ROBUST CHATTER-FREE SLIDING MODE OBSERVER OF SENSORLESS INDUCTION MOTOR DRIVES | ||||
| ERJ. Engineering Research Journal | ||||
| Article 2, Volume 30, Issue 1, January 2007, Page 9-15 PDF (338.54 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2007.69889 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. M. Mahmouh; M. Khater | ||||
| Department ofElectrica1 Engineering, Faculty oflhgineering, Minoufya Universiy, Shebin El-Kom, Egyp | ||||
| Abstract | ||||
| Sliding mode observer with its salient features is considered one of the robust observers for flux and speed estimation of sensorless induction motor drives. However, the discontinuous switching function of the sliding mode observer causes a significant chattering which is considered a serious drawback. In this paper, a modified robust chatter-free sliding mode observer for sensorless induction motor drives is presented. The discontinuous switching hnction is replaced by a continuous one to eliminate chattering. The accuracy and robustness of the proposed sliding mode observer are examined at motor starting and load torque variations. A floating-point Digital Signal Processor (DSP) TMS320C31 control board with a hardwarelsoflware interface is used to implement the proposed sliding mode observer for speed estimation. Simulation and experimental results are presented and discussed | ||||
| Keywords | ||||
| : Chattering; Sliding Mode Observer; Speed Sensorless | ||||
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