High Precision Hybyid Technology Using Dual-Stage of Linear Motor and Piezo-Actuator for Milling Machine

2007 ◽  
Author(s):  
B. M. Chung ◽  
I. J. Yeo ◽  
T. J. Ko ◽  
J. K. Park
Keyword(s):  
High Precision ◽  
High Speed ◽  
Piezo Actuator ◽  
Precision Positioning ◽  
Positional Accuracy ◽  
Linear Motors ◽  
Machining System ◽  
Dual Stage ◽  
Stage System ◽  
Long Stroke

High precision machining technology has become one of the important parts in the development of a precision machine. Such a machine requires high speed on a large workspace as well as high precision positioning. For machining systems having a long stroke with ultra precision, a dual-stage system including a global stage (coarse stage) and a micro stage (fine stage) is designed in this paper. Though linear motors have a long stroke and high precision feed drivers, they have some limitations for submicron positioning. Piezo-actuators with high precision also have severe disadvantage for the travel range, and the stroke is limited to a few microns. In the milling experiments, the positional accuracy has been readily achieved within 0.2 micron over the typical 20 mm stroke, and the path error over 2 micron was reduced within 0.2 micron. Therefore, this technique can be applied to develop high precision positioning and machining in the micro manufacturing and machining system.

Research and Development of a Test Platform for Synthetic Performance Parameters of Linear Motors

2011 ◽  
Vol 383-390 ◽  
pp. 4486-4491
Author(s):  
Zhong Quan Luan ◽  
Hu Yan Ji ◽  
Qing Dong Yang
Keyword(s):  
Research And Development ◽  
High Precision ◽  
Virtual Instrument ◽  
High Speed ◽  
Linear Motor ◽  
Cnc Machine Tools ◽  
Performance Parameters ◽  
Cnc Machine ◽  
Linear Motors ◽  
Test Platform

Linear Motors have been used more and more widely in high precision and high-speed linear motion for CNC machine tools, but uniform testing standards and methods for linear motor performance have not been established in China. Based on the virtual instrument software platform by means of computer technology, research and development of the test platform for synthetic performance parameters of linear motors can realize the rapid and accurate measurement, automatic storage and processing of linear-motor output, currents, positions, temperatures and other performance parameters. , Meanwhile, the platform can also provide the technical direction for design or improvement of linear motors, and technically support the formulation of related standards. Experiments showed that the test platform for synthetic performance parameters of linear motors can achieve high precision and automatic measurement to meet the testing requirements for synthetic performance of linear motors.

Predictive Position Control of Long-Stroke Planar Motors for High-Precision Positioning Applications

2021 ◽  
Vol 68 (1) ◽  
pp. 796-811
Author(s):  
Su-Dan Huang ◽  
Guang-Zhong Cao ◽  
Junqi Xu ◽  
Yukang Cui ◽  
Chao Wu ◽  
...  
Keyword(s):  
High Precision ◽  
Position Control ◽  
Precision Positioning ◽  
Long Stroke

scholarly journals A Collaborative Approach to Teach Modeling and Control of Smart Actuators in the Mechanical Engineering Curriculum

2007 ◽  
Author(s):  
Kam K. Leang ◽  
Gina Pannozzo ◽  
Qinze Zou ◽  
Santosh Devasia
Keyword(s):  
High Precision ◽  
Electric Motor ◽  
Mechanical Engineering ◽  
Piezo Actuator ◽  
Collaborative Approach ◽  
Precision Positioning ◽  
Modeling And Control ◽  
Teaching Module ◽  
Smart Actuators ◽  
And Control

In this article, we describe a collaborative approach to develop, integrate, and assess a teaching module on smart actuators specifically designed to embed topics in nano/bio technology into the undergraduate mechanical engineering (ME) curriculum. The collaboration involves three universities, each focusing on one specific aspect of the module. The module consists of lectures and laboratory activities that cover modeling and control of smart actuators for courses such as system dynamics, controls, and mechatronics. The integration of smart actuators — such as piezoelectric, shape memory alloy (SMA), and magnetostrictive based devices — into the ME curriculum is important because these devices are the workhorse in a multitude of nano and bio technologies. Thus, these devices play a critical role in the emerging areas, analogous to the benefits of the electric motor at the macroscale. But contrast to the well established coverage of the electric motor in the ME curriculum, modeling and control of smart actuators has yet to be systematically presented in core ME courses. The contribution of this article is presenting the systematic development, integration, and assessment of a teaching module on smart actuators. We first describe the design of lecture components using the piezo actuator as an example. The lecture materials cover core concepts within the framework of dynamics and controls, such as electromechanical coupling, dynamic response, nonlinear input-output behavior, and PID feedback control technique for high-precision positioning. Afterwards, we describe the development of a hands-on laboratory experiment designed to expose students to the basics of experimental modeling of the piezo actuator. The platform is also suited for basic control applications, and an example is presented to illustrate the application of piezo actuator control for high-precision positioning. The paper concludes with a discussion on how the module will be implemented and assessed at the three participating universities.

Modeling and Control of Ultra Precision Positioning System for a Grating Ruling Machine

2011 ◽  
Vol 110-116 ◽  
pp. 2647-2654
Author(s):  
Yuan Shen ◽  
Dong Cai Liu ◽  
Guo Fu Lian ◽  
Jie Guo ◽  
Chan Gan Zhu
Keyword(s):  
Hybrid Control ◽  
System Modeling ◽  
Positioning System ◽  
Precision Positioning ◽  
Positional Accuracy ◽  
Modeling And Control ◽  
Control Scheme ◽  
Positioning Stage ◽  
Ultra Precision ◽  
Long Stroke

This paper presents a system modeling based control scheme of an ultra precision positioning system for a grating ruling machine. Since the positioning system having a long stroke with ultra precision, the positioning system consists of a coarse positioning stage driven by a servo motor and a fine positioning stage driven by a piezoelectric ceramic. In order to improve positional accuracy and remove the noise components of motion, a hybrid control scheme based on the system modeling is implemented. Considering position-dependent and time-dependent behaviors of the stages, a model based LQ controller is utilized to the coarse stage and a PID feedback controller based on neural network is utilized to the fine stage. Experiment results reveal the efficient and robust of the control scheme and show that the positional accuracy has been readily achieved within 8.6 nm.

High-precision Positioning System using a Low-stiffness Dual Stage Actuator

2013 ◽  
Vol 46 (5) ◽  
pp. 20-27 ◽  
Author(s):  
Shingo Ito ◽  
Juergen Steininger ◽  
Peter I. Chang ◽  
Georg Schitter
Keyword(s):  
High Precision ◽  
Positioning System ◽  
Precision Positioning ◽  
Dual Stage ◽  
Low Stiffness ◽  
Dual Stage Actuator

scholarly journals Comparative Analysis among Single-Stage, Dual-Stage, and Triple-Stage Actuator Systems Applied to a Hard Disk Drive Servo System

Actuators ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 65 ◽  
Author(s):  
Alamgir Hossain ◽  
Md. Arifur Rahman
Keyword(s):  
Hard Disk Drive ◽  
High Precision ◽  
Position Control ◽  
Servo System ◽  
Hard Disk ◽  
Disk Drive ◽  
System A ◽  
Dual Stage ◽  
Stage System ◽  
Actuation Systems

In modern times, the design and optimization of different actuator systems for controlling a high-precision position control system represent a popular interdisciplinary research area. Initially, only single-stage actuator systems were used to control most of the motion control applications. Currently, dual-stage actuation systems are widely applied to high-precision position control systems such as hard disk drive (HDD) servo systems. In the dual-stage system, a voice coil motor (VCM) actuator is used as the primary stage and a piezoelectric micro-actuator is applied as the secondary stage. However, a dual-stage control architecture does not show significant performance improvements to achieve the next-generation high-capacity HDD servo system. Research continues on how to fabricate a tertiary actuator for a triple-stage HDD servo system. A thermal positioning controller (TPC) actuator is considered promising as the tertiary stage. The triple-stage system aims to achieve greater bandwidth, track density, and disk speed, with minimum sensitivity and greater error minimization. In this work, these three actuation systems with different combinations of proportional plus integral (PI), proportional plus derivative (PD), and proportional plus integral plus derivative (PID) controller, lag-lead controller, lag filter, and inverse lead plus a PI controller were designed and analyzed through simulation to achieve high-precision positioning. The comparative analyses were done on the MATLAB/Simulink simulation platform.

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