公开(公告)号：US20210372512A1

公开(公告)日：2021-12-02

申请号：US15734998

申请日：2020-02-10

Applicant: Jiangsu University

Inventor： Zhen ZHU ,  Yingfeng CAI ,  Long CHEN ,  Xiang TIAN ,  Changgao XIA ,  Falin ZENG ,  Chaochun YUAN ,  Jiajia WANG ,  Xiaodong SUN ,  Dehua SHI

IPC: F16H47/04 ,  F16H9/26 ,  F16H37/08

Abstract: A gear-hydraulic-metal belt integrated multi-mode hydro-mechanical hybrid transmission device includes an input assembly, an output assembly, a metal belt transmission mechanism, a planetary gear assembly, a hydraulic transmission mechanism, a clutch assembly and a brake assembly. The input assembly is connected to the metal belt transmission mechanism, the planetary gear assembly and the hydraulic transmission mechanism. The metal belt transmission mechanism and the hydraulic transmission mechanism are connected to the planetary gear assembly. The planetary gear assembly is connected to the output assembly. The clutch assembly connects the input assembly to the metal belt transmission mechanism and the planetary gear assembly, and connects each of the metal belt transmission mechanism and the hydraulic transmission mechanism to the planetary gear assembly. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input assembly and the output assembly.

公开(公告)号：US20200031188A1

公开(公告)日：2020-01-30

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：US20250020206A1

公开(公告)日：2025-01-16

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: F16H61/70 ,  F16H47/04 ,  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：US20240420487A1

公开(公告)日：2024-12-19

申请号：US18575391

申请日：2023-05-06

Applicant: JIANGSU UNIVERSITY

Inventor： Hai WANG ,  Guirong ZHANG ,  Yingfeng CAI ,  Long CHEN ,  Yicheng LI ,  Qingchao LIU

IPC: G06V20/56 ,  G06V10/26 ,  G06V10/32 ,  G06V10/77 ,  G06V10/776 ,  G06V10/80 ,  G06V10/82

Abstract: A multi-task joint perception network model and detection method for traffic road surface information can simultaneously detect a lane line and a drivable area. A coordinate attention mechanism is integrated into a traditional feature extraction network to ensure that a feature extraction effect is enhanced while a calculated amount is not increased. In a neck network, a dilated convolution residual module is proposed to enhance performance of prediction of details by the network, and a decoder part shares features of the drivable area into lane line detection to enhance a lane line detection effect under complex road conditions. In a training stage, there is provided a alternating optimization training method to improve integral segmentation performance of the model. The multi-task joint perception network model and detection method realizes quite high accuracy and excellent speed performance in a challenging BDD100K dataset.

公开(公告)号：US20240117869A1

公开(公告)日：2024-04-11

申请号：US18013264

申请日：2022-01-10

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen ZHU ,  Lingxin ZENG ,  Yingfeng CAI ,  Long CHEN ,  Yanpeng YANG ,  Dongqing WANG ,  Yulin DENG ,  Xiaodong SUN ,  Xiang TIAN ,  Yong WANG ,  Falin ZENG ,  Chaofeng PAN

IPC: F16H47/04

CPC classification number: F16H47/04 ,  F16H2037/028

Abstract: A continuously variable transmission with both equal-difference output and equal-ratio output includes an input mechanism, a hydraulic transmission mechanism, a planetary-gear-set convergence mechanism, an equal-difference output mechanism, an equal-ratio output mechanism, a clutch assembly, and a brake. The clutch assembly connects an output end of the input mechanism to an input end of the hydraulic transmission mechanism and the planetary-gear-set convergence mechanism and connects an output end of the hydraulic transmission mechanism to the planetary-gear-set convergence mechanism. The clutch assembly connects the planetary-gear-set convergence mechanism to the equal-difference output mechanism and the equal-ratio output mechanism. The clutch assembly connects the equal-ratio output mechanism to the equal-difference output mechanism. A continuously changing transmission ratio between the input mechanism and the equal-difference output mechanism/the equal-ratio output mechanism is provided by adjusting a displacement ratio of the hydraulic transmission mechanism and selectively controlling engagement of the clutch assembly and the brake.

公开(公告)号：US20220373072A1

公开(公告)日：2022-11-24

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：US20210276548A1

公开(公告)日：2021-09-09

申请号：US16626886

申请日：2019-02-20

Applicant: JIANGSU UNIVERSITY

Inventor： Yingfeng CAI ,  Yong ZANG ,  Hai WANG ,  Xiaoqiang SUN ,  Long CHEN ,  Jun LIANG ,  Yicheng LI ,  Dehua SHI ,  Bin TANG

IPC: B60W30/12 ,  B60W30/18 ,  B60W50/02

Abstract: This invention is an extension adaptive lane keeping control method with variable vehicle speed, which is composed of the following steps: S1, establishing a three-degree-of-freedom dynamic model and a preview deviation expression; S2, performing the lane line fitting equation; S3, designing the upper layer ISTE extension controller; including: S3.1, establishing the control index (ISTE) extension sets; S3.2, dividing the control index (ISTE) domain boundaries; S3.3, calculating the control index (ISTE) association function; S3.4, establishing the upper layer extension controller decision; S4, designing the lower layer speed extension controller; S5, designing the lower layer deviation tracking extension controller; including: S5.1, extracting the lower layer deviation tracking extension feature quantity and dividing domain boundaries; S5.2, designing the lower layer extension controller correlation function; S5.3, performing the lower layer measurement mode identification; S5.4, When the front wheel angle of lower layer controller outputs is calculated according to the measurement mode. This invention realizes the adaptive variation of the control coefficient of the extension controller and the boundary range of the constraint domain according to the tracking deviation precision, the speed variation, and the expert knowledge base.

公开(公告)号：US20240219267A1

公开(公告)日：2024-07-04

申请号：US17920053

申请日：2022-02-10

Applicant: JIANGSU UNIVERSITY

Inventor： Wei FAN ,  Zhenqiang CHEN ,  Yingqi XU ,  Yujie SHEN ,  Long CHEN

IPC: G01M99/00 ,  G01H1/00

CPC classification number: G01M99/005 ,  G01H1/003

Abstract: A strong-robustness method for extracting early degradation features of signals and monitoring an operational status of a device is provided. Acquired vibration signal data of a rotating mechanical device is grouped at equal time intervals in a chronological order. Compression conversion is performed on the data, a newly defined function is solved, thereby a performance degradation index of the device is obtained. Data of the device in a normal status is obtained by determining an overall trend of an Exponentially Weighted Moving Average (EWMA) statistic, and a control limit for the EWMA statistic is constructed by using the data in the normal status. The calculated performance degradation index of the device is converted into an EWMA statistic, and the EWMA statistic is compared with the control limit. If the EWMA statistic does not fluctuate about a center line or exceeds the control limit, a monitored state is out of control.

公开(公告)号：US20240038066A1

公开(公告)日：2024-02-01

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：US20220213951A1

公开(公告)日：2022-07-07

申请号：US17296558

申请日：2020-08-04

Applicant: JIANGSU UNIVERSITY

Inventor： Yingfeng CAI ,  Zhen ZHU ,  Long CHEN ,  Changgao XIA ,  Juncheng WANG ,  Xiang TIAN ,  Jiangyi HAN ,  Jianguo ZHU ,  LongHui LAI ,  Xing XU

IPC: F16H47/04 ,  F16H61/00

Abstract: A hydro-mechanical hybrid transmission device with an energy management mechanism includes an input member, a mechanical transmission mechanism, an energy management mechanism, a power output mechanism, an output member, a convergence mechanism, a start mechanism, a hydraulic transmission mechanism, a clutch assembly, and a brake assembly. The clutch assembly connects the input member to the mechanical transmission mechanism, the power output mechanism, and the hydraulic transmission mechanism, and connects the energy management mechanism to the mechanical transmission mechanism and the power output mechanism. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input member and the output member and/or the power output mechanism, between the energy management mechanism and the output member and/or the power output mechanism, and between the energy management mechanism together with the input member and the output member and/or the power output mechanism.