noorani ,  Aleksandar B. Feldman ,  Shantanu Rane

    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.

    SYSTEM AND METHOD FOR MACHINE-LEARNING-ENABLED MICRO-OBJECT DENSITY DISTRIBUTION CONTROL WITH THE AID OF A DIGITAL COMPUTER
    7.
    发明申请
    SYSTEM AND METHOD FOR MACHINE-LEARNING-ENABLED MICRO-OBJECT DENSITY DISTRIBUTION CONTROL WITH THE AID OF A DIGITAL COMPUTER 有权

    公开(公告)号：US20220187785A1

    公开(公告)日：2022-06-16

    申请号：US17122404

    申请日：2020-12-15

    申请人： Palo Alto Research Center Incorporated

    发明人： Ion Matei ,  Johan de Kleer ,  Christoforos Somarakis

    IPC分类号： G05B19/402 ,  H04N9/31 ,  G06T1/20 ,  G05B13/04

    摘要： System and method that to shape micro-object density distribution (how densely the micro-objects are assembled in particular spatial regions) are provided. A high speed camera tracks existing object density distribution. An array of photo-transistor-controlled electrodes is used to generate a dynamic potential energy landscape for manipulating objects with both DEP and EP forces, and a video projector is used actuate the array. One or more computing devices are used to: process images captured by the camera to estimate existing density distribution of objects; receive a desired density distribution of micro-objects; define a model describing a variation of micro-object density over time due to capacitance-based interactions; generate a sequence of electrode potential that when generated would minimize error between the existing density distribution and a desired density distribution; and use the sequences of electrode potentials to actuate the electrodes.

    ENERGY DISSIPATIVE NOZZLES FOR DROP-ON-DEMAND PRINTING AND METHODS THEREOF
    10.
    发明申请
    ENERGY DISSIPATIVE NOZZLES FOR DROP-ON-DEMAND PRINTING AND METHODS THEREOF 有权

    公开(公告)号：US20220266512A1

    公开(公告)日：2022-08-25

    申请号：US17185814

    申请日：2021-02-25

    申请人： PALO ALTO RESEARCH CENTER INCORPORATED

    发明人： Christoforos Somarakis ,  Svyatoslav Korneev ,  Saigopal Nelaturi ,  Adrian Lew

    IPC分类号： B29C64/209 ,  B29C64/112 ,  B33Y10/00

    摘要： A nozzle for a printing system is disclosed. The nozzle includes a tank in communication with a source of printing material. The nozzle also includes a constricted dissipative section in communication with the tank, which may include an elongated internal channel. The nozzle may also include a shaping tip in communication with the constricted dissipative section may include an exit orifice. The constricted dissipative section may be axisymmetric and may include at least three internal channels not in communication with one another. Also disclosed is an array of nozzles for a printing system including a plurality of nozzles, with each nozzle including a tank in communication with a source of printing material, a constricted dissipative section in communication with the tank and configured to obstruct fluid flow and having an elongated internal channel, and a shaping tip in communication with the constricted dissipative section may include an exit orifice.