Dynamic Modeling for Machine Tool Thermal Error Compensation  

Oleh:

Hong, Yang ; Jun, Ni

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 125 no. 2 (May 2003), page 245-254.
Topik: thermal field; dynamic modeling; machine tool; thermal error; compensation

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ93.4 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

This paper proposes a new thermal error modeling methodology called the Dynamic Thermal Error Modeling which improves the accuracy and robustness of the machine tool thermal error model. The characteristics of the thermoelastic system are investigated from the dynamic system viewpoint. The pseudo - hysteresis effect is revealed to be the major factor causing poor robustness of the conventional static thermal error model. System identification theory is applied to build the dynamic thermal error model for machine tool thermal error on - line prediction. The modeling procedure for the linear Output Error (OE) model is illustrated using simulation work for both one - dimensional spindle and two -d imensional machine structure thermal deformations. Model performance evaluation through spindle experiments shows that the thermal error dynamic model has advantages over the conventional static model in terms of model accuracy and robustness.

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