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公开(公告)号：US10760448B2
公开(公告)日：2020-09-01
申请号：US16375142
申请日：2019-04-04
Applicant: Harbin Institute of Technology
Inventor： Jiubin Tan , Yongmeng Liu , Chuanzhi Sun
Abstract: The present invention provides a deep learning regulation and control and assembly method and device for large-scale high-speed rotary equipment based on dynamic vibration response properties. The present invention starts from geometrical deviation of multiple stages of rotor/stator of an aircraft engine, amount of unbalance of rotor/stator, rigidity of rotor/stator and vibration amplitude of rotor/stator, considers the influence of the area of the assembly contact surface between two stages of rotors/stators, and sets the rotation speed of rotor/stator to be the climbing rotation speed to obtain vibration amplitude parameters. According to the calculation method of the coaxiality, amount of unbalance, rigidity and vibration amplitude of multiple stages of rotor/stator, an objective function taking assembly phases as variables is established, a Monte Carlo method is used to solve the objective function, and a probability density function is solved according to a drawn distribution function to obtain the probability relationship between the contact surface runout of the rotor/stator of the aircraft engine and the final coaxiality, amount of unbalance, rigidity and vibration amplitude of multiple stages of rotor/stator, thereby realizing assembly optimization and distribution of tolerances of multiple stages of rotor/stator.
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公开(公告)号：US09746096B2
公开(公告)日：2017-08-29
申请号：US15111750
申请日：2014-12-26
Applicant: HARBIN INSTITUTE OF TECHNOLOGY
Inventor： Bo Zhao , Jianwei Wu , Jiubin Tan , Lei Wang
CPC classification number: F16K31/0603 , F15B1/265 , F15B21/048 , F16K11/02 , Y10T137/87169 , Y10T137/87917
Abstract: This invention relates to a four-state adjustable air path structure. An air source is connected to an air storage tank and a first two-position three-way solenoid valve via a check valve. The first two-position three-way solenoid valve is connected to a second two-position three-way solenoid valve and a vent hole. The second two-position three-way solenoid is connected to a third two-position three-way solenoid valve and a port of a throttle valve. Another port of the throttle valve is connected to the third two-position three-way solenoid valve. The third two-position three-way solenoid valve is connected to an air tank. The present four-state adjustable air path structure simplifies processing and maintenance of a mechanical structure. Intellectual control of an operating speed can also be achieved. The present invention has advantages such as structural simplicity, low manufacturing costs, safe and reliable operation, long service life, and suitability for long-distance transmission.
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公开(公告)号：US09695707B2
公开(公告)日：2017-07-04
申请号：US15304238
申请日：2014-12-26
Applicant: HARBIN INSTITUTE OF TECHNOLOGY
Inventor： Jiubin Tan , Jingzhi Huang , Wei Gu , Zhongpu Wen
CPC classification number: F01D21/003 , B25B27/00 , F01D25/285 , F05D2220/323 , F05D2240/10 , F05D2240/24 , F05D2250/35 , F05D2260/83 , G01B21/00 , Y02T50/671
Abstract: A five-degree-of-freedom adjustment and positioning method and apparatus for assembly/measurement of rotor and stator of an aircraft engine; said method comprises adjusting a plane motion and a rotation of a tested piece through composite motion comprising five degrees of freedom: a 360° rotatory motion around a Z axis, a plane motion along an X axis and a plane motion along a Y axis, a rotatory motion around the X axis and a rotatory motion around the Y axis; said apparatus comprises: a clamping mechanism, a turning platform component, a translational platform component and a rotational platform component. The present invention designs a five-degree-of-freedom adjustment and positioning method and apparatus having properties of large load bearing, high precision and high stiffness, thus improving assembly efficiency and measurement accuracy of the aircraft engine.
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公开(公告)号：US09587927B2
公开(公告)日：2017-03-07
申请号：US14378880
申请日：2012-11-08
Applicant: HARBIN INSTITUTE OF TECHNOLOGY
Inventor： Jiubin Tan , Pengcheng Hu , Xiaofei Diao
CPC classification number: G01B9/02007 , G01B9/02003 , G01B9/02027 , G01B9/02045 , G01B11/14 , G01B2290/70 , G01J9/04 , G02B27/283
Abstract: A high speed high resolution heterodyne interferometric method and system are provided. The invention uses two spatially separated beams with slightly different frequencies and has two measurement signals with opposite Doppler shift. The switching circuit selects one of the two measurement signals for displacement measurement according to the direction and speed of the target movement. In this invention, the measurement is insensitive to the thermal variation; the periodic nonlinearity is essentially eliminated by using two spatially separated beams; the measurable target speed of the interferometer is no longer limited by the beat frequency of the laser source.
Abstract translation: 提供了高速高分辨率外差干涉法和系统。 本发明使用具有稍微不同频率的两个空间分离的波束，并且具有相反多普勒频移的两个测量信号。 开关电路根据目标运动的方向和速度选择两个测量信号中的一个用于位移测量。 在本发明中，测量对热变化不敏感; 通过使用两个空间分离的光束基本上消除了周期性非线性; 干涉仪的可测量目标速度不再受激光源的拍频的限制。
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45.发明申请METHOD AND DEVICE FOR MEASURING DIP ANGLE OF OPPOSITELY CROSSLY PLACED PAIRED QUARTERED RING-QUARTERED CIRCLE NESTED POLAR PLATES 审中-公开用于测量相对位置的配对圆柱形圆柱形极板的双角的方法和装置公开(公告)号：US20170052025A1
公开(公告)日：2017-02-23
申请号：US15307300
申请日：2015-03-31
Applicant: HARBIN INSTITUTE OF TECHNOLOGY
Inventor： Pengcheng Hu , Jiubin Tan , Jiahao Guo
CPC classification number: G01C9/20 , G01C9/00 , G01C9/06 , G01C9/18 , G01C2009/062 , G01C2009/185
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.
Abstract translation: 用于测量相对交叉配对的四分之一环四极嵌套极板的倾角的方法。 传感器单元的环形共面电容测量头由四个四分之一圆形金属板和四个四分之一圆环形金属板组成，八个金属板彼此共面和同心，四分之一圆形金属板和四分之一圆形 对应于相同扇形角的环形金属板形成电容器。 两个环形共面电容测量头设置在两个圆形绝缘基板上，两个圆形绝缘基板用作圆柱形容器的两个底面，圆柱形容器横向布置，等于圆柱形容器的1/2体积的绝缘液体为 以密封方式注入圆筒形容器中。 潜在引线提取十六个金属板的电位，并连接到电容测量单元的输入端，电容测量单元连接到倾斜测量单元。 当圆筒形容器倾斜时，两个环形共平面电容测量头和绝缘液体的相对位置改变，并且可以通过测量电容值的变化来计算倾角值。 还公开了一种用于测量相对交叉配对的四分之一环四极嵌套极板的倾角的装置。
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Patent Agency Ranking
公开(公告)号：US12055710B2
公开(公告)日：2024-08-06
申请号：US17477638
申请日：2021-09-17
Applicant: Harbin Institute of Technology
Inventor： Jiubin Tan , Yang Yu , Jian Shi
CPC classification number: G02B27/0025 , G01B11/26 , G02B17/08 , G02B26/0825 , G02B27/283 , G02B27/30
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.
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47.发明公开公开(公告)号：US20240102877A1
公开(公告)日：2024-03-28
申请号：US17969985
申请日：2022-10-20
Applicant: Harbin Institute of Technology
Inventor： Chuanzhi Sun , Huilin Wu , Yongmeng Liu , Jiubin Tan
Abstract: Provided is a large high-speed rotary equipment gap stacking assembly apparatus and assembly method based on digital twin, and relates to the technical field of engine assembly measurement. The disclosure solves the problem of unbalanced rotation of the rotary parts caused by large assembly error during multi-stage rotary parts are stacked in a gap way. The disclosure includes the assembly apparatus entity and the assembly method; the assembly apparatus entity is configured to establish data communication with the upper computer through data acquisition apparatus, and upper computer is configured to establish a virtual assembly model; the virtual assembly model and optimal coaxiality of the multi-stage rotary parts in gap stacking can be obtained according to the assembly method, and the assembly process can be controlled by using the virtual assembly model and the optimal coaxiality. The disclosure is suitable for controlling the assembly process of the rotary parts.
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48.发明授权公开(公告)号：US11802757B2
公开(公告)日：2023-10-31
申请号：US17417925
申请日：2019-04-18
Applicant: HARBIN INSTITUTE OF TECHNOLOGY
Inventor： Pengcheng Hu , Di Chang , Jiubin Tan
IPC: G01B9/02015 , G01B9/02001 , G01B9/02003
CPC classification number: G01B9/02007 , G01B9/02003 , G01B9/02015 , G01B9/02027
Abstract: Present disclosure relates to a heterodyne grating interferometric method and system for two-degree-of-freedom with high tolerance. The system comprises a separately modulated heterodyne laser (1), an optical prism (23) and a photoelectric detection and signal processing unit (4). The separately modulated heterodyne laser (1) simultaneously outputs two laser beams at different frequencies, which are incident in parallel to a first beamsplitting surface so as to be split, and then a part thereof is incident to a retro-reflector (233) to produce reference beams (53a, 53b), which are incident to a third beamsplitting surface, and the other part traverses a double-diffraction structure formed by a measured grating (3) and retro-reflectors (234a, 234b) to obtain two measured beams (59a, 59b), which are incident to a second beamsplitting surface and then are divided into two parts. Wherein one part is converged to form a first interference beam (61), and the other part is incident to the third beamsplitting surface and is converged with the corresponding reference beams (53a, 53b) to form second and third interference beams (62, 63). Photoelectric detection and signal processing is performed on the interference signals of the three interference beams (61, 62, 63), so as to calculate horizontal and vertical displacement of the grating (3). The present measurement method and system improve the angular tolerance of tip and tilt of the optical grating (3) while increasing the fold factors.
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公开(公告)号：US20230228720A1
公开(公告)日：2023-07-20
申请号：US17704099
申请日：2022-03-25
Applicant: Harbin Institute of Technology
Inventor： Bo Zhao , Jiubin Tan , Weijia Shi
CPC classification number: G01N29/46 , G01N29/041 , G01N29/2437
Abstract: A method, system, device, and medium for online stress monitoring without baseline data based on single-mode multi-frequency signal fusion are provided. The method includes: establishing a dispersion curve according to geometric dimensions and material parameters of a measured object; then solving an approximate linear relationship between propagation time of S0 modes with different frequencies and stress at a fixed propagation distance by using a relationship between stress and group velocity, the obtained linear relationship being an acousto-elastic equation required for final measurement; then performing Hilbert transformation on an obtained signal, extracting a signal envelope, and determining arrival time of two excitation frequency signals by means of a peak extraction algorithm and a time domain width of an excitation signal; and calculating a propagation time ratio and substituting the propagation time ratio into a pre-calibrated acousto-elastic equation to solve a stress value of an object to be measured. The disclosure is advantageous in that the multi-frequency data is fused by using dispersion characteristics of a single-mode Lamb wave and an acousto-elastic effect, thereby achieving online stress monitoring without baseline data.
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50.发明授权公开(公告)号：US11630929B2
公开(公告)日：2023-04-18
申请号：US17079428
申请日：2020-10-24
Applicant: HARBIN INSTITUTE OF TECHNOLOGY
Inventor： Bo Zhao , Xue Qi , Weijia Shi , Jiubin Tan
IPC: G06F30/20 , G06N3/08 , G06F111/10
Abstract: The disclosure provides a linearization identification method for a hysteresis model of piezoceramics based on Koopman operators, and belongs to the field of precision positioning. In order to solve the problem of hysteresis of a piezoelectric actuator in practical application, the disclosure further provides the linearization identification method for the hysteresis model of the piezoceramics based on Koopman operators. The method of the disclosure includes: Step I, building a structure of the hysteresis model of the piezoceramics; Step II, determining parameters of the hysteresis model of the piezoceramics; Step III, obtaining a great amount of simulation data by using simulation software; Step IV, performing deep learning training based on Koopman operators; and Step V, determining a linearization model for the hysteresis model of the piezoceramics based on Koopman operators. The disclosure is applicable to piezoelectric actuator control and precision positioning.
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