Three-dimensional position measurement system with disturbance observer

In this paper, the development method of eliminate disturbance from the three-dimensional position measurement device is proposed. Then, we use the control system with the disturbance observer. If we want measure in high accuracy in the real environment, we should think about error by disturbance. Therefore, we design the new control system for our measurement device with disturbance observer, and then aim at performance improvement of the device. Through several experiments, we show the usefulness of proposed control systems.