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公开(公告)号：US20250045353A1
公开(公告)日：2025-02-06
申请号：US18630016
申请日：2024-04-09
Applicant: SHANDONG JIAOTONG UNIVERSITY
Inventor： Jiuhong Ruan , Yuhong Xing
IPC: G06F17/17
Abstract: Provided is a secant line approximation method for a nonlinear constraint of a redundant drive system, which relates to the technical field of dynamics control allocation of the redundant drive system. The method includes: first obtaining, based on a control input model for a redundant drive system with any pair of nonlinear constraint components, a closed region of the model that is formed by intersecting a rectangle and an ellipse on a geometric plane; and after dividing the closed region into a union set of rectangles and elliptical triangles, approximating the elliptical triangle based on a combination of rectangles and triangles to obtain an approximation result of the closed region, thereby achieving a linear approximation of the pair of nonlinear constraint components.
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2.发明公开公开(公告)号：US20230149988A1
公开(公告)日：2023-05-18
申请号：US17916946
申请日：2021-01-04
Applicant: SHANDONG JIAOTONG UNIVERSITY
Inventor： Jin LI , Enzhou DI , Miaozhang YU , Shen ZUO , Peng JIANG , Xinzhuang CUI
CPC classification number: B09B3/35 , B09B3/40 , B09B2101/65
Abstract: A geogrid prepared by recycling medical waste and a preparation method therefor, and use in foundation reinforcement. The method includes: recycling medical waste for treatment and processing the medical waste into a crushed material; adding modified filler and processing aids, and selecting high-strength fiber bundles for compounding and melting with the crushed material and pressing and stretching to prepare a geogrid. The medical waste is any combination of one or more used medical plastic products and medical plastic products that expire and are not used. The high-strength fiber bundles are more than one bundle of fiber materials commonly used for manufacturing geogrids on the market. The modified filler is a stabilizer for improving the stability of component materials to heat and light. The processing aids are enhancers for improving the performance of the component materials.
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公开(公告)号：US20220366784A1
公开(公告)日：2022-11-17
申请号：US17611225
申请日：2021-01-07
Applicant: SHANDONG JIAOTONG UNIVERSITY
Inventor： Yajuan GUO
Abstract: A regional dynamic perimeter control method and system for preventing boundary links queuing overflow. The method includes: estimating the number of queuing vehicles of boundary links using a Kalman filtering extension method using traffic flow information, and calculating a maximum of receivable vehicles; dividing the boundary links utilizing an estimated number of each boundary link's queuing vehicles and the maximum number of receivable vehicles obtaining a boundary link set with sufficient storage and a boundary link set with insufficient storage; obtaining a critical accumulation of a region according to a preset Macroscopic Fundamental Diagram (MFD) model of the region, and predicting the estimated region accumulation in a sampling period; and controlling a regional boundary intersection traffic flow operation using a deviation between the predicted and critical accumulation and boundary link sets. Deterioration of regional traffic flow is avoided, and the probability of overflow of boundary links is reduced.
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公开(公告)号：US20210404928A1
公开(公告)日：2021-12-30
申请号：US17297059
申请日：2019-01-29
Applicant: Shandong Jiaotong University
Inventor： Jinxiang FENG , Xingyu GUO , Peng ZHANG , Zhiguang GUAN , Jiwei ZHANG , Qingzhen WU , Qian JIA , Fuguang YANG , Jiuhong RUAN , Huijun WANG , Ying HAN
IPC: G01N3/34
Abstract: The present disclosure provides a total-environment full-scale cyclic accelerated loading experimental system, which pertains to a field of accelerated loading experimental systems. The total-environment full-scale cyclic accelerated loading experimental system includes a rack, and a power mechanism, a chain drive pair, a roller set, a guide rail, etc. installed on the rack. The power mechanism is connected to the roller set through the chain drive pair. The roller set is matched with an annular loading surface of the guide rail. In the present disclosure, in addition to an environmental unit being provided on the rack, modifications are made to structures of the guide rail, the roller set and the chain drive pair as well as connections thereof.
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5.发明申请公开(公告)号：US20240402667A1
公开(公告)日：2024-12-05
申请号：US18640040
申请日：2024-04-19
Applicant: SHANDONG JIAOTONG UNIVERSITY
Inventor： Yuhong Xing , Jiuhong Ruan
IPC: G05B19/02
Abstract: Provided is a method for calculating a control attainable set of a redundant drive system under a linear constraint, which relates to the technical field of dynamics control allocation of the redundant drive system. The method first constructs a control attainable set problem for a redundant drive system under each pair of linear constraint control components, and then classifies boundary surfaces corresponding to a control set into three types of rectangular boundary surfaces and one type of triangular boundary surface. By grouping the boundary surfaces, the method determines a key boundary surface for each group to form a boundary surface set. After removing duplicate boundary surfaces from the boundary surface set, the method calculates a boundary surface of a control attainable set, and finally obtains the control attainable set.
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Patent Agency Ranking
公开(公告)号：US11908321B2
公开(公告)日：2024-02-20
申请号：US17611225
申请日：2021-01-07
Applicant: SHANDONG JIAOTONG UNIVERSITY
Inventor： Yajuan Guo
CPC classification number: G08G1/08 , G08G1/0125 , G08G1/0145 , G08G1/065
Abstract: A regional dynamic perimeter control method and system for preventing boundary links queuing overflow. The method includes: estimating the number of queuing vehicles of boundary links using a Kalman filtering extension method using traffic flow information, and calculating a maximum of receivable vehicles; dividing the boundary links utilizing an estimated number of each boundary link's queuing vehicles and the maximum number of receivable vehicles obtaining a boundary link set with sufficient storage and a boundary link set with insufficient storage; obtaining a critical accumulation of a region according to a preset Macroscopic Fundamental Diagram (MFD) model of the region, and predicting the estimated region accumulation in a sampling period; and controlling a regional boundary intersection traffic flow operation using a deviation between the predicted and critical accumulation and boundary link sets. Deterioration of regional traffic flow is avoided, and the probability of overflow of boundary links is reduced.
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公开(公告)号：US20230241635A1
公开(公告)日：2023-08-03
申请号：US17932513
申请日：2022-09-15
Applicant: ShanDong JiaoTong University
Inventor： Yong FAN , Fuguang YANG , Jiuhong RUAN , Guodong LI
CPC classification number: B05B12/149 , B05B12/004 , B05B15/55
Abstract: The present disclosure belongs to the technical field of mechanical spraying, and a color change block with detection feedback as well as spraying equipment are provided. The color change block with detection feedback comprises a cleaning agent valve module, a color change micro valve module, a mixing pipe module and a turbidity detection module which are connected in sequence. A complete collinear common channel is formed among these modules, and the wall surface of the common channel is a complete plane. The turbidity detection module is further connected to the control module and used for monitoring the turbidity of a medium flowing through the common channel in real time so as to determine whether the medium in the common channel meets a cleaning requirement or not and feed a determination result back to the control module, and then the control module switches other media to form a closed-loop control.
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公开(公告)号：US20220222556A1
公开(公告)日：2022-07-14
申请号：US17609408
申请日：2021-01-07
Applicant: SHANDONG JIAOTONG UNIVERSITY
Inventor： Mengmeng ZHANG , Ji HUANG , Yue YU
Abstract: A road traffic jam early warning method includes: performing characteristic classification according to acquired multi-source traffic data, and constructing a corresponding characteristic membership function, to obtain a first fuzzy weight; applying an expert evaluation method to the multi-source data to construct an artificial membership function, and calculating a second fuzzy weight; performing fuzzy weighted average on the characteristic membership function according to a fused fuzzy weight obtained by fusing the first fuzzy weight and the second fuzzy weight, and performing defuzzification on obtained weighted average membership functions having different characteristic quantities, to obtain fused multi-source traffic data; constructing a road traffic congestion model, and calculating an optimal road traffic congestion index; and acquiring current multi-source traffic data, predicting a current congestion index, and providing, by comparing the current congestion index with the optimal road traffic congestion index, a warning about whether a current road is congested.
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公开(公告)号：US20220134488A1
公开(公告)日：2022-05-05
申请号：US17058008
申请日：2020-05-11
Applicant: SHANDONG JIAOTONG UNIVERSITY
Inventor： Junsheng Meng , Xiaoping Shi , Shaojun Zhang , Mingyu Wang , Bingbing Liu , Mingxuan Chen
Abstract: The disclosure belongs to the technical field of surface coating, and particularly relates to a flux-cored welding wire, a preparation method and use thereof, a porous coating and a preparation method thereof. The disclosure provides a flux-cored welding wire, including a core wire and a sheath, where the core wire includes the following components by mass percentage: 15.0-30.0% of Cr, 1.5-2.5% of Si, 5.0-10.0% of Ni, 1.0-5.0% of TiH2, and Fe as balance; and the sheath is made of steel. Test results of examples show that, the porous coating obtained by supersonic arc spraying the flux-cored welding wire provided by the disclosure has a porosity of up to 46% and a coating adhesive strength of 45 MPa, which are desired.
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10.发明公开公开(公告)号：US20240110345A1
公开(公告)日：2024-04-04
申请号：US17768648
申请日：2021-01-04
Applicant: SHANDONG JIAOTONG UNIVERSITY
Inventor： Jin LI , Guangbo LIU , Fengkun CUI , Xu DONG , Xinzhuang CUI
Abstract: A corrugated pipe connection device for a continuous section at the top of a continuous T-shaped beam bridge pier. The connection device includes a combined steel pipe telescopic device and a corrugated pipe connector, the interiors being hollow; the connector includes a first clamping member for clamping a wall surface of a corrugated pipe; one end of the telescopic device is a second clamping member with the same structure as the first; the other end is a telescopic steel pipe which is telescopic in the length direction; and the telescopic steel pipe is connected to the connector. The device replaces a corrugated pipe between two T-shaped beams, thereby avoiding problems such as breakage and slurry leakage caused by an original construction mode. The device can stretch out and draw back according to a distance between the T-shaped beams, and steel strands can be stranded by means of a stranding machine.
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