- 期刊
APPLICATION OF NEURAL NETWORK MODEL FOR PARAMETERS IDENTIFICATION OF NON-LINEAR DYNAMIC SYSTEM
摘要
A method for identification of parameters of a non-linear dynamic system, such as an induction motor with saturation effect taken into account, is presented in this paper. Adaptive identifier with structure similar to model of the system performs identification. This identifier can be regarded as a special neural network, therefore its adaptation is based on the gradient descent method and Back-Propagation well known in the neural networks theory. Parameters of electromagnetic subsystems were derived from the values of synaptic weights of the estimator after its adaptation. Testing was performed with simulations taking into account noise in measured quantities. Deviations of identified parameters in case of electrical parameters of the system were up to 1% of real values. Parameters of non-linear magnetizing curve were identified with deviations up to 6 % of real values. Identifier was able to follow sudden changes of rotor resistance, load torque and moment of inertia.
延伸閱讀
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