Lateral deformation of sliver in roller drafting zone.

Internal Model Control of Textile Sliver Drafting Process

The paper is focused on modelling and control of an important textile engineering process: the textile sliver drafting process. This process plays a crucial role in textile production chain because low irregularity of drafted sliver is essential for production of high quality yarn. It is shown that this process can be modelled as a nonlinear time delay system with distributed delays. This model...

Time Delay Systems Applications in Textile Industry – Modelling of Sliver Drafting Process

Abstract: The paper deals with an important textile engineering process: the textile sliver drafting process. It is shown that this process can be modelled as a non-linear time delay system with distributed delays. To convert it into a form more suitable for control purposes, this model is linearized and distributed delays are converted into equivalent lumped delay system. An easy to apply meth...

Changes of Sliver Irregularity in

A theoretical calculation is made to simulate the effect of drafting upon the sliver irregularity in two-zone drafting of three-over-three roller system. Two types of slivers, i.e., random sliver and optional sliver are considered. The effects of sliver count, staple fiber length, fineness of fiber, draft distribution between two drafting zones, maximal moving distance and distribution type of ...

Kinematics of Transpressional Deformation Zones in the Urmia Fault Zone, Northwest Iran

Metamorphic and various intrusive rocks in the Urmia area are located in a transpressed active continental margin. These complexes in the Zagros orogen were deformed during an oblique convergence scenario between the Arabian and Sanandaj–Sirjan blocks in NW Iran. The Urmia area contains both NW-SE striking dextral strike-slip and SW verging NE dipping ductile reverse shear fabrics. Ductile shea...

Drafting.