전정기관 자극용 회전자극기를 위한 PMSM의 정밀 속도제어

A new control method for precision robust speed control of a PMSM(Permanent Magnet Synchronous Motor) using load torque observer is presented. With this system, we can obtain more reliable eye moving signal(nystagmus). Until now rotating chair system, which is called 2D-optokinetic stimulator is used to make dizziness. However, an inclined rotating chair system witch is 3D-optokinetic stimulator is needed to obtain the precise dizziness data[8][9J, This 3D-optokinetic stimulator Include unbalanced load caused by unbalanced center of mass. For this case, new compensation method is considered to obtain robust speed control using load torque observer To reduce the effect of this disturbance we can use dead-beat observer which has high gain. The appitcation of the load torque observer is pubitshed in [J] for position control A problem of using speed information such as amplifying effect of ~ noise is reduce by moving average process The experimental results are depicted in this paper to show the effect of this proposed algorithm