A method of controlling a surgical system using position feedback control, includes selectively operating a cutter having a cutting mechanism, with the cutting mechanism having an inner cutting tube and an outer cutting tube. The outer cutting tube has a tissue-receiving port formed therein, and the inner cutting tube has a cutting edge axially displaceable relative the tissue receiving port to cut tissue therein. The method also includes sensing the displacement of the inner cutting tube relative to the outer cutting tube with a sensor and changing operational timing of a probe driver based on the displacement sensed by the sensor.
