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The problem of partner selection for virtual enterprise recombination is resolved by the parameterized service matching in this paper. A process model for this kind of service matching is established by means of adopting Petri net. Service and request in matching are formally described and a mathematical model is formulated for the matching. Based on this model, relevant service matching algorithm...
Variety of board-fins are widely used in the industrial field, however, many problems such as technical complexity, fins falling, high rate of rejection, high cost and so on exist in the manufacturing methods available. In this paper, aiming at the problems existed in present methods, a new rolling technology used to shape board-fins was developed based on the traditional rolling principle. The forming...
To monitor the tool wear states in drilling, a new method is proposed to obtain the signal characteristics based on the wavelet transformation. The method can reflect the tool wear states by using discrete dyadic wavelet transform. The cutting force signals of cutting process are decomposed; and the values of the decomposed signals in different scales are taken as the feature vectors. The pattern...
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