公开(公告)号：US12234909B2

公开(公告)日：2025-02-25

申请号：US18276264

申请日：2022-02-23

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen Zhu ,  Yihan Zhang ,  Yingfeng Cai ,  Long Chen ,  Changgao Xia ,  Xiaodong Sun ,  Xiang Tian ,  Rui Hou ,  Jie Sheng

IPC: F16H47/04 ,  F16H61/70 ,  F16H61/00

Abstract: A hydro-mechanical series and parallel transmission device and a control method thereof are provided. The device includes an input shaft assembly, a hydraulic transmission assembly, a planetary gear transmission assembly, an intermediate gear transmission assembly, and an output shaft assembly. Switching among a hydraulic transmission mode, a mechanical transmission mode, and a hydro-mechanical composite transmission mode is implemented through combination and engagement/disengagement of clutches and brakes. The hydro-mechanical series transmission is used to expand the speed regulation range of the hydraulic transmission and is combined with the hydraulic transmission to meet the requirements on precision and the speed regulation range. The requirements of low-power and high-power operations are met through combination of the hydro-mechanical series and parallel transmissions. Multiple transmission modes are formed to adapt to the working conditions of startup, operation, and transfer.

公开(公告)号：US11614151B2

公开(公告)日：2023-03-28

申请号：US17623932

申请日：2020-08-04

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen Zhu ,  Yingfeng Cai ,  Long Chen ,  Xiang Tian ,  Juncheng Wang ,  Changgao Xia ,  Jiangyi Han ,  Feng Wang ,  Xing Xu ,  Dehua Shi

IPC: F16H47/04 ,  F16H61/00

Abstract: A power split and power convergence combined hydro-mechanical hybrid transmission device includes an input member, a power split mechanism, a mechanical transmission mechanism, a power convergence mechanism, an output member, a hydraulic transmission mechanism, a clutch assembly, and a brake assembly. The input member is connected to the power split mechanism, the power convergence mechanism is connected to the output member, and the clutch assembly connects an output end of the power split mechanism to an input end of the mechanical transmission mechanism and an input end of the hydraulic transmission mechanism and connects an input end of the power convergence mechanism to an output end of the mechanical transmission mechanism and an output end of the hydraulic transmission mechanism. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input member and the output member.

公开(公告)号：US11600758B2

公开(公告)日：2023-03-07

申请号：US16959035

申请日：2019-03-19

Applicant: JIANGSU UNIVERSITY

Inventor： Ruochen Wang ,  Ding Luo ,  Wei Yu ,  Weiqi Zhou ,  Long Chen

IPC: H01L35/32 ,  G01R21/06 ,  H01L35/10 ,  G01R31/26

Abstract: The present invention discloses an asymmetrical PN junction thermoelectric couple structure and its parameter determination method. By changing the structural parameters of p-type semiconductor or n-type semiconductor, the current generated by p-type semiconductor is equal to the current generated by the n-type semiconductor, so that the high-efficiency output of PN junction thermoelectric couple can be realized. Meanwhile, the present invention provides a method for determining the parameters of PN junction based on the numerical solution method. Finally, the optimal size parameters of PN junction are obtained.

公开(公告)号：US11359707B2

公开(公告)日：2022-06-14

申请号：US17274440

申请日：2020-02-26

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen Zhu ,  Yingfeng Cai ,  Long Chen ,  Changgao Xia ,  Xiang Tian ,  Jiajia Wang ,  Falin Zeng ,  Xiaodong Sun ,  Dehua Shi ,  Xing Xu

IPC: F16H47/04

Abstract: A hydro-mechanical transmission device with a dual-clutch transmission includes an input mechanism, a pump-controlled motor mechanism, an odd-numbered gear transmission mechanism, an even-numbered gear transmission mechanism, an output mechanism, and a jackshaft. The input mechanism is connected to the odd-numbered gear transmission mechanism and the even-numbered gear transmission mechanism that are connected in parallel, and is connected to an input end of the pump-controlled motor mechanism. An output end of the pump-controlled motor mechanism is connected, through the jackshaft, to the odd-numbered gear transmission mechanism and the even-numbered gear transmission mechanism that are connected in parallel, and is connected to the output mechanism. Switching among hydraulic transmission, hydro-mechanical transmission, and mechanical transmission modes between the input mechanism and the output mechanism is implemented by controlling combination and engagement/disengagement of clutches and a brake.

公开(公告)号：US10574164B2

公开(公告)日：2020-02-25

申请号：US15748926

申请日：2016-08-17

Applicant: Jiangsu University

Inventor： Huawei Zhou ,  Guohai Liu ,  Jinghua Ji ,  Wenxiang Zhao ,  Qian Chen ,  Long Chen

IPC: H02P21/14 ,  H02P25/064 ,  B60K1/00 ,  H02P29/024 ,  H02P21/00 ,  H02P29/032 ,  H02P21/22 ,  H02P25/22 ,  H02P27/04

Abstract: The invention proposes a fault-tolerant field-oriented control method of five-phase interior permanent-magnet fault-tolerant linear motor (IPM-FTLM) with two nonadjacent short-circuit phase faults. Firstly, the extended Clark transformation matrix can be obtained according to the principle that magnetic motive force (MMF) keeps constant before and after the two-phase open-circuit faults, the constraint that the sum of healthy phase currents is zero and the adjacent two-phase current amplitude is equal. The back electric motive force (EMF) can be estimated by the transposed matrix. The nonlinear strong coupling system becomes the first-order inertia system when using the internal mode controller, the first-order inertia feed-forward voltage compensator and back-EMF observer, as the motor is with fault. Then, according to the principle that the sum of MMF of the healthy phase short-circuit compensation currents and two phases short-circuit fault currents is zero, the short-circuit compensation voltage can be obtained, and then these voltages add vector-controller output voltages, respectively. The invention not only restrains the thrust force fluctuation caused by two nonadjacent short-circuit phase faults, but also more importantly keeps the same dynamic and steady performance as the normal conditions, and also it has the constant switching frequency of voltage source inverter.

公开(公告)号：US11862016B1

公开(公告)日：2024-01-02

申请号：US18026835

申请日：2022-08-04

Applicant: JIANGSU UNIVERSITY

Inventor： Yingfeng Cai ,  Sikai Lu ,  Long Chen ,  Hai Wang ,  Chaochun Yuan ,  Qingchao Liu ,  Yicheng Li

IPC: G08G1/08

CPC classification number: G08G1/08

Abstract: A multi-intelligence federated reinforcement learning (FRL)-based vehicle-road cooperative control system and method at the complex intersection use a vehicle-road cooperative control framework based on the Road Side Unit (RSU) static processing module and the vehicle-based dynamic processing module. The historical road information is supplied by the proposed RSU module. The Federated Twin Delayed Deep Deterministic policy gradient (FTD3) algorithm is proposed to connect the federated learning (FL) module and the reinforcement learning (RL) module. The FTD3 algorithm transmits only neural network parameters instead of vehicle samples to protect privacy. Firstly, FTD3 selects only specific networks for aggregation to reduce the communication cost. Secondly, FTD3 realizes the deep combination of FL and RL by aggregating target critic networks with smaller Q-values. Thirdly, RSU neural network participates in aggregation rather than training, and only shared global model parameters are used.

公开(公告)号：US11773954B1

公开(公告)日：2023-10-03

申请号：US18025653

申请日：2022-02-24

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen Zhu ,  Jie Sheng ,  Yingfeng Cai ,  Long Chen ,  Xiaodong Sun ,  Xiang Tian ,  Changgao Xia ,  Yihan Zhang ,  Rui Hou

IPC: F16H47/04 ,  F16H61/70 ,  F16H39/00 ,  F16H61/66

CPC classification number: F16H47/04 ,  F16H61/70 ,  F16H61/705 ,  F16H39/00 ,  F16H61/66 ,  F16H2200/2012 ,  F16H2702/02

Abstract: A multi-mode hydro-mechanical hybrid transmission device includes an input member, a hydraulic transmission mechanism, a mechanical transmission mechanism, a convergence mechanism, an output member, a clutch assembly, and a brake assembly. The clutch assembly connects an output end of the input member to an input end of the hydraulic transmission mechanism, the mechanical transmission mechanism, and the convergence mechanism. The clutch assembly connects an output end of the hydraulic transmission mechanism to the convergence mechanism. The clutch assembly connects the mechanical transmission mechanism to the convergence mechanism. The convergence mechanism is connected to the output member. Continuously changing transmission ratios are provided between the input member and the output member by adjusting a displacement ratio of the hydraulic transmission mechanism and selectively controlling engagement of the clutch assembly and the brake assembly.

公开(公告)号：US11584184B2

公开(公告)日：2023-02-21

申请号：US16491879

申请日：2017-09-01

Applicant: Jiangsu University

Inventor： Ruochen Wang ,  Yuchen Qian ,  Xiangpeng Meng ,  Zeyu Sun ,  Jian Xie ,  Long Chen

IPC: B60G17/018 ,  B60G17/0195

Abstract: A control method for hybrid electromagnetic suspension. The method provides four modes for hybrid electromagnetic suspension: a comfort mode, a sport mode, a combined mode, and an energy feedback mode. A driver can switch between the four modes as desired. For the comfort, sport, and combined modes, hybrid control is adopted, and two sub-modes are provided: an active control mode and a semi-active control mode. A switching condition between the two sub-modes is determined by using a novel parameter Cact and comparing the same against a maximum equivalent electromagnetic damping coefficient Ceqmax of a linear motor. The present invention solves the problem of achieving a balance between suspension comfort and tire traction, and meets the demands of different operating conditions and users by enabling manual mode switching. In addition, the hybrid control is employed to solve the problems of high energy consumption of active suspension and limited control performance of semi-active suspension, thus ensuring good kinematic performance of automobile suspension while reducing energy consumption. Furthermore, the energy feedback mode is designed to enable the suspension to perform energy recovery, meeting demands of energy conservation and emission reduction.

公开(公告)号：US11474159B2

公开(公告)日：2022-10-18

申请号：US17571599

申请日：2022-01-10

Applicant: JIANGSU UNIVERSITY

Inventor： Limei Wang ,  Sibing Qiao ,  Xiuliang Zhao ,  Dong Lu ,  Ruochen Wang ,  Ying Xu ,  Ying Zhang ,  Chaofeng Pan ,  Zhigang He ,  Yingfeng Cai ,  Long Chen

IPC: G01R31/392 ,  G01R31/388 ,  G01R31/374 ,  G01R31/36

Abstract: A battery State of Health estimation method based on a standard sample and a dual-embedded decoupling includes the steps of extracting significant characteristic peaks of the standard sample, mechanism parameter calibration of the standard sample, and on-line State of Health estimation of the test battery. The battery State of Health estimation method expounds the dual coupling relationship between temperature and aging on the characteristic peak voltage of Incremental Capacity curve from the perspective of impedance characteristic mechanism analysis, and proposes a method eliminating the voltage deviation caused by the most temperature-sensitive charge transfer resistance based on the “standard sample” to realize the decoupling of the first layer. Further, when the Solid Electrolyte Interface film resistance affected by the aging and temperature coupling conforms to a linear relationship as a whole, the embedded decoupling can be realized by establishing the relation function between the linear relationship coefficient and temperature.

公开(公告)号：US11313447B1

公开(公告)日：2022-04-26

申请号：US17430733

申请日：2020-08-04

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen Zhu ,  Yingfeng Cai ,  Long Chen ,  Juncheng Wang ,  Changgao Xia ,  Jiangyi Han ,  Xing Xu ,  Dehua Shi ,  Lei Dou ,  Jiajia Wang

IPC: F16H37/08 ,  F16H47/04 ,  F16H61/00

Abstract: A power-split hydro-mechanical hybrid transmission system with an automatic adjustment function includes an input member, a hydraulic transmission mechanism, a split mechanism, a convergence mechanism, an output member, a clutch assembly, and a brake assembly. The clutch assembly connects the input member to an input end of the split mechanism, connects an output end of the split mechanism to an input end of the hydraulic transmission mechanism and an input end of the convergence mechanism, and connects an output end of the hydraulic transmission mechanism to the output member. An output end of the convergence mechanism is connected to the output member. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input member and the output member. The power-split hydro-mechanical hybrid transmission system enables multi-mode continuously variable transmission and has energy reuse and emergency support functions.