Patents by Inventor JianGang Lu
JianGang Lu 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: 11931827Abstract: Provided are a laser cutting device and a laser cutting method. The laser cutting device comprises a beam expanding element provided with a plurality of lens sets, wherein optical axes of the plurality of lens sets are located in the same line and each lens set comprises at least one lens; the beam expanding element is configured to convert an incident beam into a first beam; and a spectroscopic element arranged on a light path of an emitted light of the beam expanding element, and wherein the spectroscopic element is configured to convert the first beam into multiple second beams that are annular and spaced apart from each other.Type: GrantFiled: June 22, 2020Date of Patent: March 19, 2024Assignee: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD.Inventors: Huanyin Xin, Zhongqian Li, Hong Chen, Jiangang Lu, Hongjiang Zhang, Jiangang Yin, Yunfeng Gao
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Patent number: 11733657Abstract: The invention discloses a MIMO different-factor compact-form model-free control method with parameter self-tuning. In view of the limitations of the existing MIMO compact-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factor, the invention proposes a MIMO compact-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Meanwhile, parameter self-tuning is proposed to effectively address the problem of time-consuming and cost-consuming when tuning the penalty factors and/or step-size factors.Type: GrantFiled: January 30, 2020Date of Patent: August 22, 2023Assignee: ZHEJIANG UNIVERSITYInventors: Jiangang Lu, Chen Chen
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Patent number: 11592790Abstract: The invention discloses a MIMO different-factor partial-form model-free control method with parameter self-tuning. In view of the limitations of the existing MIMO partial-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factors, the invention proposes a MIMO partial-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Meanwhile, parameter self-tuning is proposed to effectively address the problem of time-consuming and cost-consuming when tuning the penalty factors and/or step-size factors.Type: GrantFiled: January 30, 2020Date of Patent: February 28, 2023Assignee: ZHEJIANG UNIVERSITYInventors: Jiangang Lu, Chen Chen
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Patent number: 11449034Abstract: The invention discloses a MIMO different-factor compact-form model-free control method. In view of the limitations of the existing MIMO compact-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factor, the invention proposes a MIMO compact-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Compared with the existing control method, the inventive method has higher control accuracy, stronger stability and wider applicability.Type: GrantFiled: January 30, 2020Date of Patent: September 20, 2022Assignee: ZHEJIANG UNIVERSITYInventors: Jiangang Lu, Chen Chen
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Patent number: 11449033Abstract: The invention discloses a MIMO different-factor partial-form model-free control method. In view of the limitations of the existing MIMO partial-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factors, the invention proposes a MIMO partial-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Compared with the existing control method, the inventive method has higher control accuracy, stronger stability and wider applicability.Type: GrantFiled: January 30, 2020Date of Patent: September 20, 2022Assignee: ZHEJIANG UNIVERSITYInventors: Jiangang Lu, Chen Chen
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Patent number: 11385606Abstract: The invention discloses a MIMO different-factor full-form model-free control method. In view of the limitations of the existing MIMO full-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factors, the invention proposes a MIMO full-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Compared with the existing control method, the inventive method has higher control accuracy, stronger stability and wider applicability.Type: GrantFiled: January 30, 2020Date of Patent: July 12, 2022Assignee: ZHEJIANG UNIVERSITYInventors: Jiangang Lu, Chen Chen
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Patent number: 11256221Abstract: The invention discloses a MIMO different-factor full-form model-free control method with parameter self-tuning. In view of the limitations of the existing MIMO full-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factors, the invention proposes a MIMO full-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Meanwhile, parameter self-tuning is proposed to effectively address the problem of time-consuming and cost-consuming when tuning the penalty factors and/or step-size factors.Type: GrantFiled: January 30, 2020Date of Patent: February 22, 2022Assignee: Zhejiang UniversityInventors: Jiangang Lu, Chen Chen
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Publication number: 20210162546Abstract: Provided are a laser cutting device and a laser cutting method. The laser cutting device comprises a beam expanding element provided with a plurality of lens wherein optical axes of the plurality of lens sets are located in the same line and each lens set comprises at least one lens; the beam expanding element converts an incident beam into a first beam; and a laser splitting element and the first beam are arranged in an emitting optical path of the beam expanding element, and the laser splitting element converts the first beam into a plurality of second beams spaced from one another. In the laser cutting device, by means of providing the laser splitting element, the first beam is converted into the plurality of second beams, so as to obtain the effect of beam adjustment.Type: ApplicationFiled: June 22, 2020Publication date: June 3, 2021Inventors: Huanyin XIN, Zhongqian LI, Hong CHEN, Jiangang LU, Hongjiang ZHANG, Jiangang YIN, Yunfeng GAO
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Patent number: 10981251Abstract: A method for cutting sapphire comprising a sapphire body and a coating formed on the sapphire body, the method comprising: focusing a first CO2 laser beam the coating via a CO2 focusing assembly to remove the coating with a predetermined thickness extending along a first path; wherein dust and debris generated during removal of the coating are removed while the coating is removed; focusing an ultrafast laser beam on the sapphire body via an optical path shaping assembly to form a plurality of restructuring channels distributed along a second path and penetrating through the sapphire; wherein the second path coincides with the first path; scanning, by the second CO2 laser beam, the sapphire body via a galvanometer focusing assembly, wherein a path of the second CO2 laser beam scanning the sapphire body via a galvanometer focusing assembly coincides with or deviates from the second path, so that the sapphire cracks along the restructuring channels.Type: GrantFiled: June 8, 2016Date of Patent: April 20, 2021Assignee: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTDInventors: Xuerui Yuan, Xiaojun Zhang, Lingtian Diao, Yuguo Peng, Jiangang Lu, Xiao Liu, Guodong Ma, Jiangang Tang, Jiangang Yin, Yunfeng Gao
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Publication number: 20200347838Abstract: An electric oil pump includes a pump housing, a pump rotor assembly, a stator assembly, a motor rotor assembly and an electric control board, the pump housing defining a pump cavity including first cavity and second cavities, the pump rotor assembly arranged in the first cavity, and the stator assembly, the motor rotor assembly and the electric control board arranged in the second cavity. The pump housing includes a first housing having a side wall with inner and outer surfaces, at least a part of the inner surface is in contact with at least a part of an outer wall of the stator assembly, the outer surface is provided with or shaped with a first heat dissipating portion, at least a part of the first heat dissipating portion covers at least a part of an outer circumference of the stator assembly in a circumferential direction of the electric oil pump.Type: ApplicationFiled: June 8, 2018Publication date: November 5, 2020Applicant: Hangzhou Sanhua Research Institute Co., Ltd.Inventors: Jiangang Lu, Zhiwang Wu, Bingjiu Yin, Kai Zhang, Yubin Zhou
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Publication number: 20200300241Abstract: An electric oil pump includes a pump housing, a first rotor assembly, a pump shaft, a second rotor assembly, a stator assembly, and a circuit board assembly. The pump housing includes at least a first housing, a second housing, and a third housing. A first cavity is formed between the first housing and the second housing. A second cavity is formed between the second housing and the third housing. The first rotor assembly is accommodated in the first cavity. The second rotor assembly, the stator assembly, and the circuit board assembly are accommodated in the second cavity. The first cavity and the second cavity are isolated by an isolation portion, such that working media provided therein do not communicate with each other.Type: ApplicationFiled: June 11, 2018Publication date: September 24, 2020Applicant: Hangzhou Sanhua Research Institute Co., Ltd.Inventors: Jiangang Lu, Zhiwang Wu, Bingjiu Yin, Kai Zhang, Yubin Zhou
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Publication number: 20200249643Abstract: The invention discloses a MIMO different-factor partial-form model-free control method with parameter self-tuning. In view of the limitations of the existing MIMO partial-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factors, the invention proposes a MIMO partial-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Meanwhile, parameter self-tuning is proposed to effectively address the problem of time-consuming and cost-consuming when tuning the penalty factors and/or step-size factors.Type: ApplicationFiled: January 30, 2020Publication date: August 6, 2020Inventors: Jiangang LU, Chen CHEN
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Publication number: 20200249636Abstract: The invention discloses a MIMO different-factor compact-form model-free control method with parameter self-tuning. In view of the limitations of the existing MIMO compact-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factor, the invention proposes a MIMO compact-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Meanwhile, parameter self-tuning is proposed to effectively address the problem of time-consuming and cost-consuming when tuning the penalty factors and/or step-size factors.Type: ApplicationFiled: January 30, 2020Publication date: August 6, 2020Inventors: Jiangang LU, Chen CHEN
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Publication number: 20200249658Abstract: The invention discloses a MIMO different-factor partial-form model-free control method. In view of the limitations of the existing MIMO partial-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factors, the invention proposes a MIMO partial-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Compared with the existing control method, the inventive method has higher control accuracy, stronger stability and wider applicability.Type: ApplicationFiled: January 30, 2020Publication date: August 6, 2020Inventors: Jiangang LU, Chen CHEN
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Publication number: 20200249641Abstract: The invention discloses a MIMO different-factor full-form model-free control method. In view of the limitations of the existing MIMO full-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factors, the invention proposes a MIMO full-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Compared with the existing control method, the inventive method has higher control accuracy, stronger stability and wider applicability.Type: ApplicationFiled: January 30, 2020Publication date: August 6, 2020Inventors: Jiangang LU, Chen CHEN
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Publication number: 20200249659Abstract: The invention discloses a MIMO different-factor compact-form model-free control method. In view of the limitations of the existing MIMO compact-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factor, the invention proposes a MIMO compact-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Compared with the existing control method, the inventive method has higher control accuracy, stronger stability and wider applicability.Type: ApplicationFiled: January 30, 2020Publication date: August 6, 2020Inventors: Jiangang LU, Chen CHEN
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Publication number: 20200249642Abstract: The invention discloses a MIMO different-factor full-form model-free control method with parameter self-tuning. In view of the limitations of the existing MIMO full-form model-free control method with the same-factor structure, namely, at time k, different control inputs in the control input vector can only use the same values of penalty factor and step-size factors, the invention proposes a MIMO full-form model-free control method with the different-factor structure, namely, at time k, different control inputs in the control input vector can use different values of penalty factors and/or step-size factors, which can solve control problems of strongly nonlinear MIMO systems with different characteristics between control channels widely existing in complex plants. Meanwhile, parameter self-tuning is proposed to effectively address the problem of time-consuming and cost-consuming when tuning the penalty factors and/or step-size factors.Type: ApplicationFiled: January 30, 2020Publication date: August 6, 2020Inventors: Jiangang LU, Chen CHEN
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Publication number: 20200238442Abstract: The present disclosure relates to a laser cutting field, and in particular to a laser cutting head for cutting hard, brittle products and a laser cutting device for cutting hard, brittle products. The laser cutting head includes a polarizing element, a binary phase element and a focusing element. The polarizing element, the binary phase element and the focusing element are disposed in sequence. The polarizing element, the binary phase element, and the focusing element are structured and configured together such that a laser light is configured to pass through the polarizing element to form a polarizing laser light that is emitted to the binary phase element, the binary phase element modulating phase of the polarizing laser light. A diffractive laser light is formed in a location of the binary phase element, which is emitted to the focusing element.Type: ApplicationFiled: April 1, 2020Publication date: July 30, 2020Inventors: XIAOJUN ZHANG, Xuerui Yuan, Pingping Yu, Jiangang Lu, Jiangang Yin, Yun Feng Gao
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Publication number: 20200200168Abstract: An oil pump includes a pump housing, a pump shaft, and a pump rotor assembly. The pump housing is capable of forming a pump cavity. The pump cavity includes a first cavity and a second cavity. The pump rotor assembly is provided in the first cavity. At least part of the pump shaft is provided in the second cavity. The pump rotor assembly includes a first rotor and a second rotor. The first rotor is capable of rotating the second rotor, and is fixedly connected to the pump shaft. The pump shaft is capable of rotating the first rotor. The first rotor includes a connecting portion. A connecting hole is provided in the connecting portion. At least part of the pump shaft is provided in the connecting hole. At least part of the connecting portion engages with at least part of the pump shaft.Type: ApplicationFiled: June 11, 2018Publication date: June 25, 2020Applicant: Hangzhou Sanhua Research Institute Co., Ltd.Inventors: Jiangang Lu, Zhiwang Wu, Bingjiu Yin, Kai Zhang, Yubin Zhou
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Publication number: 20190118306Abstract: A method for cutting sapphire comprising a sapphire body and a coating formed on the sapphire body, the method comprising: focusing a first CO2 laser beam the coating via a CO2 focusing assembly to remove the coating with a predetermined thickness extending along a first path; wherein dust and debris generated during removal of the coating are removed while the coating is removed; focusing an ultrafast laser beam on the sapphire body via an optical path shaping assembly to form a plurality of restructuring channels distributed along a second path and penetrating through the sapphire; wherein the second path coincides with the first path; scanning, by the second CO2 laser beam, the sapphire body via a galvanometer focusing assembly, wherein a path of the second CO2 laser beam scanning the sapphire body via a galvanometer focusing assembly coincides with or deviates from the second path, so that the sapphire cracks along the restructuring channels.Type: ApplicationFiled: June 8, 2016Publication date: April 25, 2019Applicant: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD.Inventors: Xuerui Yuan, Xiaojun Zhang, Lingtian Diao, Yuguo Peng, Jiangang Lu, Xiao Liu, Guodong Ma, Jiangang Tang, Jiangang Yin, Yunfeng Gao