-
公开(公告)号：US11708619B2
公开(公告)日：2023-07-25
申请号：US16796542
申请日：2020-02-20
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Peng Yin , Yuren Lu , Jianfeng Song , Peilu Li , Dezhi Li , Zhaowei Miao
CPC classification number: C21D1/04 , B23P9/04 , C21D10/00 , G10K15/043 , B23P2700/01
Abstract: The present disclosure relates to a method for reducing and homogenizing residual stress of a component, which comprises: detecting stress value(s) of regulation portion(s) of the component; placing the component in a container containing a fluid medium so as to immerse the component in the fluid medium; emitting, by an acoustic wave generator, an elastic wave to the fluid medium in a manner of emitting towards the regulation portion(s) of the component, and determining an emitting period of time and a frequency of the elastic wave based on the stress value(s); returning to the step S1 when the emitting period of time has elapsed, until the stress value(s) is stable. The method and the device solve the problems that it is difficult to reduce and homogenize the residual stress on high-precision machined components, complex structural components, thin-walled structural components, and low-stiffness components.
-
公开(公告)号：US11698636B2
公开(公告)日：2023-07-11
申请号：US17801804
申请日：2020-05-09
Applicant: Beijing Institute of Technology
Inventor： Xuechao Chen , Zhangguo Yu , Qiang Huang , Zhifa Gao , Runming Zhang , Zhenyuan Fu , Junyao Gao
IPC: G05D1/00 , B62D57/032 , G05D1/02
CPC classification number: G05D1/0088 , B62D57/032 , G05D1/027 , G05D1/0212 , G05D1/0246 , G05D1/0257 , G05D2201/0217
Abstract: A foothold position control system and method for a biped robot are provided. 1) A feasible collision-free path is planned by using a path planning algorithm; 2) an available foothold area of a swing foot is determined according to step-length constraints, movement capabilities, foot sizes, and center offsets of a biped robot; and 3) fuzzy processing is performed to determine a specific foothold position of the biped robot. Selection of suitable foothold positions on both sides of a path when a biped robot executes specific walking actions after finishing path planning is realized. The foothold position control system and method has the advantages of being simple and easy to implement, having low computational load and high speed, being capable of exerting extreme movement capabilities of different biped robots, enabling more flexible movement of the biped robots, and so on.
-
公开(公告)号：US11673278B2
公开(公告)日：2023-06-13
申请号：US17035231
申请日：2020-09-28
Applicant: Beijing Institute of Technology
Inventor： Qiang Huang , Wu Zhang , Donglin Qiu , Zhangguo Yu , Xingzhong Liu
CPC classification number: B25J19/0054 , B25J9/102 , B25J17/00
Abstract: The present disclosure provides a robot joint member, a dynamic joint and a robot with a heat dissipation structure. The joint member has a hollow barrel structure disposed to sleeve a heat source component, and a plurality of phase change heat dissipation units; the phase change heat dissipation unit comprises a phase change working medium, a capillary material and a sealed phase change cavity; heat dissipation auxiliary ribs are arranged on a periphery of the barrel wall of the joint member and a side of the phase change heat dissipation unit away from the heat source component; and the heat dissipation auxiliary ribs define a plurality of gas flow channels with cross sections gradually reduced along a gas flow direction. The joint member has can quickly eliminate the heat accumulation of the joint power source, and can keep a compact structure of the dynamic joint of the robot.
-
公开(公告)号：US20230068869A1
公开(公告)日：2023-03-02
申请号：US17880652
申请日：2022-08-04
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： PENGWAN CHEN , YANSONG GUO , QIANG ZHOU , RUI LIU
IPC: C22F3/00
Abstract: In a method for preparing a gradient hardened titanium alloy. A steel momentum block and a cleaned titanium alloy plate are sequentially placed into a steel base with a through hole from bottom to top, a cross sectional size of the through hole is matched with cross sectional sizes of the steel momentum block and the titanium alloy plate, and a height of the through hole is matched with a total thickness of the steel momentum block and the titanium alloy plate. An explosive frame is fixed on a top edge of the steel base, a high explosion velocity explosive with an explosion velocity of 7000 m/s or more pressed into a plate-shaped structure is placed in the explosive frame, and detonation is caused at one end of a top surface of the explosive to perform impact treatment on the titanium alloy plate, thereby obtaining the gradient hardened titanium alloy.
-
25.发明申请公开(公告)号：US20220317437A1
公开(公告)日：2022-10-06
申请号：US17617318
申请日：2021-02-08
Applicant: Beijing Institute of Technology
Inventor： Qun HAO , Xuemin CHENG , Yao HU , Xu CHANG
Abstract: A method for controlling a deformable mirror surface shape based on a radial primary function processes samples of a neural network training set, obtains elements of the neural network training set, characterizes the complex surface shape of the deformable mirror in each sample by using a radial primary function, takes characterization parameters of the surface shape in the each sample as an input of a neural network, and trains the neural network by taking a voltage of each piezoelectric ceramic corresponding to the complex surface shape as a corresponding output of the neural network. Training times of the neural network are consistent with a number of the samples. Finally, the trained neural network is obtained to verify the training effect of the neural network. According to the characterization parameters of the required surface, the neural network is used to control the deformable mirror to generate the required surface.
-
Patent Agency Ranking
公开(公告)号：US20220306157A1
公开(公告)日：2022-09-29
申请号：US17280390
申请日：2020-07-13
Applicant: Beijing Institute of Technology
Inventor： Chao Sun , Jianghao Leng
Abstract: Disclosed are a vehicle-mounted camera gimbal servo system and a control method. The vehicle-mounted camera gimbal servo system includes a camera tri-axial gimbal and a servo control apparatus. The camera tri-axial gimbal includes a pitch motor, a roll motor, a yaw motor, a roll arm (1), a pitch arm (4), a yaw arm (5), a gimbal top (7), a camera (11), a pitch-axis bearing (12), and a counterweight block (13); the pitch motor includes a pitch motor stator (2) and a pitch motor rotor (3); the yaw motor includes a yaw motor stator (6) and a yaw motor rotor (8); the roll motor includes a roll motor stator (9) and a roll motor rotor (10); the servo control apparatus includes an inertial measurement unit, a three-dimensional modeling control unit, an angular velocity loop control unit, and an angular displacement loop control unit.
-
公开(公告)号：US11374466B2
公开(公告)日：2022-06-28
申请号：US17035264
申请日：2020-09-28
Applicant: Beijing Institute of Technology
Inventor： Qiang Huang , Wu Zhang , Donglin Qiu , Xuechao Chen , Qiang Chen
Abstract: The present disclosure provides a motor stator and a motor. The motor stator comprises a core; windings wound on the core; and a three-dimensional fitted winding inner groove embedding structure which is a cage-type structure having ribs and ends, the ribs being embedded in grooves between the windings, and the ends being connected to the ribs and cover ends of stator windings; both of the rib and the end of the inner groove embedding structure comprise nonmagnetic heat-conducting glue layers and a phase-change material layer interposed as an interlayer between the heat-conducting glue layers. According to the present disclosure, the heat of each part of the motor stator can be quickly conducted, so as to rapidly reduce the temperature, quickly eliminate the instantaneous temperature peak, and improve the temperature gradient equilibrium of each part.
-
公开(公告)号：US11364642B2
公开(公告)日：2022-06-21
申请号：US16856010
申请日：2020-04-22
Applicant: Beijing Institute of Technology
Inventor： Qiang Huang , Junyao Gao , Chunlei Zhang , Weimin Zhang , Xuechao Chen , Dingkui Tian
Abstract: The present disclosure provides a waist joint of humanoid robot and a humanoid robot. The waist joint comprise: tile-shaped structural members, connection members, and substrates. The first end of the first connection member is slidably connected with the first end of the first tile-shaped structural member, and the first end of the second connection member is slidably connected with the second end of the first tile-shaped structural member; one side surface of the first substrate is slidably connected with the first end of the second tile-shaped structural member, and one side surface of the second substrate is slidably connected with the second end of the second tile-shaped structural member; the second end of the first connection member is connected with the third end of the second tile-shaped structural member, and the second end of the second connection member is connected with the fourth end of the second tile-shaped structural member.
-
公开(公告)号：US11349167B1
公开(公告)日：2022-05-31
申请号：US17621742
申请日：2021-03-19
Inventor： Mingming Dong , Liang Liang , Yu Zhang
IPC: H01M12/08 , H01M8/04276 , H01M8/0438 , H01M8/0444
Abstract: Embodiments of the invention relate to an open metal-air fuel cell system capable of uninterrupted supply power, which relates to the field of metal-air fuel cell stacks and comprises a sensing subsystem, a controller, a circulating filtration subsystem, an electrolyte solution tank and several open metal-air fuel cell units. Open metal-air fuel cell units are sequentially arranged within the electrolyte solution tank, and each open metal-air fuel cell unit is connected with each other in parallel. An air electrode of the open metal-air fuel cell unit has a tank structure, and the trough structure has a concave surface upwards. The sensing subsystem is arranged within the electrolyte tank. The electrolyte solution tank is connected with a circulating filtration subsystem. The controller is used for controlling a circulating flow of the circulating filtration subsystem depending on electrolyte solution temperature information collected by the sensing subsystem.
-
公开(公告)号：US11320405B2
公开(公告)日：2022-05-03
申请号：US16684900
申请日：2019-11-15
Applicant: BEIJING INSTITUTE OF TECHNOLOGY
Inventor： Chunguang Xu , Yuren Lu , Dezhi Li , Peng Yin
Abstract: The present disclosure provides a non-destructive detecting method for weld residual stress and a probe using the same, in the above method, detecting is performed by an ultrasonic detecting probe in contact with a detected portion of a workpiece to be detected, wherein when the weld residual stress of an intersecting curve weld bead of surfaces of cylinders is detected, for the same position of the intersecting curve weld bead, one of the residual stress of an axial direction of the cylinders and the residual stress of a circumferential direction of the cylinders is detected as a principal stress. For the surface of the cylinder at one side of the intersecting curve weld bead, the detecting of the weld residual stress of the surface of the cylinder can be realized only by using an ultrasonic detecting probe having one type of curved surface.
-
-
-
-
-
-
-
-
-
Search Results
317
records
(took 0.027 seconds)
