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A Tracking Error Estimation Method for Servo Drive Axis

A servo-driven, tracking error technology, used in the testing of mechanical parts, the testing of machine/structural parts, instruments, etc., can solve the problems of difficult operation, low efficiency, and inability to promote, to overcome difficult operation, fast and accurate. estimated effect

Active Publication Date: 2021-08-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The servo drive shaft is a complex mechatronic system, and it is difficult to effectively estimate its tracking error
Traditional methods often require the establishment of complex models and simulations with the help of industrial software. Although the estimation results of the tracking error of the servo drive shaft can be obtained, the operation is difficult and inefficient, and it cannot be quickly promoted in the industrial field.

Method used

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  • A Tracking Error Estimation Method for Servo Drive Axis
  • A Tracking Error Estimation Method for Servo Drive Axis
  • A Tracking Error Estimation Method for Servo Drive Axis

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] figure 1 Shown is a flow chart of a tracking error estimation method for a servo drive shaft of the present invention. In order to understand the present invention more clearly, a CNC machine tool servo drive shaft control system is taken as an example for illustration.

[0027] see figure 2 ,according to figure 2 The block diagram of the CNC machine tool servo drive shaft control system is shown, and the control system model of the servo drive shaft is established as follows:

[0028]

[0029] In the formula, G pc , G vc with G p are respectively the position loop controller, the speed loop controller and the control object of the servo drive shaft, K pp is the proportional gain of the position loop controller, K pv with T v are the proportional gain and integral time constant of the speed loop controller respecti...

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Abstract

The invention discloses a tracking error estimation method for a servo drive shaft, belonging to the technical field of electromechanical integration. This method first establishes the control system model of the servo drive shaft, and derives the complete expression of the tracking error in the Laplace domain; further, according to the composition characteristics of the displacement command signal, the equivalent form of the complete expression is obtained; finally, through the Laplace Inverse Steinian transform to estimate the tracking error of a servo-driven shaft in the time domain. Using the proposed method, the fast and accurate estimation of the tracking error of the servo drive shaft is realized in the time domain, which overcomes the problems of difficult operation and low efficiency of the traditional method, and provides an accurate and convenient tool for field engineers and technicians .

Description

technical field [0001] The invention belongs to the technical field of mechatronics, and in particular relates to the tracking error estimation problem of a servo drive shaft. Background technique [0002] Servo drive shafts include linear feed shafts and rotary shafts, which are the basic components of advanced manufacturing equipment represented by CNC machine tools. They are used to achieve high-precision motion and are widely used in industrial fields. Tracking error is one of the core indicators to evaluate the performance of servo drive shaft, and it is of great significance to carry out research on tracking error. [0003] In the actual application process of the servo drive shaft, engineers and technicians need to effectively estimate its tracking error to judge the working state of the servo drive shaft and formulate corresponding performance improvement plans. The servo drive shaft is a complex mechatronic system, and it is difficult to effectively estimate its tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 王冬王立平
Owner TSINGHUA UNIV
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