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.

公开(公告)号：US20210356024A1

公开(公告)日：2021-11-18

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 ,  F16H3/00 ,  F16H37/08 ,  F16H61/08

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：US20210323394A1

公开(公告)日：2021-10-21

申请号：US17276157

申请日：2020-02-26

Applicant: JIANGSU UNIVERSITY

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

IPC: B60K6/365 ,  B60K6/48 ,  B60K6/547

Abstract: A multi-pump driven single-motor hydro-mechanical hybrid transmission device includes an input shaft, a planetary gear split mechanism, a hydraulic transmission system, a planetary gear convergence mechanism, and an output shaft. The input shaft is connected to the hydraulic transmission system and the planetary gear convergence mechanism through the planetary gear split mechanism. The hydraulic transmission system and the planetary gear convergence mechanism are both connected to the output shaft. The hydraulic transmission system includes a multi-pump driving mechanism, a fixed displacement motor mechanism, and a hydraulic transmission output mechanism. The multi-pump driving mechanism is connected to the fixed displacement motor mechanism. The fixed displacement motor mechanism is connected to the planetary gear convergence mechanism and is connected to the output shaft through the hydraulic transmission output mechanism.

公开(公告)号：US20210245597A1

公开(公告)日：2021-08-12

申请号：US17050427

申请日：2019-12-04

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen ZHU ,  Yingfeng CAI ,  Long CHEN ,  Changgao XIA ,  Jiangyi HAN ,  Xiang TIAN ,  Xiaodong SUN ,  Longhui LAI ,  Dehua SHI ,  Chaochun YUAN

IPC: B60K6/365 ,  F16H47/04

Abstract: A hydro-mechanical hybrid transmission device and a control method thereof, including an input shaft, a split mechanism, a hydraulic transmission assembly, a mechanical transmission assembly, a convergence mechanism, and an output shaft, wherein the input shaft is connected, through the split mechanism, to the hydraulic transmission assembly and the mechanical transmission assembly, wherein the hydraulic transmission assembly and the mechanical transmission assembly are connected in parallel, and the hydraulic transmission assembly and the mechanical transmission assembly are each connected to the output shaft through the convergence mechanism. In the hydro-mechanical hybrid transmission device, planetary gear structures are combined with engagement/disengagement of brakes and clutches, to implement switching of power split and convergence structural forms.

公开(公告)号：US20190263399A1

公开(公告)日：2019-08-29

申请号：US16342974

申请日：2017-03-29

Applicant: JIANGSU UNIVERSITY

Inventor： Youguo HE ,  Chaochun YUAN ,  Long CHEN ,  Haobin JIANG ,  Yingfeng CAI ,  Hai WANG

IPC: B60W30/095 ,  B60W50/00 ,  G05D1/02 ,  G05D1/00

Abstract: Provided is an intelligent vehicle safety driving envelope reconstruction method on the basis of integrated spatial and dynamic characteristics. Starting from simulating an actual driver's estimation of potential collision risks in the forward driving area, a prediction result of a front vehicle driving behavior is introduced to an environment perception link of the intelligent vehicle; on the basis of the prediction result of the front vehicle driving behavior, a safety driving envelope of the intelligent vehicle is reconstructed by integrating spatial and dynamic characteristics (a safety environment envelope reconstruction and a stable control envelope reconstruction), so as to improve the safety and stability of intelligent vehicle. First, based on the prediction of the front vehicle driving behavior, a lateral and a longitudinal distance between the intelligent vehicle and the front vehicle are corrected, to realize the envelop reconstruction of the safety environment of the intelligent vehicle and to improve the safety of intelligent vehicle. Then, on the basis of the reconstructed safety environment envelope and an dynamical model of the intelligent vehicle, the stable control envelope of the intelligent vehicle is reconstructed, so as to improve the stability of the intelligent vehicle.

公开(公告)号：US20190197344A1

公开(公告)日：2019-06-27

申请号：US16070078

申请日：2017-06-08

Applicant: JIANGSU UNIVERSITY

Inventor： Yingfeng CAI ,  Lei DAI ,  Hai WANG ,  Xiaoqiang SUN ,  Long CHEN ,  Haobin JIANG ,  Xiaobo CHEN ,  Youguo HE

IPC: G06K9/46 ,  G06K9/00 ,  G06K9/52

CPC classification number: G06K9/4676 ,  G06K9/00791 ,  G06K9/00798 ,  G06K9/522 ,  G06T7/11 ,  G06T2207/30256

Abstract: The present invention belongs to the field of machine vision. A saliency-based method for extracting a road target from a night vision infrared image is disclosed. The method combines saliencies of the time domain and the frequency domain, global contrast and local contrast, and low level features and high level features, and energy radiation is also considered to be a saliency factor; thus, the object of processing is an infrared image and not the usual natural image. The extraction of a salient region is performed on the raw natural image on the basis of energy radiation, and the obtained extraction result if the salient region is more accurate and thorough, and the contour of a target in the salient region is clearer.