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Patent Agency Ranking
公开(公告)号：US20210061249A1
公开(公告)日：2021-03-04
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：US20200231031A1
公开(公告)日：2020-07-23
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: B60K6/365 , B60K6/28 , B60K6/30 , B60K6/387 , B60K6/442 , F16H37/06 , B60K6/26 , B60K6/24 , B60K6/547
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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公开(公告)号：US20230001994A1
公开(公告)日：2023-01-05
申请号：US17853940
申请日：2022-06-30
Applicant: Beijing Institute of Technology
Inventor： Hui LIU , Xiaolei REN , Ziyong HAN , Zhiwei LIU , Quanfu HAN , Yansong GONG
IPC: B62D57/028 , B60K7/00 , B60K1/02 , B25J9/16 , B25J5/00
Abstract: A wheel-leg mechanism is provided. The mechanism comprises a thigh, the upper end of the thigh is movably arranged in a mounting seat for a thigh motor, and is in transmission connection with a thigh motor, and the thigh motor is fixedly provided on one side of the mounting seat for a thigh motor; a shank motor is arranged at the side, away from the thigh motor, of the thigh, a suspension shock absorption system is connected to the shank motor, the shank motor is in transmission connection with a shank by a synchronous belt, the shank is movably connected to the tail end of the thigh, a wheel is movably mounted at the tail end of the shank, and the wheel is in transmission connection with a hub motor; and a braking system is provided on the wheel. A wheel-legged vehicle having the wheel-leg mechanism is further provided.
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公开(公告)号：US20200369288A1
公开(公告)日：2020-11-26
申请号：US16878729
申请日：2020-05-20
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Hui LIU , Hongji SHEN , Shengli LI , Xiaoyu ZHANG , Xiaoxia FENG
Abstract: The present invention discloses a method for constructing linear luenberger observer for vehicle control. The method for constructing linear luenberger observer for vehicle control comprises the following steps: step 1: building a state-space equation of a driving system of a vehicle to judge observability of the driving system; step 2: dividing the state of the driving system into blocks, and reconstructing state components of the driving system to obtain an rewritten state observation equation of the driving system; step 3: introducing transformation into the rewritten state equation of the driving system to obtain an expression equation and an error equation of the Luenberger observer. The linear luenberger observer constructed by the present invention has low implementation difficulty. High-frequency noise in an output signal of a rotational speed sensor is reduced.
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公开(公告)号：US20200369258A1
公开(公告)日：2020-11-26
申请号：US16878709
申请日：2020-05-20
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Hui LIU , Yang LIU , Lijin HAN , Huibin XIN
Abstract: The present invention discloses an ECMS-based PHEV four-drive torque distribution method. The method specifically comprises the following steps: step 1, calculating an equivalent fuel consumption factor according to the residual electric quantity of a power battery; step 2, calculating instantaneous total equivalent fuel consumption rate; step 3, converting all operating torque combinations of an engine, a BSG motor and a rear axle motor into the operating torque of a driving wheel, and determining the operating torque range of each power source according to the operating torque range of the driving wheel; step 4, solving the minimum value of the instantaneous total equivalent fuel consumption rate within the actual operating torque range of each power source; and step 5, taking the operating torque of each power source corresponding to the minimum instantaneous total equivalent fuel consumption rate as the PHEV optimal operating torque for distribution.
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