The behavior of the rolling rotor switched reluctance motor (RRSRM) is strongly determined by the properties and mode of operation ofthe magnetic field [1]. The rotor is moved by the magnetic force in the stator, where this magnetic field depends on the varying air gap between the rotor and the stator. The aim ofthis work is the technical-mathematical description ofan RRSRM, the highlights of which describe the motor and the fundamental mode of operation. Thus, separate domains will be described, implemented and analyzed afterwards. These interdisciplinary effects influence the mode of operation and consequently the application of the RRSRM [2]. This multiphysical implementation and the simulation show many interconnections between the domains and the forthcoming works are affected by this technical expertise [3]. The design and the properties of the magnetic field determine the operation of the RRSRM and consequently the interactions between the electrical and mechanic al domains [2]. Therefore the magnetic field is described and implemented as a nonlinear network. The nonlinearity affects strongly the behavior of the rolling rotor switched reluctance motor. Furthermore, the operation of an RRSRM is determined by the coupling of the electric, magnetic and mechanic domains [3]. For these reasons a multi-physical description is implemented using MODELICA [4], so an interdisciplinary analysis of the RRSRM is made possible and this is the basis for future researches. Only with an exact technical-mathematical model it is possible to design new drive concepts [5]

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Until now the efficient identification of unknown CMOS integrated circuits (ICs) has attracted a lot of interest. In particular, different invasive and non-invasive strategies have been developed for IC identification. However, invasive procedures always lead to the destruction of device under test. The non-invasive approaches published so far have the disadvantage that ICs are analysed by using very complex and time consuming algorithms. This paper presents a novel non-invasive procedure to determine nonlinear binary multi-input multi-output (MIMO) ICs solely by their input-output behaviour. The algorithm presented in this paper identifies unknown ICs by the abstraction of traditional automata theory. The overall identification procedure was simulated and fully tested on IEEE ISCAS benchmark models as well as user defined models of real ICs. The results are presented in this paper. For every circuit analysed the function has been successfully determined by the proposed identification procedure.

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This paper presents the operation and the implementation of novel fixed point square root algorithms with an input range of 0 to 1 into CMOS. These algorithms are referred to as non-restoring and restoring algorithm and were compared with a square root implementation into a lookup table (LUT). The power consumption, the area consumption and the propagation delay were investigated and the results of all three algorithms are discussed in relation to their bitwidth for expedient implementation. These results enable hardware designers a fast exploration of the most suitable algorithm for a given application. I.