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Many geometric problems of interest to mathematical visualization applications involve changing structures requiring mathematical simulations, such as the moves that transform one knot into an equivalent knot. In this paper, we propose to explore a unique paradigm that makes use of self-deformable object models embedded in mathematical space, supplemented by energy-driven relaxation and user-defined...
Object tracking is always in the core status with the develop of robotics. In this paper, we proposed a novel tracking framework based on Spatio-Temporal Context tracking (STC) and Template-Matching algorithm(TM). STC tracking method is a fast and simplified tracking method that strongly dependent on the context region (the surrounding background of the target). Therefore, it cannot correct the tracking...
This paper establishes a hardware-in-the-loop realtime simulation system of long stator linear synchronous motor (LSM) drive with neutral point clamp (NPC) 3-level AC-DC-AC converter for high speed maglev train. The dynamic model of the LSM supplied by two parallel converters is described in detail. Hardware configuration, simulation algorithms and system model based on dSPACE real-time simulation...
Solution approaches to chance constrained programming (CCP) have been recently developed and applied in many areas for optimization under uncertainty. Due to the nonlinear model with multiple uncertain variables as well as multiple output constraints, CCP has not been directly applied to optimal power flow (OPF) under uncertainty. The objective of this paper is twofold. First, we introduce the CCP...
According to the distributed substation protection configuration and the principle of fault-clearance, a new model of fault diagnosis based on Petri net is proposed in this paper. In Petri net diagnosis model, all kinds of fault have a specific token which make it easily and clearly to find the fault location and understand the sequence of the fault events. The diagnostic is implemented by solving...
A novel real time simulation (RTS) system for high power rail traction is developed. It includes simulation models of high power back-to-back converter and a synchronous motor (SM). The system runs on a dSPACE based platform connected to real converter and motor controllers by actual hardware interface. An algorithm of decoupling discrete event of converters and continuous time systems of SM is proposed...
This paper analyzes the long-stator linear synchronous motor (LLSM) which is powered by two parallel converters. When LLSM is applied in high speed rail traffic, the long distance feeder cable has to be considered. Real time simulation is introduced to test the controller of the LLSM by using dSPACE real-time simulation platform. A real dynamic mathematical model utilizing MATLAB/SEVIULINK is built...
In this paper, propagation process of malicious code in computer networks are analyzed by discrete-state Markov model. Computer system without defense mechanism of virus in the networks can be classified: susceptible(S), quarantine(Q), infection(I) and health(H). But the state of computer system is varying. These varieties are only relative to the state at present, and are disrelated to the past state...
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