Patents by Inventor Weihua Wang
Weihua Wang 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).
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Patent number: 10199943Abstract: Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.Type: GrantFiled: May 5, 2017Date of Patent: February 5, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yuan Lin, Zhiqiang Sun, Weihua Wang, Lieyi Fang
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Publication number: 20180069479Abstract: Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.Type: ApplicationFiled: September 21, 2017Publication date: March 8, 2018Inventors: YUAN LIN, ZHIQIANG SUN, WEIHUA WANG, LIEYI FANG
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Patent number: 9825533Abstract: Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.Type: GrantFiled: May 4, 2015Date of Patent: November 21, 2017Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yuan Lin, Zhiqiang Sun, Weihua Wang, Lieyi Fang
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Publication number: 20170279362Abstract: Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.Type: ApplicationFiled: May 5, 2017Publication date: September 28, 2017Inventors: YUAN LIN, ZHIQIANG SUN, WEIHUA WANG, LIEYI FANG
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Patent number: 9764951Abstract: A method for preparing a magnesium-based hydrogen storage material, includes: a Mg—Ce—Ni family amorphous alloy is prepared by a rapid cooling process; the amorphous alloy is pulverized, so as to obtain a amorphous powder; the amorphous alloy is activated, so as to obtain a MgH2—Mg2NiH4—CeH2.73 family nanocrystalline composite; the abovementioned composite is carried out a hydrogen absorption and desorption cycle, then the composite is placed in a pure Ar atmosphere for passivation, finally, the passivated composite is oxidized, so as to obtain a MgH2—Mg2NiH4—CeH2.73—CeO2 family nanocrystalline composite.Type: GrantFiled: December 20, 2013Date of Patent: September 19, 2017Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGYInventors: Min Zhu, Huaijun Lin, Liuzhang Ouyang, Hui Wang, Jiangwen Liu, Weihua Wang, Deqian Zhao
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Publication number: 20170184473Abstract: A rail vehicle collision test rig used for a collision test on a tested vehicle is provided, and includes: a track configured to support and guide the tested vehicle; a small vehicle configured to push the tested vehicle; a drive motor configured to drive the small vehicle to advance and arranged at a first end of the track; a first rotating hub arranged at the first end of the track and connected to the drive motor; a brake motor configured to brake the small vehicle; a second rotating hub arranged at the second end of the track and connected to the brake motor; a connecting rope wound on the first rotating hub and the second rotating hub; a detector configured to detect a velocity and a position of the tested vehicle; and a controller connected to the detector and is allowed to be in communication with the detector.Type: ApplicationFiled: October 27, 2015Publication date: June 29, 2017Applicant: CRRC QINGDAO SIFANG CO., LTD.Inventors: Zhixiang LIU, Wanjing WANG, Zhiqiang ZHANG, Yiping CHEN, Weihua WANG
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Patent number: 9692306Abstract: Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.Type: GrantFiled: January 26, 2015Date of Patent: June 27, 2017Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yuan Lin, Zhiqiang Sun, Weihua Wang, Lieyi Fang
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Publication number: 20160329818Abstract: System and method for regulating an output of a power conversion system. An example system controller includes a signal generator and a modulation and drive component. The signal generator is configured to receive at least a first signal indicating a magnitude of an input voltage received by a primary winding of a power conversion system and receive a second signal indicating a magnitude of a primary current flowing through the primary winding, and generate a third signal. The modulation and drive component is configured to receive at least the third signal, generate a drive signal based on at least information associated with the third signal, and output the drive signal to a switch to affect the primary current.Type: ApplicationFiled: April 13, 2016Publication date: November 10, 2016Inventors: Yuan Lin, Weihua Wang, Xiuhong Zhang, Lieyi Fang
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Publication number: 20160194201Abstract: A method for preparing a magnesium-based hydrogen storage material, includes: a Mg—Ce—Ni family amorphous alloy is prepared by a rapid cooling process; the amorphous alloy is pulverized, so as to obtain a amorphous powder; the amorphous alloy is activated, so as to obtain a MgH2—Mg2NiH4—CeH2.73 family nanocrystalline composite; the abovementioned composite is carried out a hydrogen absorption and desorption cycle, then the composite is placed in a pure Ar atmosphere for passivation, finally, the passivated composite is oxidized, so as to obtain a MgH2—Mg2NiH4—CeH2.73—CeO2 family nanocrystalline composite.Type: ApplicationFiled: December 20, 2013Publication date: July 7, 2016Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGYInventors: Min ZHU, Huaijun LIN, Liuzhang OUYANG, Hui WANG, Jiangwen LIU, Weihua WANG, Deqian ZHAO
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Publication number: 20160190935Abstract: Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.Type: ApplicationFiled: January 26, 2015Publication date: June 30, 2016Inventors: Yuan Lin, Zhiqiang Sun, Weihua Wang, Lieyi Fang
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Publication number: 20160190937Abstract: Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.Type: ApplicationFiled: May 4, 2015Publication date: June 30, 2016Inventors: Yuan Lin, Zhiqiang Sun, Weihua Wang, Lieyi Fang
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Patent number: 9379624Abstract: System and method for regulating an output of a power conversion system. An example system controller includes a signal generator and a modulation and drive component. The signal generator is configured to receive at least a first signal indicating a magnitude of an input voltage received by a primary winding of a power conversion system and receive a second signal indicating a magnitude of a primary current flowing through the primary winding, and generate a third signal. The modulation and drive component is configured to receive at least the third signal, generate a drive signal based on at least information associated with the third signal, and output the drive signal to a switch to affect the primary current.Type: GrantFiled: December 20, 2012Date of Patent: June 28, 2016Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yuan Lin, Weihua Wang, Xiuhong Zhang, Lieyi Fang
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Patent number: 9201075Abstract: Colorimetric and fluorometric methods are disclosed for the rapid, accurate, selective, and inexpensive detection of homocysteine, or of homocysteine and cysteine, or of cysteine. The methods may be employed with materials that are readily available commercially. The novel methods are selective for homocysteine, for cysteine, or for total homocysteine and cysteine, and do not cross-react substantially with chemically-related species such as glutathione. The homocysteine-selective method does not have substantial cross-reactivity to the very closely related species cysteine. The cysteine-selective method does not have substantial cross-reactivity to the very closely related species homocysteine. The methods may be used, for example, in a direct assay of human blood plasma for homocysteine levels.Type: GrantFiled: April 27, 2005Date of Patent: December 1, 2015Assignee: Board of Supervisors of Louisiana State University And Agricultural and Mechanical CollegeInventors: Robert M. Strongin, Weihua Wang, Oleksandr Rusin, Nadia N. St. Luce, Jorge O. Escobedo Cordova
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Publication number: 20140250360Abstract: A system and method include receiving multiple modified versions of a parent document, wherein the parent document and each of the modified versions contain code to display or define underlying information therein. The system and method also include comparing each of the multiple modified versions to the parent document to determine changes made to resulting information of the parent document by modified versions, and displaying to a user the changes made to the resulting information in an end-user type display.Type: ApplicationFiled: May 28, 2004Publication date: September 4, 2014Applicant: Macromedia, Inc.Inventors: Yizhen Jiang, Weihua Wang, Mark Wineman
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Publication number: 20130059350Abstract: A construct containing a gene operably linked to a promoter having activity in cyanobacteria, and vector and cyanobacterium comprising such construct for increasing the yield of fatty alcohols in cyanobacterium is provided.Type: ApplicationFiled: August 24, 2012Publication date: March 7, 2013Applicant: SHELL OIL COMPANYInventors: Xuefeng LU, Qianqian GAO, Weihua WANG, Hui ZHAO
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Patent number: 8016956Abstract: The present invention concerns a Ce-base amorphous metallic plastics being CeaAlbMc, in which 55?a?75, 5?b?25, 10?c?25, and a+b+c=100; said M is Co, Cu or Ni. Otherwise the metallic plastics could be CedAleCufZg, in which 55?d?75, 5?e?15, 15?f?25, 0.01?g?10, and d+e+f+g=100; said Z is one element selected from Co, Fe, Hf, Mg, Mo, Nb, Sc, Ta, Ti, W, Zn and Zr. The metallic plastic could also be CehAliCujNik, in which 55?h?75, 5?i?15, 15?j?25, 0.01?k<5, and h+i+j+k=100. The Ce-base amorphous metallic plastic has a low glass-transition temperature and a wide super-cooling liquid phase area, therefore possesses a high thermal stability. The material could be deformed, shaped and imprinting worked into desired amorphous alloy articles as thermoplastic plastics at a very low temperature.Type: GrantFiled: April 7, 2006Date of Patent: September 13, 2011Assignee: Institute of Physics, Chinese Academy of SciencesInventors: Bo Zhang, Deqian Zhao, Mingxiang Pan, Weihua Wang
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Patent number: 7994108Abstract: An aqueous-based composition and process for removing hardened photoresist and/or bottom anti-reflective coating (BARC) material from a microelectronic device having same thereon. The aqueous-based composition includes at least one chaotropic solute, at least one alkaline base, and deionized water. The composition achieves high-efficiency removal of hardened photoresist and/or BARC material in the manufacture of integrated circuitry without adverse effect to metal species on the substrate, such as copper, and without damage to low-k dielectric materials employed in the microelectronic device architecture.Type: GrantFiled: January 9, 2006Date of Patent: August 9, 2011Assignee: Advanced Technology Materials, Inc.Inventors: David W. Minsek, Weihua Wang, David D. Bernhard, Thomas H. Baum, Melissa K. Rath
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Publication number: 20100291689Abstract: A group of water-soluble salophene-lanthanide complexes and other salophene-metal complexes are useful for purposes including: (i) detecting neutral carbohydrates at physiologically-relevant pH, (ii) the selective detection of gangliosides, and (iii) the selective detection of lysophosphatidic acid (LPA) in the presence of phosphatidic acid. The selective detection of LPA is useful in diagnosing ovarian and other cancers.Type: ApplicationFiled: March 14, 2007Publication date: November 18, 2010Applicants: BOARD OF SUPERVISORS OF LOUISIANA STATE UNIVERSITY & AGRICULTURAL AND MECHANICAL COLLEGE, INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Robert M. Strongin, Onur Alptürk, Oleksandr Rusin, Sayo O. Fakayode, Jorge O. Escobedo Cordova, Weihua Wang, Isiah M. Warner, William E. Crowe, Vladimir Král
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Publication number: 20100118139Abstract: A portable device to detect the spin of table tennis ball is invented. The device helps a user to figure out the spin of a coming table tennis ball during a table tennis game. It is composed of a camera lens to acquire sequential images, an image processing chip to extract features of the table tennis ball and to calculate the direction and strength of the spin, and a mechanism to inform the user about the spin through certain methods. One kind of the product design for the device, is to embed an integrated module into a pair of normal glasses. The integrated module consists of a mini camera lens, an image processing chip, a button battery and switch. The output of the module controls the LED lights located inside the frame of the glasses. For example of 8 points LED, the positions of 0, 3, 6, and 9 o'clock correspond to top spin, right spin, back spin, and left spin, respectively (refer FIG. 1 through FIG. 4).Type: ApplicationFiled: July 19, 2008Publication date: May 13, 2010Inventors: Yuming Huang, Wanduan Huang, Ailian Wang, Yuzhu Huang, Yuling Huang, Yujian Huang, Weihua Wang
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Publication number: 20100012003Abstract: The security class or burglary resistant capability of a safe is determined by the safe's weakest parts: combinations lock, key lock, keyboard, LCD screen, card reader, fingerprint scanner, etc (referred as weak parts below). The results of an attack to the safe include opening safe door, digging holes on safe door or body, or dysfunction of the above weak parts. The corresponding consequences are: Objects deposited inside the safe are stolen or destroyed. Even if those objects stay intact, the safe owner is no longer able to operate the safe. A new design method about safe is disclosed in this invention. The new safe has no weak parts on its surface. It's obvious that weak parts are easier to destroy than safe door and body, which is why they are called weak parts. For safes without weak parts on their surface, these weak parts (in user's hand or inside safe) are not so easy to be attacked on. The GSA class or UL Certification is improved for the new safe.Type: ApplicationFiled: July 19, 2008Publication date: January 21, 2010Inventors: Yuming Huang, Wanduan Huang, Ailian Wang, Yuzhu Huang, Yuling Huang, Yujian Huang, Weihua Wang