Patents by Inventor Yichao Mao

Yichao Mao 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).

  • Publication number: 20240075625
    Abstract: An assembling apparatus and a assembling method. The assembling apparatus includes an image sensor arranged above an assembling station and a first robot arranged near to the assembling station. The first robot is configured to hold a first portion of an object to be assembled onto a target object arranged on the assembling station. The assembling apparatus includes a second robot arranged near to the assembling station and configured to hold a second portion of the object spaced apart from the first portion. The assembling apparatus includes a controller configured to cause the image sensor to capture images and control the first robot to move the first portion and based on the captured images, cause the second robot to move the second portion such that the object is aligned with the target object.
    Type: Application
    Filed: January 22, 2021
    Publication date: March 7, 2024
    Inventor: Yichao Mao
  • Publication number: 20230321835
    Abstract: Methods, apparatuses, systems, and computer readable media for tuning a robot system. In a method, sensed positions of a target that is processed by the robot system are collected from a sensor of the robot system during a movement of the robot system at a predetermined velocity and a predetermined accuracy. Robot positions of the robot system are collected from a controller of the robot system during the movement. Robot position estimations are obtained based on the robot positions and the sensed positions, the robot position estimations being associated with a sensor delay of the robot system caused by the sensor. The sensor delay is determined based on the sensed positions and the robot position estimations. Further, embodiments of present disclosure provide apparatuses, systems, and computer readable media for tuning a robot system.
    Type: Application
    Filed: September 18, 2020
    Publication date: October 12, 2023
    Inventors: Yichao Mao, Shunchong Li
  • Publication number: 20230311310
    Abstract: Methods, apparatuses, systems, and computer readable media for managing a path of a robot system. The systems include comprises an arm which has a joint for rotating the arm. In the methods, a real path of a tip of the robot system is obtained during directing a movement of the tip to follow an ideal path. A path deviation is identified between the real path and the ideal path. A transmission error of the joint is determined based on the path deviation and kinematic data associated with the movement and a plurality of rotations of the joint respectively at a plurality of time points during the movement.
    Type: Application
    Filed: September 17, 2020
    Publication date: October 5, 2023
    Inventors: Yichao Mao, Jiafan Zhang
  • Publication number: 20230049826
    Abstract: Devices, systems, and methods for time calibration. The method comprises determining a first reference position of a robot in a robot coordinate system based on first feedback information received from the robot; determining an association between the first reference position and first sensing information receive from a sensor; receiving, from the robot, second feedback information associated with a second motion of the robot and, from the sensor, second sensing information associated with the second motion; and determining a time delay between a sensing time point when a sensing position of the robot in the second motion is sensed by the sensor and a recording time point when the sensing position is recorded by the robot in the second motion.
    Type: Application
    Filed: January 22, 2020
    Publication date: February 16, 2023
    Inventor: Yichao Mao
  • Publication number: 20230047834
    Abstract: Systems, devices, and methods for controlling a robot. Some methods include, in response to determining that an object enters a reachable area of the robot, triggering a first sensor to sense a movement of the object; determining first position information of the object based on data received from the first sensor; determining second position information of the object based on second data received from a second sensor; and generating a first prediction of a target position at which the object is operated by the robot. In this way, the robot can complete an operation for the object on the AGV within a limit operation time during which the AGV passes through the reachable area of the robot. Meanwhile, by collecting the sensing data from different sensor groups, a target position at which the object is handled by the robot may be predicted more accurately.
    Type: Application
    Filed: January 22, 2020
    Publication date: February 16, 2023
    Inventors: Yichao Mao, Xinyu Fang, Shunchong Li
  • Publication number: 20230045651
    Abstract: Systems, devices, and methods for time calibration. The method can include, in responses to receiving sensing data which indicates a deviation of a tool from an object to be operated by a robot with the tool, triggering the robot to perform a plurality of transformations. Each transformation causing the tool to contact the object at a reference position; determining joint positions of a joint of the robot holding the tool or the object after the plurality of transformations; and determining a position relationship between the tool and the robot at least partially based on the joint positions and the reference position.
    Type: Application
    Filed: January 22, 2020
    Publication date: February 9, 2023
    Inventors: Xinyu Fang, Yichao Mao, Qi Lu, Jiafan Zhang
  • Publication number: 20230032982
    Abstract: A system and a method for operating a robot. The system includes a first data collector coupled to the robot and configured to determine first position information of the robot based on feedback data received from the robot. The system also includes a second data collector coupled to a sensor and configured to determine second position information of an object to be operated by the robot based on sensing data received from the sensor. The system further comprises a first estimator coupled to the first data collector and the second data collector, and configured to generate a first prediction of a target position at which the object is operated by the robot and a command generator configured to generate a command for operating the robot at least partially based on the first prediction.
    Type: Application
    Filed: January 22, 2020
    Publication date: February 2, 2023
    Inventors: Yichao Mao, Xinyu Fang
  • Patent number: 11524281
    Abstract: A phosphorus-containing molecular sieve has a phosphorus content of about 0.3-5 wt %, a pore volume of about 0.2-0.95 ml/g, and a ratio of B acid content to L acid content of about 2-10. The molecular sieve has a specific combination of characteristics, including a high ratio of B acid content to L acid content, thereby exhibiting higher hydrocracking activity and ring-opening selectivity when used in the preparation of a hydrocracking catalyst.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: December 13, 2022
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC
    Inventors: Yichao Mao, Mingfeng Li, Xiangyun Long, Runqiang Zhang, Yang Zhao
  • Publication number: 20220335735
    Abstract: Embodiments of the present disclosure provide methods for determining an object location of an object. In the method, a group of measurement locations for a group of feature marks in the object are collected from a group of sensors, respectively. A group of estimation locations are obtained for the group of feature marks based on the object location and a group of offsets between the group of estimation locations and the object location, respectively. An error function is generated based on the group of measurement locations and the group of estimation locations. The object location is determined based on the error function. With these embodiments, performance and accuracy for determining the object location may be greatly increased.
    Type: Application
    Filed: August 16, 2019
    Publication date: October 20, 2022
    Inventors: Yichao Mao, Ye Tian, Jiafan Zhang
  • Patent number: 11440170
    Abstract: The present application discloses an apparatus for mounting an O-ring to a work piece, which includes a body including a plurality of connecting holes for connecting a pressure source to the body; an annular groove formed on the body and adapted to receive the O-ring; and a plurality of air channels formed in the body, the plurality of air channels being in fluid communication with the annular groove and the plurality of connecting holes to provide negative pressure with the pressure source in the annular groove to suck the O-ring in the annular groove, the annular groove is coaxial with a groove formed on a surface of the work piece during the mounting so that the O-ring is dropped into the groove when the pressure source is disconnected from the body or provides positive pressure to the plurality of air channels.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: September 13, 2022
    Assignee: ABB SCHWEIZ AG
    Inventors: Cheng Li, Feifei Zhao, Yichao Mao
  • Publication number: 20220277603
    Abstract: Method for determining a lock type of a lock device. In the method, a group of raw data of a group of lock devices is collected from a group of sensors respectively. Here the group of lock devices are respectively mounted to an object at a group of positions, and the group of lock devices belong to at least one lock type of a plurality of lock types. A group of probability distributions are obtained based on the group of raw data. Here a probability distribution in the group of probability distributions is associated with a lock device in the group of lock devices and probabilities of lock types to which the lock device belongs. A lock type of the lock device is determined based on the group of probability distributions.
    Type: Application
    Filed: August 14, 2019
    Publication date: September 1, 2022
    Inventors: Ye Tian, Yichao Mao, Jiafan Zhang
  • Publication number: 20210395100
    Abstract: Disclosed are a phosphorus-containing high-silica molecular sieve, its preparation and application thereof, wherein the molecular sieve comprises about 86.5-99.8 wt % of silicon, about 0.1-13.5 wt % of aluminum and about 0.01-6 wt % of phosphorus, calculated as oxides and based on the dry weight of the molecular sieve, the molecular sieve has an XRD pattern with at least three diffraction peaks, the first strong peak is present at a diffraction angle of about 5.9-6.9°, the second strong peak is present at a diffraction angle of about 10.0-11.0°, and the third strong peak is present at a diffraction angle of about 15.6-16.7°. The phosphorus-containing high-silica molecular sieve shows an improved hydrocracking activity in the presence of nitrogen-containing species when used in the preparation of hydrocracking catalysts.
    Type: Application
    Filed: August 22, 2019
    Publication date: December 23, 2021
    Inventors: Yichao MAO, Mingfeng LI, Xiangyun LONG, Runqiang ZHANG, Yang ZHAO, Guangle ZHAO
  • Publication number: 20200368886
    Abstract: The present application discloses an apparatus for mounting an O-ring to a work piece, which includes a body including a plurality of connecting holes for connecting a pressure source to the body; an annular groove formed on the body and adapted to receive the O-ring; and a plurality of air channels formed in the body, the plurality of air channels being in fluid communication with the annular groove and the plurality of connecting holes to provide negative pressure with the pressure source in the annular groove to suck the O-ring in the annular groove, the annular groove is coaxial with a groove formed on a surface of the work piece during the mounting so that the O-ring is dropped into the groove when the pressure source is disconnected from the body or provides positive pressure to the plurality of air channels.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: Cheng Li, Feifei Zhao, Yichao Mao
  • Publication number: 20200338540
    Abstract: A phosphorus-containing molecular sieve has a phosphorus content of about 0.3-5 wt %, a pore volume of about 0.2-0.95 ml/g, and a ratio of B acid content to L acid content of about 2-10. The molecular sieve has a specific combination of characteristics, including a high ratio of B acid content to L acid content, thereby exhibiting higher hydrocracking activity and ring-opening selectivity when used in the preparation of a hydrocracking catalyst.
    Type: Application
    Filed: October 22, 2018
    Publication date: October 29, 2020
    Inventors: Yichao MAO, Mingfeng LI, Xiangyun LONG, Runqiang ZHANG, Yang ZHAO
  • Patent number: 9469817
    Abstract: A hydrocracking catalyst comprises a support, at least one of VIII Group metal components, and at least one of VIB Group metal components. The support comprises an acidic silica-alumina component and alumina derived from a pseudo-boehmite component, wherein the content of the acidic silica-alumina component is 3-80 wt %, the content of alumina derived from the pseudo-boehmite component is 20-95 wt %, based on the support. The support is obtained by mixing, molding, drying and calcining the acidic silica-alumina component with the pseudo-boehmite component, wherein said pseudo-boehmite component comprises pseudo-boehmite PB1 and pseudo-boehmite PB2, wherein the content of PB1 is 10-90 wt % and the content of PB2 is 0-60 wt % on a dry basis and based on the support.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: October 18, 2016
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC
    Inventors: Yichao Mao, Hong Nie, Mingfeng Li, Qinghe Yang, Zhihai Hu, Runqiang Zhang, Guangle Zhao
  • Publication number: 20150231618
    Abstract: A hydrocracking catalyst comprises a support, at least one of VIII Group metal components, and at least one of VIB Group metal components. The support comprises an acidic silica-alumina component and alumina derived from a pseudo-boehmite component, wherein the content of the acidic silica-alumina component is 3-80 wt %, the content of alumina derived from the pseudo-boehmite component is 20-95 wt %, based on the support. The support is obtained by mixing, moulding, drying and calcining the acidic silica-alumina component with the pseudo-boehmite component, wherein said pseudo-boehmite component comprises pseudo-boehmite PB1 and pseudo-boehmite PB2, wherein the content of PB1 is 10-90 wt % and the content of PB2 is 0-60 wt % on a dry basis and based on the support.
    Type: Application
    Filed: February 19, 2015
    Publication date: August 20, 2015
    Inventors: Yichao MAO, Hong NIE, Mingfeng LI, Qinghe YANG, Zhihai HU, Runqiang ZHANG, Guangle ZHAO
  • Patent number: 8883669
    Abstract: The present invention relates to a hydrocracking catalyst comprising an acidic silica-alumina, an optional alumina, an effective quantity of at least one VIII Group metal component(s), an effective quantity of at least one VIB Group metal component(s) and an organic additive, wherein the organic additive is one or more selected from the group consisting of an oxygen-containing or nitrogen-containing organic compound, and the molar ratio of the organic additive to the VIII Group metal component(s) is 0.01-10. The present invention relates further to a process for producing the hydrocracking catalyst and use of the catalyst in a process for hydrocracking hydrocarbon oils. The hydrocracking catalyst provided according to the present invention shows a higher activity for aromatic hydrosaturating and ring-opening reaction, as compared with the prior art hydrocracking catalyst.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: November 11, 2014
    Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, Sinopec
    Inventors: Yichao Mao, Hong Nie, Jianwei Dong, Zhenlin Xiong, Zhihai Hu, Yahua Shi, Dadong Li
  • Patent number: 8334231
    Abstract: The present invention provides a hydrocracking catalyst comprising a moulded composite support of a zeolite molecular sieve with alumina, at least one of VIII Group metal components, at least one of VIB Group metal components and an organic additive; said organic additive is one or more compounds selected from the group consisting of oxygen-containing or nitrogen-containing organic compounds; the content of said zeolite molecular sieve is 3˜60 wt %, the content of said alumina is 10˜80 wt %, and the content of said organic additive is 0.1˜40 wt % based on the weight of said catalyst; the content of said VIII Group metal component is 1˜15 wt % and the content of said VIB Group metal component is 5˜40 wt % as calculated on oxide and based on the weight of said catalyst. The present invention relates also to a preparation method of said hydrocracking catalyst and use of the catalyst in the hydrocracking process of hydrocarbon oil.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: December 18, 2012
    Assignees: China Petroleum and Chemical Corporation, Research Institute of Petroleum Processing, SINOPEC
    Inventors: Yichao Mao, Hong Nie, Jianwei Dong, Zhenlin Xiong, Zhihai Hu, Yahua Shi, Dadong Li
  • Publication number: 20110127192
    Abstract: The present invention relates to a hydrocracking catalyst comprising an acidic silica-alumina, an optional alumina, an effective quantity of at least one VIII Group metal component(s), an effective quantity of at least one VIB Group metal component(s) and an organic additive, wherein the organic additive is one or more selected from the group consisting of an oxygen-containing or nitrogen-containing organic compound, and the molar ratio of the organic additive to the VIII Group metal component(s) is 0.01-10. The present invention relates further to a process for producing the hydrocracking catalyst and use of the catalyst in a process for hydrocracking hydrocarbon oils. The hydrocracking catalyst provided according to the present invention shows a higher activity for aromatic hydrosaturating and ring-opening reaction, as compared with the prior art hydrocracking catalyst.
    Type: Application
    Filed: December 3, 2010
    Publication date: June 2, 2011
    Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, Research Institute of Petroleum Processing, Sinopec
    Inventors: Yichao Mao, Hong Nie, Jianwei Dong, Zhenlin Xiong, Zhihai Hu, Yahua Shi, Dadong Li
  • Publication number: 20100032341
    Abstract: The present invention provides a hydrocracking catalyst comprising a moulded composite support of a zeolite molecular sieve with alumina, at least one of VIII Group metal components, at least one of VIB Group metal components and an organic additive; said organic additive is one or more compounds selected from the group consisting of oxygen-containing or nitrogen-containing organic compounds; the content of said zeolite molecular sieve is 3˜60 wt %, the content of said alumina is 10˜80 wt %, and the content of said organic additive is 0.1˜40 wt % based on the weight of said catalyst; the content of said VIII Group metal component is 1˜15 wt % and the content of said VIB Group metal component is 5˜40 wt % as calculated on oxide and based on the weight of said catalyst. The present invention relates also to a preparation method of said hydrocracking catalyst and use of the catalyst in the hydrocracking process of hydrocarbon oil.
    Type: Application
    Filed: April 26, 2006
    Publication date: February 11, 2010
    Inventors: Yichao Mao, Hong Nie, Jianwei Dong, Zhenlin Xiong, Zhihai Hu, Dadong Li