Application of Fieldbus Technology in Mechatronic Systems

Today’s fiercely competitive market enforced the industries to rapidly deliver quality products to meet the societal demand. Many of the production cells in industry have already been equipped with automated machineries and systems. Out of many machine types, spindle machines are commonly employed in the processes for machining, micromachining, milling, data reading/writing and so on. Employment of high-speed spindle systems (HSSS) is eventually needed in order to demand for increased productivity. Moreover, performance driven state-of-the-art design techniques, methodology and tools must be adopted for building machineries. Potential research and developments in terms of design, modeling and analysis, optimization, performance etc. of rotary machines have been reported since two decades. The study especially on HSSS is rather limited in the sense that a suitable sophisticated design strategy has not been developed so far. The works in this context apparently, concentrate on specific aspects of the rotary systems. For example, Shoda et al studied the performance of the ceramic ball bearings under high-speed condition (Shoda et al. 1997). Others (Jones 1960)-(Shin 1992) have also developed theories and models in the context of studying verities of bearing types and their operational ranges. Harris’s work computes the effects of preload bearing (Harris). Bossmanns derived the thermo-mechanical behavior of the spindles for milling applications (Bossmanns 2001). Boglietti et al, establishes a test procedure for studying the behavior of high-speed drives (Boglietti et al. 1995). Kim and Lee investigated the thermal effects with regard to cylindrical housing of the high-speed rotating machine. Although, Bossmanns described a systematic approach in the context of characterization of flow of power within HSSS through test procedure on special test rigs, however, a real design strategy in terms of mechanical design, multi-domain modeling, control methodology, diagnostics and prognostics, and many other design interfacing requirements including the use of state-of-the-art tools and techniques are missing. As a matter of fact there is a strong needs to investigate the design strategy, since the HSSS are no longer simply the mechanical systems rather, they are mechatronic in nature.

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