id	keyword
american_scientific_journal-1222	model
american_scientific_journal-1222	wen
american_scientific_journal-1222	bouc
american_scientific_journal-1222	hysteresis
american_scientific_journal-1222	control
american_scientific_journal-1222	actuator
american_scientific_journal-1222	piezoelectric
american_scientific_journal-1222	figure
american_scientific_journal-1222	volume
american_scientific_journal-1222	apa120s