公开(公告)号：US10371753B1

公开(公告)日：2019-08-06

申请号：US14578427

申请日：2014-12-20

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin Wang ,  John Wang ,  Souren Soukiazian ,  Jason A. Graetz

IPC: H01M10/48 ,  G01R31/36 ,  G01R31/382

Abstract: In some variations, a method of real-time monitoring of battery capacity comprises correlating electrode open-circuit voltage with electrode state of charge for a selected electrode; compiling a look-up table to correlate the electrode open-circuit voltage with the electrode capacity at different values of the active-material capacity; during real-time operation, identifying first and second times at which battery terminal voltages are approximated as battery open-circuit voltages; and calculating battery capacity based on the difference in battery open-circuit voltages at the first and second times, current integration, and the look-up table. No reference electrode is needed, and a complete battery charge/discharge is not necessary to determine the capacity. This technique can therefore be implemented on-board and in real time to provide reliable capacity estimation even as the battery ages. The methods are applicable to various metal-ion secondary battery systems, including lithium-ion batteries, with different material chemistries.

公开(公告)号：US20180149480A1

公开(公告)日：2018-05-31

申请号：US15825067

申请日：2017-11-28

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin Wang ,  Logan D. Sorenson ,  Hung Nguyen ,  David Chang ,  Raviv Perahia

IPC: G01C21/18 ,  G01C21/16 ,  G01C21/20 ,  G01C21/08 ,  E21B44/00

CPC classification number: G01C21/18 ,  E21B7/04 ,  E21B44/005 ,  E21B47/09 ,  G01C21/08 ,  G01C21/165 ,  G01C21/20

Abstract: Described is a system for incremental trajectory estimation of an implement. During operation, the system determines a time span of each stationary period of the implement based on accelerometer and gyroscopic data. Gyroscopic bias is then estimated based on the time span and gyroscopic data. An attitude of the implement is then estimated at each time step based on the estimated gyroscopic bias and gyroscopic data. Further, a traveling distance of the implement is estimated. Finally, a trajectory of the implement is estimated based on the estimated attitude and traveling distance. Given the trajectory estimate, an implement (e.g., drilling platform, vehicle, etc.) can be caused to alter its direction based on the trajectory estimate.

公开(公告)号：US20180080310A1

公开(公告)日：2018-03-22

申请号：US15823489

申请日：2017-11-27

Applicant: HRL Laboratories, LLC

Inventor： Logan D. Sorenson ,  Shuoqin Wang ,  David L. Walter ,  Adour V. Kabakian ,  Keerti S. Kona ,  Hung Nguyen ,  Raviv Perahia ,  David Chang

IPC: E21B44/00 ,  E21B47/022 ,  E21B47/04

CPC classification number: E21B44/005 ,  E21B41/0092 ,  E21B47/022 ,  E21B47/04 ,  G01C21/16 ,  G01R33/0206

Abstract: Described is a system for estimating a trajectory of a borehole. The system processes signals of sensor streams obtained from an inertial sensor system. Using the set of processed signals, the system determines whether a drill is in a survey mode state or a continuous mode state, and a measured depth of the borehole is determined. A set of survey mode positioning algorithms is applied when the drill is stationary. A set of continuous mode navigation algorithms is applied when the drill is non-stationary. Using at least one Kalman filter, results of the set of survey mode positioning algorithms and the set of continuous mode navigation algorithms are combined. An estimate of a borehole trajectory and corresponding ellipse of uncertainty (EOU) is generated using the combined results.

公开(公告)号：US11299981B2

公开(公告)日：2022-04-12

申请号：US16208449

申请日：2018-12-03

Applicant: HRL Laboratories, LLC

Inventor： Hung Nguyen ,  Logan D. Sorenson ,  David L. Walter ,  Adour V. Kabakian ,  Raviv Perahia ,  Shuoqin Wang ,  David W. Shahan ,  Lian X. Huang ,  David T. Chang

IPC: E21B47/09 ,  E21B41/00 ,  G01P15/105 ,  G01P15/14 ,  G01C1/00 ,  G01C19/00 ,  E21B47/024 ,  E21B47/022 ,  G01P15/18

Abstract: An instrument package for use during the drilling a wellbore. The instrument package includes a plurality of instruments such as accelerometers, gyroscopes, and magnetometers; a computer is configured to determine the current position of the plurality of instruments from a set of measurements produced by the plurality of instruments; and wherein the plurality of instruments are mechanically isolated from a drill head assembly by one or more multi-degree of freedom vibration isolators. The computer preferably has at least two modes different analytical modes of analyzing the set of measurements produced by the plurality of instruments, including a continuous mode and a survey mode, the continuous mode being operational during times that active drilling is occurring and the survey mode being operational during times that the active drilling is not occurring.

公开(公告)号：US11066923B2

公开(公告)日：2021-07-20

申请号：US16018695

申请日：2018-06-26

Applicant: HRL LABORATORIES, LLC

Inventor： Shuoqin Wang ,  Logan D. Sorenson ,  David L. Walter ,  Adour V. Kabakian ,  Hung Nguyen ,  Raviv Perahia ,  David T. Chang

IPC: E21B7/04 ,  G01C19/5776 ,  E21B47/0228 ,  E21B47/06 ,  G01C21/16 ,  E21B47/022 ,  G01C17/02

Abstract: A method for generating an output of a downhole inertial measurement unit (IMU) includes: generating a trajectory between a plurality of survey points of a planned well data as a function of time, wherein the planned well data includes a plurality of three-dimensional coordinates corresponding to the survey points of an underground planned well are used to generate a trajectory comprising a plurality of trajectory coordinates between the consecutive ones of the survey points; generating sensor data for each of the trajectory coordinates as a function of time based on the geodetic reference parameters, the generated sensor data comprising: generated accelerometer output; generated gyroscopic output; and generated magnetometer output; and outputting the generated accelerometer output; the generated gyroscopic output; and the generated magnetometer output as a function of time as a generated output of the downhole IMU.

公开(公告)号：US10408622B2

公开(公告)日：2019-09-10

申请号：US15825067

申请日：2017-11-28

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin Wang ,  Logan D. Sorenson ,  Hung Nguyen ,  David Chang ,  Raviv Perahia

IPC: E21B44/00 ,  G01C21/18 ,  G01C21/08 ,  G01C21/16 ,  G01C21/20 ,  E21B47/09 ,  E21B7/04

Abstract: Described is a system for incremental trajectory estimation of an implement. During operation, the system determines a time span of each stationary period of the implement based on accelerometer and gyroscopic data. Gyroscopic bias is then estimated based on the time span and gyroscopic data. An attitude of the implement is then estimated at each time step based on the estimated gyroscopic bias and gyroscopic data. Further, a traveling distance of the implement is estimated. Finally, a trajectory of the implement is estimated based on the estimated attitude and traveling distance. Given the trajectory estimate, an implement (e.g., drilling platform, vehicle, etc.) can be caused to alter its direction based on the trajectory estimate.

公开(公告)号：US10246988B2

公开(公告)日：2019-04-02

申请号：US15279390

申请日：2016-09-28

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin Wang ,  Logan D. Sorenson ,  Hung Nguyen ,  David Chang

IPC: E21B7/04 ,  G01C21/16 ,  E21B47/022 ,  E21B47/024

Abstract: Described is a system for position estimation. A set of raw sensor outputs are acquired from a sensor of a platform. The set of raw sensor outputs are stored in non-transitory memory. A set of optimized sensor measurements is generated by deducing errors in the raw sensor outputs using an unconstrained optimization algorithm. The system determines a position of the platform based on the set of optimized sensor measurements.

公开(公告)号：US20170314384A1

公开(公告)日：2017-11-02

申请号：US15279390

申请日：2016-09-28

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin Wang ,  Logan D. Sorenson ,  Hung Nguyen ,  David Chang

IPC: E21B47/024 ,  G01C21/16 ,  E21B7/04

CPC classification number: E21B47/024 ,  E21B7/04 ,  E21B47/022 ,  G01C21/16

Abstract: Described is a system for position estimation. A set of raw sensor outputs are acquired from a sensor of a platform. The set of raw sensor outputs are stored in non-transitory memory. A set of optimized sensor measurements is generated by deducing errors in the raw sensor outputs using an unconstrained optimization algorithm. The system determines a position of the platform based on the set of optimized sensor measurements.

公开(公告)号：US09742042B2

公开(公告)日：2017-08-22

申请号：US14551003

申请日：2014-11-22

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin Wang ,  John Wang ,  Jason A. Graetz ,  Souren Soukiazian ,  Elena Sherman ,  Ping Liu ,  Mark Verbrugge

IPC: H01M10/48 ,  H01M10/42 ,  G01R31/36 ,  G01N27/416 ,  H01M10/052

CPC classification number: H01M10/4285 ,  G01N27/4161 ,  G01R31/3606 ,  G01R31/362 ,  G01R31/3624 ,  G01R31/3679 ,  H01M10/052 ,  H01M10/4221 ,  H01M10/48

Abstract: In some variations, an apparatus provides real-time monitoring of voltage and differential voltage of both anode and cathode in a battery configured with at least one reference electrode. Voltage monitors are connected to a computer programmed for receiving anode voltage signals; receiving cathode voltage signals; calculating the derivative of the anode voltage with respect to time or with respect to capacity; and calculating the derivative of the cathode voltage with respect to time or with respect to capacity. Other variations provide an apparatus for real-time assessment of capacities of both anode and cathode in a battery, comprising a computer programmed for receiving electrode voltage signals; estimating first and second electrode open-circuit voltages at two different times, and correlating the first and second electrode open-circuit voltages to first and second electrode states of charge, respectively, for each of anode and cathode. The anode and cathode capacities may then be estimated independently.

公开(公告)号：US09733312B1

公开(公告)日：2017-08-15

申请号：US15196030

申请日：2016-06-29

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin Wang ,  Ping Liu ,  John Wang

IPC: G01R31/36 ,  G06F11/30

CPC classification number: G01R31/3651 ,  G01R31/362 ,  G01R31/3624 ,  G01R31/3679 ,  G06F15/00 ,  H01M8/02 ,  H01M10/42

Abstract: The present invention provides impulse-response-based algorithms for high-speed characterization of electrochemical systems (e.g., batteries) with good accuracy. In some variations, a method for dynamic characterization of an electrochemical system comprises selecting an electrochemical system to be characterized; sensing the measured current to or from said electrochemical system; sensing the measured voltage across said electrochemical system; sensing or calculating the time derivatives of the measured current and voltage; and calculating an impulse response using a recursive or matrix-based algorithm (as disclosed herein), wherein said impulse response characterizes said electrochemical system within a selected sampling window. The algorithms are robust, incorporating noise-reduction techniques, and are suitable for real applications under various operating conditions. These algorithms, and the apparatus and systems to implement them, are able to accept various exciting signals to provide dynamic characterization of various states of the electrochemical system.