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：US20210372480A1

公开(公告)日：2021-12-02

申请号：US17294433

申请日：2020-07-24

Applicant: JIANGSU UNIVERSITY

Inventor： Xiaodong SUN ,  Zhijia JIN ,  Long CHEN ,  Zebin YANG ,  Weiqi ZHOU ,  Ke LI

IPC: F16C43/00 ,  F16C32/04

Abstract: A method for constructing an active magnetic bearing controller based on a look-up table method includes: building finite element models of an active magnetic bearing to obtain two universal Kriging prediction models in X-axis and Y-axis directions about actual suspension forces being in association with actual displacement eccentricities and actual control currents in the X-axis and Y-axis directions of the active magnetic bearing based on a universal Kriging model; creating two model state tables in the X-axis and Y-axis directions about the actual suspension forces being in association with the actual displacement eccentricities and the actual control currents to construct two look-up table modules with the two built-in model state tables, respectively; and constructing an active magnetic bearing controller by using two fuzzy adaptive PID controllers, two amplifier modules in the X-axis and Y-axis directions, the two look-up table modules, and two measurement modules in the X-axis and Y-axis directions.

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：US20190185083A1

公开(公告)日：2019-06-20

申请号：US15739086

申请日：2016-08-26

Applicant: JIANGSU UNIVERSITY

Inventor： Ruochen WANG ,  Wei YU ,  Renkai DING ,  Long CHEN ,  Jiajia WANG

IPC: B62D65/00 ,  F16F6/00 ,  B60G13/08 ,  B60G13/14 ,  F16F9/19 ,  F16F9/36 ,  F16F9/54 ,  F16F15/03 ,  G06F17/50 ,  H02K5/24 ,  H02K41/03

CPC classification number: B62D65/00 ,  B60G13/08 ,  B60G13/14 ,  B60G2202/25 ,  B60G2204/128 ,  B60G2204/129 ,  B60G2206/41 ,  B60G2206/8201 ,  B60G2500/10 ,  B60G2800/162 ,  F16F6/00 ,  F16F9/19 ,  F16F9/34 ,  F16F9/362 ,  F16F9/54 ,  F16F15/03 ,  F16F2222/06 ,  F16F2222/12 ,  F16F2224/02 ,  F16F2226/048 ,  F16F2228/066 ,  F16F2230/0023 ,  G06F17/5095 ,  H02K5/24 ,  H02K41/033 ,  H02K2213/06

Abstract: Provided is a damper for a semi-active energy regenerative suspension based on hybrid excitation. The damper includes: an upper lifting lug, a dustcover, a lower lifting lug, a hydraulic shock absorber, and a hybrid excitation mechanism, wherein the hydraulic shock absorber is configured to provide a constant viscous damping coefficient, and wherein the hybrid excitation mechanism is configured to generate an adjustable electromagnetic damping force, to transform the vibration energy into electrical energy, and to storage the electrical energy. Also provided is a method for determining the sizes of the damper. The damper which has a simple structure, balances the vibration isolation property and energy regenerative property of the vehicle suspension, and provides a fail-safe function. Furthermore, the method for determining the sizes of the damper is easy and practical to implement, has definite steps and produces drastically optimized results.

公开(公告)号：US20250155017A1

公开(公告)日：2025-05-15

申请号：US18277229

申请日：2022-06-09

Applicant: JIANGSU UNIVERSITY

Inventor： Zhen ZHU ,  Jie SHENG ,  Yingfeng CAI ,  Long CHEN ,  Changgao XIA ,  Haobin JIANG ,  Xiang TIAN ,  Jiangyi HAN ,  Jianguo ZHU ,  Falin ZENG

IPC: F16H61/26 ,  F16H47/04 ,  F16H59/40 ,  F16H61/00 ,  F16H61/40 ,  F16H61/686

Abstract: The present disclosure provides a mechanical-electrical-hydraulic composite transmission device and a control method thereof. The device includes an input shaft assembly, a power-split assembly, a hydraulic transmission assembly, an electrical variable transmission assembly, a mechanical transmission assembly, a power-convergence assembly, and an output shaft. Three types of transmission modes including single transmission modes, power-split composite transmission modes, and power-convergence composite transmission modes are implemented by controlling engagement and disengagement of clutches and a brake. The present disclosure has the following beneficial effects: Free switching between various transmission modes is realized, the requirements of engineering machinery for a transmission device with multiple modes in different working conditions are satisfied, the engine power utilization is improved, and the fuel economy is increased. The shift impact is effectively reduced and the speed ratio adjustment range is expanded. The hydraulic transmission enables quick startup and stable operation and implements speed variation and direction change easily and rapidly without causing impact. The electrical variable transmission has a continuously changing transmission ratio and causes extremely small impact on the mechanism during operation.

公开(公告)号：US20250128720A1

公开(公告)日：2025-04-24

申请号：US18845007

申请日：2023-08-23

Applicant: JIANGSU UNIVERSITY

Inventor： Yingfeng CAI ,  Sikai LU ,  Hai WANG ,  Yubo LIAN ,  Long CHEN ,  Qingchao LIU

IPC: B60W50/08 ,  B60W60/00 ,  G05B13/02 ,  G06N3/092 ,  G06N3/098

Abstract: The provided are a federated reinforcement learning (FRL) end-to-end autonomous driving control system and method, as well as vehicular equipment, based on complex network cognition. An FRL algorithm framework is provided, designated as FLDPPO, for dense urban traffic. This framework combines rule-based complex network cognition with end-to-end FRL through the design of a loss function. FLDPPO employs a dynamic driving guidance system to assist agents in learning rules, thereby enabling them to navigate complex urban driving environments and dense traffic scenarios. Moreover, the provided framework utilizes a multi-agent FRL architecture, whereby models are trained through parameter aggregation to safeguard vehicle-side privacy, accelerate network convergence, reduce communication consumption, and achieve a balance between sampling efficiency and high robustness of the model.

公开(公告)号：US20240201048A1

公开(公告)日：2024-06-20

申请号：US17789523

申请日：2022-02-10

Applicant: JIANGSU UNIVERSITY

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

IPC: G01M13/045

CPC classification number: G01M13/045

Abstract: A generalized autocorrelation method for bearing fault feature extraction under a variable rotational speed condition includes: resampling an original vibration signal in an order domain based on instantaneous phase information by using an order tracking processing method, to greatly weaken a frequency modulation phenomenon; further weakening background noise in consideration of a correlation between a plurality of adjacent fragments by using a generalized autocorrelation method; and controlling an accumulation of periodic disturbances by considering only a correlation between several adjacent signal fragments based on that conventional noise resistant correlation (NRC) methods consider a correlation between all signal fragments and cannot eliminate influence of accumulated periodic disturbances. Compared with the conventional methods, this method overcomes the difficulties caused by mutually restricting signal features, and achieves a better effect.

公开(公告)号：US20220236335A1

公开(公告)日：2022-07-28

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 ,  G01R31/374 ,  G01R31/36 ,  G01R31/388

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：US20210387653A1

公开(公告)日：2021-12-16

申请号：US16342980

申请日：2017-03-29

Applicant: JIANGSU UNIVERSITY

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

IPC: B60W60/00 ,  B60W30/095 ,  G06N7/00

Abstract: A reconstruction method for a secure environment envelope of a smart vehicle based on the driving behavior of a vehicle in front, starting from the simulation of the behavior of a real driver pre-estimating the potential collision risk of the drive area in front, introducing a prediction regarding the driving behavior of the vehicle in front to the environment sensing link of the smart vehicle, reconstructing, on the basis of the prediction result regarding the driving behavior of the vehicle in front, a secure environment envelope of the smart vehicle. The method uses a signal as an observed value, such as the trajectory point sequence of the vehicle in front, the indicators of the vehicle in front, the smart vehicle speed, the relative longitudinal speed of the smart vehicle and the vehicle in front, etc., and predicts the driving behavior of the vehicle in front by means of a hidden markov model (HMM); the method corrects, on the basis of the prediction result about the driving behavior of the vehicle in front, the transverse spacing and the longitudinal spacing between the smart vehicle and the vehicle in front, realizes the reconstruction of a secure environment envelope of a smart vehicle, and further realizes the pre-estimation regarding the potential collision risk of the smart vehicle in the safe drive area, and improves the security of the smart vehicle.