2003 Volume 16 Issue 3 Pages 111-117
In this report a design method for a servo controller with a disturbance feedforward is presented. A conventional controller with feedforward often generates an excess output as a result of the addition of the integrator signal and the feedforward signal. The additional feedback can be inserted to canncel the integrator signal. The controller can be implemented by the same configuration as a two degrees-of-freedom LQI servo system. Experimental results show availability and practicablity to a real plant.