Patents by Inventor Yanchai Zhang

Yanchai Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11066902
    Abstract: A power management system may monitor data relating to respective loads on a plurality of power sources. The plurality of power sources may be associated with a drilling rig engaged in a drilling process. The power management system may determine a stage of the drilling process based on the respective loads on the plurality of power sources. The power management system may determine, based on the stage of the drilling process that is determined, respective load shares for the plurality of power sources. The power management system may manage load sharing among the plurality of power sources according to the respective load shares that are determined.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: July 20, 2021
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Maurice Dust
  • Publication number: 20210215733
    Abstract: A system and method for protecting a genset from pole slip is disclosed. The system may comprise a generator, a prime mover and a controller. The generator includes a stator and a rotor. The prime mover is configured to drive rotation of the rotor. The controller may be configured to: determine mechanical status of the generator based on data associated with a translational displacement of the rotor; determine electrical status of the generator based on (a) a load angle or (b) the load angle and a rate of change of the load angle associated with rotation of the rotor in the stator; determine an operating condition of the generator based on fusion of the mechanical status and the electrical status; if the operating condition is a pole-slip-warning, activate an output member to display or emit a warning; and, if the operating condition is a pole-slip, activate a protective action.
    Type: Application
    Filed: January 9, 2020
    Publication date: July 15, 2021
    Applicant: Caterpillar Inc.
    Inventors: Zhijun Cai, Yanchai Zhang, Wenming Zhao, Yong Sun, Xuefei Hu, Eric Wayne Ohlson, Suresh Baddam Reddy
  • Patent number: 11028842
    Abstract: A rig management system is disclosed. The rig management system may be configured to receive information to be used to control shifting of a transmission to prevent cavitation during use of the hydraulic fracturing rig. The rig management system may be configured to determine a flow rate for a pump based on the information. The rig management system may be configured to determine an output torque of the transmission based on the flow rate. The rig management system may be configured to determine a transmission gear for the transmission based on the output torque and a fuel consumption map, wherein the fuel consumption map identifies a respective fuel consumption rate for different combinations of transmission gears and output torques. The rig management system may be configured to cause the transmission to shift into the transmission gear after determining the transmission gear.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: June 8, 2021
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Zhijun Cai, Maurice Dust
  • Publication number: 20210134075
    Abstract: A computer implemented preventative maintenance schedule can includes a plurality of predetermined maintenance intervals. A replaceable maintenance item may be initially assigned to an initially assigned maintenance interval. A performance data associated with the replaceable maintenance item may be measured and an estimated end of useful life may be determined based on the performance data. The estimated end of useful life is compared to the assigned maintenance interval and, if warranted, the assigned maintenance schedule is modified.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Richard A. Carpenter, Kyle B. Walton, John J. Krone, Venkata Dandibhotla, Yanchai Zhang
  • Patent number: 10927774
    Abstract: An engine controller to control a plurality of engines is disclosed. The engine controller may identify a plurality of engines configured to provide power to a load, wherein the plurality of engines have a first set of priorities associated with providing the power to the load; receive a plurality of parameters from a plurality of monitoring devices monitoring the plurality of engines; calculate a plurality of metrics corresponding to the plurality of engines based on the plurality of parameters; determine, based on the plurality of metrics, that a switching condition is satisfied to switch from the first set of priorities to a second set of priorities for the plurality of engines; determine the second set of priorities for the plurality of engines based on the plurality of metrics; and cause the plurality of engines to provide respective amounts of power to the load based on the second set of priorities.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: February 23, 2021
    Assignee: Caterpillar Inc.
    Inventors: Zhijun Cai, Ronald Gayles, Yanchai Zhang, Stephen Nofsinger, Maurice Dust
  • Patent number: 10890061
    Abstract: A rig management system is disclosed. The rig management system may gather, from a set of sensors, data that includes: vibration data related to vibration of a valve associated with a pump of a hydraulic fracturing rig during operation of the pump, and pump speed data related to a speed of the pump during operation of the pump. The rig management system may process the data to identify a trend related to the vibration data, wherein the vibration data has been normalized based on the pump speed data. The rig management system may determine a remaining useful life of the valve based on the trend and threshold data that identifies a set of thresholds related to the vibration of the valve. The rig management system may determine that the remaining useful life satisfies a threshold. The rig management system may schedule an operation to be performed on the valve.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: January 12, 2021
    Assignee: Caterpillar Inc.
    Inventors: Zhijun Cai, Yanchai Zhang, Zhaoxu Dong
  • Publication number: 20200378283
    Abstract: A fluid degradation monitoring system may detect a replacement of a fluid of a machine. The fluid degradation monitoring system may determine, after detecting the replacement of the fluid, a first degradation estimate of the fluid using a first technique based on characteristics relating to an operation of the machine. The fluid degradation monitoring system may detect a transition in a value of a dielectric constant of the fluid from a first phase to a second phase. The fluid degradation monitoring system may determine, after detecting the transition in the value of the dielectric constant, a second degradation estimate of the fluid using a second technique based on characteristics relating to the fluid.
    Type: Application
    Filed: June 3, 2019
    Publication date: December 3, 2020
    Applicant: Caterpillar Inc.
    Inventors: Yanchai ZHANG, Kyle WALTON, Richard CARPENTER, Venkata DANDIBHOTLA, Baoyang DENG
  • Patent number: 10844854
    Abstract: A pump monitoring and notification system for a hydraulic pump includes an accelerometer and a controller. The accelerometer is associated with the hydraulic pump and is disposed relative to the hydraulic pump to generate acceleration data indicative of acceleration of the hydraulic pump. The controller is configured to access a fault threshold, access a time threshold, and determine an acceleration of the accelerometer based upon the acceleration data from the accelerometer. The controller is further configured to determine an RMS average of the acceleration of the accelerometer based upon the acceleration of the hydraulic pump, compare the RMS average of the acceleration of the accelerometer to the fault threshold, and generate an alert signal when the RMS average of the acceleration of the accelerometer exceeds the fault threshold for a time period exceeding the time threshold.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: November 24, 2020
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Zhijun Cai, Zhaoxu Dong, Xuefei Hu
  • Publication number: 20200362690
    Abstract: A power management system may monitor data relating to respective loads on a plurality of power sources. The plurality of power sources may be associated with a drilling rig engaged in a drilling process. The power management system may determine a stage of the drilling process based on the respective loads on the plurality of power sources. The power management system may determine, based on the stage of the drilling process that is determined, respective load shares for the plurality of power sources. The power management system may manage load sharing among the plurality of power sources according to the respective load shares that are determined.
    Type: Application
    Filed: May 16, 2019
    Publication date: November 19, 2020
    Applicant: Caterpillar Inc.
    Inventors: Yanchai ZHANG, Maurice DUST
  • Patent number: 10760996
    Abstract: A system for commissioning a machine such as an internal combustion engine includes commissioning probes, and a user interface having a computer receiving test data from the commissioning probes. The computer is structured to store a commissioning profile for the machine on a memory, and to populate the commissioning profile based on a compensation factor that depends on a difference between a performance response of ancillary equipment connected with the machine and an expected response. The computer outputs a commissioning suitability signal based on comparing the commissioning profile to a target profile.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: September 1, 2020
    Assignee: Caterpillar Inc.
    Inventors: Perry Converse, Michael Coppinger, Yanchai Zhang
  • Patent number: 10734814
    Abstract: A maintenance optimization control system for load sharing between includes a first engine having an associated first criteria, a second engine having an associated second criteria, and a load having a steady component and a transient component. The control system includes a controller communicably coupled to the first engine, the second engine and the load. The controller selects an engine from the first engine and the second engine based at least on the first criteria and the second criteria. The controller distributes the load between the first engine and the second engine such that only the selected engine is operated under transient component of the load.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: August 4, 2020
    Assignee: Caterpillar Inc.
    Inventors: Perry Dwain Converse, Robin Ernest de Ruiter, Theodore Ernest Wiersema, III, Yanchai Zhang
  • Patent number: 10663372
    Abstract: A rig management system is disclosed. The rig management system may be configured to receive vibration data from a set of sensors installed on one or more elements of a hydraulic fracturing rig. The rig management system may be configured to perform a first processing of the vibration data utilizing a moving window technique to identify a possible failure of a set of bearings. The rig management system may be configured to perform a second processing utilizing a set of processing techniques after identifying the possible failure of the set of bearings. The rig management system may be configured to determine that the possible failure is an actual failure based on a result of performing the second processing. The rig management system may be configured to perform an action after determining that the possible failure is the actual failure.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: May 26, 2020
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Yong Sun, Mingang Wang, Xuefei Hu, Zhaoxu Dong, Chunhui Pan
  • Patent number: 10656051
    Abstract: A system for detecting wear or failure of a genset coupling of a genset power system is provided. The system includes a vibration sensor for measuring vibrations, and an additional sensor for measuring an operating condition. A controller is configured to process operating condition data from the additional sensor using a modeling software to generate simulated data. The controller applies time domain information of at least one of the simulated data and vibration sensor data to the modeling software using a machine learning algorithm, and perform a comparison to identify wear or failure of the coupling, wherein, when performing the comparison, the controller compares at least one of: time domain information of the vibration sensor data to time domain information of the simulated data or frequency domain information of the vibration sensor data to frequency domain information of the simulated data, to identify wear or failure of the coupling.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: May 19, 2020
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Maurice Dust, Perry D Converse, Xuefei Hu, Yong Sun
  • Publication number: 20200072137
    Abstract: An engine controller to control a plurality of engines is disclosed. The engine controller may identify a plurality of engines configured to provide power to a load, wherein the plurality of engines have a first set of priorities associated with providing the power to the load; receive a plurality of parameters from a plurality of monitoring devices monitoring the plurality of engines; calculate a plurality of metrics corresponding to the plurality of engines based on the plurality of parameters; determine, based on the plurality of metrics, that a switching condition is satisfied to switch from the first set of priorities to a second set of priorities for the plurality of engines; determine the second set of priorities for the plurality of engines based on the plurality of metrics; and cause the plurality of engines to provide respective amounts of power to the load based on the second set of priorities.
    Type: Application
    Filed: September 4, 2018
    Publication date: March 5, 2020
    Applicant: Caterpillar Inc.
    Inventors: Zhijun CAI, Ronald Gayles, Yanchai Zhang, Stephen Nofsinger, Maurice Dust
  • Publication number: 20200063548
    Abstract: A rig management system is disclosed. The rig management system may gather, from a set of sensors, data that includes: vibration data related to vibration of a valve associated with a pump of a hydraulic fracturing rig during operation of the pump, and pump speed data related to a speed of the pump during operation of the pump. The rig management system may process the data to identify a trend related to the vibration data, wherein the vibration data has been normalized based on the pump speed data. The rig management system may determine a remaining useful life of the valve based on the trend and threshold data that identifies a set of thresholds related to the vibration of the valve. The rig management system may determine that the remaining useful life satisfies a threshold. The rig management system may schedule an operation to be performed on the valve.
    Type: Application
    Filed: August 23, 2018
    Publication date: February 27, 2020
    Applicant: Caterpillar Inc.
    Inventors: Zhijun CAI, Yanchai ZHANG, Zhaoxu DONG
  • Patent number: 10563545
    Abstract: Some examples described herein may involve determining an advance timing window between the valve opening or closing and a designated time that the valve is scheduled to open or close; determining a closing velocity of the valve; monitoring an engine speed of the engine; determining valve lash information based on the advance timing window, the closing velocity, and the engine speed, wherein the valve lash information identifies a magnitude of the valve lash or whether the magnitude of the valve lash associated with the valve satisfies a threshold; and performing an action based on the valve lash information.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: February 18, 2020
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Zhaoxu Dong, Arun Rajendran, Yifeng Lu, Xuefei Hu, Lidi Chen, Rodney D. Harms
  • Patent number: 10563649
    Abstract: A hydraulic fracturing system includes an engine, transmission, and hydraulic fracturing pump. A driveshaft is coupled between the transmission and the hydraulic fracturing pump to transfer torque from the engine to the hydraulic fracturing pump. The hydraulic fracturing system also includes an advisory system including a display, a memory storing fuel consumption data and component durability data, and a controller. The controller is programmed to receive pump flow and pressure settings, identify an optimal transmission gear based on the pump flow and pressure settings, the fuel consumption data and the component durability data, and cause the optimal transmission gear to be displayed on the display.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: February 18, 2020
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Venkata Dandibhotla, Maurice Dust
  • Publication number: 20200040888
    Abstract: A rig management system is disclosed. The rig management system may be configured to receive information to be used to control shifting of a transmission to prevent cavitation during use of the hydraulic fracturing rig. The rig management system may be configured to determine a flow rate for a pump based on the information. The rig management system may be configured to determine an output torque of the transmission based on the flow rate. The rig management system may be configured to determine a transmission gear for the transmission based on the output torque and a fuel consumption map, wherein the fuel consumption map identifies a respective fuel consumption rate for different combinations of transmission gears and output torques. The rig management system may be configured to cause the transmission to shift into the transmission gear after determining the transmission gear.
    Type: Application
    Filed: July 31, 2018
    Publication date: February 6, 2020
    Applicant: Caterpillar Inc.
    Inventors: Yanchai ZHANG, Zhijun CAI, Maurice DUST
  • Publication number: 20190353557
    Abstract: A rig management system is disclosed. The rig management system may be configured to receive vibration data from a set of sensors installed on one or more elements of a hydraulic fracturing rig. The rig management system may be configured to perform a first processing of the vibration data utilizing a moving window technique to identify a possible failure of a set of bearings. The rig management system may be configured to perform a second processing utilizing a set of processing techniques after identifying the possible failure of the set of bearings. The rig management system may be configured to determine that the possible failure is an actual failure based on a result of performing the second processing. The rig management system may be configured to perform an action after determing that the possible failure is the actual failure.
    Type: Application
    Filed: May 21, 2018
    Publication date: November 21, 2019
    Applicant: Caterpillar Inc.
    Inventors: Yanchai Zhang, Yong Sun, Mingang Wang, Xuefei Hu, Zhaoxu Dong, Chunhui Pan
  • Patent number: 10473008
    Abstract: A system and method for activating on a user interface an indicator of a condition of a lubricant in a machine module. The system may comprise a controller and a user interface. The controller may be configured to, for each of a first time window and a second time window: receive a plurality of lubricant characteristics and measured lubricant temperatures, calculate an adjusted lubricant characteristic, and determine a slope based on the plurality of adjusted lubricant characteristics. The controller may further determine a change in slope, and generate a signal to activate the indicator on the user interface based on the change in slope, wherein, if the change in slope exceeds a threshold, the indicator is a lubricant changed indicator.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: November 12, 2019
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Venkata Dandibhotla, Kyle Brent Walton, John J. Krone