公开(公告)号：US20210041403A1

公开(公告)日：2021-02-11

申请号：US17079427

申请日：2020-10-24

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Weijia SHI ,  Bingquan WANG ,  Bo ZHAO ,  Jiubin TAN

IPC: G01N29/26

Abstract: An ultrasonic phased array transducer device with a two-dimensional hinge array structure belongs to equipment in the technical field of ultrasonic detection. A connecting rod is fixedly connected to a fixed support and a two-dimensional hinge array respectively. Voice coil motors are symmetrically arranged in a shape of the British “Union Jack” with the connecting rod as a center, and are fixedly connected to the fixed support. Force output rods are respectively connected to voice coil motor coils and the upper surfaces of array units. Piezoelectric array elements are fixedly connected to the lower surfaces of all the array units. The numbers of the voice coil motors and the force output rods are 2N (N=4, 8, 12, 16, 20), the number of the piezoelectric array elements is 2N+1, and different N values are selected according to the sizes of workpieces to be detected. In the disclosure, by adjusting the current of each voice coil motor coil, the corresponding force output rod generates displacement to drive the two-dimensional hinge array unit to generate displacement, so as to push out and retract the hinge array unit and the piezoelectric array element fixedly connected below and drive the two-dimensional hinge array to generate deformation, so that the piezoelectric array elements fully fit with the surface of the workpiece to be detected. The disclosure can be applied to detection of the workpieces to be detected with flat surfaces, curved surfaces or spherical surfaces.

公开(公告)号：US20210041404A1

公开(公告)日：2021-02-11

申请号：US17079430

申请日：2020-10-24

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Bo ZHAO ,  Jiaxin LI ,  Weijia SHI ,  Jiubin TAN

IPC: G01N29/26 ,  G01N29/22 ,  G01N29/24

Abstract: The disclosure relates to a control method of a probe with ultrasonic phased array transducers in a hinge array, and belongs to the technical field of ultrasonic detecting. The control method includes the steps: firstly, fixing a part under test, making a central piezoelectric array element of piezoelectric array elements for the ultrasonic phased array transducers in the hinge array make contact with a surface of the part under test, and then fixing a fixed support; before detection is started, driving the hinge array through voice coil motors to make the piezoelectric array elements completely fit the surface of the part under test, wherein the number of the piezoelectric array elements is 2N+1 (N=1, 2, 3, 4 and 5), and different values of N are selected according to a size of the part under test; with the value of pressure of the central piezoelectric array element as a standard and difference values between values of pressures of other piezoelectric array elements and the value of pressure of the central piezoelectric array element as control signals of respective corresponding voice coil motor coils, controlling output rods to drive the hinge array; keeping the values of pressures of all the piezoelectric array elements consistent by means of an incremental digital PID control method; and then realizing deflecting and focusing of ultrasonic waves by means of a time delay rule for ultrasonic detecting, thereby detecting parts under test with planar or curved surfaces.

公开(公告)号：US20210042454A1

公开(公告)日：2021-02-11

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

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.

公开(公告)号：US20170167866A1

公开(公告)日：2017-06-15

申请号：US15118312

申请日：2014-12-26

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Lei WANG ,  Bo ZHAO ,  Jiubin TAN ,  Chuanzhi SUN

IPC: G01B21/24 ,  F01D5/30 ,  G01B9/02 ,  F01D5/02 ,  G01M15/02 ,  G01B21/02

CPC classification number: G01B21/24 ,  F01D5/02 ,  F01D5/027 ,  F01D5/30 ,  F01D25/285 ,  G01B7/30 ,  G01B7/312 ,  G01B9/02 ,  G01B21/02 ,  G01M15/02

Abstract: An aero engine rotor assembling method and device based on concentricity and verticality measurement belongs to mechanical assembly technology. The present invention effectively solves the problem of poor coaxality after the aero engine rotor is assembled and has the characteristics of high coaxality after the rotor is assembled, reduced vibration, mounting easiness, high flexibility and improved engine performance. The measurement and device is: determining rotary reference based on an air bearing rotary; determining the angular positioning of a rotary table according to a photoelectric encoder; extracting the radial error of the radial mounting plane and the inclination error of the axial mounting plane of the rotor based on the four-probe measuring device to obtain the influencing weight of this rotor to the assembled rotor on coaxality; measuring respectively all the rotors required for assembling to obtain the influencing weight of each rotor to the assembled rotor on coaxality; vector optimizing the weight of each rotor to obtain the assembling angle of each rotor.

公开(公告)号：US20170050275A1

公开(公告)日：2017-02-23

申请号：US15118803

申请日：2014-12-26

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Bo ZHAO ,  Lei WANG ,  Jiubin TAN ,  Chuanzhi SUN

IPC: B23P15/04 ,  G01B5/207 ,  F01D5/02 ,  G01B5/20

CPC classification number: B23P15/04 ,  F01D5/005 ,  F01D5/02 ,  F01D5/027 ,  F01D5/26 ,  F01D25/285 ,  F05D2220/323 ,  F05D2230/64 ,  F05D2250/31 ,  G01B5/205 ,  G01B5/207

Abstract: Aircraft engine rotors traditionally have low coaxiality after assembly. This is solved by the methods and devices described herein, having advantages that the rotors have high coaxiality after assembly, reduced vibration, easy installation, high flexibility, and improved engine performance. A measurement method and device use an air flotation rotary shaft system determining a rotary reference. An induction synchronizer determines angular positioning of a turntable. Using a four probe measurement device, a radial error of a rotor radial assembly surface and an inclination error of an axial mounting surface are extracted and an influence weight value of the rotor on the coaxiality of assembled rotors is obtained. All rotors required for assembly are measured and an influence weight value of each on the coaxiality of the assembled rotors is obtained. Vector optimization is performed on the weight value of each rotor and an assembly angle of each rotor is obtained.

Abstract translation: 飞机发动机转子在组装后传统上具有低同轴度。 这通过本文所述的方法和装置来解决，其优点在于转子在组装之后具有高的同轴度，减少的振动，易于安装，高灵活性和改进的发动机性能。 测量方法和装置使用确定旋转参考的空气浮选旋转轴系统。 感应同步器确定转台的角度定位。 使用四探头测量装置，提取转子径向组件表面的径向误差和轴向安装表面的倾斜误差，并且获得转子对组装转子同轴度的影响重量值。 测量组装所需的所有转子，并且获得各组合转子的同轴度的影响重量值。 对每个转子的重量值执行向量优化，并获得每个转子的组装角度。

公开(公告)号：US20240133844A1

公开(公告)日：2024-04-25

申请号：US18115790

申请日：2023-03-01

Applicant: Harbin Institute of Technology

Inventor： Bingquan WANG ,  Jiubin TAN ,  Bo ZHAO ,  Weijia SHI

IPC: G01N29/04 ,  G01L1/25 ,  G01N29/07

CPC classification number: G01N29/041 ,  G01L1/255 ,  G01N29/07

Abstract: An air-coupled ultrasonic plane stress detection method for a composite material based on dual-modal sound-time ratios of a Lamb wave includes: S1: assembling a detection device; S2: based on the detection device and the dual-modal sound-time ratios of the Lamb wave in S1, using unidirectionally loaded stress to obtain different stress coefficient relations; S3: based on the stress coefficient relations in S2, solving stress coefficients; S4: based on the stress coefficients in S3, acquiring three sound-time ratios; S5: based on the sound-time ratios in S4, describing a stress state of a detection point; and S6: repeating S4 and S5 till completing detection and scanning. The method improves the accuracy of stress coefficient calibration and air-coupled ultrasonic stress representation of a composite material panel greatly.

公开(公告)号：US20170175584A1

公开(公告)日：2017-06-22

申请号：US15118322

申请日：2014-12-26

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Jiubin TAN ,  Chuanzhi SUN ,  Lei WANG ,  Bo ZHAO

IPC: F01D25/28 ,  G01B7/31

CPC classification number: F01D25/28 ,  F01D5/027 ,  F01D25/285 ,  F05D2230/60 ,  F05D2260/83 ,  G01B7/31 ,  G01C9/06 ,  G01C2009/064

Abstract: An aero engine rotor air floatation assembling method and device based on a gantry structure belong to mechanical assembling technology. The present invention can effectively solve the problem of poor coaxality after the aero engine rotor is assembled and has the characteristics of high coaxality after the rotor is assembled, reduced vibration, mounting easiness, high flexibility and improved engine performance. The measuring method and device are: determining rotary reference based on a rotary air bearing; determining the angular positioning of a rotary table according to a grating ruler; extracting the radial error of the radial mounting plane and the inclination error of the axial mounting plane of the rotor based on the four-probe measuring device to obtain the influencing weight of this rotor to the assembled rotor on coaxality; measuring respectively all the rotors required for assembling to obtain the influencing weight of each rotor to the assembled rotor on coaxality; vector optimizing the weight of each rotor to obtain the assembling angle of each rotor.

公开(公告)号：US20160356392A1

公开(公告)日：2016-12-08

申请号：US15111750

申请日：2014-12-26

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Bo ZHAO ,  Jianwei WU ,  Jiubin TAN ,  Lei WANG

IPC: F16K31/06 ,  F16K11/02

CPC classification number: F16K31/0603 ,  F15B1/265 ,  F15B21/048 ,  F16K11/02 ,  Y10T137/87169 ,  Y10T137/87917

Abstract: A four-state adjustable air path structure is an air storage-type pneumatic actuating mechanism. An air source (1) is respectively connected to an air storage tank (3) and a port a1 of a two-position three-way solenoid valve A (4) via a check valve (2). A port c1 and a port b1 of the two-position three-way solenoid valve A (4) are respectively connected to a port c2 of a two-position three-way solenoid valve B (6) and a vent hole (5). A port a2 and a port b2 of the two-position three-way solenoid valve B (6) are respectively connected to a port b3 of a two-position three-way solenoid valve C (8) and a port of a throttle valve (7). Another port of the throttle valve (7) is connected to a port a3 of the two-position three-way solenoid valve C (8). A port c3 of the two-position three-way solenoid valve C (8) is connected to an air tank (9). The present air storage-type pneumatic actuating mechanism uses air as a medium, utilizing the compressibility of the air to achieve a centralized air supply, thereby significantly simplifying 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.

Abstract translation: 四状态可调节空气路径结构是空气存储式气动致动机构。 空气源（1）通过止回阀（2）分别连接到储气箱（3）和两位三通电磁阀A（4）的端口a1。 两位三通电磁阀A（4）的端口c1和端口b1分别连接到两位三通电磁阀B（6）和通气孔（5）的端口c2。 两位三通电磁阀B（6）的端口a2和端口b2分别连接到两位三通电磁阀C（8）的端口b3和节流阀（ 7）。 节流阀（7）的另一个端口连接到两位三通电磁阀C（8）的端口a3。 两位三通电磁阀C（8）的端口c3连接到空气罐（9）。 目前的空气存储式气动执行机构使用空气作为介质，利用空气的压缩性实现集中供气，从而显着简化机械结构的加工和维护。 也可以实现对操作速度的智能控制。 本发明具有结构简单，制造成本低，运行安全可靠，使用寿命长，适用于长距离传输等优点。

公开(公告)号：US20160339528A1

公开(公告)日：2016-11-24

申请号：US15111145

申请日：2014-12-26

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Jiubin TAN ,  Yuanyuan YANG ,  Lei WANG ,  Bo ZHAO

IPC: B23B31/40 ,  B23Q3/08

CPC classification number: B23B31/402 ,  B23B31/204 ,  B23Q3/08 ,  B23Q2703/10 ,  Y10T279/1012 ,  Y10T279/1258

Abstract: A pneumatic-type precision annular workpiece inner positioning surface clamping device, wherein a rod portion of a piston assembly (5) is inserted into a central hole of the wedge-shaped block (12), and the piston portion of the piston assembly (5) is located in a closed chamber of a cylinder body (15); a disc spring (3) is sleeved on the piston assembly (5); an air intake hole (1-1) is provided in the lower plate (1), an air vent hole (15-1) is provided at the upper portion of the cylinder body (15); and an elastic hinge block (6) is sleeved outside the wedge-shaped block (12). The pneumatic-type precision annular workpiece inner positioning surface clamping device has a simple structure, high reliability and strong adaptability.

Abstract translation: 一种气动型精密环形工件内定位表面夹紧装置，其中活塞组件（5）的杆部分插入楔形块（12）的中心孔中，并且活塞组件（5）的活塞部分 ）位于气缸体（15）的封闭室中。 盘簧（3）套在活塞组件（5）上; 在下板（1）中设置有进气孔（1-1），在缸体（15）的上部设有通气孔（15-1） 并且弹性铰链块（6）套在楔形块（12）的外部。 气动式精密环形工件内定位面夹紧装置结构简单，可靠性高，适应性强。

公开(公告)号：US20210044220A1

公开(公告)日：2021-02-11

申请号：US17079432

申请日：2020-10-24

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Weijia SHI ,  Xuyang YU ,  Bo ZHAO ,  Jiubin TAN

IPC: H02N2/14 ,  H02N2/00

Abstract: A zero-voltage zero-current soft switching type driving method for an ultrasonic motor is provided, relating to the technical field of driving of a two-phase actuator. The disclosure solves the problems of high loss, high heat amount and the like in a traditional ultrasonic motor driving circuit. The method provided realizes resonance between series inductors and buffer capacitors by means of an optimal design of the inductance of matching inductors, the capacitance of buffer capacitors, a dead time value and a delay time value, thereby causing a power tube to realize zero-voltage and zero-current switching. Two signal input ends of a two-phase pseudo full bridge inverter are connected to a power grid, and two signal output ends of the two-phase pseudo full bridge inverter are respectively connected to two signal input ends of a matching circuit; and the output ends of the matching circuit are respectively connected to a two-phase ultrasonic motor.