Printed circuit boards (PCBs) that represent a significant part of electronic waste are potential sources of material and energy. In the paper we focused on study of a cutting as an alternative method of conductive wa...
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ISBN:
(纸本)9783902734075
Printed circuit boards (PCBs) that represent a significant part of electronic waste are potential sources of material and energy. In the paper we focused on study of a cutting as an alternative method of conductive ways separating from plastic board as one of stages of the printed circuit board recycling procedure. High velocity of cutting belt is connected with enormous heat production. Due to the generation of high temperatures may lead to caking of separated components of metal and plastic materials. For this reason we formulated mathematic model of the cutting process and on the base we can determine of temperature fields in PCB materials during cutting. Of courses of them we can calculate the heat intensity and consequently the critical velocity of cut ting belt without damage of PCB materials.
Tunable linear time-varying filters are widely used in many adaptive and signal processing applications. In this paper we consider a problem of stability analysis of tunable time-varying band-pass filters and prove th...
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Tunable linear time-varying filters are widely used in many adaptive and signal processing applications. In this paper we consider a problem of stability analysis of tunable time-varying band-pass filters and prove that for a certain realization of these filters stability is ensured under assumption that tuning signal, namely a central frequency of the filter, is bounded and strictly above zero. An illustrative example of measurement noise attenuation is also given.
In this paper we propose a flux and position observer for permanent magnet synchronous motors when voltages, currents and rotor speed are available for measurement. We prove that this observer converges under weaker a...
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The contribution deals with optimizing of desalting process during soaking and application of automatic control via microcomputer technology in leather manufacturing industry on the base mathematics deterministic diff...
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The contribution deals with optimizing of desalting process during soaking and application of automatic control via microcomputer technology in leather manufacturing industry on the base mathematics deterministic diffusion model describing desalting *** of raw hides comprises a series of particular processes through which raw hide is progressively transformed into the *** a combination of mathematical modelling and laboratory testing by automatic control system we search an optimal procedure for desalting with regard to ecological and economic *** this paper we describe testing of desalting in the flow systems with flow rate automatic *** obtained results confirm the elimination of concentration shocks which cause the collapse of the surface layer texture of cured hide.
Analyzing the impact of software execution on the reliability of a complex digital system is an increasing challenging task. Current approaches mainly rely on time consuming fault injections experiments that prevent t...
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ISBN:
(纸本)9781467379069
Analyzing the impact of software execution on the reliability of a complex digital system is an increasing challenging task. Current approaches mainly rely on time consuming fault injections experiments that prevent their usage in the early stage of the design process, when fast estimations are required in order to take design decisions. To cope with these limitations, this paper proposes a statistical reliability analysis model based on Bayesian Networks. The proposed approach is able to estimate system reliability considering both the hardware and the software layer of a system, in presence of hardware transient and permanent faults. In fact, when digital system reliability is under analysis, hardware resources of the processor and instructions of program traces are employed to build a Bayesian Network. Finally, the probability of input errors to alter both the correct behavior of the system and the output of the program is computed. According to experimental results presented in this paper, it can be stated that Bayesian Network model is able to provide accurate reliability estimations in a very short period of time. As a consequence it can be a valid alternative to fault injection, especially in the early stage of the design.
We present a new output control approach for a class of MIMO systems with the input delay and unknown multisinusoidal disturbance affected the inputs and the outputs. We combine the well-known predictor feedback appro...
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Parallel projection based Single Emission Computed Tomography is a widely used nuclear imaging technique. Non-homogeneous attenuation medium and the distance dependent spacial resolution (DDSR) of the parallel imaging...
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The paper is concern with the investigation of control of Doubly Fed Induction Generator (DFIG) carried out by Rotor Side Converter (RSC) applied in wind energy harvest. Throughout the paper the principle of Stator Fl...
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The paper is concern with the investigation of control of Doubly Fed Induction Generator (DFIG) carried out by Rotor Side Converter (RSC) applied in wind energy harvest. Throughout the paper the principle of Stator Flux Oriented Vector control (SFOVC) is applied. In the first part of the paper a general slip-torque relation is derived with three torque components: one component is derived by the stator voltage, the other one by the d component and the third one by the q component of the rotor voltage space vector. In the second part of the paper, the dynamic behavior of the algorithm controlling the stator active and reactive power is simulated in open loop and closed loop.
Distance fields show up in many problems of 3D vision and rendering, for example, a volumetric fusion of depth images results in such a field. Distance fields obtained from measured values are inherently noisy, so its...
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Distance fields show up in many problems of 3D vision and rendering, for example, a volumetric fusion of depth images results in such a field. Distance fields obtained from measured values are inherently noisy, so its filtering is needed before isoparametric surfaces are extracted from them, and robust normal vector estimation also requires a local smoothing since differentiation is especially sensitive to noise. In this paper, we use regression to find a quadratic function that approximates the zero level surface of the distance field, and apply this both for filtering and normal vector estimation. We also present a computationally efficient method that exploits the regular structure of samples, the symmetry and separability of the weighting functions, and thus avoids the solution of larger linear equations, which otherwise would become necessary when regression is generally attacked. The algorithm is a part of a real-time volumetric fusion application running on the Graphics Processing Units (GPU).
The task of output feedback stabilization of a linear plant of arbitrary relative degree is solved under parametric uncertainty and matching periodic disturbances. Resulting controller was built coupling a high-gain o...
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