Generalized theory of synthesis of control systems of zero-order/instantaneous dynamics and infinite disturbance rejection ratio

A general method for the synthesis of control systems with zero-order dynamics and infinite disturbance rejection ratios is discussed. The simulation performance results for the DC and AC drive systems that are synthesized without closing the velocity and position feedback loops and that operate in the open loop mode with respect to the variables under the control are presented. It is shown that besides providing a generalized unified approach to the synthesis of control systems of nth order for zero-order dynamics and infinite disturbance rejection ratio, another advantage of the theory is in showing a possibility of using feedforward algorithms to achieve the zero-order dynamics and infinite disturbance rejection ratio while sensing/estimating some of the system state variables.<>