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公开(公告)号：US10415540B2
公开(公告)日：2019-09-17
申请号：US15532108
申请日：2015-12-01
摘要： The method allows stabilizing the rotation speed of a hydraulic machine with S-characteristics. It is implemented by means of a control loop feedback system having a controller for calculating an orientation to affect guide vanes of the machine. It includes steps of calculating a set of internal states associated with the operating point of the machine, establishing a linearized transfer function in function of the set of internal states, calculating characteristics parameters of the controller in function of the established transfer function so that the control loop feedback system is stable, measuring the rotation speed of the hydraulic machine, comparing the measured rotation speed with a target rotation speed, and adjusting the orientation affected to the guide vanes so as to reduce the speed difference between the calculated rotation speed and the target rotation speed.
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公开(公告)号：US10297010B2
公开(公告)日：2019-05-21
申请号：US15459701
申请日：2017-03-15
发明人： Zhaoxia Zhang , Kun Tao , Hao Lai , Ming Yan , Han Kang
摘要： A method for reducing grid line artifacts in an X-ray image is disclosed, which includes acquiring an X-ray image by scanning an object, wherein the X-ray image comprises grid line artifacts; decomposing the X-ray image into a high frequency image and a low frequency image, wherein the high frequency image comprises the grid line artifacts; filtering the high frequency image to reduce the grid line artifacts in the high frequency image so as to obtain a filtered high frequency image; and combining the filtered high frequency image with the low frequency image to reconstruct an output image. A system adopting the above method is also disclosed.
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公开(公告)号：US10296296B2
公开(公告)日：2019-05-21
申请号：US15338922
申请日：2016-10-31
摘要： According to some embodiments, system, apparatus and methods are provided comprising a development environment; one or more system components configured to operate within the development environment; a graphical user interface in the development environment that enables a user to: develop at least one model using an arbitrary language, wherein development of the at least one model includes accessing the one or more system components; wherein the development environment includes program code for a platform in the arbitrary language; and an execution model configured to execute the developed model on the platform. Numerous other aspects are provided.
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公开(公告)号：US10290884B2
公开(公告)日：2019-05-14
申请号：US15160032
申请日：2016-05-20
发明人： Yao Chen , Honggang Wang , Yingneng Zhou , Baoming Huang , Ralph Teichmann
IPC分类号： H01M8/04 , H01M8/04537 , H01M8/04746 , H01M8/1007 , H01M8/04298 , H01M8/04858 , H01M8/04992 , H01M8/124
摘要： A fuel cell system is disclosed, which includes a fuel cell stack coupled to a load for providing power, a gas delivery system coupled to the fuel cell stack for providing fuel and oxygen to the fuel cell stack and a control system. The control system includes a forward controller for generating a desired control instruction signal based on a command from the load, and a correction controller for generating a control correction signal to avoid violating operational constraints of the fuel cell stack based on at least one measured signal from the fuel cell system. The control system generates a control signal based on the desired control instruction signal and the control correction signal, and controls the gas delivery system based on the generated control signal to ensure the fuel cell stack is operated within safe operating limits. A method for controlling the fuel cell system is also disclosed.
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公开(公告)号：US10281435B2
公开(公告)日：2019-05-07
申请号：US15102332
申请日：2014-12-12
发明人： Xun Yu , Zheng Huang
摘要： A lifting device, which is configured to lift or drop at least one load bearing mechanism. The lifting device includes a power driving mechanism and multiple lifting mechanisms connecting to the power driving mechanism. The multiple lifting mechanisms march the load bearing mechanism at least from a first height location to a second height location in a rolling manner under a function of a driving force provided by the power driving mechanism. An embodiment of the present invention further discloses an ultrasonic inspection system using the lifting device.
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公开(公告)号：US10280929B2
公开(公告)日：2019-05-07
申请号：US15105627
申请日：2013-12-18
发明人： Vishal Gahlot , Colby Lane Loveless , Mark James
IPC分类号： F04D29/041 , F04D29/06 , F04D1/06 , F04D13/10 , F04D29/047 , E21B43/12 , F04B47/06 , F04D29/44
摘要： A multistage centrifugal pump includes a housing, a rotatable shaft and first and second turbomachinery stages. The first turbomachinery stage includes a first diffuser connected to the housing, a first impeller connected to the rotatable shaft. The second turbomachinery stage includes a second diffuser connected to the housing and a second impeller connected to the rotatable shaft. The multistage centrifugal pump further includes an integral axial load and bearing system that includes at least one diffuser bushing and at least one impeller bearing. The integral axial load and bearing system permits the independent axial movement of the first and second impellers. The integral axial load and bearing system also provides an opposite force to up-thrust and down-thrust produced by the first and second turbomachinery stages.
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公开(公告)号：US10280698B2
公开(公告)日：2019-05-07
申请号：US15332211
申请日：2016-10-24
摘要： A downhole assembly is provided for use in well restimulation, the assembly having a plurality of perforation blocking sleeves each comprising an anchoring device; one or more expandable members secured to an external surface of each of the perforation blocking sleeves; a running tool for transporting the plurality of perforation blocking sleeves and expandable members within a perforated well casing; a running tool driver for moving the running tool, perforation blocking sleeves and expandable members within the well casing; and one or more sensors to detect perforation clusters within the well casing. The anchoring device is used to secure each sleeve over a perforation cluster within the well casing. Each perforation blocking sleeve defines a flow channel in fluid communication with the principal flow channel of the well casing. The running tool is remotely uncoupled from the blocking sleeves in sequence, and the running tool and the running tool driver are retractable through the flow channel of each the perforation blocking sleeves.
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公开(公告)号：US10270246B2
公开(公告)日：2019-04-23
申请号：US15558801
申请日：2016-03-11
发明人： Robin Gupta , Carl Barker , Andrzej Adamczyk
摘要： A method and apparatus for controlling a voltage source converter to energize a DC link. A voltage order generating module generates a voltage order for controlling the voltage source converter to generate a DC voltage on the DC link. An oscillation damping module monitors the DC current flow to determine an indication of current oscillation and the voltage order is based on a voltage reference signal which is modulated by the indication of current oscillation to provide oscillation damping.
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公开(公告)号：US10254270B2
公开(公告)日：2019-04-09
申请号：US15418847
申请日：2017-01-30
IPC分类号： G01N27/02 , G01N33/28 , G01M13/021
摘要： A system includes a resonant sensor in contact with oil within a gearbox of a rotor system, such as a wind turbine, and one or more processors. The sensor includes electrodes and a sensing circuit that generates electrical stimuli having frequencies applied to the oil at different times during a life of the gearbox. The processors receive electrical signals from the resonant sensor representative of impedance responses of the oil to the electrical stimuli. The processors analyze the impedance responses and determine a concentration of a polar analyte in the oil at different times. The processors calculate a degradation value for the gearbox based on the concentration of the polar analyte. Responsive to the degradation value exceeding a designated threshold, the processors at least one of schedule maintenance for the rotor system, provide an alert to schedule maintenance, or prohibit operation of the rotor system until maintenance is performed.
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公开(公告)号：US10253973B2
公开(公告)日：2019-04-09
申请号：US13522733
申请日：2011-01-17
申请人： Volker Schüle , Daniel Zimmer
发明人： Volker Schüle , Daniel Zimmer
IPC分类号： B03C3/017 , F22D1/38 , F23J15/02 , B03C3/02 , F22B37/00 , F22D1/18 , F23J15/06 , F22B1/00 , F23L15/04
摘要： A power plant is suggested with an additional heat transfer between the flue gas that flows through a flue gas line (5) and the feed-water in a feed-water line (19). The claimed arrangement of the first heat exchanger (13) upstream and adjacent to a precipitator (7) leads to a reduced space demand and optimizes dust precipitation as well as the pressure drop of the flue gas.
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