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公开(公告)号：US20170087677A1
公开(公告)日：2017-03-30
申请号：US15376658
申请日：2016-12-13
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Zhijun Yang , Youdun Bai , Xin Chen , Jian Gao , Xindu Chen , Yunbo He , Yun Chen , Ruiqi Li , Chaoran Chen
CPC classification number: B23Q1/25 , B23Q1/34 , B23Q11/0039 , B25H1/02
Abstract: The present invention proposes a macro-micro integrated compound platform with adjustable dynamic characteristics. When a macro platform mover and a micro platform mover are driven at the same time, the whole large-scale high-speed motion can be realized; when a motion deviation occurs, a micro motion platform can be driven separately to realize the high-frequency motion deviation compensation, because the micro motion platform has small inertia and zero friction and achieves precision displacement output through elastic deformation. The macro-micro integrated compound platform can realize high-speed precision motion through compound motion control, is mounted and used in a manner consistent with the traditional platform, and is convenient to be popularized and applied; a stiffness and frequency adjustment mechanism and a variable damper are arranged, so that the micro motion platform can transfer the motion of a macro motion platform and isolate the vibration at any frequency, and realize high-precision displacement compensation; meanwhile, damping of the variable damper is matched with the stiffness and frequency parameters to ensure the high-precision displacement compensation at any frequency and increase the range of working frequency.
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12.发明申请公开(公告)号：US20170003147A1
公开(公告)日：2017-01-05
申请号：US15114087
申请日：2014-09-24
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Zhijun Yang , Youdun Bai , Xin Chen , Jian Gao , Haidong Yang , Meng Wang
IPC: G01D5/347
CPC classification number: G01D5/34707 , G01D5/34746
Abstract: The present disclosure relates to a macro-micro composite grating ruler measuring system based on conversion and amplification in vertical and horizontal directions. The macro-micro composite grating ruler includes a grating ruler, a macro-micro reading system moving with respect to the grating ruler, and a counting and image processing module. The macro-micro reading system faces grating strip datum and is parallel to the grating ruler. The system further includes a measuring reference line. The measuring reference line obtained by the image sensor together with grating strips forms an image overlap in the counting and image processing module. The measuring reference line and the grating strip jointly include an angle θ. With the foregoing configuration, the present invention is compatible with the existing incremental grating rulers and absolute grating rulers, so is highly applicable.
Abstract translation: 本公开涉及基于垂直和水平方向上的转换和放大的宏观微复合光栅尺测量系统。 宏观微复合光栅尺包括光栅尺，相对于光栅尺移动的宏观微读取系统，以及计数和图像处理模块。 宏观微观读取系统面对光栅条纹基准面并与光栅尺平行。 该系统还包括测量参考线。 由图像传感器与光栅条纹获得的测量参考线在计数和图像处理模块中形成图像重叠。 测量基准线和光栅条共同包括角度θ。 利用上述结构，本发明与现有的增量光栅尺和绝对光栅尺匹配，因此是非常适用的。
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Patent Agency Ranking
公开(公告)号：US11626815B2
公开(公告)日：2023-04-11
申请号：US17014997
申请日：2020-09-08
Applicant: Guangdong University of Technology
Inventor： Zhijun Yang , Jianbin Huang , Yutai Wei , Zhongyi Gao , Guanxin Huang , Youdun Bai
Abstract: A novel high-precision rigid-flexible coupling rotating platform includes a foundation, a rigid bearing, a bearing sleeve, a core rotating platform, a rotating driver and a coder; the bearing sleeve is fixed on the foundation; the rigid bearing is in rotatable drive connection with the core rotating platform, and connected with the foundation through the bearing sleeve; an upper surface of the core rotating platform is provided with a plurality of groups of flexible hinges; when the rotating driver applies a driving force to rotate the core rotating platform, the driving force elastically deforms the flexible hinge rings. The flexible hinges are used and disposed on the upper surface of the core rotating platform; without disassembling the whole rotating platform, a corresponding group of flexible hinges can be changed but an assembling relationship between other groups of flexible hinges cannot be broken.
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公开(公告)号：US10661399B2
公开(公告)日：2020-05-26
申请号：US15844571
申请日：2017-12-17
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Zhijun Yang , Youdun Bai , Xin Chen , Chaoran Chen
Abstract: The present invention discloses a single-drive rigid-flexible coupling precision motion platform, including a machine base, a linear guide rail, a rigid-flexible coupling motion platform, a linear driver and a displacement sensor, wherein the rigid-flexible coupling motion platform includes a rigid frame, flexible hinges and a core motion platform; and the core motion platform of the rigid-flexible coupling motion platform is connected with the rigid frame through the flexible hinges. In this arrangement, the single-drive rigid-flexible coupling precision motion platform disclosed by the present invention can realize high-accuracy continuous change displacements of the platform, thereby avoiding displacement “jitter” caused by sudden change of acceleration. The present invention further discloses a realization method and an application including the above platform.
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15.发明授权公开(公告)号：US10564553B2
公开(公告)日：2020-02-18
申请号：US15853847
申请日：2017-12-24
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Zhijun Yang , Qian Li , Youdun Bai , Xin Chen , Xun Chen , Yaobin He , Han Sun , Guanxin Huang , Baisheng Wu
Abstract: The present invention also discloses a multi-DOF (Degree of Freedom) large-stroke high-precision motion platform system using the guide mechanism. A large load-bearing guide mechanism comprises: a rigid frame for generating a large-stroke displacement to realize high-speed motion; a core motion platform connected with a motion portion of a non-contact actuator, connected with the rigid frame by a primary flexible hinge group and a secondary flexible hinge group, and used for generating a small-stroke precise displacement by elastic deformation of the flexible hinge groups under driving of the actuator.
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16.发明申请公开(公告)号：US20170126112A1
公开(公告)日：2017-05-04
申请号：US15375178
申请日：2016-12-12
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Xin Chen , Zhijun Yang , Youdun Bai , Jian Gao , Hanxiong Li , Haidong Yang , Yisheng Guan , Xindu Chen
Abstract: The present invention proposes a linear motor common stator dual-drive macro/micro integrated high-speed precision motion one-dimensional platform, including a base, linear guide rails, slide blocks, a U-shaped linear motor stator, a macro motion rotor, a micro motion rotor and a macro/micro integrated platform. A macro motion platform and a micro motion platform are connected to form an integrated platform by virtue of an elastic member, an outer frame of the macro/micro integrated platform is mounted on the linear guide rails and the slide blocks, the U-shaped linear motor stator is arranged on the base, rotors are respectively mounted on the macro motion platform and the micro motion platform, and large-scale overall high-speed motion can be realized when macro and micro rotors are simultaneously driven; and when a motion deviation occurs, the micro motion platform realizes precise displacement output by virtue of elastic deformation due to small inertia and zero friction, and high-frequency motion deviation compensation can be realized by virtue of individual drive. Due to composite motion control, one-dimensional high-speed precision motion can be realized, an installation and use manner is consistent with that of the traditional platform, and the one-dimensional platform is convenient to popularize and use.
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17.发明申请METHOD OF PLANNING ASYMMETRIC VARIABLE ACCELERATION BASED ON NON-LINEAR FINITE ELEMENT DYNAMIC RESPONSE SIMULATION 审中-公开基于非线性有限元动态响应模拟的不对称可变加速度规划方法公开(公告)号：US20160350462A1
公开(公告)日：2016-12-01
申请号：US15113844
申请日：2014-09-24
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Xin Chen , Youdun Bai , Zhijun Yang , Jian Gao , Haidong Yang , Meng Wang
CPC classification number: G06F17/5018 , G06F17/50 , G06F17/5086 , G06T17/10
Abstract: Various embodiments relate to a method of planning asymmetric variable acceleration based on non-linear finite element dynamic response simulation. The planning method involves obtaining solution of a non-linear finite element model positioning process that has kinematic freedom and adopts a parameterized motion function as its boundary condition; determining whether post-driving amplitude of an execution end satisfies positioning precision, and if it does not, continuing getting solution, and if it is, adjusting an energy decay time; determining whether a target response time is minimum, and if it is, verifying the set motion parameter as optimal, and if it is not, calculating a gradient and a step size of the motion parameter, and resetting the motion parameter for solution. The present disclosure utilizes this method to plan high-speed high-acceleration motion for mechanisms that are affected by non-linear factors such as large flexible deformation and require precise positioning.
Abstract translation: 各种实施例涉及基于非线性有限元动态响应模拟来规划不对称可变加速度的方法。 规划方法包括获得具有运动自由度并采用参数化运动函数作为其边界条件的非线性有限元模型定位过程的解; 确定执行端的后驱动幅度是否满足定位精度，如果不是，则继续获得解，并且如果是，则调整能量衰减时间; 确定目标响应时间是否最小，并且如果是，则将所设置的运动参数验证为最佳，如果不是，则计算运动参数的梯度和步长，并且重新设置运动参数以进行解。 本发明利用这种方法为受非线性因素如大的挠性变形影响并需要精确定位的机构规划高速高速运动。
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