Realization of Position Sensor-less Control System Using Spring

This paper introduces a position sensor-less control technique making use of mechanical springs. The principle of the technique is based on achievement of observability. And it is different from other conventional position sensor-less control methods which often use pure integral calculation. And it proves that the presented method fits for practical use on real electro-mechanical systems by showing the experimental results. The implementation making best use of both electrical and mechanical characteristics show us the essence of motion control technique because of its good performance.