Linear Induction Motor Sensorless Speed Control Based on T-S Fuzzy Design
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چکیده
In this paper, a sensorless speed control for linear induction motors (LIMs) is developed based on fuzzy observer design. First, the LIMs is represented by a Takagi-Sugeno (T-S) fuzzy model. Next, the fuzzy observer is constructed to estimate the immeasurable states of mover speed and secondary flux, where the observer gains are obtained by solving a set of linear matrix inequalities (LMIs). To overcome the high nonlinearity, a two stage approach is applied to design the control law. Then, exponential convergence for both estimation error and tracking error is concluded. This indicates that the proposed sensorless controller possesses the feature of fast transient response and high robustness. Finally, simulations and experiments are carried out to verify the theoretical results and show satisfactory performance.
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تاریخ انتشار 2008