Structural, morphological and dielectric analyses of La1 − xSrxFeO3 solid solutions

Lataoui, R.; Triki, A.; Hcini, Sobhi; Zemni, S.; Dhahri, J.; Kanoun, Olfa

doi:10.1007/s00339-021-04825-x

Cited by 4 publications

(1 citation statement)

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“…Measurement of the phase difference and the amplitude, i.e., the impedance, permits analysis of the electrode process in relation to contributions from diffusion, kinetics, Debye effects, coupled homogeneous reactions, etc. [27,28].…”

Section: Impedance Spectroscopymentioning

confidence: 99%

Impedance Spectroscopy Sensing Material Properties for Self-Tuning Ratio Control in Pharmaceutical Industry

et al. 2022

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Following the paradigm shift in the pharmaceutical industry from batch to continuous production, additional instrumentation and revision of control strategies to optimize material flow throughout the downstream processes are required. Tableting manufacturing is one of the most productive in terms of turnover and investment into new sensor technologies is an important decision-making step. This paper proposes a continuous solution to detect changes in material properties, and a control algorithm to aid in minimizing risk at the end-product line. Some of the sub-processes involved in tableting manufacturing perform changes in powder and liquid mixtures, granulation, density, therefore changing flow conditions of the raw material. Using impedance spectroscopy in a continuous sensing and monitoring context, it is possible to perform online identification of generalized (fractional) order parametric models where the coefficients are correlated to changes in material properties. The model parameters are then included in a self-tuning control gain used in ratio control as part of the local process control loop. The solution proposed here is easy to implement and poses a significant added value to the current state of art in pharmaceutical manufacturing technologies.

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Section: Impedance Spectroscopymentioning

confidence: 99%