Control of Hysteresis: Theory and Experimental Results
| dc.contributor.author | Tan, Xiaobo | en_US |
| dc.contributor.author | Venkataraman, Ram | en_US |
| dc.contributor.author | Krishnaprasad, Perinkulam S. | en_US |
| dc.contributor.department | ISR | en_US |
| dc.date.accessioned | 2007-05-23T10:10:41Z | |
| dc.date.available | 2007-05-23T10:10:41Z | |
| dc.date.issued | 2001 | en_US |
| dc.description.abstract | Hysteresis in smart materials hinders the wider applicability ofsuch materials in actuators. In this paper, a systematic approachfor coping with hysteresis is presented. The method is illustratedthrough the example of controlling a commercially available magnetostrictive actuator.<p>We utilize the low-dimensional model for the magnetostrictive actuator that was developed in earlier work. For low frequency inputs, the model approximates to a rate-independent hysteresis operator, with current as its input and magnetization as its output. Magnetostrictive strain is proportional to the square of the magnetization. In this paper, we use a classical Preisach operator for the rate-independent hysteresis operator. <p> We present the results of experiments conducted on a commercial magnetostrictive actuator, the purpose of which was the control of the displacement/strain output. A constrained least-squares algorithm is employedto identify a discrete approximation to the Preisach measure. We then discussa nonlinear inversion algorithm for the resulting Preisach operator, basedon the theory of strictly-increasing operators. This algorithm yields a control input signal to produce a desired magnetostrictive response.<p>The effectiveness of the inversion scheme is demonstrated via an open-looptrajectory tracking experiment. | en_US |
| dc.format.extent | 500982 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/1903/6199 | |
| dc.language.iso | en_US | en_US |
| dc.relation.ispartofseries | ISR; TR 2001-30 | en_US |
| dc.subject | Sensor-Actuator Networks | en_US |
| dc.title | Control of Hysteresis: Theory and Experimental Results | en_US |
| dc.type | Technical Report | en_US |
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