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Parameter measurement method and device for hysteresis system containing Jenkins unit and medium

A technology of system parameters and measurement methods, which is applied in the field of hysteretic system parameter measurement, can solve problems such as difficult to obtain hysteretic force curves, and achieve the effects of low measurement time and measurement step size, high recognition accuracy, and a wide range of applications

Pending Publication Date: 2020-11-06
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the hysteresis parameter identification under the entire hysteresis system, it is difficult to obtain a better hysteresis curve because the hysteresis module is in working condition and is affected by other components of the system

Method used

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  • Parameter measurement method and device for hysteresis system containing Jenkins unit and medium
  • Parameter measurement method and device for hysteresis system containing Jenkins unit and medium
  • Parameter measurement method and device for hysteresis system containing Jenkins unit and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this example, refer to figure 2 , the hysteresis system parameter measurement method including the Jenkins unit includes the following steps:

[0041] S1. Determine the dynamic equation of the hysteretic system;

[0042] S2. Determine the true acceleration response of the hysteretic system under the load;

[0043] S3. Setting an initial value of a parameter; the initial value of the parameter includes an initial value of the stiffness of the first elastic element, an initial value of the stiffness of the second elastic element, and an initial value of the friction threshold of the Coulomb friction element;

[0044] S4. Determine the dynamic response sensitivity equation of the hysteretic system;

[0045] S5. Perform multiple iterations; in one iteration, determine the acceleration response sensitivity of the hysteresis system according to the dynamic equation and the acceleration response sensitivity determined by the dynamic response sensitivity equation, and det...

Embodiment 2

[0065] In this embodiment, specific data are used to describe the method for measuring the parameters of the hysteretic system including the Jenkins unit in Embodiment 1.

[0066] From the content of Example 1, it can be seen that Example 1 takes the multi-degree-of-freedom multi-hysteresis component system as the research object.

[0067] In order to describe the present invention more concisely, image 3 A single hysteretic component of a single degree of freedom system is used as an example. image 3 The content shown contains a Jenkins unit bilinear hysteretic system, that is, a single degree of freedom single hysteretic component system. The stiffness of the hysteretic system is K=10, the mass is M=0.25, the damping is C=0.1, and the impact load It is known that the parameters of the hysteretic system are P=[k 1 ,k 2 ,φ]=[1,4,2].

[0068] image 3 The displacement response of the hysteretic system is shown as Figure 4 shown. Depend on Figure 4 It can be seen t...

Embodiment 3

[0076] In this embodiment, a computer device includes a memory and a processor, the memory is used to store at least one program, and the processor is used to load the at least one program to execute the method in Embodiment 1, implementation and embodiment Same technical effect as described in 1 and 2.

[0077] In this embodiment, a storage medium stores processor-executable instructions therein, and the processor-executable instructions are used to execute the method in Embodiment 1 when executed by a processor, to achieve the same as Embodiment 1 and The same technical effect as described in 2.

[0078] It should be noted that, unless otherwise specified, when a feature is called "fixed" or "connected" to another feature, it can be directly fixed and connected to another feature, or indirectly fixed and connected to another feature. on a feature. In addition, descriptions such as up, down, left, and right used in the present disclosure are only relative to the mutual posi...

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Abstract

The invention discloses a parameter measurement method and device for a hysteresis system containing a Jenkins unit and a medium. The measurement method comprises the following steps: determining a kinetic equation, a kinetic response sensitivity equation and a real acceleration response; and setting a parameter initial value, solving a response sensitivity equation according to the real acceleration response and the parameter initial value, obtaining a parameter increment, executing a plurality of iterative processes, updating system parameters, returning the obtained parameters when the iterative processes meet an end condition, and the like. When the system of the hysteresis system is measured, the conditions of various hysteresis components are analyzed on the whole level, so that theparameters of all the hysteresis components in the hysteresis system containing the Jenkins unit can be identified at one time. The invention is low in requirements for measurement time and measurement step length, and can adapt to the conditions that a hysteresis system contains a plurality of hysteresis components, and the hysteresis components may influence one another. The invention is widelyapplied to the technical field of computer assistance.

Description

technical field [0001] The invention relates to the field of computer-aided technology, in particular to a hysteretic system parameter measurement method, device and medium including Jenkins units. Background technique [0002] In the fields of aerospace, machinery, and civil engineering, when analyzing friction, bolted connections, and vibration isolation, phenomena such as hysteresis, elastoplasticity, and slip can be equivalent to bilinear hysteretic systems with Jenkins elements, including Jenkins elements The hysteretic system includes at least one hysteretic component, each hysteretic component contains an elastic unit and a Coulomb friction unit, and the bilinear hysteretic system containing a Jenkins unit has the characteristics of hysteretic properties and energy dissipation. During the design, production and maintenance of devices such as friction, bolted joints and vibration isolation, it is necessary to measure parameters such as the stiffness of the elastic unit...

Claims

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Application Information

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IPC IPC(8): G06F17/11G06F17/16
CPCG06F17/11G06F17/16Y02T90/00
Inventor 吕中荣杨达豪汪利
Owner SUN YAT SEN UNIV
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