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Focusing on fault diagnosis extraction of gearbox, a novel approach is proposed according to the signal characteristics based on the adaptive morphological filter. Traditional linear filters have some limitations when extracting nonlinear features. As a nonlinear analysis method, the morphological filter has better performance on detail reservation and noise reduction, and can describe nonlinear morphological...
The predictive maintenance policy of deteriorating equipment is studied in the paper. A semi-Markov decision process (SMDP) is utilized to modeling the deteriorating equipment. The model includes the inspection state which assumes equipment can fail due to both deterioration and random causes. The alternative action includes do nothing, do minor maintenance and do major maintenance after the inspection...
Maintenance policy has significant effects on the demand of spare part and the total cost of maintenance. In this paper, the multi-single inventory control model of spare part is considered based on the group replacement policy. The mathematical model and corresponding calculation algorithm are proposed according to the problem description. An example is introduced and the simulation result shows...
In this paper, scanning parameters optimization (SPO), a new method for parameters tuning of digital proportional-integral (PI) controller is proposed. It can automatically search for the optimal parameter group which contains both proportional action coefficient and integral action coefficient that fits the user's design from a set of candidate groups by scanning their performance indices, such as...
We propose a novel synthesis technique for reversible logic based on ant colony optimization (ACO). In our ACO-based approach, reversible logic synthesis is formulated as a best-path search problem, where artificial ants, starting from their nest (reversible function output), attempt to find the best path to the food source (reversible function input). The experimental results have demonstrated superior...
In this paper, a novel heuristic for abstraction-guided state justification is proposed based on ant colony optimization (ACO). A probabilistic state transition model is developed to help formulate the state justification problem as a searching scheme of artificial ants. The amount of pheromone left by the ants is directly proportional to the quality of the search so that it can serve as an effective...
Searching Steiner tree problem is important for optimizing the multicast routing in communication networks. In this paper, we study the problem of searching weight constrained minimum cost Steiner tree problem in Halin networks where each edge has a nonnegative integer cost and a nonnegative integer weight. It has been proved to be NP hard. In this paper, we give a pseudo algorithm to find the constrained...
We address the problem of 3D model based vehicle localization in calibrated traffic scenes. A wire-frame vehicle model is set up as prior information and an efficient local gradient based method is proposed to evaluate the fitness between the projection of 3D model and image data, which illustrates smooth optimization surface and more conspicuous peak with low computational cost. Gradient decent is...
An interconnect-driven layout-aware multiple scan tree synthesis methodology is proposed in this paper. Multiple scan trees greatly reduce test data volume and test application time. However, previous researches on scan tree synthesis rarely considered routing length issues, and hence create scan trees with long routing paths. The proposed algorithm effectively considers both test compression rate...
There is a strong need now for compilers of embedded systems to find effective ways of optimizing series of loop-nests, wherein majority of the memory references occur in the form of multi-dimensional arrays, indexed primarily with linear functions of iterators and parameterized constants. The reason for this are the new wireless standards, e.g. 802.11n, WiMAX, Bluetooth, HIPERMAN, 3GPP-LTE and WiBro,...
CS (consignment stock) policy is a kind of joint vendor and buyer policy to the management of inventories in supply chains. In this paper, we develop production-inventory system models of consignment stock to determine optimal integrated vendor buyer inventory policy, taking into account the views of single-buyer and single-vendor based on Hill's (1997) model and Braglia and Zavanella's (2003) models...
This paper describes and characterizes an electroporation microchip device and system optimization. This device combines microfabrication techniques, logic circuit, and electrophoresis design to create a multi-function gene transfection device that can be used in a number of medical science research applications. This device consists of two components: a cell-accommodation cavity and electrodes for...
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