公开(公告)号：US20170124249A1

公开(公告)日：2017-05-04

申请号：US15375174

申请日：2016-12-12

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun Yang ,  Youdun Bai ,  Xin Chen ,  Jian Gao ,  Xindu Chen ,  Yunbo He ,  Yun Chen ,  Chengxiang Li ,  Jianglong Wang

IPC: G06F17/50

CPC classification number: G06F17/5086 ,  G06F17/5009 ,  G06F17/5095

Abstract: A high-speed platform motion parameter self-tuning method based on model identification and equivalent simplification is provided, comprising: establishing a test of a motion state of a high-speed platform, identifying model parameters, and optimizing motion parameters of an equivalent simplified model; selecting any motion function from a pre-set parameterized curve, setting initial parameters, and driving the high-speed platform to move under the action of a controller and an actuator; collecting dynamic response information of the platform, calculating dynamic characteristic information of the platform such as stiffness, frequency, damping and the like; establishing a dynamic response equivalent simplified model by using the acquired dynamic characteristic information, and performing the optimization constrained by meeting motion precision and targeting at shorter execution time for the motion parameters in the selected parameterized motion function to obtain the optimum parameters. The method of the present invention gives consideration to the dynamic characteristic requirement of the platform and the comprehensive requirement of the parameter identification and optimization on the industrial site, facilitates the implementation of an algorithm in a motion control card, and is suitable for rapidly acquiring the optimum motion parameters of the actual high-speed platform on site.

公开(公告)号：US09746123B2

公开(公告)日：2017-08-29

申请号：US15376654

申请日：2016-12-12

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun Yang ,  Youdun Bai ,  Xin Chen ,  Chaoran Chen ,  Chengxiang Li

IPC: F16M13/00 ,  F16M7/00 ,  F16F15/02 ,  F16F15/073

CPC classification number: F16M7/00 ,  F16F3/10 ,  F16F15/02 ,  F16F15/022 ,  F16F15/073 ,  F16F15/08 ,  F16F15/085 ,  F16F2224/02 ,  F16F2228/04 ,  F16F2228/066 ,  F16F2228/08 ,  F16F2230/34

Abstract: A composite frequency-adjustable shock absorber is provided, comprising a motion main machine stand bar and a shock absorption device, which are arranged on a foundation carrier platform; the shock absorption device is divided into an upper shock absorption device and a lower shock absorption device, the shock absorption device is arranged on a base with an inner cavity, and the upper shock absorption device for suppressing the low-frequency vibration and the lower shock absorption device for absorbing additional high-frequency vibration are connected in series; the upper shock absorption device comprises an elastic component based on a flexible hinge group and a prestress adjusting device, the flexible hinge group is arranged in the inner cavity of the base, the prestress adjusting device for adjusting the inherent frequency of the flexible hinge group is connected with the flexible hinge group, and the motion main machine stand bar is fixed on a load bearing portion of the flexible hinge group. The inherent frequency of the whole flexible hinge group is changed, so the high frequency band and the low frequency band of vibration systems with different masses and different excitation frequencies are effectively isolated, the structure is simple, the adjustment is convenient, and the cost is not high.

公开(公告)号：US20170089505A1

公开(公告)日：2017-03-30

申请号：US15376654

申请日：2016-12-12

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun Yang ,  Youdun Bai ,  Xin Chen ,  Chaoran Chen ,  Chengxiang Li

IPC: F16M7/00 ,  F16F15/073 ,  F16F15/02

CPC classification number: F16M7/00 ,  F16F3/10 ,  F16F15/02 ,  F16F15/022 ,  F16F15/073 ,  F16F15/08 ,  F16F15/085 ,  F16F2224/02 ,  F16F2228/04 ,  F16F2228/066 ,  F16F2228/08 ,  F16F2230/34

Abstract: A composite frequency-adjustable shock absorber is provided, comprising a motion main machine stand bar and a shock absorption device, which are arranged on a foundation carrier platform; the shock absorption device is divided into an upper shock absorption device and a lower shock absorption device, the shock absorption device is arranged on a base with an inner cavity, and the upper shock absorption device for suppressing the low-frequency vibration and the lower shock absorption device for absorbing additional high-frequency vibration are connected in series; the upper shock absorption device comprises an elastic component based on a flexible hinge group and a prestress adjusting device, the flexible hinge group is arranged in the inner cavity of the base, the prestress adjusting device for adjusting the inherent frequency of the flexible hinge group is connected with the flexible hinge group, and the motion main machine stand bar is fixed on a load bearing portion of the flexible hinge group. The inherent frequency of the whole flexible hinge group is changed, so the high frequency band and the low frequency band of vibration systems with different masses and different excitation frequencies are effectively isolated, the structure is simple, the adjustment is convenient, and the cost is not high.