Multi-model identification to multi-motor synchronous system

A first principle model of multi-motor synchronous system was built based on field orientation and the system present complex characteristics such as multivariable,nonlinear and coupling.According to this complex system which can not be controlled effectively by the first principal model,a three motor asynchronous system was researched and decomposed into the models of speed and tension.The relationship between inputs and outputs of speed and tension was found.Furthermore,sample of system was clustered by Satisfactory Fuzzy c-Mean(SCFM)Clustering Algorithm,and the parameters of local models and scheduling function were identified.The global model of speed and tension were calculated by those local models.The results of application with the identification algorithm to simulation illustrate the performance of the proposed algorithm.