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公开(公告)号：US11628405B2
公开(公告)日：2023-04-18
申请号：US17325236
申请日：2021-05-20
申请人： Tongji University
发明人： Zhiwei Wang , Hongyi Han , Ruobin Dai , Tianlin Wang , Chenxin Tian
摘要： A polyamide (PA) nanofiltration (NF) membrane and a preparation method thereof by regeneration from a scrapped microfiltration (MF) membrane are provided. The method adopts a cleaning-repairing-interfacial polymerization upgrading strategy, where, sodium hypochlorite and oxalic acid are used for deeply cleaning a scrapped MF membrane. PDA is used as a repairing agent to construct a reaction platform on the membrane surface, and finally a reaction system of piperazine and trimesoyl chloride (TMC) are used to form a PA NF membrane with a PA active layer. The repairing can construct a coating with a given thickness and prominent hydrophilicity on the membrane surface, which provides favorable base membrane conditions for upgrading and preparing an NF membrane.
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公开(公告)号：US20230080455A1
公开(公告)日：2023-03-16
申请号：US17751681
申请日：2022-05-24
申请人： TONGJI UNIVERSITY
发明人： Hailong YIN , Yiyuan LIN , Zuxin XU
摘要： A grid-based source-tracing method and system for sewage outfalls and a storage medium are provided. The method specifically includes the steps of: dividing a river into multiple reaches; determining monitoring sites according to the divided reaches; acquiring on-line monitoring data of each of the monitoring sites, and calculating soft measurement data; determining a river reach with sewage outfalls according to upstream and downstream soft measurement data; and intensively arranging monitoring sites in the river reach with sewage outfalls to subdivide the river reach with sewage outfalls, thereby determining a position of a sewage outfall. The method divides the river into multiple reaches and performs the grid-based source-tracing for the sewage outfall of the river gradually. In real practice, with online conductivity and water level monitoring data, the method can effectively determine the river reach with sewage outfalls using soft measurement.
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3.发明申请公开(公告)号：US20230043165A1
公开(公告)日：2023-02-09
申请号：US17638191
申请日：2021-08-02
申请人： TONGJI UNIVERSITY
发明人： Xiaojun SHEN
摘要： The present invention relates to an MPC-based hierarchical coordinated control method and device for a wind-hydrogen coupling system. The method comprises the following steps: (1) dividing the wind-hydrogen coupling system into upper-layer grid-connected control and lower-layer electrolytic cell control; (2) controlling grid-connected power to track a wind power prediction curve by adopting an MPC control algorithm for upper-layer grid-connected control, and obtaining an electrolytic cell power control quantity for the lower-layer electrolytic cell control at the same time; (3) dividing operation states of electrolytic cell monomers into four operation states of rated power operation, fluctuating power operation, overload power operation and shutdown; and (4) determining the operation states of various electrolytic cell monomers by adopting a time-power double-line rotation control strategy based on the electrolytic cell power control quantity, thus making the electrolytic cell monomers operate in one of the four operating states in turn.
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公开(公告)号：US11572818B2
公开(公告)日：2023-02-07
申请号：US17214948
申请日：2021-03-29
申请人： TONGJI UNIVERSITY
发明人： Diming Lou , Yinghua Zhao , Piqiang Tan , Yunhua Zhang , Liang Fang , Zhiyuan Hu
摘要： The disclosure relates to a self-adaptive oil spraying control system and method for a biodiesel engine. The control system includes an exhaust pipe, a gas sensor, a control module and an oil sprayer, wherein the exhaust pipe is connected to the oil sprayer, the gas sensor is mounted in the exhaust pipe, and the gas sensor and the oil sprayer are connected to the control module respectively. According to the control method, a main spray advance angle of the engine is subjected to closed-loop control directly through comparison between an idling steady state NOx emission signal and an idling steady state NOx emission value of pure diesel when the engine uses the biodiesel, so that emission of NOx in the exhaust is reduced. Compared with the prior art, the disclosure has the advantages of no need of detecting a biodiesel ratio, high efficiency, good effect and the like.
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公开(公告)号：US20230036097A1
公开(公告)日：2023-02-02
申请号：US17726534
申请日：2022-04-22
申请人： TONGJI UNIVERSITY
摘要： The present application is related to a method for controlling heavy metal scouring pollution in mines by using a humified product, which comprises steps of: (1) carrying out mixed fermentation on sludge and hyperthermophiles to breed polar humified groups, and then carrying out mixed fermentation on the fermented material and a native material of humus precursors to induce massive production of humus until the humus content reaches a required standard; and (2) mixing and maintaining the humified product of the sludge reaching the standard with mine soil polluted by heavy metals to remedy the polluted mine.
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公开(公告)号：US20230027602A1
公开(公告)日：2023-01-26
申请号：US17475182
申请日：2021-09-14
发明人： Yinguang Chen , Xiong Zheng , Xuemeng Zhang , Jing Zhou , Meirou Wu , Chen Wang , Wenquan Ruan , Hengfeng Miao , Mingxing Zhao
摘要： The present invention provides a method of enhancing continuous directional high-value biological conversion of an urban wet garbage open system. The method includes wet garbage crushing, low-energy consumption hydrolysis, continuous conversion of organic components of wet garbage into short-chain fatty acid, continuous directional conversion of other components of short-chain fatty acid into acetic acid, separation and microbial reflux of acetic acid, and the like. In this method, by crushing wet garbage, performing low-energy consumption hydrolysis, and seeding acclimatized activated sludge, two stages of anaerobic fermentations are carried out to firstly convert organic components of the wet garbage continuously into short-chain fatty acid, and then continuously and directionally convert other components of short-chain fatty acid into acetic acid, so as to realize continuous directional high-value biological conversion of the urban wet garbage in an open system without adding pure microbes and a large amount of chemicals.
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公开(公告)号：US20220389708A1
公开(公告)日：2022-12-08
申请号：US17830241
申请日：2022-06-01
申请人： Tongji University
发明人： Huanjun JIANG , Haozuo WANG , Liusheng HE
摘要： A novel function-recoverable prefabricated seismic shear wall structure with replaceable components, which includes main structural components, connecting components and replaceable components. All components are connected by bolts or pins. The connections can provide sufficient strength to effectively connect adjacent upper and lower wall panels, or wall panel and coupling beam, together. The replaceable components are installed in the bottom region of the wall and coupling beams, which provide sufficient bearing capacity and stiffness for the building structure under service loads and dissipate seismic energy under the earthquake. The damage concentrates on the replaceable components which could be easily replaced after a strong earthquake so that the function of the building structure could be quickly restored. In addition, the replaceable components with different energy-dissipation mechanisms facilitate the shear wall structure to have multiple seismic fortification lines, and improve the seismic performance of the building structure.
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公开(公告)号：US11486690B2
公开(公告)日：2022-11-01
申请号：US17132831
申请日：2020-12-23
申请人： TONGJI UNIVERSITY
摘要： A digital sensor for pre-warning of multistage breakage-triggered deformation threshold includes first tension rods, second tension rods, an RFID chip, and a brittle fracture module; the brittle fracture module includes a bottom plate and a plurality of resistors, where two ends of the bottom plate are fixed to the first and second tension rods, and the plurality of resistors forming a lumped parallel circuit are parallelly arranged on the bottom plate; the RFID chip is connected to two ends of the lumped parallel circuit. Strength of the middle cross section of the bottom plate is reduced in the way. The bottom plate will be fractured by being tensioned when the first tension rods and the second tension rods move away from each other with the deformation of the tension members. The resistors are connected into the lumped parallel circuit through brittle wires with different preset slack amounts.
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公开(公告)号：US20220332323A1
公开(公告)日：2022-10-20
申请号：US17639593
申请日：2020-09-25
申请人： TONGJI UNIVERSITY
发明人： Bo LENG , Da JIN , Xing YANG , Lu XIONG , Zhuoping YU
IPC分类号： B60W40/068 , G06K9/62
摘要： A method for adaptive estimation of a road surface adhesion coefficient for a vehicle with complex excitation conditions taken into consideration comprises the following steps: 1) designing an estimator according to a single-wheel dynamics model of a vehicle, and estimating a longitudinal tire force and a road surface peak adhesion coefficient under longitudinal excitation; 2) designing an estimator according to a two-degree-of-freedom kinematic model of the vehicle, and estimating a tire aligning moment and a road surface peak adhesion coefficient under excitation of a lateral force; and 3) determining an excitation condition met by the vehicle according to a vehicle state parameter, performing fuzzy inference to obtain limits achievable by current longitudinal and lateral tire forces, and designing a fusion observer to fuse estimation results. The method achieves favorable robustness, improves real-time capability, and can be performed quickly and accurately.
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公开(公告)号：US20220327388A1
公开(公告)日：2022-10-13
申请号：US17562001
申请日：2021-12-27
申请人： TONGJI UNIVERSITY
发明人： Hong Chen , Qiang Meng , Lin Zhang , Haoqi Hu , Bin Li
摘要： The disclosure relates to a method for real time optimization and parallel computing of model prediction control based on a computing chart, comprising the following steps: building a prediction model of a system state amount and building a target function of a system; building a parallel computing architecture for model prediction control of a prediction model and the target function and employing a triggering parallel computing method by the parallel computing architecture to synchronously compute the prediction model and the target function; and solving and computing a gradient with a manner of back propagation and using a gradient descent method to optimize a control amount of the system and realize real time optimal control of the system. Compared with the prior art, the present disclosure greatly improves a computing efficiency, ensures real time property of a model prediction controller, and extends application fields of model prediction control.
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