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This study explores for the first time the use of the Evolutionary Kinetic Monte Carlo method (EKMC) to describe the etch rate anisotropy of quartz and three-dimensional microstructures and topography etched on Z-cut, AT-cut and BT-cut substrates using some mask patterns. Based on the evolutionary algorithm, the EKMC can properly transform the (facet specific) macroscopic etch rates of several crystal...
The Prophet routing algorithm is a multi-copy algorithm which is based on historical information and transitive probability, which selects the relay node with a high probability to encounter the destination node. However, the selection of a relay node does not consider the current congestion level of node. Even if the current relay node has a high delivery probability to the destination node, it may...
To improve the network invulnerability, most strategies are designed for optimizing the network capacity to prevent the cascade overload without considering the network robust under external attacks. To address this problem, based on the classical scale-free network model, this paper proposed a link-based network topology optimization algorithm referred as LNTO. The algorithm removed links among hub...
Failure mode and effects analysis (FMEA) is widely used in the product design process of various fields, and is of great significance for the product reliability, testability and safety. Aimed at the problems of FMEA existing in the electronic product design and manufacturing process, this paper proposed to carry out FMEA work based EDA simulation, through the establishment of electronic design automation...
In recent years, with the rapid development of renewable energy, power energy storage has become a bottom neck of its development, and superconducting magnetic energy storage (SMES) seems to be a viable solution. A topology based on common DC voltage bus is proposed for high power voltage source converter (VSC)-SMES. The mathematical model of SMES is constructed and the detailed control strategy is...
Social force model is a widely-used crowd model that simulates pedestrian dynamics based on Newtonian mechanics. It combines physical forces (caused by body compression) with psychological repulsive forces (caused by the pedestrians' inner desire to keep a distance from others or walls) to represent the intentional collision avoidance mechanism. The model can reproduce many collective phenomena (e...
The problem of on-line parameter identification was discussed for linear multivariable discrete time stochastic systems with communication access constraints. Based on the concept of parameter estimability defined with mutual information, a condition for identifiability was proved under the assumption that the time-varying parameter can be modeled as a Gauss-Markov process, and the sensors access...
The parameter optimization for parallel hydraulic hybrid vehicle(PHHV) system has a significant impact on the vehicle dynamic performance, fuel economy and emission. In this article, several factors affecting system efficiency are used as the objective functions, system parameters are used as the independent variables, and the multi-objective optimization process is compiled in MATLAB. The process...
In this paper, an ultra-low power biopotential acquisition system is presented. The proposed system contains a tunable band-pass amplifier, a VGA with strong capacitive driving capability and a successive approximation ADC. To make the gain and bandwidth programmable, a T-switch with huge cut-off resistor is utilized to eliminate the effect of low frequency doublets. An improved low kick-back noise...
Electric Power Steering (EPS) has important significance in improving the auto's dynamic and static performances. This paper deals with the mathematical model and characteristic curves of EPS System. First, the principle and structure of EPS are discussed. Then the characteristics of EPS system are analyzed, including the typical power curves which deal the relationship of the assist torque and the...
Aiming at the RIP (routing information protocol) canpsilat dealing with network failures effectively, causing significant forwarding discontinuity after a failure. The drawback with this protocol is that it need to trade off routing stability and forwarding continuity. To improve failure resiliency without jeopardizing routing stability, we propose a fast local rerouting based on RIP called FR-RIP...
The fact of a dominant resonance frequency existed in the transient process of short-circuit fault is discovered by analyzing transient characteristics of single-phase earthed fault. At this frequency, the amplitude of zero modal current in faulty feeder is much larger than that in healthy feeder, and their polarity is approximately opposite. Transient dominant frequency zero modal current in faulty...
This paper presents a new algorithm for underwater geomagnetic-matching localization. The idea is rooted from image registration and workpiece localization problem. One essential elements of the new algorithm is an algorithm to solve transformation between two point sets. A related problem to this is fitting of two point sets (FTPS). In this paper, FTPS is first introduced and formulated to a least-squares...
To investigate the effects of phosphene array irregularity in visual prostheses, a model of phosphenes' positional uncertainty was devised and two different image down-sampling schemes, adapting and non-adapting, were proposed. Based on a simulation system, visual acuity tests were given to four normally sighted subjects under seven degrees of array irregularity and the two down-sampling schemes....
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