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Accurate and efficient power grid analysis has become increasingly important in semiconductors chip design and verification. It is one of the most computationally challenging tasks in high performance processor design analysis. Due to the extremely large memory required to store and manipulate the design data, it is no longer possible to accommodate the analysis using one or more serial processes...
Over the last few decades, feature selection has been a hot research area in pattern recognition and machine learning, and many famous feature selection algorithms have been proposed. Among them, feature selection using positive approximation(FSPA) is an accelerator for traditional rough set based feature selection algorithms, which can significantly reduce the running time. However, FSPA still cannot...
The prevailing circuit simulation paradigm heavily relies on extraction to perform circuit simulation. In addition, no linear complexity has been reported by existing circuit simulation approaches. In this work, we develop a circuit simulator that bypasses the step of extraction. It produces an RLC (resistor-inductor-capacitor) representation of the linear network without any numerical computation...
In this paper, the basic feature of particle system of coal stream is analyzed, the property model of coal stream particle is established by discrete element method according to its characteristics and a moving model is constructed by a simplified Hertz-Mindlin contact, and the coal stream movement is simulated with particle system, which plays an important role in assuring the fidelity and integrality...
In this paper, the problems on the model predictive control (MPC) of nonlinear systems are studied. A direct weight optimization (DWO) method based predictive control for nonlinear systems is presented. The approach gives a direct and effective predicting method and uses linear method to get the control law which avoids the complicated nonlinear optimization. The simulation result shows the efficiency...
A fast electromagnetic simulator is developed to co-simulate the linear network and nonlinear circuits in an integrated circuit system. In this simulator, the physical layout of a large-scale linear network is rigorously reduced to a single surface or a few surfaces where the nonlinear circuits are located. The reduction is done analytically, and, hence, the computational overhead is minimal. The...
The effects of idler spacing selection on belt conveyor power consumption have been discussed. A mathematical model to analyze the relation between total life cycle cost and belt, idler sets and driver units is presented, which is a way of reducing belt conveyor investment costs. Based on the calculation of belt tension and power consumption, a large long belt conveyor with typical three-roll troughing...
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