Development of a virtual shapemeter based on a shape control model for continuous annealing

Abstract

Purpose Continuous annealing (CA) units usually lack a physical shapemeter; consequently, real-time display and closed-loop control of the strip shape are impossible to achieve. Design/methodology/approach A shape model for the CA process is established in this study. Specifically, a virtual shapemeter and closed-loop control system based on the advanced parameter acquisition system and information transmission of CA units are developed in C++ programming language. This system realises real-time dynamic shape display, closed-loop control and shape prediction by collecting raw data of steel coils and parameters during CA. Findings Field test results show that the shape predicted by the virtual shapemeter coincides with the measured shape by over 90 per cent, which fully meets the precision requirement of industrial applications. Originality/value Moreover, shape quality is effectively improved without increasing hardware investments.

Quantitative calculation of electromagnetic scattering characteristics from drag plate of aircraft afterbody

“…The structural design of sawtooth edge shape and foam core enables multiple scattering of incident wave in the shape of corner reflector, thus reducing the radar cross section (RCS) of the target (Choi et al, 2020). A two-dimensional multi segment wing with hinged flaps under the spoiler is built (Liu et al, 2021;LV. et al, 2020;Li, 2019;Saleem and Saifullah, 2021;Ye et al, 2018), and the relevant aerodynamic characteristics are studied by using computational fluid dynamics method.…”

“…A two-dimensional multi segment wing with hinged flaps under the spoiler is built (Liu et al. , 2021; LV. et al ., 2020; Li, 2019; Saleem and Saifullah, 2021; Ye et al ., 2018), and the relevant aerodynamic characteristics are studied by using computational fluid dynamics method.…”