Abstract
After presenting briefly IP position control for a high-precision microfeed linear permanent magnet synchronous motor (LPMSM) servo system in this paper, we present a method of optimal preview feedforward compensation for this system to improve the tracking performance. To adapt the parameter variability of this system, we adopt Adaline to implement preview feedforward compensation. The input vector of Adaline is the preview steps,and its weight value is the preview feedforward coefficient. It is obvious that the weight has explicit physical meaning,and that the initial value of weight is not random but is the preview feedforward coefficient worked out under the rated condition, so the convergence speed of Adaline is very fast. To demonstrate the significance of this proposed method, simulation results of this application are carried out.
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