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：US20200156699A1

公开(公告)日：2020-05-21

申请号：US16627980

申请日：2018-05-23

Applicant: JIANGSU UNIVERSITY

Inventor： Bin TANG ,  Yingqiu HUANG ,  Haobin JIANG ,  Di ZHANG ,  Chaochun YUAN ,  Yingfeng CAI ,  Guoqing GENG ,  Chaofeng PAN ,  Shidian MA ,  Dong CAO ,  Chenhui YIN

IPC: B62D5/04 ,  B62D15/02 ,  G06F30/15 ,  G06F30/20 ,  H02J7/00 ,  B62D3/02 ,  H02J7/34 ,  H02M3/158 ,  G06F119/06

Abstract: An energy dynamic control method for the EPS with hybrid power supply and an energy dynamic control system. Control system collects real-time current of vehicle electric appliances except the steering motor and the super-capacitor and calculates target current of the steering motor according to real-time steering torque and vehicle speed, and determines state of the super-capacitor by comparing rated current of vehicle power supply and sum of the current of vehicle electric appliances and target current of the steering motor. When super-capacitor is in the charging state, charging current is dynamically regulated to make vehicle power supply work in optimal working range, and maximum charging current is limited based on SOC of the super-capacitor. When super-capacitor is in discharging state, discharging current is dynamically regulated to make vehicle power supply work in optimal working range, and maximum discharging current is limited based on SOC of super-capacitor.

公开(公告)号：US20240288055A1

公开(公告)日：2024-08-29

申请号：US18023742

申请日：2022-02-23

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen ZHU ,  Yihan ZHANG ,  Yingfeng CAI ,  Long CHEN ,  Xiaodong SUN ,  Changgao XIA ,  Xiang TIAN ,  Jie SHENG ,  Rui HOU

IPC: F16H47/04 ,  F16H61/66

CPC classification number: F16H47/04 ,  F16H61/66 ,  F16H2200/2007 ,  F16H2200/2048

Abstract: A hybrid transmission device with a mechanical continuously variable transmission and a control method thereof are provided. The device includes an input shaft assembly, a front planetary gear transmission assembly, a rear planetary gear transmission assembly, an output shaft, and a mechanical continuously variable transmission. Single transmission modes and hybrid transmission modes are implemented through combination and engagement/disengagement of brakes and clutches. The device and the method realize free switching among various transmission modes and integrates the single transmission modes and the hybrid transmission modes, thereby increasing the degree of freedom in adjustment and expanding the speed regulation range. Input and output shafts of a front cup wheel and ring disc transmission mechanism and a rear cup wheel and ring disc transmission mechanism are coaxial, so that the structure is compact and intermediate rollers can stably and reliably transmit large torque.

公开(公告)号：US20240200643A1

公开(公告)日：2024-06-20

申请号：US17784675

申请日：2021-06-25

Applicant: JIANGSU UNIVERSITY

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

IPC: F16H47/08 ,  F16H63/30

CPC classification number: F16H47/08 ,  F16H63/3023

Abstract: A gear-hydraulic-rhombic pyramid integrated multi-mode hybrid transmission device includes an input assembly, a hydraulic transmission mechanism, a front planetary gear mechanism, a rhombic pyramid-type continuously variable transmission mechanism, a rear planetary gear mechanism, an output assembly, a clutch assembly, and a brake assembly. The clutch assembly connects an output end of the input assembly to an input end of the hydraulic transmission mechanism and an input end of the front planetary gear mechanism. The clutch assembly connects an output end of the hydraulic transmission mechanism to the front planetary gear mechanism and the rear planetary gear mechanism. The clutch assembly connects the front planetary gear mechanism, the rhombic pyramid-type continuously variable transmission mechanism, the rear planetary gear mechanism, and the output assembly in sequence. 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：US20230287969A1

公开(公告)日：2023-09-14

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

CPC classification number: F16H47/04 ,  F16H61/70

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：US20220145972A1

公开(公告)日：2022-05-12

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: 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.

公开(公告)号：US20210331575A1

公开(公告)日：2021-10-28

申请号：US16627690

申请日：2019-01-24

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen ZHU ,  Yingfeng CAI ,  Long CHEN ,  Changgao XIA ,  Jiangyi HAN ,  Dehua SHI ,  Feng WANG ,  Chaochun YUAN ,  Chaofeng PAN ,  Xing XU

IPC: B60K6/365 ,  B60K6/38 ,  F16H47/04 ,  F16H37/10

Abstract: A continuously variable transmission system for hybrid power multi-mode switching, includes an input component, an output component, a clutch assembly, a brake, a hydraulic transmission assembly and a planetary gear assembly, wherein the input component is connected with the hydraulic transmission assembly, the output component is connected with the planetary gear assembly, the clutch assembly connects the input component and the hydraulic transmission assembly to the planetary gear assembly respectively, and the brake and the clutch assembly provide a transmission ratio for continuous forwarding or backwarding continuously between the input component and the output component. The hydro-mechanical transmission is switched to mechanical transmission by increasing the displacement ratio of the hydraulic transmission assembly linearly or non-linearly.

公开(公告)号：US20210102611A1

公开(公告)日：2021-04-08

申请号：US17042955

申请日：2019-10-23

Applicant: JIANGSU UNIVERSITY

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

IPC: F16H47/04 ,  B60K6/365

Abstract: A hydro-mechanical hybrid transmission device and a control method thereof are provided. The device includes an input shaft, a split mechanism, a mechanical transmission assembly, a hydraulic transmission assembly, and an output shaft, wherein the input shaft is connected, through the split mechanism, to the mechanical transmission assembly and the hydraulic transmission assembly that are connected in parallel, and the mechanical transmission assembly and the hydraulic transmission assembly are both connected to the output shaft. The mechanical transmission assembly includes a front planetary-gear-set assembly and a rear planetary-gear-set assembly. The front planetary-gear-set assembly and the rear planetary-gear-set assembly are connected in series. The control method includes three modes of transmission: pure hydraulic transmission, hydro-mechanical hybrid transmission, and pure mechanical transmission are implemented through combination and engagement/disengagement of gear-shift components.

公开(公告)号：US20250128727A1

公开(公告)日：2025-04-24

申请号：US18858350

申请日：2024-05-28

Applicant: JIANGSU UNIVERSITY

Inventor： Qingchao LIU ,  Shiyu LI ,  Yingfeng CAI ,  Hai WANG ,  Xiaoxia XIONG ,  Long CHEN

IPC: B60W50/14 ,  B60W50/00 ,  G06N3/04

Abstract: The provided is a method and system for trajectory prediction based on Cro-IntentFormer. The method starts by preprocessing vehicle trajectory data collected by sensors to produce raw data suitable for model input. Vehicles are treated as nodes, and the distance between vehicles serves as the basis for determining whether there is an edge between two vehicle nodes. A physical relationship graph is constructed and, along with the raw data, input into a spatio-temporal feature extraction module to obtain the spatio-temporal features of the trajectory. The spatio-temporal feature matrix is then input into an intent prediction module to determine the predicted intentions of the vehicles. Based on the intent information output by the intent prediction module, a semantic relationship graph is reconstructed and input, along with the raw data, into the spatio-temporal feature extraction module to derive the semantic features of the trajectory.

公开(公告)号：US20240190442A1

公开(公告)日：2024-06-13

申请号：US17802143

申请日：2022-01-07

Applicant: JIANGSU UNIVERSITY

Inventor： Yingfeng CAI ,  Chenglong TENG ,  Xiaoxia XIONG ,  Hai WANG ,  Xiaodong SUN ,  Qingchao LIU

IPC: B60W40/09 ,  B60W40/107

CPC classification number: B60W40/09 ,  B60W40/107 ,  B60W2520/105 ,  B60W2540/30

Abstract: Based on a perception of an external environment of an autonomous vehicle, a driving style is recognized according to driving characteristic parameters indicating a driving aggressiveness degree and a mode shift preference, in response to a complexity of an individual driving behavior cognition. After the driving style is recognized, in accordance with group behavior characteristics of the motion bodies in the environment, a time-varying complex dynamical network is established based on a complex network with the motion bodies as nodes and roads as constraints, to serve as a complex environment model of the autonomous vehicle. Finally, the nodes in the complex environment model are parametrically represented to realize the node difference cognition of the complex environment. The nodes in the complex environment model are hierarchized by using an agglomerative algorithm to realize the hierarchical cognition of the complex environment.