A method and system are presented for improving the object's motion. Data indicative of a measured motion of the object is processed, and a relation between the measured motion and a predetermined correct motion is determined. This relation is indicative of an error in the measured motion. Based on the determined error, an operating signal may be generated to be used to apply an effecting force to the object. The operating signal is such that the effecting force, when applied to the object, will increase a value of the error in the object's motion.
