Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Active control method for output feedback dynamic surface based on flutter of micro-milling processing system

A processing system and output feedback technology, applied in the field of active control of output feedback dynamic surface based on micro-milling processing system chatter, can solve problems such as observer error and failure, and achieve the effect of reducing computational burden and simple control law

Pending Publication Date: 2022-08-05
SHENYANG INST OF ENG +4
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second method is to use robust adaptive methods, such as backstepping control, sliding mode control and dynamic surface control methods to compensate the hysteresis without establishing an inverse model, but the disadvantage of this method is that the output feedback In this case, the method fails because the unbounded nature of the nonlinear part of the hysteresis may lead to no upper bound on the observer error

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Active control method for output feedback dynamic surface based on flutter of micro-milling processing system
  • Active control method for output feedback dynamic surface based on flutter of micro-milling processing system
  • Active control method for output feedback dynamic surface based on flutter of micro-milling processing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] An output feedback dynamic surface active control method based on the chatter vibration of a micro-milling machining system, comprising the following steps:

[0058] (1) Establish a dynamic model for the chatter of the cutter head of the micro-milling machining system;

[0059] like figure 1 As shown, the micro-milling machining system is approximated as a two-degree-of-freedom system. The cutting force model of micro-milling can be expressed as

[0060]

[0061] Among them, F X , F Y are the cutting forces in the X and Y directions, F tn , F rn Tangential and radial cutting forces for the nth tooth, K t and K r respectively represent the tangential cutting force coefficient and the radial cutting force coefficient, C t and C r respectively represent the tangential damping force coefficient and the radial damping force coefficient, V c is the cutting speed, N represents the number of teeth of the micro-milling cutter, φ n represents the intrusion angle of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an active control method for an output feedback dynamic surface based on flutter of a micro-milling processing system. The active control method comprises the following steps: acquiring a dynamic model of tool vibration of the micro-milling processing system; on the basis of the dynamic model, loading a double-shaft giant magnetostrictive driver, and actively inhibiting the vibration of the cutter; constructing an ASI estimation inverse model to eliminate the hysteresis characteristic of the biaxial giant magnetostrictive actuator; and an output feedback self-adaptive controller for actively inhibiting flutter is obtained based on the design of a high-gain observer and a dynamic surface controller, so that active control on flutter of the micro-milling processing system is realized. According to the invention, the giant magnetostrictive actuator is adopted to actively control the regenerative flutter of the micro-milling system, so that the precision of micro-milling is improved, and the influence of the micro-milling on the micro-milling system is reduced; and the hysteresis characteristic of the giant magnetostrictive actuator is eliminated by constructing an ASI estimation inverse model, so that the control precision of the giant magnetostrictive actuator is greatly improved.

Description

technical field [0001] The invention belongs to the field of precision machining chatter control, in particular to an output feedback dynamic surface active control method based on the chatter of a micro-milling machining system. Background technique [0002] Micro milling is developed on the basis of macro milling. Compared to macro milling, micro milling has the ability to machine tiny parts and complex 3D geometries. Microdevices have the characteristics of good portability, low power consumption, small size and low cost, and have a wide range of needs in the fields of manufacturing, aerospace industry, electronic manufacturing, and optical instruments. Therefore, the research of micro-milling processing technology is of great significance to the manufacture of micro-parts. The main disadvantages of micro-milling are low material removal rates, short tool life and high tool holder costs. Regenerative chatter is one of the main causes of reduced surface quality and tool...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042Y02P90/02
Inventor 姜柳葛俊雄王祥武占侠赵金玉于同伟李正文车东起张秀宇
Owner SHENYANG INST OF ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products