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公开(公告)号：US10940849B1
公开(公告)日：2021-03-09
申请号：US16896461
申请日：2020-06-09
Inventor： Weida Wang , Changle Xiang , Lijin Han , Hui Liu , Donghao Zhang , Chao Yang , Shaoping Lv
Abstract: The present invention discloses a real-time optimization control method for an electro-mechanical transmission system, and relates to the field of electro-mechanical transmission technologies. The method includes the following steps: (S0) starting; (S1) state observation: a current operating state of each element of the electro-mechanical transmission system is obtained through state observation; (S2) dynamic prediction: a feasible operating range of each element of the electro-mechanical transmission system is obtained through dynamic prediction; (S3) optimal decision: an optimal control command of each element in the optimal decision is formulated and executed; (S4) feedback correction: feedback correction is performed on control amounts of a motor and an engine of the electro-mechanical transmission system by using state deviations; and (S5) determining whether feedback correction meets a requirement, and if feedback correction meets the requirement, ending the process, or if feedback correction does not meet the requirement, repeating (S1).
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公开(公告)号：US10850601B2
公开(公告)日：2020-12-01
申请号：US16745953
申请日：2020-01-17
Applicant: Beijing Institute of Technology
Inventor： Lijin Han , Changle Xiang , Hui Liu , Weida Wang , Yue Ma , Lili Xu
IPC: B60K6/36 , B60K6/28 , B60K6/30 , F16H37/06 , B60K6/365 , B60K6/387 , B60K6/442 , B60K6/24 , B60K6/547 , B60K6/26 , B60K6/38
Abstract: The present invention discloses an electromechanical compound transmission device for a tracked vehicle. The electromechanical compound transmission device includes a front transmission mechanism, a power coupling mechanism, an independent drive mechanism, and convergent planetary gearsets arranged on both sides of the power coupling mechanism. The present invention can not only implement driving, steering, and other functions of a vehicle, but also provide sufficient electric energy for a vehicle-mounted device. In other words, a series mode can be adopted to satisfy a torque output requirement, and is mainly used for low and medium-low speed driving, as well as reverse driving and climbing steep slopes; and a series-parallel mode can also be adopted to satisfy requirements of high and medium-high speed driving, and can achieve relatively high transmission efficiency and fuel economy.
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3.发明申请公开(公告)号：US20230054246A1
公开(公告)日：2023-02-23
申请号：US17293841
申请日：2020-07-30
Applicant: Beijing Institute Of Technology
Inventor： Weida Wang , Chao Yang , Jingang Liu , Wei Zhang , Zhongguo Zhang , Changle Xiang
IPC: B60W40/06 , B60W40/105
Abstract: The present invention provides an iterative joint estimation method of vehicle mass and road gradient based on MMRLS and SH-STF, which includes the following steps: establishment of a dynamic model considering steering, MMRLS/SH-STF iterative joint estimation algorithm architecture, improved slope estimation algorithm based on SH-STF. It is an iterative joint estimation method of vehicle mass and road slope based on MMRLS and SH-STF, which is designed reasonably, and the slow-variation characteristics of vehicle mass and the time-varying characteristics of road gradient are analyzed. According to the characteristics of gradual change and time change, based on the longitudinal dynamics model of the vehicle and the steering single-track model, the system identification algorithm of multi-model fusion recursive least squares is used to calculate the vehicle mass, and the noise adaptive strong tracking based on extended Kalman filter is used.
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Patent Agency Ranking
4.发明申请公开(公告)号：US20210107449A1
公开(公告)日：2021-04-15
申请号：US17098372
申请日：2020-11-14
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chao Yang , Weida Wang , Kaijia Liu , Changle Xiang , Muyao Wang , Mingjun Zha , Weiqi Wang
Abstract: A cyber-physical energy optimization control system for a hybrid electric vehicle includes an information layer which is configured to realize vehicle and road condition information collection, hybrid control unit (HCU) threshold optimization and threshold wireless update loading, and an optimized object plug-in hybrid electric bus (PHEB) as a physical layer. A cyber-physical energy optimization control method for a hybrid electric vehicle includes steps of collecting a real-time position of an optimized HEV and road slope information of the real-time position, collecting speed information which reflects traffic conditions on a road section to be optimized, constructing a vehicle model virtual operating platform for threshold optimization through the collected information, quickly optimizing related parameters with a help of efficient optimization algorithms, obtaining best results, and finally sending and loading corresponding parameters to a hybrid control unit (HCU) before the optimized vehicle is about to arrive at the optimized road section.
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公开(公告)号：US11827194B2
公开(公告)日：2023-11-28
申请号：US17313550
申请日：2021-05-06
Applicant: Beijing Institute of Technology
Inventor： Weida Wang , Yanjie Wu , Changle Xiang , Liang Li , Jingang Liu , Zhongguo Zhang , Chao Yang
CPC classification number: B60T13/745 , B60T8/171 , B60T8/885 , B60T13/165 , B60T2270/404 , B60T2270/82 , B60T2270/88
Abstract: Disclosed is a multi-mode electro-hydraulic brake boosting system and a control method thereof. When the boosting system fails, an emergency mechanical braking mode is achieved through structural redundancy, in a normal boosting mode, the system has a general braking mode and an emergency braking mode according to the strength requirements of a brake, and a general brake boosting mode and an emergency active pressurizing mode are controlled, respectively. Accurate boosting can be provided in the general braking process so that the pressure of a brake master cylinder can accurately follow target pressure, pressure buildup of the brake master cylinder can be completed more quickly in the emergency braking process, braking force is output to the maximum extent, the system response time of an emergency braking working condition is shortened, the braking capacity is improved, and traffic accidents are avoided.
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公开(公告)号：US20210347349A1
公开(公告)日：2021-11-11
申请号：US17313550
申请日：2021-05-06
Applicant: Beijing Institute of Technology
Inventor： Weida Wang , Yanjie Wu , Changle Xiang , Liang Li , Jingang Liu , Zhongguo Zhang , Chao Yang
Abstract: Disclosed is a multi-mode electro-hydraulic brake boosting system and a control method thereof. When the boosting system fails, an emergency mechanical braking mode is achieved through structural redundancy, in a normal boosting mode, the system has a general braking mode and an emergency braking mode according to the strength requirements of a brake, and a general brake boosting mode and an emergency active pressurizing mode are controlled, respectively. Accurate boosting can be provided in the general braking process so that the pressure of a brake master cylinder can accurately follow target pressure, pressure buildup of the brake master cylinder can be completed more quickly in the emergency braking process, braking force is output to the maximum extent, the system response time of an emergency braking working condition is shortened, the braking capacity is improved, and traffic accidents are avoided.
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公开(公告)号：US10967730B2
公开(公告)日：2021-04-06
申请号：US16808841
申请日：2020-03-04
Inventor： Weida Wang , Changle Xiang , Yue Ma , Shaoping Lv , Lili Xu
IPC: B60K6/543 , B60K6/365 , B60W30/182 , F16H3/62 , B60K6/442
Abstract: The present invention discloses a method for switching modes of an electromechanical transmission system which includes a clutch CL0, a motor A, a clutch CL1, a brake B1, a motor B and three planet rows K1, K2 and K3. The electromechanical transmission system according to the present invention achieves two different structural modes of EVT1 and EVT2 by changing states of the clutch CL0 and the brake B1. The EVT1 mode is mainly a system running state at a low vehicle speed under a high driving torque demand, and the EVT2 mode is mainly a system driving state at a high vehicle speed under a low driving torque demand. Mode switching without speed difference and power interruption can be achieved by switching vehicle speed selection and reasonable adjustment of engine and motor torque.
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公开(公告)号：US20210031613A1
公开(公告)日：2021-02-04
申请号：US16808841
申请日：2020-03-04
Inventor： Weida WANG , Changle Xiang , Yue Ma , Shaoping Lv , Lili Xu
IPC: B60K6/543 , B60K6/365 , B60K6/442 , B60W30/182 , F16H3/62
Abstract: The present invention discloses a method for switching modes of an electromechanical transmission system which includes a clutch CL0, a motor A, a clutch CL1, a brake B1, a motor B and three planet rows K1, K2 and K3. The electromechanical transmission system according to the present invention achieves two different structural modes of EVT1 and EVT2 by changing states of the clutch CL0 and the brake B1. The EVT1 mode is mainly a system running state at a low vehicle speed under a high driving torque demand, and the EVT2 mode is mainly a system driving state at a high vehicle speed under a low driving torque demand. Mode switching without speed difference and power interruption can be achieved by switching vehicle speed selection and reasonable adjustment of engine and motor torque.
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