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Novel device and method capable of realizing full-module friction identification

A component and a new type of technology, applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve problems such as reducing friction in the dynamic response of the system, reducing the accuracy of the friction model, etc., to improve accuracy and overall The effect of performance index improvement and precision improvement

Active Publication Date: 2017-04-26
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional friction identification experimental devices often regard the electromechanical system as a whole, and the identification result is a single friction model of the entire electromechanical system, which greatly reduces the accuracy of the friction model
At the same time, how to improve the dynamic response of the system and reduce the friction, according to the traditional friction identification test device has a large blindness and obvious shortcomings

Method used

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  • Novel device and method capable of realizing full-module friction identification
  • Novel device and method capable of realizing full-module friction identification
  • Novel device and method capable of realizing full-module friction identification

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Experimental program
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Embodiment Construction

[0024] like Figure 1-3 As shown, the new experimental device disclosed by the present invention that can realize friction identification of all components is composed of a motor 1, a coupling 2, a torque sensor 3, a coupling 4, a lead screw support seat 5, a lead screw 6, a base 7 , worktable 8, guide rail 9, worktable support block 10, slider 11, force sensor 12, connecting frame 13, grating ruler 14, screw nut block 15, screw support seat 16, the motor 1 drives the The lead screw 6 drives the table 8 to move along the guide rail 9 through the lead screw nut block 15; the specific structure is as follows:

[0025] The motor 1 is arranged on the base 7, the motor 1 drives the lead screw 6 to rotate, and the torque sensor 3 is connected between the motor 1 and the lead screw 6; the lead screw 6 drives a lead screw nut block 15 to slide back and forth along it , the lead screw nut block is driven with a connecting frame 13 to move together with it; there are two parallel guide...

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Abstract

The invention relates to a novel experimental device and method capable of realizing full-module friction identification. The experimental device comprises a pedestal, a motor, a coupling, a torque sensor, a lead screw support seat, a lead screw, a lead screw nut block, a connecting frame, a force sensor, a workbench supporting block, a workbench, guide rails and sliding blocks at two sides, and a grating ruler, the principle is that a servo motor drives the experimental device, realizes linear motion of the workbench through a transmission mechanism, utilizes the torque sensor to measure motor output torque, utilizes the force sensor to obtain force of friction between the sliding blocks and the guide rails, and realizes full-module friction identification of an electromechanical system according to a LuGre friction model expression. The novel experimental device capable of realizing full-module friction identification overcomes the defect that a conventional friction identification experimental device regards the electromechanical system as a whole and thus greatly reducing accuracy of a friction model, very visually performs separated identification on force of friction and friction moment of modules of the device, and thus can improve accuracy of friction compensation.

Description

technical field [0001] The invention relates to a novel experimental device and method capable of realizing friction identification of all components, in particular using a torque sensor and a force sensor to realize friction identification of each component of an experimental platform, belonging to the field of electromechanical servo precision control and experimental equipment. Background technique [0002] Friction compensation is an important link in constructing a high-precision servo system, and it has become one of the research hotspots of current servo control strategies. The compensation strategy based on the friction model is a method that essentially compensates the friction of the servo system, but accurate friction compensation can only be achieved when the friction model and model parameters are very accurate. [0003] Regarding the friction model, the LuGre friction model can accurately describe various dynamic and static friction characteristics such as pre-...

Claims

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Application Information

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IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 冯显英杜付鑫李沛刚张名扬李慧岳明君
Owner SHANDONG UNIV
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