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It is important for high performance AC drive systems to be robust against motor parameters' variation and load disturbances. Taking account of the model uncertainty and nonlinearity, a rotor flux observer based on extend Kalman filter (EKF) technology is proposed in a direct vector control system of asynchronous motor. In this observer, the rotor resistance is taken as an extended state. Then the...
Reconstruction algorithm is essential to reconstruct temperature field image in boiler temperature field survey. This article puts forward a new algorithm based on RBF neural network. The algorithm firstly does discrete cosine inverse transform to temperature distribution T(x,y) of 'typical section' in the boiler to construct mapping relationship between low step item coefficients vector and average...
Supply chain management is increasingly important in modern enterprises. Various information systems have been developed in the domain of services-oriented supply chain management. But as the complexity of supply chain, there are still two big problems. On the one hand, most of the traditional supply chain management systems can not really achieve integration among different organizations. On the...
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