Industry 4.0 and Cyber Physical Production Systems (CPPS) are often discussed and partially already sold. One important feature of CPPS is fault tolerance and as a consequence self-configuration and restart to increase Overall Equipment Effectiveness. To understand this challenge at first the state of the art of fault handling in industrial automated production systems (aPS) is discussed as a result of a case study analysis in eight companies developing aPS. In the next step, metrics to evaluate the concept of self-configuration and restart for aPS focusing on real-time capabilities, fault coverage and effort to increase fault coverage are proposed. Finally, two different lab size case studies prove the applicability of the concepts of self-configuration, restart and the proposed metrics.
Spin effects for electron-impact excitation of Hg(63P,) have been studied for small scattering angles (e,s30") and energies of 15, 30 and 50 eV. In an electron-photon coincidence experiment the linear polarisation components P, and P, (for photon emission angles perpendicular and parallel to the scattering plane, respectively) have been measured from which the relative spin-flip cross section poo could be determined. It has been found however, that reliable results are obtained only if various corrections, which have not been discussed in previous investigations, are taken into account. With these corrections the data agree well with predictions of widely accepted theoretical models. As an example, this is demonstrated by comparing the experimental data with a DWBA calculation. In particular poo is zero with the experimental accuracy for small scattering angles (Oc< IO") at E = 50 eV.
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