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Machining accuracy enhancement using...

Jiang, Ye.

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Machining accuracy enhancement using an iterative learning control approach.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Machining accuracy enhancement using an iterative learning control approach./
Author:	Jiang, Ye.
Description:	151 p.
Notes:	Source: Dissertation Abstracts International, Volume: 69-02, Section: B, page: 1250.
Contained By:	Dissertation Abstracts International69-02B.
Subject:	Engineering, Industrial. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR36703
ISBN:	9780494367032

Machining accuracy enhancement using an iterative learning control approach.
Jiang, Ye.

Machining accuracy enhancement using an iterative learning control approach. - 151 p.

Source: Dissertation Abstracts International, Volume: 69-02, Section: B, page: 1250.

Thesis (Ph.D.)--The University of Western Ontario (Canada), 2007.

Key words. Machining error compensation, iterative learning control, P-type iterative learning, repetitive machining process, correction interpolator, CNC machine tool.

ISBN: 9780494367032Subjects--Topical Terms:

626639
Engineering, Industrial.

Machining accuracy enhancement using an iterative learning control approach.
LDR:02833nam 2200265 a 45 001 954744
005 20110622
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020 $a 9780494367032
035 $a (UMI)AAINR36703
035 $a AAINR36703
040 $a UMI $c UMI
100 1 $a Jiang, Ye. $3 1278202
245 1 0 $a Machining accuracy enhancement using an iterative learning control approach.
300 $a 151 p.
500 $a Source: Dissertation Abstracts International, Volume: 69-02, Section: B, page: 1250.
502 $a Thesis (Ph.D.)--The University of Western Ontario (Canada), 2007.
520 $a Key words. Machining error compensation, iterative learning control, P-type iterative learning, repetitive machining process, correction interpolator, CNC machine tool.
520 $a Error compensation is a cost-effective way to improve the machining accuracy on the conventional CNC machine tools. However, the traditional error compensation strategies usually involve the processes which are deemed to be too complex in practice. Due to its ability to achieve high performance with less modeling effort, the iterative learning control (ILC) is adopted in this research to progressively improve die machining accuracy in the repetitive machining process. The learning algorithm is developed based on the easily obtained system frequency response to ensure that the machining error decays monotonically as quickly as possible. An error correction framework is proposed where one or more separate correction interpolators are designed specifically to perform the error correction. It makes the implementation of the proposed error compensation scheme less intrusive to the existing CNC machine tool and is flexible to obtain errors from various sources. A synchronization algorithm defined along the desired cutting tool trajectory is developed so that the regular machining process and the correction actions can be harmonized accurately.
520 $a Experiments of repetitive machining of a circle on a precision horizontal CNC machine tool with an open architecture controller (OAC) are carried out. The results show that the root mean square (RMS) value of the machining error has been reduced by more than 85% in the first compensated machining cycle and is further reduced in subsequent cycles. The physical implementation of the proposed scheme on the machine tool needs very little modification to the software of the OAC and causes no interference with the regular machining process. It can be concluded that the machining accuracy enhancement scheme using the ILC approach is both technically sound and practically feasible.
590 $a School code: 0784.
650 4 $a Engineering, Industrial. $3 626639
690 $a 0546
710 2 $a The University of Western Ontario (Canada). $3 1017622
773 0 $t Dissertation Abstracts International $g 69-02B.
790 $a 0784
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR36703