A new style controller based on classical dynamics

By analyzing the information and motion regularity of system, a new style controller based on classical dynamics is constructed, and by calculating in theory, it is proved that the alpha - beta - gamma - thetas filter is a third order state observer for a high-order system, if the high-order system can be approximated as a second order system. At the same time, a new style controller is designed on the basic of classical dynamics equation; the controller can be explained: the controlled plant output locus is controlled and led to the desired output locus using feedback control of position, velocity and acceleration of the new style controller, which can improve performances and qualities of control system.