DOI 10.17586/0021-3454-2016-59-7-534-541
UDC 62-50:681.5
ENSURING PIEZOELECTRIC DRIVE ROBUSTNESS USING THE METHOD OF CONTROLLED RELATIVE INTERVAL FREQUENCY
ITMO University, Saint Petersburg, 197101, Russian Federation; Associate professor
O. V. Slita
ITMO University, Saint Petersburg, 197101, Russian Federation; Associate professor
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Abstract. The problem of ensuring robustness of precision positioning system with piezoelectric drive is considered for the case of the drive model with interval parameters. The proposed approach uses the concept of controlled relative interval frequency. It is shown that the problem can be solved with median modal control supplemented by a control over the relative interval state matrix of the designed system. An example of positioning system design with the use of proposed method is presented.
Keywords: piezoelectric drive, interval parameters, robustness, relative interval, median modal control
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