公开(公告)号：US20230032319A1

公开(公告)日：2023-02-02

申请号：US17477638

申请日：2021-09-17

Applicant: Harbin Institute of Technology

Inventor： Jiubin Tan ,  Yang Yu ,  Jian Shi

IPC: G02B27/00 ,  G02B17/08 ,  G02B26/08 ,  G02B27/30 ,  G02B27/28 ,  G01B11/26

Abstract: The disclosure belongs to the technical field of precision test and measurement, and provides a two-dimensional photoelectric autocollimation method and device based on wavefront measurement and correction. According to the disclosure, a link of wavefront measurement and correction of a reference light path is added to a traditional autocollimator measuring method. By using wavefront distortion information of the reference light path in the instrument and driving a deformable mirror to compensate for phase distortion of a beam, the link realizes measurement and control on aberration of the optical system of the autocollimator and improves the imaging quality and spot positioning accuracy of the optical system, thereby improving the angle measurement accuracy of the autocollimator. At the same time, by introducing the link, the autocollimator has the ability to resist interference from the external environment, so that the resolution and stability of angle measurement of the autocollimator are further improved. The method makes the traditional autocollimator have a nano-radian order (5×10−9 rad, that is 0.001″) angle resolution and a sub-microradian order (10−7 rad, that is 0.02″) angle measurement accuracy. The disclosure has the technical advantage of realizing angle measurement with high resolution, high accuracy and high stability under the same conditions, and has the abilities to resist environmental disturbances and compensate for errors caused by the disturbances.

公开(公告)号：US11480490B2

公开(公告)日：2022-10-25

申请号：US16375117

申请日：2019-04-04

Applicant: Harbin Institute of Technology

Inventor： Chuanzhi Sun ,  Jiubin Tan ,  Yongmeng Liu

IPC: G01M1/12 ,  G01M1/10 ,  G01M1/20 ,  G06N3/08 ,  G06N7/00

Abstract: The present invention provides a large-scale high-speed rotary equipment measuring and intelligent learning assembly method and device based on vector minimization geometry center, mass center, the center of gravity and the center of inertia, belonging to the technical field of mechanical assembly. The method includes the steps of establishing a four-parameter circular profile measuring model for a single stage of rotor, simplifying the established four-parameter circular profile measuring model for the single stage of rotor, and establishing a four-target optimization model of the geometry center, mass center, the center of gravity and the center of inertia of multiple stages of rotors based on the angular orientation mounting position of each stage of rotor. The device include a base, an air flotation shaft system, an aligning and tilt regulating workbench, precise force sensors, a static balance measuring platform, an upright column, a lower transverse measuring rod, a lower telescopic inductive sensor, an upper transverse measuring rod and an upper lever type inductive sensor.

公开(公告)号：US10145683B2

公开(公告)日：2018-12-04

申请号：US15307300

申请日：2015-03-31

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Pengcheng Hu ,  Jiubin Tan ,  Jiahao Guo

IPC: G01C9/18 ,  G01C9/20 ,  G01C9/00 ,  G01C9/06

Abstract: A method for measuring a dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates. An annular coplanar capacitance measuring head of a sensor unit consists of four quarter round metal plates and four quarter circular-ring-shaped metal plates, the eight metal plates are coplanar and concentric with one another, and a quarter round metal plate and a quarter circular-ring-shaped metal plate corresponding to the same sector angle form a capacitor. Two annular coplanar capacitance measuring heads are arranged on two round insulating substrates, the two round insulating substrates are used as two bottom surfaces of a cylindrical container, the cylindrical container is transversely arranged, and an insulating liquid equal to ½ volume of the cylindrical container is injected into the cylindrical container in a sealing manner. Potential leads extract potentials of the sixteen metal plates and are connected to an input end of a capacitance measuring unit, and the capacitance measuring unit is connected to a dip measuring unit. When the cylindrical container tilts, the relative positions of the two annular coplanar capacitance measuring heads and the insulating liquid are changed, and a dip angle value can be calculated by measuring the change of a capacitance value. Also disclosed is a device for measuring a dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates.

公开(公告)号：US10060723B2

公开(公告)日：2018-08-28

申请号：US15112179

申请日：2014-12-25

Applicant: Harbin Institute of Technology

Inventor： Jiwen Cui ,  Kunpeng Feng ,  Junying Li ,  Jiubin Tan

IPC: G01B11/00 ,  G01B5/012 ,  G01B11/16 ,  G01D5/353

CPC classification number: G01B11/007 ,  G01B5/012 ,  G01B11/18 ,  G01D5/35316 ,  G01D5/3538

Abstract: A method and equipment based on multi-core fiber Bragg grating (FBG) probe for measuring structures of a micro part are provided. The provided method relates to how to accomplish measuring structures of a micro part by transforming two or three-dimensional contact displacements into spectrum shifts of the multi-core FBG probe, and to reconstruct the structure geometry of a micro part. The provided equipment can be used to bring the spherical tip of the multi-core FBG probe into contact with a micro part, to determine coordinates of contact points, and to reconstruct the structure geometry of a micro part. The provided method and equipment feature high sensitivity, low probing force, high inspecting aspect ratio and immunity to environment interference.

公开(公告)号：US09686892B2

公开(公告)日：2017-06-20

申请号：US15118820

申请日：2014-12-16

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Jiubin Tan ,  Zhengang Lu

IPC: H05K9/00 ,  G02B5/18

CPC classification number: H05K9/0094 ,  G02B5/1866 ,  G02B27/0018 ,  G02B27/46 ,  G02B2207/121 ,  H05K9/0086

Abstract: Optical windows based on a multi-period master-slave nested ring array of concentric rings are suited for electromagnetic shielding. A metal grid of the ring array has basic rings, concentric sub-ring pairs, secondary sub-rings, filling rings, concentric modulation ring pairs, and modulation sub-rings. Basic rings and concentric modulation ring pairs form a two-dimensional orthogonal array. External rings of concentric modulation ring pairs are externally tangentially connected to basic rings. Concentric sub-ring pairs and filling rings are arranged within basic rings, secondary sub-rings are arranged within concentric sub-ring pairs, and modulation sub-rings are arranged within concentric modulation ring pairs. Where rings are tangentially connected, wires overlap or metal ensures reliable electrical connections between connected rings, thus all rings are conductive. The metal grid structure significantly reduces non-uniformity of grid high-order diffracted light intensity distribution, causing stray light distribution caused by diffraction to be more uniform and imaging to be less affected.

公开(公告)号：US09618331B2

公开(公告)日：2017-04-11

申请号：US15101905

申请日：2014-12-31

Applicant: Harbin Institute Of Technology

Inventor： Jiwen Cui ,  Junying Li ,  Kunpeng Feng ,  Jiubin Tan

IPC: G01J4/00 ,  G01B11/00 ,  G01B5/012 ,  G01B11/16

CPC classification number: G01B11/007 ,  G01B5/012 ,  G01B11/18

Abstract: A method and equipment based on detecting the polarization property of a polarization maintaining fiber (PMF) probe for measuring structures of a micro part are provided. The provided method relates to how to accomplish measuring structures of a micro part by transforming two or three-dimensional contact displacements into polarization property changes of the PMF probe, and how to reconstruct the structure geometry of a micro part. The provided equipment can be used to bring the spherical tip of the PMF probe into contact with a micro part, to determine coordinates of contact points, and to reconstruct the structure geometry of a micro part. The provided method and equipment feature high sensitivity, low probing force, high inspecting aspect ratio and immunity to environment interference.

公开(公告)号：US09429209B2

公开(公告)日：2016-08-30

申请号：US14421409

申请日：2014-02-19

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Jiubin Tan ,  Junning Cui ,  Lei Wang

IPC: F16M13/00 ,  F16F15/03 ,  H02K41/035 ,  G01B7/004 ,  G01D5/20 ,  F16F15/00

CPC classification number: F16F15/03 ,  F16F15/002 ,  F16F15/0275 ,  G01B7/004 ,  G01D5/20 ,  H02K41/0354

Abstract: A magnetically suspended and plane-drove vibration isolator with zero stiffness comprises an upper mounting plate, a lower mounting plate and a main body. A sleeve of the main body is lubricated and supported against the lower mounting plate by a magnetically suspended planar motor. A piston cylinder fitted in the sleeve is lubricated against the sleeve by a cylindrical air bearing surface. The angle degree of freedom between the upper mounting plate and the lower mounting plate is decoupled by a spherical air bearing. A position close-loop control system is formed to precisely control the relative position between the upper mounting plate and the lower mounting plate.

Abstract translation: 具有零刚度的磁悬浮和平面驱动隔振器包括上安装板，下安装板和主体。 主体的套筒通过磁悬浮的平面电机被润滑并支撑在下安装板上。 安装在套筒中的活塞气缸通过圆柱形空气轴承表面抵靠套筒润滑。 上安装板和下安装板之间的角度自由度由球形空气轴承分离。 形成位置闭环控制系统，以精确地控制上安装板和下安装板之间的相对位置。

公开(公告)号：US09429208B2

公开(公告)日：2016-08-30

申请号：US14421378

申请日：2014-02-19

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Junning Cui ,  Jiubin Tan ,  Lei Wang

IPC: F16M13/00 ,  F16F15/03 ,  F16C32/06 ,  F16F15/00 ,  G01B7/00 ,  G01D5/20 ,  G01L19/00 ,  H02K41/035 ,  G03F7/20

CPC classification number: F16F15/03 ,  F16C32/0614 ,  F16F15/002 ,  G01B7/003 ,  G01D5/20 ,  G01L19/00 ,  G03F7/70833 ,  H02K41/0356

Abstract: A vibration isolator with zero stiffness whose angle degree of freedom is decoupled with a spherical air bearing has a main body, in which a sleeve and a lower mounting plate, a piston cylinder and the sleeve are both lubricated and supported with air bearing surfaces respectively, and the angle degree of freedom between a upper mounting plate and the lower mounting plate is decoupled with a spherical air bearing; a position close-loop control system comprising voice coil motors, displacement sensors, limit switches, a controller and a driver is introduced, and the relative position between the upper mounting plate and the lower mounting plate is precisely controlled.

Abstract translation: 具有零刚度的隔振器，其角度自由度用球形空气轴承解耦，其主体具有主体，其中套筒和下安装板，活塞缸和套筒分别被润滑并支撑在空气轴承表面上， 上安装板和下安装板之间的角度自由度用球形空气轴承分离; 引入了包括音圈电机，位移传感器，限位开关，控制器和驱动器的位置闭环控制系统，并且精确地控制了上安装板和下安装板之间的相对位置。

公开(公告)号：US20150219180A1

公开(公告)日：2015-08-06

申请号：US14421409

申请日：2014-02-19

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Jiubin Tan ,  Junning Cui ,  Lei Wang

IPC: F16F15/03 ,  F16F15/00 ,  G01D5/20 ,  H02K41/035 ,  G01B7/004

CPC classification number: F16F15/03 ,  F16F15/002 ,  F16F15/0275 ,  G01B7/004 ,  G01D5/20 ,  H02K41/0354

Abstract: A magnetically suspended and plane-drove vibration isolator with zero stiffness comprises an upper mounting plate, a lower mounting plate and a main body. A sleeve of the main body is lubricated and supported against the lower mounting plate by a magnetically suspended planar motor. A piston cylinder fitted in the sleeve is lubricated against the sleeve by a cylindrical air bearing surface. The angle degree of freedom between the upper mounting plate and the lower mounting plate is decoupled by a spherical air bearing. A position close-loop control system is formed to precisely control the relative position between the upper mounting plate and the lower mounting plate.

Abstract translation: 具有零刚度的磁悬浮和平面驱动隔振器包括上安装板，下安装板和主体。 主体的套筒通过磁悬浮的平面电机被润滑并支撑在下安装板上。 安装在套筒中的活塞气缸通过圆柱形空气轴承表面抵靠套筒润滑。 上安装板和下安装板之间的角度自由度由球形空气轴承分离。 形成位置闭环控制系统，以精确地控制上安装板和下安装板之间的相对位置。