Composite backward control for GMA and its application in high precision machining of variable ellipse pinhole

ZHAI Peng; XIAO Bo-han; HE Kai; ZHANG Kun

doi:10.3788/OPE.20162406.1389

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Composite backward control for GMA and its application in high precision machining of variable ellipse pinhole

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-08-13

- Composite backward control for GMA and its application in high precision machining of variable ellipse pinhole
- Optics and Precision Engineering Vol. 24, Issue 6, Pages: 1389-1398(2016)
- 作者机构：
  
  山东大学(威海)机电与信息工程学院,山东威海,264209
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162406.1389
  CLC： TG53
- Received：11 January 2016，
  
  Revised：19 February 2016，
  
  Published：25 June 2016
- 稿件说明：
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翟鹏, 肖博涵, 贺凯等. 超磁致伸缩致动器的复合反馈控制及其在变椭圆销孔精密加工中的应用[J]. 光学精密工程, 2016,24(6): 1389-1398

ZHAI Peng, XIAO Bo-han, HE Kai etc. Composite backward control for GMA and its application in high precision machining of variable ellipse pinhole[J]. Editorial Office of Optics and Precision Engineering, 2016,24(6): 1389-1398
翟鹏, 肖博涵, 贺凯等. 超磁致伸缩致动器的复合反馈控制及其在变椭圆销孔精密加工中的应用[J]. 光学精密工程, 2016,24(6): 1389-1398 DOI： 10.3788/OPE.20162406.1389.

ZHAI Peng, XIAO Bo-han, HE Kai etc. Composite backward control for GMA and its application in high precision machining of variable ellipse pinhole[J]. Editorial Office of Optics and Precision Engineering, 2016,24(6): 1389-1398 DOI： 10.3788/OPE.20162406.1389.

摘要

针对非对称性销孔的镗削加工，研究了用于高负荷孔精密镗削装置的超磁致伸缩致动器（GMA）的相关控制。考虑GMA的迟滞非线性，分析了准静态改进型Prandtl-Ishlinskii（P-I）模型的数学机理；为提高其动态适用频域和控制精度，提出了结合相角前馈补偿的动态改进型P-I模型，获得了满意的控制效果。结合PID反馈控制搭建的闭环控制实验结果显示，GMA 的迟滞非线性由补偿前的14.5 %~67.2 %减小到1.5%~4.3%，有效降低了迟滞系统的非线性误差。在此基础上进行了椭圆销孔试镗削实验，结果显示其椭圆度均符合图纸要求，验证了补偿方法的正确性。本文的研究为实现高负荷异形孔的精密加工提供了新方法。

Abstract

For high precision machining of asymmetric boring holes

a control technology of the Giant Magnetostictive Actuator (GMA) used in a precision high-load pinhole boring device was explored. According to the hysteresis nonlinearity of the GMA

the mathematic mechanism of the quasi static modified Prandtl-Ishlinskii(P-I) model was analyzed briefly. To broaden the application frequency domain and to improve the precision of quasi static modified P-I model

a modified dynamic P-I model was proposed by combining with hysteresis phase feedforword compensation

and good control results were obtained. The experiment of back loop control system based on the dynamic modified P-I model and a PID controller was conducted. Results after compensation show that the hysteresis nonlinearity of GMA has reduced from 14.5 %-67.2 % to 1.5%- 4.3% at the case of open loop control

which controls the nonlinear error of the hysteresis . Moreover

a boring experiment for an oval pin hole was performed

the obtained ovality accords with the requirement of drawings

and verifies the feasibility of the proposed method. The research in this paper provides a new method for machining high-load oval pinholes.

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Keywords

references

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