公开(公告)号：US20240288066A1

公开(公告)日：2024-08-29

申请号：US18440656

申请日：2024-02-13

Applicant: BEIHANG UNIVERSITY

Inventor： Peng DONG ,  Junqing LI ,  Xiangyang XU ,  Shuhan WANG ,  Yanfang LIU ,  Wei GUO

IPC: F16H61/04 ,  G06N20/00

CPC classification number: F16H61/0437 ,  G06N20/00 ,  F16H2061/0459

Abstract: The present invention provides a gearshift overlap control system and a control method for improving vehicle dynamic response; the control system includes a gearshift progress calculation module: the gearshift progress calculation module is capable of calculating a gearshift progress in real time; a clutch control module: the clutch control module is capable of executing a first power-on downshift control and starting to perform a second power-on downshift control when a set second power-on downshift in a corresponding gearshift progress is requested; and an iterative learning control module: the iterative learning control module is capable of automatically adjusting a first on-coming clutch control pressure and a first off-going clutch control pressure in the first power-on downshift by means of monitoring the overshoot of the gearshift progress.

公开(公告)号：US20230213409A1

公开(公告)日：2023-07-06

申请号：US18083440

申请日：2022-12-16

Applicant: BEIHANG UNIVERSITY

Inventor： Peng DONG ,  Shumiao ZUO ,  Jiadong SHENG ,  Xiangyang XU ,  Peter Tenberge ,  Yanfang LIU ,  Shuhan WANG ,  Wei GUO ,  Yan CHENG

IPC: G01M13/04 ,  F16H57/08

CPC classification number: G01M13/04 ,  F16H57/082 ,  F16H2057/085

Abstract: A device for testing a needle roller bearing of a planet gear set consists of two identical helical planet gear sets, a piston, an end cover, a spindle, and can simulate the actual operating condition of a needle roller bearing of the planet gear set; the rotating speed difference between an inner raceway and an outer raceway of the needle roller bearing is determined by adjusting the rotating speed of a sun gear and a planet carrier; the load on the needle roller bearing includes a centrifugal load and a radial load, and the centrifugal acceleration and the centrifugal load are determined by adjusting the rotating speed of the planet carrier; a method of determining the radial load by adjusting the hydraulic pressure difference of hydraulic chambers at both ends of the piston, generating a tangential force to load the planet gear, and balancing the radial load of the bearing.

公开(公告)号：US20240331462A1

公开(公告)日：2024-10-03

申请号：US18600731

申请日：2024-03-10

Applicant: BEIHANG UNIVERSITY

Inventor： Xiangyang XU ,  Junwei ZHAO ,  Peng DONG ,  Yanfang LIU ,  Shuhan WANG ,  Wei GUO

IPC: G07C5/08 ,  F16H61/00 ,  F16H61/02

CPC classification number: G07C5/0808 ,  F16H61/0202 ,  F16H2061/009

Abstract: A configuration evaluation method and a platform for electromechanical coupling transmission of hybrid electric vehicles, includes an energy flow transfer path evaluation module for evaluating the energy flow transfer path, an electromechanical coupling transmission dynamic performance evaluation module for evaluating the dynamic performance of electromechanical coupling transmission, an electromechanical coupling transmission economic efficiency evaluation module for evaluating the economic efficiency of electromechanical coupling transmission, an electromechanical coupling transmission driving cycle adaptability evaluation module for evaluating the driving cycle adaptability of electromechanical coupling transmission, a component feature parameter rationality evaluation module for evaluating the rationality of component feature parameters, a structure and cost evaluation module for evaluating the structure and cost, and a comprehensive evaluation module for performing a comprehensive evaluation.