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Integration of strain feedback and charge drive for high-performance of piezoelectric actuators
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10.1063/1.4805020
/content/aip/journal/rsi/84/5/10.1063/1.4805020
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/5/10.1063/1.4805020

Figures

Image of FIG. 1.
FIG. 1.

Hybrid control circuit.

Image of FIG. 2.
FIG. 2.

Gages were attached on lateral surfaces of the piezoelectric stack.

Image of FIG. 3.
FIG. 3.

Strain amplifier's voltage output vs actuator's displacement.

Image of FIG. 4.
FIG. 4.

Noise density at strain amplifier's input stage.

Image of FIG. 5.
FIG. 5.

Charge amplifier.

Image of FIG. 6.
FIG. 6.

Charge amplifier part in the hybrid control circuit.

Image of FIG. 7.
FIG. 7.

Control frame of the circuit.

Image of FIG. 8.
FIG. 8.

Experimental setup.

Image of FIG. 9.
FIG. 9.

Control result with triangular waveforms at different low frequencies (feedback control—green line, charge control—blue line, hybrid control—red line).

Image of FIG. 10.
FIG. 10.

Control result with triangular waveform at different frequencies (feedback control—green line, charge control—blue line, hybrid control—red line).

Image of FIG. 11.
FIG. 11.

Amplitude response (feedback control—green line, charge control—blue line, hybrid control—red line).

Image of FIG. 12.
FIG. 12.

Nonlinearity of hybrid control method.

Image of FIG. 13.
FIG. 13.

(a) Equivalent displacement waveform under strain feedback control; (b) displacement waveform under hybrid control.

Image of FIG. 14.
FIG. 14.

(a) Comparison of step response (feedback control—green line, change control—blue line, hybrid control—red line); (b) detailed step response for charge control and hybrid control.

Image of FIG. 15.
FIG. 15.

Equivalent low frequency displacement drift at strain amplifier's output (a) noise from DC to 10Hz; (b) noise from 0.1 Hz to 10 Hz.

Tables

Generic image for table
Table I.

Devices used in the circuit.

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/content/aip/journal/rsi/84/5/10.1063/1.4805020
2013-05-17
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Integration of strain feedback and charge drive for high-performance of piezoelectric actuators
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/5/10.1063/1.4805020
10.1063/1.4805020
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