1. A System Identification and Implementation of a Soft Sensor for Freeform Bending
- Author
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Sophie Charlotte Stebner, Daniel Maier, Ahmed Ismail, Shubham Balyan, Michael Dölz, Boris Lohmann, Wolfram Volk, and Sebastian Münstermann
- Subjects
soft sensor ,extended Kalman filter ,freeform bending ,residual hoop stresses ,hardness ,control-loop ,Technology ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Microscopy ,QH201-278.5 ,Descriptive and experimental mechanics ,QC120-168.85 - Abstract
The primary goal of this study is the formulation of a soft sensor that predicts industrially relevant mechanical properties for freeform bending. This serves as the foundation of a closed-loop property control. It is hypothesized that by inline measurement of hardness, predictions regarding residual hoop stresses, local strength and strain level can be achieved. A novel hardness-based correlation scheme is introduced, which is implemented into an extended Kalman filter (EKF) and allows an inline prediction of local strength, residual hoop stresses and plasticity. Furthermore, the ultrasonic contact impedance (UCI) method is validated as a suitable inline measuring solution.
- Published
- 2021
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